Date: Mon, 31 Oct 1994 02:45 EST
From: "Don't Panic!" <ABRODY@vax.clarku.edu>
Subject: Translations available through DataViz MaclinkPC v. 8

Dear Moderators,
Here is an update to info-mac/cmp/maclink-pc-formats.txt.
Please replace the old version with the following, and a title of maclink-pc-8-formats.txt:
------
FAQ - How do I convert from PC to Mac and Mac to PC?

DataViz MacLinkPlus 8.0 is one of many solutions, if others exist that can do all the following for less I would like to know:

1. Will convert to/from the most popular versions of MS-Word and Word Perfect including WP 6.0 PC, MSWD 6.0 Mac, MSWD 6.0 PC, WP 3.0 Mac, MSWD 5.1 Mac. 
2. Transfers data over serial RS232 cables (included with software).  Will translate before or after transfer.
3. Given two modems and two phone lines, will transfer data to be translated to guest machine, or translate before sending to guest machine, and transfer data over there.
4. Includes Apple PC Exchange 2.0 as part of package.
5. Includes DataViz FileView.
6. Translates before transfer to, or after receiving files from non-Windows MS-DOS machines (such as 8086, 8088 and most 80286 processors).  Some of the features may not be available for these earlier made machines, read documentation carefully before using on non-Windows MS-DOS platforms.   If using 5.25 Inch floppy drive PCs, ask DataViz for special disks for installation of transfer software onto those PCs.

7. Translations include:

PC  - Mac  - PC  (most formats are translatable both ways, as well as within the operating system in question)
--------------
Exceptions are: 
   You can translate  TO Macintosh Publish Text, Macintosh Text, and AppleWorks (Apple II) v. 2.1, you can not translate FROM the above word processing formats to a PC Word Processing format.  
PC Text is however possible to translate to Mac word processing formats listed below in two way tanslations.  
   You can translate DBF Mac TO PC Database formats, but not from PC Database formats to DBF Mac.
   You can translate from AutoCad.DXF, Harvard Graphics.CGM, Lotus.PIC, Lotus Freelance.CGM, Ventura Publisher.GEM, Ventura Publisher.IMG to Macintosh PICT, but not from Macintosh PICT to above 6 PC graphics formats.
   
Transfer only:
Binary, MacBinary, Pagemaker, Postscript, Text, TIFF

"Other supported formats": DIFF, SYLK, WKS, Comma Values (CSV), Tab Text, Tab Values, WriteNow NeXT v. 1 & 2, SunWrite v. 1.1 (write only),
MIF (NeXT/Sun) v. 2 & 3



The two way translations available are:
(Word Processing all inclusive/interchangeable)

Ami Pro (Windows) v. 1, 2 & 3
ClarisWorks (Windows) v. 1
DCA-RTF
Multimate (through v. 4)
Office Writer v. 5 & 6
Professional Write v. 2
RTF (PC)
Word (DOS) through v. 6
Word for Windows v. 1, 2 & 6
WordPerfect (DOS) v. 4.2, 5, 5.1, and 6
WordPerfect (Windows) v. 5.1, 5.2, & 6
WordPerfect Works (Windows) v. 2
WordStar v. 3, 4, 5, 6, & 7
MS Works (DOS) v. 2 & 3
MS Works (Windows) v. 2 & 3
XYWrite III
ClarisWorks v. 1 & 2
FrameMaker MIF v. 2 & 3
MacWrite v. 4.5 & 5
MacWrite II
MacWrite Pro v. 1 & 1.5
Nisus
RTF (Mac)
Word Mac v. 3, 4, 5, 5.1, & 6
WordPerfect Mac v. 1, 2, 2.1, & 3
MS Works Mac v. 2, 3 & 4
WriteNow v. 2, 3, & 4
AppleWorks (Apple II) v. 3

DataBase Formats (all inclusive/interchangeable):
ClarisWorks (Windows) v. 1
dBase (DBF) II, III, & IV
FoxBase (PC)
MS Works (DOS) v. 2 & 3
MS Works (Windows) v. 2 & 3
WordPerfect Works (Windows) v. 2
ClarisWorks (Mac) v. 1 & 2
FoxBase Mac
MS Works v. 2, 3, & 4
AppleWorks (Apple II), v. 2.1 & 3

Graphics (all inclusive/interchangeable):
PC Paintbrush.PCX
TIFF
Windows Bitmap.BMP
Windows Metafile.WMF
WordPerfect.WPG v. 1 & 2
PICT
-----
Exclusive:
EPS with PICT Thumbnail to/from EPS PC with TIFF Thumbnail
-----

Spreadsheets (all inclusive/interchangeable):
ClarisWorks (Windows) v. 1
Excel (Windows) v. 2, 3, 4, & 5
Lotus 1-2-3 (WKS, WK1, WK3)
MS Works (DOS) v. 2 & 3
MS Works (Windows) v. 2 & 3
Quattro Pro (DOS) v. 4 (Windows) v. 1 & 5
SYLK
Symphony (WRK, WR1)
WordPerfect Works (Windows) v. 2
ClarisWorks (Mac) v. 1 & 2
Excel (Mac) v. 2, 3, 4, & 5
MS Works v. 2, 3, & 4
SYLK
AppleWorks (Apple II) v. 3

-----

Source: Version 8  MacLinkPlus Translates... document that comes with upgrade notice to version 8.
Disclaimer: All of the above names are "trademarks or registered trademarks of their respective holders".  This is a For Your Information (FYI) only post.  Inaccuracies probably exist.  Call DataViz or your favorite software distributer for pricing.  DataViz may be reached at 1-800-733-0030, if you ask them you can probably get another copy of the above document.   Overseas they have a long distance phone number to Trumbell CT at 1-203-268-0030 in the U.S.  Other companies may have similar translations available, though I haven't found any where all of these are in one package.  (Doesn't mean there aren't any that do have them!)


Hope this is helps anyone looking for translations.

From: josh@cqs.washington.edu (Josh Hayes)
Subject: Mac as Xterm: summary of responses (LONG) 
Date: 17 Mar 93 17:05:57 GMT 

A little while ago I asked for information about setting up my mac
at home as an Xterminal; here is the summary I mailed out to those
who mailed me asking for a summary....

Sorry I have not summarized earlier. I did not get much information
>From the net - in fact, I got about ten posts asking me to keep 
the author posted on what I found, for every post I got from someone
who already knew something!

But the trickle of info has dried up completely, so I'll send you
what I have, which isn't much. What follows are extracts from the
mail people sent me; I'll try to provide a quick summary at the
bottom of this mail, so skip to that if you just want the punchline.

---------begin included text-----------
From: Samuel Herschbein <SAM@CHEVAX.CHEME.WASHINGTON.EDU>
Subject: MacX over serial

	MacX (any X-windowing system) is a pig and will be as slow as
molasses over a serial line.  Running it on a LocalTalk net is supposed
to be painfully slow.  We run it on Ethernet only.  If you want, you
can come over to my office and try it over Localtalk to see if its
too painfully slow.

[I have not yet visited Sam, and I feel like a real ingrate, too. -JAH]
-----

From: Michael Cummings <cummings@u.washington.edu>
>In short, what do I need to make my mac into an X terminal?

	MacX runs under the MacOS, so you don't need to be running AU/X to
emulate an X terminal.
-----

From: Chuck Delaney <cdelaney@u.washington.edu>
I can only speak from limited experience, but I'll tell you what I know.
I have run MacX on a IIx and on a IIfx.  The IIfx's response was much better;
the IIx was slow but bearable.  Both of these were Ethernet'd, communicating
with the X client over a backbone.

Software wise, MacX requires MacTCP, which should be included.  A/UX is not
required to run MacX.

I don't know much about networking protocols, but assuming you can run TCP/IP
over your 14.4K line, you should be in business.  I've heard that this is
possible, but I don't know how easy it is to set up MacTCP to talk through
something other than the Ethernet port.
-----

From: David Fetrow <fetrow@biostat.washington.edu>
 There may be better protocols than SLIP for that, but OK. For example:
NCD has a proprietary scheme that is optimized for X and their PC X server
has a local screen manager which MUCHO cuts down on the number of packets
flying back and forth. If you can get mapping of Xfonts into the fonts
available on your Mac: that's extremely helpful. It's probably standard
with the serial version of MacX.

 Suns have mediocre serial lines by the way, they usually top out around
19,200.
-----

From: Samuel Herschbein <SAM@CHEVAX.CHEME.WASHINGTON.EDU>
    When I first set up MacX, I monitored our network for traffic statistics.
It took about 100K of packets to log in and open the main window in our
MacX process simulation package.  The amount of data going over the network
is humungous (sp?).

    Translate this to modem  speeds:  100K bytes @9600 baud:  9600 baud is
about 960 characters a second (1 start bit, 8 data, 1 stop).  So it would take
a minimum of 100 seconds of ideal network xfers to open the window at 9600.

    I'm at 2400 with error correction and compression, it took over 5 minutes
to open a window that normally appears over the ethernet in about 20 secs.
When I held the mouse down on a menu item, it took about 4-5 seconds for the
packets to get to the host and back before I saw the X-window begin to respond.
It took even longer before the menu responded to the drag...

    My conclusion:  If you have the patience of a yogi or swami, it may work
tolerably at 14.4.  It will be excrutiating to wait for mouse responses.  From
my experience using our package, it would not be a workable situation:  I would
rather spend the time commuting to work than concentrating on holding the
mouse down waiting for responses...
-----

From: guy@odi.com
I am typing this using xemacs from my powerbook at home.  I'm using a
PPP link via v.32bis to my sparcstation at work.  The X server package
is eXodus, by White Pine software.  I haven't used MacX, so I can't
compare the two.  The performance is not bad.  Using Fetch, the ftp
client, I see download rates of near 3000 bytes per second.

MacPPP and the PPP faq are available at merit.edu.  You really have to
be a hacker to set up the software on both sides.
-----

From: Richard Weier <weier@twolf4.EE.WASHINGTON.EDU>
The slip version of NCSA telnet, macTCP, and MacX should be sufficient
to get an xterminal at home.

I have successfully connected a Mac running A/UX at home to a DecStation
running Ultrix using slip.  Rumor has it that the UW compute services
group will be adding slip capabilities this summer. [see below. -JAH]
-----

From: "Erik A. Johnson" <johnsone@uxh.cso.uiuc.edu>
I've done what you've suggested above, and it is quite slow.  Bearable for
simple xterm but any graphics are incredibly slow, even with a 14.4kb modem
with compression.  Hardware required is a modem.  Software:  MacSLIP, MacTCP,
MacX.

I do most of my remote work over a simple terminal-emulation/modem program
... and I get file transfers using zmodem about twice the speed as if I use
an FTP program over the SLIP/TCP/modem line.
-----

And for you people local to the UW in Seattle, here's some info
that is relevant to the question, that I got after asking the help
desk over at CAC. They write:

> Still running with 2400, but planning to upgrade to 9600 or
> 14.4K; are there any 14.4 dialups? How about 9600? What are
> the numbers?

685-7796 supports v.32 (9.6Kbps) and V.32bis (14.4Kbps).

> I am experimenting with setting up a SLIP protocol on the
> modem hooked to our network over here but being a UNIX 
> weenie it's not going particularly well...how about PPP; 
> do you support that?

Not yet.  A project has been initiated to investigate the problems of dial
IP (SLIP, CSLIP, PPP), with the goal of announcing a small, experimental
pool 2Q93. 
-----

So. There are some conflicting answers, but here's what I can sort
out so far.

1) MacX runs under the native Mac OS and does NOT require A/UX.

2) It DOES require either direct ethernet connection (or a gateway
to such, e.g. a GatorBox) or a SLIP connection over a serial line.

3) It appears to be a real dog with respect to speed. If you want
rapid response, this isn't your beastie.

4) It may be that using PPP rather than SLIP will improve the 
performance; similarly, EXodus (White Pine) may be superior to
MacX in that regard, but the sample size is far too small to know
for sure.

5) Doing everything you can to reduce X-packet number and size is
A Good Thing. This might include obtaining an optimized client-server
package: these exist for the PC side but I know of no such package
for the Mac. If you have a PC card in your mac, it may be possible
to use the existing PC packages and/or existing PC X-terminal
software (e.g. Linux), but I shudder to think what doing an emulation
on an emulation would do to your computer's psyche, let alone to its
performance. Another option is to write your own client software to
utilize non-TCP protocols; if you're a hacker you may be able to 
write clients that use, for example, a UDP stream rather than a TCP
stream. This will reduce the number of packets per unit time quite
a bit, which should improve performance.

6) It may simply not be feasible to do this right now. Modems may
be too slow, and data streams too large, to fit comfortably within
available relatively inexpensive technology. I see a need for a
package that DOES perform well within those constraints (say, using
PPP over a 9600 or 14.4 line), but it does not appear to exist at
this writing.

7) Finally, there ARE FAQ lists that address these questions, most
notably the A/UX FAQ and the comp.sys.mac.comm FAQ; both are posted
regularly in news.answers and are also available for anonymous ftp
>From rascal.ics.utexas.edu and also (I think) the sumex archive.

I hope this helps. If anyone out there has more information, it
might be nice to just send it to everyone in the address list of
this mailing - this represents all the people who wrote to me and
asked me to keep them posted.

Again, thanks for your help. We'll get that connectivity one of
these days.

Cheers,

Josh Hayes, josh@pogo.cqs.washington.edu
Center for Quantitative Sciences, HR-20
University of Washington, Seattle, WA 98195  USA

--
   Josh Hayes, Quantitative Sciences HR-20 U of Washington
    josh@pogo.cqs.washington.edu             206 543-5004
On Old Olympus' Towering Top, A Finn And German Viewed A Hop.

Date: Thu, 17 Feb 1994 19:49:29 +0100
From: martin@luc.ac.be
Subject: PowerBook 170 screen problem (summary)

Dear net,

on my query about a weird PowerBook 170 problem, where the screen image
would start dancing around every so often and stop when I gave the machine
a good shake, I got two long answers. Since they are instructive on how to
open an PowerBook without "screwing" something to pieces, I am attaching
them as a report. As it turned out, the problem was the display cable
connector in the screen unit having come loose due to vibrations. Opening
up the screen (by taking out the two screws that have rubber pads over
them) and pushing the connector back in remedied the problem. Thanks to
Keith Owens and Steven Taylor for answering!

Jan M.L.Martin --- martin@luc.ac.be

[archive as /info/hdwr/opening-powerbooks.txt or something]
***CUT HERE***

Date: Fri, 4 Feb 1994 10:13:06 +0100
From: " (Steven Taylor)" <steven.taylor@mrc-applied-psychology.cambridge.ac.uk>
To: martin@luc.ac.be
Subject: PB170 hassles
Mime-Version: 1.0

Hi Jan,

I've had several occasions to open PB170/180s, and it's quite easy for the
Video cable (a ribbon cable) inside to be pulled out on reassembly - the
top half of the case has to be 'hinged' from the front of the machine,
downward, while this raises the back, and induces tension in the ribbon
cable. The wires also carry trackball/keyboard ADB info. You may need to
push the connector back in. If the machine has been installed after
manufacture with the 8Megs, and the Global Village hardware, chances are
that other stuff got loosened too - maybe the HD power cable if the tech
wasn't careful.

Opening the bigger PBs isn't too problematic, provided you have an
antistatic surface and wristband to work with, and I think a T7 and T9 Torx
screwdriver.
Remove the battery to begin with;
There are 5 screws in the case -
a single T7 beneath the 'flap' at the rear of the machine (where ports are at);
4 x T9 screws in the case below.

Once these are removed, and the machine placed with the LCD display down,
in the position you would normally type at, the top half of the case can be
gently removed. You will probably have to be persistent here, because it's
quite stiff; the rear edge will normally release OK, but there are little
'tabs' on the front edge that can only be disengaged by your teasing the
front edge backward. It will release in time.

Now, you'll find the top case can pivot backward and you'll see the ribbon
cable that is the video connector. It may need to be pushed firmly back
into place. (though of course it may not be clear whether it was loose
originally or due to the current disassembly!)

You could now either  reassemble the Mac, or investigate further. If the
latter, the whole top part of the case including the LCD display can be put
to one side if you ease the video connector straight upward (there are not
clips to hold it in, part of the problem really!). There's nothing related
to the Motherboard or HD on this top section. Checkout the other connectors
you can see, and make sure they're tight. (of course how far you're
prepared to investigate is entirely up to you.)

Reassembly is the reverse of the above. It helps if you 'balance' the rear
of the top part of the case on the row of ports at the back of the Mac
(resting in particular on top of the SCSI connector) with the top case at
about 45deg to the horizontal, as this will give you enough slack to plug
the video connector back in. Then 'pivot' the lid downward, and slightly
raise the rear edge (without yanking the cable free) to let you drop the
front edge into its groove, where the tabs will hold it in place. Then drop
the rear down again, and push it slightly - there will be a little
resistance, but will click gently on the left hand side.

Shove the screws back in the lower case, then behind the flap. Replace the
battery (your PRAM will be reset now, so checkout your Control Panels to
restore values).

I hope this is of some help!
Good luck,
Steve

Date: Tue, 8 Feb 1994 16:22:18 -0600 (CST)
From: Keith D Owens <kdowens@tenet.edu>
Subject: PowerBook Problem
To: martin@luc.ac.be
Mime-Version: 1.0

Jan,

It sounds like your PowerBook Screen problem is a loose or ill-fitting
screen cable. There is a ribbon cable that connects the screen display to
the motherboard with a simple plug in connector. It is fairly easy to
check (if you are not faint of heart... i.e. willing to undo a few
screws)  :-)

Undo the four screws on the bottom of the PowerBook (it takes a Torx T-10
size screw bit-available at most hardware stores). Then undo the single
screw that is located right underneath the phone plug (RJ-11 jack) of your
internal modem. It is a Torx T-8 size screw (this small size is available
but harder to find at the hardware store).

STand the PowerBook on its end, with teh back facing you. Have the screen
unlatched and partially opened to give it more stability. Then seperate
the two halves from the back as it is facing you. The front edge of the PB
is hinged, so it will seperate in a V-shape. Only seperate it 2-3 inches,
letting it remain hinged in the front. There is a ribbon cable that your
should be able to see (on my 170 it's white) that runs from the screen
towards the motherboard. Reach in with two fingers and press down on the
connecter to make sure that it is firmly seated and making a solid
connection. That should solve the screen flickering.

On your hard drive, is it a LaCie brand Quantum, or is it original equipment?

Good luck,
Keith D. Owens <kdowens@tenet.edu>

Date: Sat, 13 Mar 93 22:31:40 CST 
From: ehfm@midway.uchicago.edu (Eric Hoffmann)
Subject: AT&T DataPort 14.4K Report 

The AT&T DataPort 14.4K modem has generated a lot of interest on the
newsgroup comp.dcom.modems. An external model of this modem with Class 1
fax capability (including cable and QuickLink II fax software, yech!) is
being advertised in MacWeek (3-08-93) for $299. The offer is only good
through April 30, 1993. If you qualify under the Sysop program, your price
drops to $222. In response to the question recently posted to info-mac, I
sent one reply but thought that it would make more sense to summarize the
postings on comp.dcom.modems and prepare a report on this modem.

I have clipped responses from the following people on comp.dcom.modems 

karl@genesis.MCS.COM
dawson@willard.atl.ga.us
Adam.Frix@p18.f20.n226.z1.FIDONET.ORG
jmcging@access.digex.com

s.frazee@pdnis.paradyne.com   (in charge of the Sysop program)
pato@pdn.paradyne.com         (senior engineer at AT&T Paradyne)

If I missed your posting or if you have testimonials, bug-reports, and
further questions, please send mail to me at ehfm@midway.uchicago.edu

Also included in this report is the Sysop order form.

For a more formal review, check out the March 1993 issue of BoardWatch. The
review begins on page 14, "AT&T intros sysop deal on 14.4kbps modems." I
will include this review if I can obtain permission from Jack Richard, the
editor of BoardWatch.

14,400 Fax external   $299
14,400 Fax internal   $289

Call 1-800-554-4996 and charge it!
Call 1-800-544-4996 ext. 3503 for the dealer nearest you.

I am not affiliated in any way with AT&T Paradyne. Just a satisfied customer :-)

-Eric Hoffmann
 ehfm@midway.uchicago.edu
===============================================================================
                   AT&T DATAPORT 14.4K MODEM REPORT
===============================================================================

This report summarizes the traffic on comp.dcom.modem regarding the AT&T 14.4K
DataPort modems. Additional information should be posted to that newsgroup, or
if that is not possible for you, please forward your replies to my mail address
-- ehfm@midway.uchicago.edu and I will include your report in the next update
of this document.

Who do I contact if I want to place an order for this modem?
-----------------------------------------------------------

- Call AT&T Paradyne at 1-800-544-4996 to place your order.

- Or you may order from Elek-Tek:

  ELEK-TEK
  7350 N. Lindner
  Skokie,  IL   60077

  708/677-7660 [from inside of Illinois]
  800/395-1000 [anywhere outside of Illinois]

-email addresses:

 s.frazee@pdnis.paradyne.com  Scott Frazee is in charge of the Sysop program
 
 Scott Frazee
 AT&T Paradyne
 Mailstop LG219
 8545 126th Ave. North
 Largo, FL  34649

 800/554-4996  (voice)
 813/530-8276  (international callers)
 813/530-2398  (fax)

Reports follow:
--------------

From: Adam.Frix@p18.f20.n226.z1.FIDONET.ORG (Adam Frix)
Sender: ufgate@cmhgate.fidonet.org (newsout1.26)
Newsgroups: comp.dcom.modems
Subject: Report--AT&T Paradyne DataPort 14.4/fax
Message-ID: <1135262.2B9B3BA2@cmhgate.fidonet.org>
Date: Fri, 05 Mar 93 20:25:20 EST
Organization: FidoNet node 1:226/20.18 - cmhGate UF Gateway, Columbus OH
Lines: 94


Well, thanks to this newsgroup our user group just got an AT&T DataPort (tm)
14.4 modem with fax for our BBS.  We got it under the sysop program; I think
$222 is just a _darn_ fine deal.

It seems to be a rock-solid, medium-high-end modem.  I must say that, unlike
the USR products I've come into contact with, its factory settings assume a
cable properly wired for flow control.  (On a Macintosh, this is not a fair
assumption, for we must use specially wired cables that are not readily
available and that not too many salespeople know about, and end up getting
only half the job done anyway--but I digress.)  In addition, there was a
fairly large notice right up front aimed at Mac users, telling us exactly
which extended command to set for Mac flow control.  There was only one.  Nice
touch.  (Trust me, I've tried to explain modem setup and theory over the phone
to more than one novice, whose modem manual is shall we say less than
satisfactory.)

I don't know how well it will work for some of the setups you typically see on
the net; however, it's probably rock-solid for most uses.  It's not filled
with lights on the front, nor any kind of display panel; 7 LEDs, and that's
it.  Therefore, it's probably not for any application which requires careful
and detailed monitoring of what state the modem may be in at any time.

It's been on now for about 24 hours, and the entire case (plastic) is room
temperature, except for a small spot in the middle of the top which is a
degree or two warmer (no more than that).  This is a complete about-face
compared to the Supras and even the USR Sportsters, which generate enough heat
to warm coffee.

It's got what they call an Optical Line Interface, which tells me nothing
except that they're not using standard electronics to match the incoming phone
line with the DSP stuff.  Apparently this technology was designed to enhance
the modem's performance on noisy lines.  If we're lucky, it also means extra
protection against lightning.

The modem comes with a lifetime warranty and toll-free tech support; I don't
suppose AT&T Paradyne is apt to go out of business any time soon, so this is
probably worth something.  And I've seen some of their monster commercial
leased-line modems, so I know they're not newcomers to this stuff like Zoom
and Supra and ZyXEL.

We received the modem very quickly; maybe 2.5 weeks or so after sending in the
application and certified check.  This is in great contrast to the USR "send
us your firstborn, promise us your second, pay us now, and we'll think about
getting back to you at some vague future point" sysop policy.  To be fair I
think USR is busy responding to the heat of competition--they even take credit
cards, now, in 1993--but they're being slow about it, and as much as I wanted
a USR, I more so wanted a good modem quickly, for the sake of our users.  We
looked at the Hayes Optima, for $299, but it uses the AT&T Paradyne
chipset--and so the AT&T was a better deal at the $222 price.

It was interesting how we came to buy this unit.  We had deliberated amongst
the USR, Hayes, AT&T, and Telebit modems, and decided on the Hayes; then, the
day before we sent the check in, I saw the post here on the net about AT&T's
continued low sysop pricing.  I faxed Scott Frazee, the AT&T Paradyne Sysop
Program coordinator, and within about 15 minutes he was faxing me back with a
response.  I had all the necessary papers in my hand shortly thereafter. 
Compare this to Hayes; on a Thursday morning 4 weeks ago I faxed them for more
info, and they haven't responded to this day.  Sometimes, it's the little
things that count.

Right before receiving the modem we received a form letter from Scott Frazee,
telling us that we had been approved for the sysop program.  On top of
that--get THIS--he handwrote a note at the bottom of the form letter telling
me that he's sorry, but there's a shortage of Mac fax software right now, so
it'll be shipping to me shortly.  !!!!!  Can you imagine this?  Not only does
their incredibly good price include Mac fax software, which is absolutely
unheard of (most places want an extra $100 for it), but he takes the time to
let me know personally that he's sorry it didn't ship immediately.  Wow. 
These folks are out to get some business.  I guess it's working, huh?  :-)

If they have a good user group price, I'll not feel badly about recommending
them to our members.  However, I think that these puppies are only available
direct from AT&T, and they list for $550 and sell for $430-$450 through their
regular ads.  That's a buncha money, given that a slightly less than
comparable USR Sportster 14.4/fax sells for $329.  A hundred bucks is a
hundred bucks, and I think this isn't that high end of a modem (even though it
does have configurations for things the commodity modems don't, it doesn't
have as many configurations as a USR Courier, for example).  But I would
definitely recommend it over one of the latecoming commodity modems.

You can contact AT&T Paradyne in Largo, Florida at 813-530-2000.

If anyone has any questions, I'd be happy to try to answer them.  I've got the
owner's manual right here.

Aloha,
--Adam--
 
--  
Adam Frix via cmhGate - Net 226 fido<=>uucp gateway Col, OH
UUCP: ...!uunet.uu.net!towers!bluemoon!cmhgate!20.18!Adam.Frix
INET: Adam.Frix@p18.f20.n226.z1.FIDONET.ORG
Please use bang path until my mail forwarding gets fixed.
---------------------------------------------------------------------------

From: pato@pdn.paradyne.com (Pat O'Horo)
Subject: Re: Report--AT&T Paradyne DataPort 14.4/fax
Message-ID: <1993Mar10.142229.24638@pdn.paradyne.com>
Sender: news@pdn.paradyne.com (News Subsystem)
Nntp-Posting-Host: elvis
Organization: AT&T Paradyne, Largo, Fl.
References: <1135262.2B9B3BA2@cmhgate.fidonet.org>
Date: Wed, 10 Mar 1993 14:22:29 GMT
Lines: 30

In article <1135262.2B9B3BA2@cmhgate.fidonet.org> 
Adam.Frix@p18.f20.n226.z1.FIDONET.ORG (Adam Frix) writes:
>
>
>If they have a good user group price, I'll not feel badly about recommending
>them to our members.  However, I think that these puppies are only available
>direct from AT&T, and they list for $550 and sell for $430-$450 through their
>regular ads.  That's a buncha money, given that a slightly less than
> 
While I believe we do sell these modems through our direct sales force, they
are intended to be marketed through normal (ie distributors) channels.  This
is new to us (Paradyne), but we are progressing nicely.

I checked and we have a special for March and April.
14,400 Fax external   $299
14,400 Fax internal   $289
Call 1-800-554-4996 and charge it!

>--  
>Adam Frix via cmhGate - Net 226 fido<=>uucp gateway Col, OH
>UUCP: ...!uunet.uu.net!towers!bluemoon!cmhgate!20.18!Adam.Frix
>INET: Adam.Frix@p18.f20.n226.z1.FIDONET.ORG
>Please use bang path until my mail forwarding gets fixed.


-----------------------------------------------------------------------
Patrick O'Horo					Voice (813) 530-2608
Senior Engineer					Fax   (813) 530-8224
AT&T Paradyne
8548 126th Ave No.
Largo, Fl 34649
---------------------------------------------------------------------------

From: jmcging@access.digex.com (John McGing)
Newsgroups: comp.dcom.modems
Subject: Re: Report--AT&T Paradyne DataPort 14.4/fax
Date: 10 Mar 1993 14:47:42 -0500
Organization: Express Access Online Communications, Greenbelt, MD USA
Lines: 31
Message-ID: <1nlgkuINNa64@access.digex.com>
References: <1135262.2B9B3BA2@cmhgate.fidonet.org> 
<1993Mar10.142229.24638@pdn.paradyne.com>
Reply-To: jmcging@access.digex.com
NNTP-Posting-Host: access.digex.com

pato@pdn.paradyne.com (Pat O'Horo) writes:

>While I believe we do sell these modems through our direct sales force, they
>are intended to be marketed through normal (ie distributors) channels.  This
>is new to us (Paradyne), but we are progressing nicely.

>I checked and we have a special for March and April.
>14,400 Fax external   $299
>14,400 Fax internal   $289
>Call 1-800-554-4996 and charge it!

>-----------------------------------------------------------------------
>Patrick O'Horo					Voice (813) 530-2608
>Senior Engineer					Fax   (813) 530-8224
>AT&T Paradyne
>8548 126th Ave No.
>Largo, Fl 34649

I have the internal unit and it worked right out of the box (haven't tried
the fax, though).  Great manual, gives me 14.4 connections the Supra could
never lock onto.  I am very sold on this modem.  And if the prices quoted
above are for the public in general, this is one heck of a deal.  

Seriously, it beats the Supra I bought hands down.  

John
-- 
------------------------------------------------------------------
jmcging@access.digex.com   Nobody knows the troubles I've seen...   
woodb!oss2cc!jmcging@soaf1  .... and nobody cares!
J.MCGING on GEnie  70142,1357 on Compuserve     My post, my ideas
---------------------------------------------------------------------------

From: bob@consult.UUCP (Bob Willey)
Newsgroups: comp.dcom.modems
Subject: Re: Report--AT&T Paradyne DataPort 14.4/fax
Message-ID: <1370@consult.UUCP>
Date: 11 Mar 93 04:25:27 GMT
References: <1135262.2B9B3BA2@cmhgate.fidonet.org>
Reply-To: bob@consult.UUCP (Bob Willey)
Organization: CCS Enterprises, Inc.
Lines: 27

In article <1135262.2B9B3BA2@cmhgate.fidonet.org> 
Adam.Frix@p18.f20.n226.z1.FIDONET.ORG (Adam Frix) writes:
>Well, thanks to this newsgroup our user group just got an AT&T DataPort (tm)
>14.4 modem with fax for our BBS.  We got it under the sysop program; I think
>It seems to be a rock-solid, medium-high-end modem.  I must say that, unlike
    < Bunch of stuff deleted.....>

We too have been very pleased with the AT&T DataPort 14.4 modem.
We have had it up about 2 weeks now on our BBS with some pretty heavy
usage and so far, it has done very well.  We have a Practical Peripheral
14400FXSA modem and the AT&T DataPort 14.4 modem.  The AT&T worked better
out of the box and has never missed a lick.  The PPI modem was having problems
with some hispeed connections until recently.  We got the NEW 1.23 ROMs for 
the PPI and now it appears rock-solid.  Right now we can't notice any 
difference between the connections on either node.

The only note here was that someone mentioned that the ROMs in the AT&T
are soldered in, so they are not field upgradeable.  With everyone else
in the market coming out with new ROMs every coupld of months, I am not
sure what this will mean.  Unless AT&T is confident that this modem has
hit the field "perfect in every way".  So far, it has been.....


-- 
>.. Bob Willey, CDP          ..  |  ..  uunet!consult!bob  bob@ccs.com   ..<
>.. CCS Enterprises, Inc.    ..  |  ..   Office: (410) 820-4670          ..<
>.. P.O. Drawer 1690         ..  |  ..      FAX: (410) 476-5261          ..<
>.. Easton, Maryland 21601 ......|......... BBS: (410) 476-5098 ...........<
---------------------------------------------------------------------------

From: karl@genesis.MCS.COM (Karl Denninger)
Newsgroups: comp.dcom.modems
Subject: Re: AT&T Dataport?
Date: 12 Mar 1993 19:23:22 -0600
Organization: MCSNet, Chicago, IL
Lines: 16
Message-ID: <1nrd2a$ruo@genesis.MCS.COM>
References: <1993Mar12.194320.24296@infonode.ingr.com>
NNTP-Posting-Host: localhost.mcs.com

In article <1993Mar12.194320.24296@infonode.ingr.com> keford@infonode.ingr.com 
(Keith Ford) writes:
>
>What is the turn-around time for the AT&T sysop deal?

I got mine in about 5 days.

>How does their Dataport perform?  I've been a USR man
>in the past, but $222 is a good deal for a second line.

I have 4.  No regrets, no problems.  Nice units.

--
Karl Denninger (karl@genesis.MCS.COM) 	| You can never please everyone except
Data Line: [+1 312 248-0900]		| by bankrupting yourself.
         	   LIVE Internet in Chicago; an MCSNET first!

---------------------------------------------------------------------------

From: dawson@willard.atl.ga.us (Willard Dawson)
Newsgroups: comp.dcom.modems
Subject: Re: AT&T Dataport?
Message-ID: <87BD1B6w165w@willard.atl.ga.us>
Date: Sat, 13 Mar 93 16:00:18 EST
References: <1993Mar12.194320.24296@infonode.ingr.com>
Organization: Willard's House BBS, Atlanta, GA -- +1 (404) 664 8814
Lines: 41

keford@infonode.ingr.com (Keith Ford) writes:

> 
> What is the turn-around time for the AT&T sysop deal?
> 
> How does their Dataport perform?  I've been a USR man
> in the past, but $222 is a good deal for a second line.
> 
> -- 
> Keith E. Ford     __
> Intergraph Corp  /  \ Micro Magic BBS 1:373/12  The Dragon Server
> +1 205 730-8614  \__/ sysop@umagic.fidonet.org  server@ingr.com
> fordke@ingr.com  [__] 830-2362 HST/V32bis 9600  "Subject: HELP"


I had mine in under two weeks (like, ten days, I forget...), from the
time I faxed in my application.

I guess I should make a "report" on my experiences with it...

In short, it's a nice little modem, especially compared to the v.32 SFM
it replaces on my BBS.  I do like it, mostly.  But, with just a few
reservations...

I don't like the way the status LED's are recessed, requiring one to
view them from almost straight-on.  Also, if there is a compact way of
dumping the S-regs, I haven't found it yet.  at&v gives an incredibly
long listing, requiring several pages of text.  Nice for the novice, but
not what I need...  What does it take too just get a matrix of data, like
is possible on (even) the Supra and my Telebit?  And, lastly, why, oh
why, could this modem not have been Class 2 rather than Class 1 FAX???

So, despite those two minor quibbles, it's a decent modem, and turnaround
time on the order beats other sysop programs, from what others have said.
Overall, add me to the list of "happy customers."

-- 
dawson@willard.atl.ga.us (Willard Dawson)
gatech!kd4nc!vdbsan!willard!dawson
emory!uumind!willard!dawson
Willard's House BBS, Atlanta, GA -- +1 (404) 664 8814
---------------------------------------------------------------------------

===============================================================================
       ===========   AT&T PARADYNE - SYSOP PRICING PROGRAM   ===========

Please return the completed order form to:

                    AT&T Paradyne
                    c/o Scott Frazee
                    Sysop Pricing Program
                    8545 126th Avenue North
                    P.O. Box 2826 
                    Largo, FL  34649-2826

                    FAX: (813) 530-2398
 

Name of Sysop: __________________________________________________

Company: ________________________________________________________

Business Address: _______________________________________________

_________________________________________________________________

Business City, State, Zip Code:__________________________________

_________________________________________________________________

Business (Voice) Phone Number: __________________________________



Shipping Address (if different from above): _____________________

_________________________________________________________________

Shipping City, State, Zip Code: _________________________________

_________________________________________________________________

Home (Voice) Phone Number: ______________________________________



Name of Bulletin Board: _________________________________________

Bulletin Board Phone Number(s): _________________________________

_________________________________________________________________

_________________________________________________________________

Which BBS software package is being used: _______________________


What type of modem (manufacturer and brand) is currently being 

used: ___________________________________________________________

_________________________________________________________________

How long has the BBS been running: ______________________________

Please leave the current number of active callers and the average

calls per week received by your system: _________________________

_________________________________________________________________

_________________________________________________________________

Is the BBS tied into a Net?  If "Yes", which Net(Fido, WWIV, 

RIME, etc.): ____________________________________________________

What is the BBS' Main Focus (File Exchange, Message Base, 

E-mail, etc.): __________________________________________________

_________________________________________________________________

Is this a Non-profit or Commercial BBS (if Commercial, please 

include your fee breakdown): ____________________________________

_________________________________________________________________

When is the BBS in operation: ___________________________________

_________________________________________________________________



To verify the preceding information, AT&T Paradyne MUST be
provi…

Showing first 20,000 characters of 24,410 total. Open the full document →

From: mem@jhufos.pha.jhu.edu (Mel Martinez x8378)
Subject: [*]Quadra video overview (tech) 
Date: Tue, 14 Jul 92 15:20:11 EDT 

Due to the number of private requests I keep getting for info on the quadra
videos, I can't get any of my own work done!  :)

I am forwarding the following document to the archives.  It describes the
quadra internal video very well and should be very useful to many quadra
owners.  It is written by the designer of the quadra video himself, Dale Adams,
and was originally posted in comp.sys.mac.hardware (I think).

Please archive as info-mac/tech/quadra-video-notes.txt

Mel Martinez
The Johns Hopkins University
Dept. of Physics




-- snip here --

> From: Dale_Adams@gateway.qm.apple.com (Dale Adams)
> Newsgroups: comp.sys.mac.hardware
> Subject: Mac Quadra Video Explained, Part 1
> Date: 25 Nov 91 16:39:34 GMT
> Organization: Apple Computer, Inc.,  Cupertino, CA

Macintosh Quadra Built-In Video, Part 1: Video Architecture

There have been quite a few questions in this (and other) news groups 
concerning the built-in video capabilities of the new Macintosh Quadra 700 
and 900.  In response to these questions, here is the first of three 
articles which provide an in-depth (and accurate!) description of the 
Quadra video capabilities.  This first article discusses a number of 
general Quadra video topics, the second details how to wire the video 
connector sense pins to access all the Quadra's supported video modes, and 
the third describes the memory configurations necessary to support each of 
the video modes at specific pixel depths.  And by the way, I am the 
designer of the video hardware for both Mac Quadras, so this information 
is accurate.

The Quadras were designed with a flexible video hardware section in order 
to support a wide variety of displays.  Since the purchaser of one of 
these CPUs is paying for a frame buffer on the motherboard (whether (s)he 
wants it or not), and since the Quadras were designed to be high 
performance machines, the frame buffer was designed to be both very 
flexible (to support most displays a user may want to use) and to be 
relatively high performance (to match the computer's capabilities).

Obviously every display made by every 3rd party monitor vendor can't be 
supported by the onboard video, but the Quadras do support a much wider 
range of displays at a higher level of performance than any previous 
Macintosh.  The Quadra 700 and 900 support pixel depths ranging from 1 to 
32 bits per pixel (bpp), Apple displays ranging from the 512 x 384 12-inch 
color monitor through the 1152 x 870 21-inch color monitor, pixel clocks 
ranging from 12 to 100 MHz, and a variety of industry standards such as 
VGA, SVGA, NTSC, and PAL.  The Mac Quadra video port produces RS-343 RGB, 
and also provides horizontal, vertical and composite sync outputs.  
Composite or S-video output is not provided, but can be accomplished by 
use of an external RGB-to-composite encoder.  The Quadra 700 and 900 also 
support Apple convolution for flicker-reduction on interlaced displays 
(i.e., NTSC and PAL) at up to 8 bpp.  The Mac Quadras automatically detect 
the type of display attached to the video connector via 3 'sense' pins on 
the video connector.  Depending on the wiring of these 3 pins, software in 
ROM configures the video hardware for one the supported display types.  (A 
full description of sense pin wiring and supported display types is in the 
2nd article.)

The Quadra 700/900 provide the highest built-in video performance of any 
Macintosh CPU to date.  In a (very) simplified graphics model, we could 
say that performance depends on two main factors: processor horsepower and 
the bandwidth the processor has into frame  buffer memory.   These 
machines already have a fast processor - the 68040 - which runs standard 
32-bit QuickDraw.  To provide high bandwidth into frame buffer memory, 
dedicated video RAM (VRAM) was used for the frame buffer, and that VRAM 
was placed directly on the 68040 processor's local bus.  This provides the 
68040 the same access time into frame buffer memory that it has into main 
system RAM.  (Transfer rates can exceed 40 MBytes/sec.)  In addition, 
memory options such as fast page mode are supported, which can improve 
graphics performance for operations such as scrolling, 
offscreen-to-onscreen pixmap transfers, etc.

In a number of cases the design was optimized for high performance over 
low cost.  A good example of this is 32 bpp operation on Apple's standard 
13-inch RGB monitor at 640 x 480 resolution (and this also applies to VGA 
and NTSC), which is probably the most common color monitor in use on the 
Macintosh.  The actual number of memory bytes needed to support 24 bpp is 
640 x 480 x 3 = 921,600.  This would seem to fit within 1 MByte of memory 
(as is the case with the Apple 8*24 video card), but the Quadras actually 
require 2 MBytes of VRAM for this mode.  The 8*24 card supports 24 bpp at 
640 x 480 by using a storage mode called 'chunky planar' to fully utilize 
all its 1 MByte of VRAM.  However, this results in having to perform 3 
separate memory accesses for each 24-bit pixel read from or written to the 
frame buffer.  (This is done in hardware so software only performs a 
single read or write.)  On a NuBus video card, this inefficiency is 
partially masked by the synchronization delays which occur at the 
processor-bus/NuBus interface.  However, when frame buffer memory is 
placed directly on the processor bus, this approach results in a nearly 3X 
performance degradation.  This was judged unacceptable for the Quadras.  
Each 24-bit pixel occupies one longword (4-bytes) in VRAM, so the Quadras 
actually provide 32 bpp for the 640 x 480 resolution.  This pushes the 
memory requirement for this mode over the 1 MByte boundary (640 x 480 x 4 
= 1,228,800 bytes).  Performance is improved still more by another frame 
buffer architectural feature.  Frame buffer memory in the Quadras is 
organized into 4 'banks' of 512 KBytes per bank.  As mentioned earlier, 
Quadra VRAM can operate in fast page mode.  In addition, each bank of VRAM 
operates in fast page mode independently of the other 3 banks.  This 
causes the number of in-page 'hits' to increase, and thus improves the 
effective bandwidth into the frame buffer.  Also, at 32 bpp, 640 x 480 
resolution, each row is set to 4096 bytes, or 1024 32-bit pixels.  Each 
successive row is assigned to a different VRAM bank (modulo 4, of course). 
 This memory organization improves performance during certain commonly 
performed graphics operations such as vertical scrolling.

In any design there are a number of tradeoffs to be made, and this is 
certainly true for the frame buffer in the Mac Quadra machines.  While the 
video does operate at 32 bpp on up to 16-inch displays, it does not 
support 21-inch displays at this pixel depth since this would have 
significantly raised the cost of the motherboard.  (Memory capacity and 
bus bandwidths would essentially have to double, and this would be 
expensive.)  It does support NTSC and PAL timing, but does not provide a 
composite video output.  While it is much faster than any non-accelerated 
video card, there are accelerated video cards that are faster (and much 
more expensive, too, by the way).  A separate graphics processor was not 
added primarily for cost reasons.  However, a graphics processor such as 
the 29000 RISC chip on the 8*24GC card can only speed up the graphics 
operations that it was designed to know about.  If an application program 
bypasses QuickDraw (which is what most Mac graphics accelerators are 
designed to speed up), a graphics accelerator will not improve 
performance, and can actually cause a performance degradation.

Overall, the Macintosh Quadra video provides a reasonable compromise of 
cost, performance, and features, which provides the video needed by the 
majority of Macintosh users at a reasonable price.

The second article will detail the displays supported by the Quadra's 
onboard video, and will explain how to configure the sense pins for each 
of these configurations.


*********************************************************************
* Dale Adams             *   Opinions expressed are not necessarily *
* Apple Computer, Inc.   *   those of my employer.                  *
*********************************************************************
--
 ...Doug Bitting... || "But the wisdom that comes from heaven is first
                    ||  of all pure; then peace loving, considerate,
bitting@cs.yale.edu ||  submissive, full of mercy, and good fruit,
doug@yalevm.bitnet  ||  impartial and sincere."  -- James 3:17
-- 
--
Minnie Mouse is a slow maze learner.


Article 15039 of comp.sys.mac.hardware:
Path: boulder!agate!dog.ee.lbl.gov!network.ucsd.edu!swrinde!mips!spool.mu.edu!yale.edu!cs.yale.edu!bitting-douglas
From: bitting-douglas@CS.YALE.EDU (Douglas Bitting)
Newsgroups: comp.sys.mac.hardware
Subject: REPOST: Mac Quadra Video Explained, Part 2/3
Summary: (Was: Re: Quadra + VGA monitor?)
Message-ID: <1992Feb28.203620.26354@cs.yale.edu>
Date: 28 Feb 92 15:36:14 GMT
Sender: news@cs.yale.edu (Usenet News)
Organization: You gotta be kidding me!
Lines: 223
Nntp-Posting-Host: zoo-gw.cs.yale.edu


Several people have made allusions to the posts from November 1991 by
Dale Adams, the designer of the Quadra's internal video.  As luck
would have it, I did save these out of curiosity.  So, here is a
repost.  It is in 3 parts.  This is part 2.  This is reposted without
permission; I hope Dale doesn't mind.

--Doug

-- snip here --

> From: Dale_Adams@gateway.qm.apple.com (Dale Adams)
> Newsgroups: comp.sys.mac.hardware
> Subject: Mac Quadra Video Explained, Part 2 (long)
> Date: 25 Nov 91 16:58:24 GMT
> Organization: Apple Computer, Inc.,  Cupertino, CA

Macintosh Quadra Built-In Video, Part 2:  Supported Display Configurations

This is the second in a series of articles which describes the 
capabilities of the built-in video of the Macintosh Quadra 700 and 900.

The Quadra frame buffer determines what type of display is attached to the 
video connector by examining the state of 3 sense line pins.  The 
following chart details how these three pins must be wired for each of the 
supported display types.  For each supported display, the screen 
resolution (horiz. pixels  X  vertical pixels), dot clock frequency, and 
the vertical and horizontal scan rates are listed.

Basically, the Quadra 700 & 900 support any display, whether from Apple or 
from another vendor, that meets one of the following specifications:

STANDARD SENSE CODES:
 
                    Sense pins    Hor x Vert     Dot      Vert     Horiz
Display              10  7   4      Pixels      Clock    Refrsh   Refrsh
-----------         -----------   ----------    -----    ------   ------
 
Apple 21S Color      0   0   0    1152 x 870     100       75      68.7

Apple Portrait       0   0   1     640 x 870    57.2832    75      68.9
 
12" Apple RGB        0   1   0     512 x 384    15.6672   60.15   24.48
 
Apple 2-Page Mono.   0   1   1    1152 x 870     100       75      68.7
 
NTSC                 1   0   0  underscan-512x384 12.2727  59.94   15.7
                     1   0   0  overscan- 640x480 12.2727  59.94   15.7
(To produce a color NTSC signal, a RGB-to-NTSC converter is required.)

12" AppleMonochrome  1   1   0     640 x 480     30.24     66.7    35.0
 
13" Apple RGB        1   1   0     640 x 480     30.24     66.7    35.0

Extended sense codes will be examined if the following sense code is 
detected:
                     1   1   1
 

NOTE 1 on above monitors: A sense pin value of 0 means that the pin should 
be grounded to the C&VSYNC.GND signal; a value of 1 means do not connect 
the pin.
 
NOTE 2 on above monitors: sense pins 4, 7, and 10 are referred to as 
SENSE0, SENSE1, and SENSE2 in pinout tables for the video connectors.

NOTE 3: The terms 'underscan' and 'overscan' are used to describe the 
active video resolution for NTSC and PAL modes.  Underscan means that the 
active video area appears in a rectangle centered on the screen with a 
black surrounding area.  This ensures that the entire active video area 
always is displayed on all monitors.  Overscan utilizes the entire 
possible video area for NTSC or PAL.  However, most monitors or 
televisions will cause some of this video to be lost beyond the edges of 
the display, so the entire image will not be seen.
 


EXTENDED SENSE CODES:
 
NOTE for extended sense codes: A sense pin pair value of 0 means those 
pins should be tied together (as opposed to grounding the pins to pin 11); 
a value of 1 means do not connect the pins.  Do _not_ wire any of these 
pins to ground.
 
                   Sense pins    Hor x Vert      Dot      Vert     Horiz
Display           4-10 10-7 7-4    Pixels       Clock    Refrsh   Refrsh
-----------       -------------   ----------    -----    ------   ------

16" Color,
(i.e., E-Machines)  0   1    1     832 x 624    57.2832    75      49.7
 
PAL
PAL has two wiring options, using the extended sense pin configuration.  
To produce a color PAL signal, an RGB-to-PAL converter is required.
 
PAL Option 1        0    0    0  underscan-640x480 14.75   50     15.625
                                 overscan-768x576  14.75   50     15.625
Note: This configuration does not presently doesn't support 24 bits per 
pixel.
 
PAL Option 2        1    1    0  underscan-640x480 14.75   50     15.625
                                 overscan-768x576  14.75   50     15.625
Note: This sense code also requires a diode between sense pins 10 & 7, 
with anode towards pin 7, cathode towards pin 10. 

 
VGA                 1    0    1    640 x 480     25.175    59.95   31.47
 
SVGA                1    0    1    800 x 600       36        56    35.16
To enable SVGA, after configuring and connecting the monitor for VGA, open 
the Monitors control panel and select Options.  Choose Super VGA from the 
dialog and reboot your system.

No external monitor (video halted)
                    1    1    1
  


Here are the Macintosh Quadra video connector pinouts:
 
Pin    Signal          Description
-----  -----------     ----------------------------------------
1      RED.GND         Red Video Ground
2      RED.VID         Red Video
3      CYSNC~          Composite Sync
4      MON.ID1         Monitor ID, Bit 1 (also known as SENSE0)
5      GRN.VID         Green Video
6      GRN.GND         Green Video Ground
7      MON.ID2         Monitor ID, Bit 2 (also known as SENSE1)
8      nc              (no connection)
9      BLU.VID         Blue Video
10     MON.ID3         Monitor ID, Bit 3 (also known as SENSE2)
11     C&VSYNC.GND     CSYNC & VSYNC Ground
12     VSYNC~          Vertical Sync
13     BLU.GND         Blue Video Ground
14     HSYNC.GND       HSYNC Ground
15     HSYNC~          Horizontal Sync
Shell  CHASSIS.GND     Chassis Ground
 
 

If your monitor is a VGA type, you can try the following cable pinouts.
 
Macintosh Quadra                         VGA Connector
DB-15
-------------                           --------------
 
2  ------------------- Red Video ------------ 1
1  ------------------- Red Ground ----------- 6
9  ------------------- Blue Video ----------- 3
13 ------------------- Blue Ground ---------- 8
5  ------------------- Green Video ---------- 2
6  ------------------- Green Ground --------- 7
15 ------------------- Hsync ---------------- 13
12 ------------------- Vsync ---------------- 14
14 ------------------- Sync Ground ---------- 10
10 ------------------|
7  ------------------| Connect 7 and 10 so the sense pin ID will equal VGA
 
There are a few issues to keep in mind with VGA monitors:
 
 * VGA monitors will vary depending on the vendor.  Check with the vendor
   about Macintosh Quadra compatibility before buying, or better yet, 
   actually try the monitor with a Quadra to see if it works and if the 
   quality is acceptable.
 
 * Vendors have different image quality specifications.  There may be
   significant differences between Apple monitors and the wide range of
   VGA monitors.  Do a side-by-side comparison of the monitors you are
   considering before buying.
 
 * Many third party cable vendors have off-the-shelf cables that should 
   work.
 


Most NTSC devices use an RCA-type phono-connector and the following 
diagram uses that as a reference point.  A cable wired as follows may 
allow many different brands of NTSC monitors to work on a Macintosh 
Quadra.  I would advise you to test the monitor on a Macintosh Quadra 
prior to purchase to see if it meets your expectations.
 
Adjust the phono-connector side to whatever type of connector is used 
(RCA, BNC, etc.).  "Tip" is the pin in the center of the connector (the 
signal); the sleeve is flange around the outer edges of the connector (the 
chassis ground).
 
   Card Connector                     RCA-Type Phono-Connector
   --------------                     ------------------------
   4      MON.ID1  (sense0) --|
   7      MON.ID2  (sense1) --|
   11     C&VSYNC.GND --------|
 
   5      GRN.VID  -----------------> Tip (signal)
   Shell  CHASSIS.GND --------------> Sleeve (ground)
 
By grounding pin 4 and pin 7 to pin 11, the Macintosh Quadras are told that
an NTSC monitor is attached.  The actual black and white video signal is 
on pin 5 and connects to the center (Tip) of the phono-plug.  The shell of 
the card connector connects to the sleeve of the phono-plug.
 
To acquire a color NTSC signal from a Quadra (or any Apple Macintosh
display card), an RGB-to-NTSC converter is required, such as those
available from RasterOps, Truevision, and Computer Friends.  Sorry, but I 
do not have the cable requirements for any of these devices.

The third article will detail the amount of VRAM needed for various pixel 
depths for all the display configurations supported by the Quadra onboard 
video.


*********************************************************************
* Dale Adams             *   Opinions expressed are not necessarily *
* Apple Computer, Inc.   *   those of my employer.                  *
*********************************************************************
--
 ...Doug Bitting... || "But the wisdom that comes from heaven is first
                    ||  of all pure; then peace loving, considerate,
bitting@cs.yale.edu ||  submissive, full of mercy, and good fruit,
doug@yalevm.bitnet  ||  impartial and sincere."  -- James 3:17
-- 
--
Minnie Mouse is a slow maze learner.


Article 15040 of comp.sys.mac.hardware:
Path: boulder!agate!ames!elroy.jpl.nasa.gov!swrinde!mips!think.com!yale.edu!cs.yale.edu!bitting-douglas
From: bitting-douglas@CS.YALE.EDU (Douglas Bitting)
Newsgroups: comp.sys.mac.hardware
Subject: REPOST: Mac Quadra Video Explained, Part 3/3
Summary: (Was: Re: Quadra + VGA monitor?)
Message-ID: <1992Feb28.203809.26444@cs.yale.edu>
Date: 28 Feb 92 15:38:04 GMT
Sender: news@cs.yale.edu (Usenet News)
Organization: You gotta be kidding me!
Lines: 106
Nntp-Posting-Host: zoo-gw.cs.yale.edu


Several people have made allusions to the posts from November 1991 by
Dale Adams, the designer of the Quadra's internal video.  As luck
would have it, I did save these out of curiosity.  So, here is a
repost.  It is in 3 parts.  This is part 3.  This is reposted without
permission; I hope Dale doesn't mind.

--Doug

-- snip here --

> From: Dale_Adams@gateway.qm.apple.com (Dale Adams)
> Newsgroups: comp.sys.mac.hardware
> Subject: Mac Quadra Video Explained, Part 3
> Date: 25 Nov 91 17:02:16 GMT
> Organization: Apple Computer, Inc.,  Cupertino, CA

Macintosh Quadra Built-In Video, Part 3:  VRAM Configurations

This is the third in a series of articles which describes the capabilities 
of the built-in video of the Quadra 700 and 900.

The Quadra frame buffer supports a variety of pixel depths, from 1 to 32 
bits per pixel (bpp).  The supported pixel depths (1, 2, 4, 8, or 32 bpp) 
depend on the display resolutio…

Showing first 20,000 characters of 23,637 total. Open the full document →

Connecting the Sega 3D Glasses to the Macintosh
Part I, The Hardware
Version 1.2, Copyright 1989 Juri Munkki

This document describes how I connected the Sega 3D Liquid Crystal
Shutter Glasses to my Macintosh II RS-422 port. With the glasses you can
use software specifically made to display a stereo pair of images. This
method of displaying 3D graphics gives most users a feel of depth in the
image.

Stereo viewing has interested me for years. I regularly read the usenet
rec.games.video newsgroup, since it occasionally contains information on
coin-ops. When the Sega Master system was introduced, I read about it
and discovered that it can control 3D-glasses. I immediately became
interested, but I had trouble finding Sega in Finland. This lead me to
post an article in rec.games.video. As it happens, Stan Lackey had
already built an interface for his 8-bit Atari computer. With his help,
I built an interface that works with the Macintosh. It should work fine
with any RS-422 or RS-232 serial port and if you know some electronics,
it shouldn't be too hard to modify it to work with other interfaces as
well. All my thanks go to Mr. Lackey.

Building the circuit requires a certain amount of experience with a
soldering iron and I recommend that you verify your circuit with a
digital multimeter. You are the only one responsible, if this circuit
manages to fry your serial port, your computer or something else. The
circuit can be tested without plugging it to the serial port. I
recommend that you use a 9V battery and connect it to the inputs that
would normally take the TxD+ and TxD- signals.

I haven't drawn a circuit board for this project. I simply used a
prototyping board and connected the components with wire.

Here's the list of components I used:

Amount	Item			Comments
1	CMOS-555	Timer
1	CMOS-4013	D-flip/flop with two inputs
1	CMOS-4070	Quadruple 2-input exclusive or gate
1	Rectifier	I just bought one with a low voltage specification
2	0.1 uF capacitors
1	0.01 uF capacitor
2	3 kOhm resistors	I used a single 4.7 kOhm trimmer
1	3.5 mm stereo connector	A female connector like those in Walkmans.
1	Circle-8 connector	A male connector for the Macintosh serial port.
2-4 m	wire
some	shielded cable with 3 wires
1	VERO-board		A prototyping board of some sort

It is very important that you use CMOS-parts, since the operating
voltage is 10 V. We need 10 V, because the glasses use a 400 Hz square
wave when they are opaque. When they get 0 V, they are transparent.

Below is the circuit that I used. It's probably not  optimal (I think it
might work even without the 4013, if you changed a few resistor values),
but I have built two of them and both work. The one I'm currently using
has a trimmer instead of the two resistors. If you are using a trimmer,
you might want to use an oscilloscope to verify that you are getting 400
Hz at the output plug or 1600 Hz at the 555 output (Pin 2). I used my
Mac II as the oscilloscope. Since the frequency is audible, I was able
to digitize it with my Impulse audio digitizer.

	Figures are in a separate GIF file!

The rectifier (the leftmost component) is used to provide power for the
circuit. I connected the 0.1 uF capacitor to the rectifier output so
that the power would be steadier, but I haven't actually calculated what
it's effect is. I don't think that it has caused any problems, but
someone more proficient in electronics might want to put something else
there.

The 555-timer is connected according to a circuit in a data book I found
here at the university. The frequency of this circuit is 1.44 / ((Ra +
2Rb) C), where C is the capacitance of the capacitor between pins 1 and
2. We see that with the specified resistors and capacitor, the frequency
is 1600 Hz. The D-flip/flop is used to divide this frequency to 400 Hz.

The 400 Hz clock signal is fed to the other input of three exclusive or
gates. Of the remaining three pins, one is grounded. That gate outputs
the clock unchanged and it is connected to the ground wire of the 3D
glasses. The remaining two pins are connected to TxD+ and DTR. These two
lines can then be used to invert the clock signal. When the clock is not
inverted, the output is the same as in the ground wire, i.e. the
potential is 0 V. When the clock is inverted, the we get 400 Hz
alternating current of +/- 10 V. The signals look like this:

	Figures are in a sepate GIF file!

Here are the pinouts of the three circuits I used:

	Figures are in a sepate GIF file!

The following three Macintosh serial port pins are used:

	Pin 6 is TxD+
	Pin 3 is TxD-
	Pin 1 is DTR

The easiest way to solder the pins is to buy a connector where the pins
can be removed so that you can solder each pin individually. I also used
shrinking tube (I don't know what it's called in English) to make sure
that the wires do not touch each other.

This document will be followed with Part II, a brief description of the
software interface that is needed to program the glasses from a
Macintosh. I already have some animation and fast 3D transformation
routines ready, so I'll probably try to find time to write games for the
glasses. I'll make the games either shareware or public domain.

I'd really like to see a lot of software that supports these glasses and
I wouldn't mind if someone started selling these interfaces to "the rest
of us". If you want the sell the interface, please contact me before
selling more than a few. I think any profits should be shared with
those, who pioneered this interface. If you write software for the
glasses, a nice way to remember me is to send a free copy for me to try
out. I can then keep a list of compatible applications and make that
information available to users (and possible clients).

I occasionally come up with ideas like this interface and surprisingly
often have the energy to do something about them. If you want to
encourage me in these projects, please send me a postcard or letter.
Donations are also ok.


	Juri Munkki

	Helsinki University of Technology
	Otakaari 1, U044B
	SF02150 Espoo
	Finland

P.S.

This is version 1.2, which means that I'm no longer the only one who
has built the interface. Please destroy any older versions, if you
encounter them. There is a file describing the changes from 1.0 and 1.1
to 1.2. Version 0.9 had two capacitors in the wrong places.

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Showing first 20,000 characters of 20,655 total. Open the full document →

Date: Fri, 24 Mar 1995 07:39:30 -0500 (EST)
From: Thomas Basil <basil@ward.nadn.navy.mil>
Subject: Mac 1956 Date-Compilation of Answers

Dear Info-Mac:

Below is a compilation of answers received from an inquiry I posted to
INFO-MAC.  I'd asked:

  Can anyone shed light on why a Mac would always reset its date to 8/27/56
  on start-up?  I thought a bad battery would cause date to default to 1904. 
  The 1956 date is popping up on two separate Macs.  Both check out as clean
  under Disenfectant 3.5. Many thanks for any tips or suggestions.

Thanks to everyone for clearing up a mystery.

Tom Basil
basil@ward.nadn.navy.mil
-----------------------------------------------------------------------
Replies received...

From: "Jingcai Zhu (Mizzou1.Missouri.edu)<SNRZHU@MIZZOU1.missouri.edu>

When the battery is dead, not only the date will be reset to 8/27/56 at       
the start up, the color monitor setting will usually go back to B/W also.       
So, change a new battery will solve the problem.                                


From: zeev fraenkel <FNFRANKL@WEIZMANN.weizmann.ac.il>

you have a bad battery in both your computers. i have a classic II and
when it reverts to the date of 1956 i know its time to replace the battery.
for some reason this already happened to me twice despite the fact that
the battery is supposed to last 6 years and my mac is barely 4 years old.
something is wrong somewhere but it is not enough of a bother to do
something about it, so i replace the battery and forget about it.
i wonder how widespread this problem is. replacing the battery
in a mac II takes 5 minutes.                        zeev fraenkel


From: Matthew Damo Alverson <alverson@cs.unca.edu>

I just recently had this problem myself but along with I also had all my
presets changing, In particular my default printer was no longer coming up
as the default, and my system beep was not what I had set it as.  So
everytime I turned on my mac I had to select chooser and select my printer
again.  Then I noticed that the documents I had worked on in the last week
were dated 1956.  I replaced the battery and that fixed both problems. 


From: Benjamin k Grossman <bgrossman@sparky.lkwash.wednet.edu>

No, some newer Macs hit other dates, I think this is one of them.


From: Roy Cruz <rcc@mozcom.com>

I discovered the problem around two years ago and I even asked Apple
support (through Applelink) but all they suggested was it could be the
battery or a virus.  This bug appears on different Mac models, System 7.x
(I haven't tried using 7.5.1 on those Macs yet), and reformatting and
installing System software from the CD won't help. Also, aside from the
date and time other parameters are being reset on my old Mac like the 32
bit addressing and color.  Last year, however, I noticed that it happens
to me (and to others I know) when a certain SCSI device is connected. Do
you have an external hard disk connected? If so, have you tried
disconnecting it temporarily to see if the problem occurs?  There's a
solution though that I hope will also work on your Mac. Try not
disconnecting your Mac from the power line even if your Mac is turned off.
If your Mac is connected to a surge protector, don't turn its switch off
after turning off your computer. Please mail me if this helps or if you
got a better solution. This mystery has been bugging me for quite a long
time. 


From: Matthew Damo Alverson <alverson@cs.unca.edu>

My mac is a classic II also, it is not a hard job but does require two 
special tools.  A nine inch long ?allen? wrench and a clamp that is used to 
spread the case apart.  To open the case remove the four screws in the 
back two are back in the handle grip (a pain to get to but can be done 
with either a long ?allen? wrench or a long torx driver.  Once the screws 
are out the casing needs to be pried apart.  The necessary tools can be 
ordered for $6.95 + $3.00s/h from MacConnection or most likely any other 
mac catalogue.  The battery is located (with the back of the machine 
towards you) in the far right corner.  The battery is 1/2 AA battery I 
purchased mine from my local computer store for about $10.00 but these 
people are always over priced I suspect you can most likely find it cheap 
else where.  They told me a battery last about 3 years.


From: Glen Hoag <glenhoag@nuance.com>

Try the battery, especially if the Mac is a couple years old. A dead
battery will cause the clock to power up to some default state.  I have
seen other reports of certain models coming up with a date in the 1950's. 
You might check to see if other settings are retained, such as the mouse
tracking speed. If not, the signs are even stronger that it's a dead
battery.

Date: Sun, 6 Jun 1993 01:10:15 -0700 (PDT) 
From: Guy Kuo <guykuo@u.washington.edu>
Subject: quadra-700-clock-mod-145 

quadra-700-clock-mod-145.txt

Text file for tech folder which describes technique for changing Quadra
700 clock speed. This version includes cooling fan installation, custom
speed oscillators, thermal data, caveats regarding socket pins, and
performance data. At the time of posting, the author has reports of 33
Q700's modified in this way. Some have been running this way for months
without additional cooling. Three machines required cooling for
accelerated operation.

----------
This procedure should only be attempted by users experienced in circuit
board fabrication and repair. You must desolder a component on a
multi-layer motherboard. Such boards are fragile and expensive to
repair. This is NOT a good first soldering project. The process
voids your warranty. If you are not dissuaded by the above, read on
and see how a $5.00 part can bring your Quadra 700 up to Quadra 950
performance.

The Quadra 700 has been successfully accelerated by exchanging its
CPU clock oscillator for a higher frequency unit. The original
oscillator is a 50 MHz unit from which is derived the 25 MHz and
50 MHz clocks used by the 680RC40 processor. Speeds up to 33 MHz
are usually attained with new oscillators. Higher speeds are
attainable by some individual motherboards. One can reasonably expect
to attain 30 MHz. Higher speeds are likely but not guaranteed. There
is a small chance that your particular motherboard is incapable of
higher speed.

Of the 33 Quadra 700's reported to or modified by myself the results
are:

35 MHz    2 machines (custom Fox electronics 70 MHz clocks)
33 MHz   17 machines. Two of which reported as unstable until
               cooling fan added
32.5 MHz 12 machines (had 65 MHz clocks available at low cost)
31.5 MHz  1 machine required cooling fan to operate. Higher speed
               testing pending.
Failed    1 machine failed at 33 MHz. Lower speeds not yet tested
          1 machine with a clip on clock oscillator failed at 32
               MHz to properly access floppy drive

Motherboard destructions: 0

Motherboard damages: 2 episodes of plate through hole damage which
    the users managed to solder through.

Unusual problems: 1 motherboard shorted against the case during
          reassembly. A piece of paper between the motherboard and
          case solve the problem.


33 MHz exceeds the manufacturer expected performance of the Newer
Technology Variable Speed Overdrive. Newer guarantees 30 MHz as
attainable by all. Of the five VSO's in Seattle I know about, 31 MHz
has been the recommended speed. Personally, I have run a motherboard
with full stability (except 24 bit video) at over 35 MHz. 24 bit video=20
instability at accelerated speeds prompted me to swap motherboards. My
second motherboard has a top stable speed of 30.5 MHz with a VSO. 24
bit stability was not attained until I slowed to 30 MHz. This very same
motherboard is running rock solid at 33.3 MHz & 24 bit video is working
very well. Apparently, the machine finds a true clock oscillator more
palatable than the VSO's synthesized clock. This suggests that speeds
over 30 MHz will be more easily attained using true clock oscillators.
This observation is confirmed by two other user reports.

The VSO is more expensive but does not require warranty voiding=20
board modifications. I also market a clip on clock modification which
uses a true clock oscillator which has a solder free installation.
However, I recommend a true soldered installation for highest
reliability. Clip on mounts are primarily for users wary of voiding
their warranty. One user of my clip on had floppy access problems.
It is unknown if that machine would have done better with a soldered=20
installation, but I would not be surprised.

As new user reports arrive, I shall add them to this info file.

Although machines will run more rapidly, this modification pushes the
circuits beyond normal operating speeds. Although no reported, long
term failures have occurred on Quadra's due to higher speed operation,
there is a possibility of shortening the lifespan of components on
the motherboard. I have run my Q700 at accelerated speeds for almost 10
months and have not had a board failure. Others have run their VSO's
longer. Given this, I doubt this is a very high risk. On the other
hand, the machine may be more prone to system crashes. In my experience,
this has not been the case. For safety reasons, do not perform this on any
mission critical Macintosh.


PARTS

    Clock Oscillators (4 pin TTL or CMOS in 14 pin DIP form factor)
            Check that you are not receiving the half size package!
            Obtain speeds beginning at 50 MHz and higher as you wish
            to attempt. Reasonable values would be 55, 60, 62, & 66.66 MHz
            units. You might try higher speeds as well. The oscillators are
            typically less than $5.00 each mail order.

            You should include the 50 MHz clock in case you damage the
            original oscillator or wish to plug a 50 MHz unit into your
            socket. The original Apple clock oscillator has an Output
            Enable control on pin 1. The units listed below always have
            output enabled. This is not a problem unless you try to use
            a Variable Speed Overdrive with one of the below clocks.

            I obtained my clock oscillators from DigiKey 1-800-344-4539
            Some of their part numbers are:

                50 MHz TTL Clock Oscillator  (part # X121)
                55 MHz CMOS Clock Oscillator (part # SE1509)
                60 MHz CMOS Clock Oscillator (part # SE1510)
                64 MHz TTL Clock Oscillator  (part # X136)
                66.66 MHz TTL Clock Oscillator (part # CTX137)

            Speeds above 66.66 MHz and up to 70 MHz are difficult to find.
            If you wish to try higher speeds, Fox Electronics 1-813-693-009=
9
            can make 70 MHz clock oscillators on their "Fast Fox" program i=
n
            15 working days. The cost is about $12 each.In ten weeks their
            factory can make any value you wish. Reasonable values to try
            would be 69, 70 and 71 MHz. Ask for TTL in a 14 pin DIP sized
            four pin can.=20

    Socket: Obtain a 4 pin socket which is in the same form factor as
            a 14 pin DIP package. If you try cutting the extra
            pins off a regular 14 pin socket, be absolutely sure
            no remnants of unused pins can short traces on the
            motherboard. Marc A. Tamsky helpfully suggests using a
            needle nose plier to push the pins out of a machine pin
            socket. It tried it and it work well.

            I used 4 machined socket pins cut from a screw machined
            socket. This allows easier removal should need arise.

    Cooling Fan?: A small, 12 volt muffin fan can be mounted on top of
            the CPU heat sink. Obtain one which has dimensions about
            40 mm square for easier mounting.=20

            Newer Technology's Variable Speed Overdrive includes a
            cooling fan. However, most machines with modified clock
            oscillators have survived without a cooling fan.
            James MacPhail measured a 4 degree increase was noted at
            33.3 MHz. See later in this document for more thermal
            information. Additional cooling may not be absolutely
            necessary, but one Quadra 700 which I upgraded to 33 MHz
            failed at that speed after two hours of operation. Adding
            a cooling fan allowed that machine to operate reliably.
            If your machine crashes or locks up after several hours of
            operation, you may improve reliability by adding a cooling
            fan.=20
               =20
            WARNING: Do not let your Quadra 700 run too long with
                     the cover off. It needs the cover on to properly
                     direct air past the CPU heat sink. One Apple
                     source stated that the motherboard is known to
                     die after 20 minutes of open air operation.          =
=20
          =20
          =20
PROCEDURE

1)  Insert usual disclaimer and anti static warnings here. I can take
    take no responsibility for damage you do to your own machine.
    Undertake this modification only if you are well qualified.=20
    PROCEED AT YOUR OWN RISK.

2)  Back up your hard drive. If your Mac is incapable of operating at
    the speed you select, it may trash the data on your drive. See
    the warning by Rainer Menes at the end of this document.

3)  Remove the top lid of the machine. You will see the floppy disk and
    hard drive mounted in a plastic tower. Follow strict anti-static
    precautions and make sure the machine is OFF. Unplug ALL cables,
    wall and monitor power supply cords from the back of the Mac.
=20
4)  Remove the power supply by pulling the plastic interlocking tab on the
    tower forward and simultaneously pulling the power supply straight up.
    The tab is a piece of plastic from the left posterior aspect of the
    tower which extends downward to hook on to the power supply. You may
    also feel a horseshoe shaped piece at the right portion of the power
    supply. Leave that alone. The plastic tab from the tower is all you
    need release.
=20
5)  Look at the rear of the tower assembly. You will see the flat ribbon
    SCSI connector to the hard drive, a power cable and a flat ribbon cable
    leading to the floppy drive. Disconnect all these from the motherboard.
    The hard drive power cable connector has a tab which must be squeezed
    to release it.
                                           =20
6)  Unplug the drive activity LED from its clear plastic mount

7)  Look down the posterior, cylindrical section of the plastic tower. A
    Phillips head screw is at the base. Remove it, taking care not to drop
    it into the case. A bit of gummy glue on your screwdriver is helpful
    here.

8)  Remove the tower assembly by pulling medially the plastic tab on the
    rear right side of the tower. This tab prevents the tower from sliding
    posteriorly. Slide the entire tower assembly 1 cm posteriorly then
    lift the tower assembly straight up and out of the case.

9)  Remove the interrupt switch assembly. It is a strangely shaped plastic
    device at the left, front edge of the motherboard. Pull the middle,
    rear plastic prong up and forward. The entire device will release.
       =20
10) Unplug the speaker cable. Squeeze the plastic tab on the speaker to
    free it. Swing the fan backwards to free it from the case.
       =20
11) Remove the motherboard from the case. Lift the front right corner of
    the motherboard about 1 mm. This allows it to clear the clear plastic
    light guide. Slide the motherboard forward about 1 cm. Be very gentle
    You should not require great force. Once slid forward, the motherboard
    lifts easily out.
       =20
12) Locate the 50 MHz clock crystal. It is a small metal box near the
    CPU chip. Note and remember its orientation. The new clock oscillators
    must be aligned with pin 1 (the square corner) in the same orientation.
    Plug an oscillator in backwards and it will be destroyed.
       =20
    For your information the pin assignments are:


             --------------
            | 14         8 |           1  Ouput Enable
            |              |           7  Gnd/Case Gnd
            |              |           8  Output
            | 1          7 |          14  V dc (+5)
            L--------------

    Very carefully desolder and remove the old clock oscillator. Some of
    the pins may be bent over. Simply desolder then unbend them. Pin 7
    is directly attached to the metal can and absorbs a great deal of
    heat before melting. Be sure your desoldering iron is hot enough
    before doing pin 7. It is reasonable to desolder the other pins
    first. NEVER use any force on the motherboard. The oscillator should
    practically fall out on its own.

    Tip: Put a small amount of soldering flux on the joints before
    desoldering. This can greatly speed the process, especially on pin 7.=
=20
      =20
13) Install your socket or socket pins where the old oscillator once was.
    If you are using socket pins, simply put them on an oscillator and
    use the oscillator to hold them in place while you solder the pins.

    WARNING: If you use plain socket pins, leave the leads of your clock=20
    oscillators long enough to keep the can from touching the pins and
    shorting out the circuit board!

14) Put a 50 MHz clock oscillator into the new socket. You could use the
    old clock but it has solder on its pins. This can come off inside the
    socket and cause corrosion problems later. I suggest using a new
    50 MHz clock. NEVER plug the old clock oscillator into plain socket
    pins. The leads are too short to keep the can off the pins.
      =20
    Again, watch the orientation of the oscillator when you plug it in. It
    goes in the same orientation of the other clock oscillator next to=20
    your new socket. Reversal will destroy the clock oscillator.
=20
15) Install your (optional?) cooling fan system to complete the
    modification. I used two 1 1/4 inch sheet metal screws through the
    fan's mounting holes and into the gaps between the fingers of the
    heatsink to hold the fan in place. Power was tapped from the hard
    drive's 12 volt line on its power cable. This is the yellow or orange
    wire on the harness. Ground is either of the middle, black wires.
    If the fan is too noisy, try tapping the +5 supply (red) instead.
    The fan will run quietly and slowly but will move enough air to
    cool the CPU. Some of the very low profile fans will not run on +5.
    I place four 1/4 watt resistors which have been wired in parallel
    with each other in series with the fan's 12 volt supply for that
    type of fan.
       =20
16) Reinsert the motherboard and slide it into place.

17) Snap in the interrupt switch assembly and speaker to lock the mother
    board firmly. Plug the speaker wire back into the motherboard.
       =20
18) Reinstall the tower assembly by first placing the right wall of the
    tower against the right wall of the case with the tower assembly about
    1 cm posterior of its intended position. Lower the tower assembly into
    place while maintaining contact with the right wall of the case.
    Once fully down, slide the tower assembly anteriorly until it clicks
    into place.
       =20
19) Reconnect the motherboard ends of the cables. DON'T FORGET THE    =20
    FLOPPY DRIVE CABLE.

20) Replace the Phillips head screw

21) Drop the power supply straight down into place until it clicks in.

22) Plug the hard drive activity light back into its clear plastic mount.

23) Reattach your cables and power cords. Cross your fingers and turn=20
    on the Mac. It should make the usual power on chord. If it doesn't,
    immediately turn of the power and recheck your work. If all is not
    well, you have my sincere condolences. Please report your failures
    to the network. The information may help someone else.
       =20
    Hopefully, all will work normally. Turn the machine back off and
    replace the 50 MHz clock oscillator with a faster one. Reboot and
    be astounded.=20
       =20
    You must run the machine for many hours before deciding
    a particular speed is truly usable. With my VSO, a machine lock-up
    could take 8 hours of operation to occur. In the brief time since
    modifying my clock oscillator (one week) I have not had a single
    problem.
       =20
Thanks to Rainer Menes, whose comp.sys.mac.hardware article prompted me
to try this modification. Thanks also to the following for submitting
reports allowing me to summarize the success rate of this procedure:

    Guido Paccagnella <guidop@conicit.ve>
    James MacPhail <jmacphai@cue.bc.ca>
    Charles Grosjean <charlesg@cco.caltech.edu>
    "Stuart R. Harper" <stuart%lorelei.ECE.Drexel.EDU@cbis.ece.drexel.edu>
    Rainer Menes <menes@statistik.tu-muenchen.de>
    "Eric D. Kemp '94" <edkemp@COLBY.EDU>
    Dan Winkler <dan_winkler@genmagic.genmagic.com>
    Rick Botman <rbot@well.sf.ca.us>
    Mark Newman <newman@calvin.fnal.gov> Holy Smokes!
    Doug_Steinfeld@vos.stratus.com
    Dustin Boyette <ldg@rock.concert.net>
    "Marc A. Tamsky" <banzai%cs@hub.ucsb.edu>
    Yushi Kaneda <kaneda@loki.stanford.edu>

Good Luck to all who attempt this modification. There is a small but real
risk, but you will likely reach Quadra 950 speeds or higher with less than
$50 in parts. My personal Q700 at 33.3 MHz with an external memory cache
benchmarks faster than a 950. I pass this information along as a very
pleased techie.

Guy Kuo <guykuo@u.washington.edu>

BTW: This same type of mod works for the IIsi, IIfx, Q900, Q950, Centris 61=
0
and Centris 650.
---------------------------------------------------------------------------
And now an important caveat from Rainer Menes

From: menes@statistik.tu-muenchen.de (Rainer Menes)
Subject: WARNING: Q700 clock upgrade to 33MHz
Keywords: test your machine very carefull!!!!
Date: 10 May 93 08:43:41 GMT
Organization: Technische Universitaet Muenchen, Germany

Hi all,

Yesterday I have encountered on the Q700 of a friend of mine some very stra=
nge
problems. It looks as if the RAM on the motherboard (80ns DRAM) isn't able =
to do
33.33 MHz) Sometimes it fails and may damage your hard disk or what ever. T=
his
problem varies from board to board. Mine works perfectly under any tested c=
ondition
with 33.33 MHz.=20

So here my warning:

TEST your upgraded Quadra 700 very carefully. Run it under full load a mini=
mum
of 24 hours with, for example, a POVRay picture, which uses most of the
components in your Quadra 700 (CPU, FPU, SCSI, DRAM, VRAM ...). After that =
run a
memory test for another 12-24 hour. If your Quadra doesn't show any problem=
s you can
be 99% sure that it runs at 33MHz. 1% is left over sorry, but no risk no fu=
n.

To be 100% on the safe side make your room a little hotter than normal when=
 you run
the tests. This gives you more security and the 1% probability of problems =
is now
smaller than < 1%.

Another tip, if you have not done a backup of your harddisk do it now befor=
e
you upgrade. This will give you a better sleep with out nightmares.

Good luck for all how have or think about upgrading to 33MHz,

Rainer
---------------------------------------------------------------------------
I include an informative temperature & performance report from James MacPha=
il

Date: Thu, 22 Apr 93 21:53:49 -0700  =20
From: James MacPhail <jmacphai@cue.bc.ca>=20
Subject: Quadra 700 osc upgrade temp results                               =
   =20


I have done some Q700 CPU temperature measurements using an HP 34401A
DMM with a Fluke 80TK temperature adapter. I placed the temperature
probe on the case of the CPU where it is exposed beside the heat sink,
as this is certainly not the place to measure the temperature most
accurately, the actual conditions are probably a bit hotter than
indicated.

Synopsis: The Q700 has a large design margin for CPU heat dissipation.
Increasing the clock speed by 33% increases the CPU case temp about 4
degrees, indicating an increase in power dissipation of 25%.

Machine configuration: Base machine + four 1M SIMM=D5s, Quantum LP52 drive.
(no additional cards or VRAM).
                                                                           =
   =20

With the box closed in the upright orientation, the equilibrium CPU        =
   =20

temperature was 37 degrees C at 25 MHz, and 41 degrees C at 33.3 MHz.      =
   =20

The temperature rose rapidly when the cover was removed: it was up 8
degrees in 5 minutes (and still rising). Room temp was 21 C (69 …

Showing first 20,000 characters of 22,613 total. Open the full document →

Date: Wed, 8 Feb 1995 19:15:37 -0600
From: kuiyu@mail.utexas.edu (Kui-yu Chang)
Subject:  apple-13in-monitor-fix-r2

Document : apple-13in-monitor-fix.txt
Revision : 2
Date     : 31 Jan 1995
composer : kuiyu@mail.utexas.edu
           CHANG, Kui Yu (Julian)

1  MONITOR
----------
AppleColor 13" High-Resolution RGB monitor

2  PROBLEM
----------
Powers itself off sporadically, green power light goes off with switch still
stuck at 'ON' position.

3  SOLUTION 1
-------------
Adjust the variable resistor on the _back_ panel of the unit.

DETAILS

- On older models, this is simply the topmost control with a
  "mini-sun" icon beside it. 
- On newer models, this is accessible only after removing the
  case. This resistor is labelled "Cut-Off".

The picture brightness level will vary with your adjustments.

COMMENTS

Normally, this solution only works if the problem was caused by a prior over-
adjustment of this particular control/resistor.  My experience with a working
monitor is that if this brightness setting exceeds a threshold, the monitor will
power off automatically. Resetting it to a normal level solves the problem.

For my case, this was not the cause and thus SOLUTION 1 did not work.

4  SOLUTION 2
-------------
Replace the High voltage resistor.
(the 'RED' block, to be called the 'block'henceforth)
This is the big(about size of 2 cigarette boxes piled), red block sitting on the
bottom shield, with 2 suction wires attached _and_ 2 wires soldered to it.
On it is the part no. 1-230-666-21.
One of the suction wires leads to a suction cap on the CRT(Cathode Ray Tube).

DETAILS

You can('might' for option c) get this from:

a) SONY dealer                  $66.68                  1-800-488-7669
   Authentic SONY part # 1-230-666-21

b) Computer Component source    $27.99                  1-800-356-1227
                                                  Fax : 1-800-926-2062
   OEM part, discount of $1.00 for qty of 11 or more.
   Remember to tell them you want a "Macintosh Replacement Part" :
        ORDER #34-480
        APPLE MO401 RGB HIGH VOLTAGE BLOCK  
        PART  #1-230-666-21	
   After you have specified the above info., the sales assistant might ask
   you "Is this a Flyback?". Remember to answer "Yes" although it is not.
   Otherwise the salesperson might say "Sorry we don't have the part".			
   They like to think of this as a "Flyback"

   Note 1 : Next day delivery cost $9.90
   Note 2 : They do handle International Sales, but transaction amt must
            exceed US$250
            (International Voice no. 1-516-496-8780)
            (International Fax no.   1-516-496-8984)

c) Apple dealer
   Apple part # 1-230-666-21, ask for # 34-484

COMMENTS

Some soldering is required(just 1 or 2 wires)

** Remember, it is advisable not to remove the original block before your
receive the replacement block. You might forget the orientation since the OEM
block doesn't look alike.

I ordered my part from b), which is an OEM replacement.
It has exactly the same functionality/dimension but does not look as pretty.

The replacement comes with a suction wire already connected, you plug the
other end onto the CRT. When removing the original cup, you just squeeze it.
There are 2 suction wires connected to the block, one goes to the CRT
and the other connects to a board component(fly-back).
You'll need to remove the Board suction wire connected to the original
defective block. Trick - push the suction wire against the block and then
release, the wire head has 2 ears that hook on to the gaps in the metal socket,
but the whole thing is pressured up with a spring.

After replacing this part, my monitor was up and working again!

5  ADVICES FROM OTHER PEOPLE
----------------------------
Below are abstracts of what people sent me to help, they should give you a
clearer picture.

________________________________________________________________________________
I recently performed some repairs to my Apple color monitor and thought
that I should share my experiences with the net.

I have an apple hi-res 13" RGB monitor.  Lately I've had problems with the
monitor cutting out (turning itself off completely).  This symptom is like
that described in an Apple recall, but my serial number was not included in
the recall.  According to Larry Pina's book, _The Dead Mac Scrolls_, the
problem can be remedied by adjusting a resistor labelled "cutoff".  Making
the adjustment allowed me to use the monitor, but each time I adjusted it
the picture became darker.  On the facing page in Pina's book, he tells
about replacing a high voltage resistor, but doesn't indicate if replacing
it solves the same problem as adjusting the cutoff resistor.  Anyway, I
decided to replace the resistor.  I ordered a new high voltage resistor
From Sony, using the part number in Dead Mac Scrolls.  The part, with
shipping and sales tax, was $62.  This component is the thing that attaches
to the wire with the suction cup plugged into the CRT.  I was a bit nervous
about messing around with the high voltage, but I discharged everything
with a grounded screwdriver.  It took me a little while to figure how to
unplug the suction-cup connector (you squeeze it).  Then, I had to unsolder
two leads and solder in the new part.  That was not too difficult.  There
appeared to be some grease under the suction cup, so I used automotive
dielectric silicone grease (for spark plug wires) when I reinstalled the
new part.  Finally, I reassembled the monitor, held my breath, and turned
it on.  Voila!  It worked.  I readjusted the cutoff resistor back to its
original setting, to make the picture brighter, and the monitor didn't cut
out.  Time will tell if the repair holds, but for right now I'm happy.

I hope these experiences will be useful to someone else.

David Allan
dallan@dow.com
________________________________________________________________________________
If your monitor shuts itself off after a random amount of time, one of the
likely sources of trouble is a defective high-voltage monitor.  This was
covered until March 31 by an unannounced warranty, but no longer.  :(

Before you give up hope, get Larry Pina's book, Macintosh II Repair &
Upgrade Secrets, and read pp. 53-54 for a quick fix anyone can do in 10
minutes that may save you an expensive trip to the shop.

I have repaired dozens of these. There are three common causes for the old 13"
monitor shutting off. two described by Pina, one not.

Symptom: Monitor appears to shut off. Green power light goes out.
-------
1) Adjust the cut-off a smidgen. Described by Pina. Never seen it help.
2) Replace the High voltage resistor block, Sony p/n 1-230-666-21. Has always
fixed this problem.
Expensive part and hard to find. I have 4 left from my old service shop
days. I'll sell 3 for $50 each. Requires soldering.

Computer Component source, 1-800-356-1227, has these for $26.99

Alternate Symptom: Monitor goes black or remains black at power up. Green power
-----------------  light stays on.
Good News: No parts cost. Not documented by Pina. This is usually caused by
cracked solder joints on the small PC board that plugs into
the back of the CRT. Touch up the solder joints, and you're back in business.
:)

Please don't mess with any of this unless you are an experienced hardware
technician with the required skills.
The color screen can retain a 45,000 volt charge if the bleeder resistor is
broken, and can kill you if you have a weak heart.
I do mean to scare you. This really can be dangerous if you do not know what
you're doing.

Jerry Stubbs				Andy Seligman
stubbs@cs.ukans.edu			braintech@aol.com
________________________________________________________________________________
The capacitor a stand alone component that is attached to the bottom shield.
It ties directly into the flyback and then into the CRT. No mistaking it....
It's rectangular in shape and red in color..... It also has one other cable
assy that plugs into the main logic board. Dealer cost for the part is $50.00
but they may not sell it to you. It's suppose to be installed by an
authorized tech so usually it will not be sold over the counter.

Roy H. Robinson
Roy_H._Robinson@onenet.com
________________________________________________________________________________
Thanks to :

wfc@eup.siemens-albis.CH         Wolf Christoph
dallan@na1.dow.com               David Allan
braintech@aol.com                Andy Seligman
Roy_H._Robinson@onenet.com       Roy H. Robinson
stubbs@cs.ukans.edu              Jerry Stubbs
kctg0864@uxa.cso.uiuc.edu        Kung Chyun Tang

and all who helped.

Date: 14 Jan 1993 20:51:14 -0700 (MST)
From: NOHL@CCIT.ARIZONA.EDU
Subject: video out from macs report for the world

From: Nohl Lyons

Here is alot of info from various sources including 
manufacturers.  I actually have much more information, but I 
thought that this alone might be overwhelming. If you need help 
making choices, let me know. 
-Nohl

(anything following a "> " is quoted from someone else. This is an 
internet tradition.)

First the word on the net; it has not yet been verified, but it 
appears to be accurate:
> -VideoMax from Workstation Technologies Inc. 
>  
> -RasterOps makes a product called the video expander.
> It costs about $400 (less ed disc) and you just
> plug your video output into it.  The box gives you
> output to a VHS recorder and will record anything that
> you would normally send to the screen.
> 
> The only problem is that it has to convert from th 60Hz
> of the Mac to the 30 Hz of the tape, so it does some strange
> things to make it work.  RasterOps will give you more info.


> Hi! Saw your message on sumex and thought I'd offer my thoughts 
> (don't have a concrete solution though). I too have a spigot on 
> my IIci and have run into the same problem, no way to go back out 
> to tape. I have however heard of a relativly inexpensive box that 
> will run, I think, black and white NTSC out of a Quadra's built 
> in video. I heard about it on sumex so you might post there to 
> see if anyone knows anything. I imagine it would be pretty high 
> quality. 
> 
> (This reminds me of a cool thing with the original Mac II's and 
> the original Apple video card -- with a 5$ cable that you could 
> build yourself, you would get NTSC output -- composite video --, 
> albeit in only 4-and8-bit color) 
> 
> The other thing I heard is that since SuperMac is coming out with 
> a full Toaster-Like system for the mac (card-based called 
> 'Digital Film' with a price tag of about $10k) they've also 
> upgraded the spigot pro (only as far as I know) with the ability 
> to go out to tape. VHS quality with a spigot is pretty hard to do 
> because they don't digitize the whole frame of video, only a 
> field (the odd or even numbered lines) and then collapse it, this 
> is why the aliasing and moiring is so bad on spigoted video (you 
> can't be the price/performance ratio of the spigot though!). 
> Plus, even if you could go out to tape at VHS quailty, you'd have 
> to have a Quadra 950, probably accelerated (is this what your 
> friend has?) to handle full screen/full motion video. 
> 
> What I'm thinking of doing is saving my money for a year or so, 
> because things are happening so quickly in the area of 
> compression. Video capture boards that support hardware 
> compression on the card (not software driver based compression 
> like the VDIG and QT 1.5's compact video) will allow full screen 
> video at 30fps on any competent Mac (probably like a IIsi on up). 
> Video spigots don't have anyplace for a daughter card on them 
> (this is how you would add hardware compression to an existing 
> board) and so I would plan on buying a new card when the next 
> generation of video capture technology gets cheap enough. Other 
> cards like the Radius and RasterOps (I think) support some kind 
> of hardware compression, but are really crippled as far as 
> capturing good video today. There's a great article (one of the 
> best I've read so far) in this month's MacWorld (I don't have it 
> handy but it's the one with the red cover). 

BTW
> Adobe Premiere is pretty essential for any out- to-tape solution. 
> It can generate EDLs (edit decision lists) and can control many 
> kinds of VTR decks, especially Sonys that have that pin-connector 
> on the back. That's Premiere 2.0. 
----

The following info is provided by MacWorld magazine and the 
associated manufacturers:

The TV Box
External NTSC device compatible with entire line of Apple's 8-bit and 
24-bit color video boards to produce the same output as the TV Board, 
without using another NuBus slot. Has exclusive GX filter to suppress 
color-bar distortion. $399. Generation X Technologies, 408/739-4570.


The TV Board
8-bit NTSC/PAL switchable NuBus video board that can be hooked up to 
cable-ready TV sets for use with desktop presentation applications. Board 
can also be hooked up to a VCR to enable taping of Mac output. $599. 
Generation X Technologies, 408/739-4570.


Radius VideoVision

24-Bit Interface Card with Video In and Video Out Capability for the 
Macintosh Quadra and II (NuBus) Series

Radius' VideoVision combines breakthrough hardware and software technology 
to enable mass distribution of powerful multimedia communications. 
Consisting of a sophisticated video interface card, an external breakout 
box for external video and audio connections, and comprehensive software 
controls, VideoVision enables users to integrate audio, graphics and video 
capabilities on the Macintosh. VideoVision offers immediate compatibility 
with all applications that support QuickTime, Apple's multimedia extension 
to its operating system software, allowing the capture of digital video 
infor- mation as QuickTime movies or still images. In addition, 
VideoVision supports both S-Video and composite video and multiple timings 
and resolutions, providing compatibility with a wide range of Radius, 
Apple, and other third-party computer displays and video formats.  

High Quality 24-bit Video Output

VideoVision is the first low-cost integrated Macintosh desktop product 
that enables high quality output directly from a Macintosh to videotape. 
This "print to video" capability allows for convenient and cost-effective 
distribution of a variety of presentations, from the simple slide 
presentation which incorporates QuickTime movies to the sophisticated 
multimedia presentation. The high quality of the video output is due to a 
unique filtering process which allows flicker-free 24-bit (16.7 million 
color) motion video graphics to be output from computer to videotape. 
Current alternative technologies for video output show intense flickering. 

Worldwide Video Standards Support

VideoVision supports worldwide video standards for both input and output 
as well as the ability to convert from one format to another. NTSC, PAL, 
and SECAM video standards are supported for video input and NTSC and PAL 
for video output. Both NTSC 3.58, used in the U.S., and NTSC 4.43, used in 
Japan, are supported. With video input, VideoVision automatically 
recognizes which standard to use and converts the data accordingly.

Real Time Video Window Resizing

VideoVision allows real-time resizing of a video window to any size the 
viewer desires, without significant loss of resolution. Several products 
now on the market allow video (TV, VCR, laserdisc) information to be input 
to the computer and viewed in a window on the computer display. However, 
many of these products either do not allow the window to be resized, or if 
they do, they lose significant resolution as the window is reduced. 

H-Bus Architecture For More Power and Future Expansion

Video manipulation requires the transmission of large amounts of 
information between various processor cards. VideoVision's H-Bus 
architecture allows transmission of data at transfer rates of 60 
Mbytes/second, overcoming the bandwidth limitations of the NuBus 
architecture. Information between boards can be transmitted much more 
quickly over the H-Bus. In addition, VideoVision will support adjoining 
NuBus communications and add-ons such as additional hardware 
compression/decompression, special effects, titling, chromakey, or other 
special purpose boards. 

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The following are tips from a video out consultant in Hawaii. 
This is their specialty, and they gave out this information 
freely. 

> Consumer Quality
> 
> Consumer quality video output can be achieved by using a low cost 
> converter box (cost: approximately $300 - $700), available from 
> many manufacturers, or directly from the composite or S-Video 
> output of a video card. In almost all cases, a QuickTime movie, 
> slide show, or MacroMind Director movie can be recorded in real 
> time to VHS, S-VHS, or Hi8 tape. The output quality of the 
> converter boxes or video cards is sufficient for titling home 
> videos and other projects --- for personal use. 
> 
> Industrial Quality
> 
> Industrial quality video output is achieved with a low cost scan 
> converter, such as the Mediator from VideoLogic, the 9101 from 
> Chromatek, etc. (cost: approximately $1,500 - $4,000). Some 
> converters are able to switch between underscan and overscan, 
> have flicker elimination and other features. These converters 
> produce a medium quality signal most appropriate for industrial 
> productions. A primary draw back of these units is that, in most 
> cases, they can not be synchronized or timed with the other video 
> gear. The composite or S-Video output of TrueVision�s NuVista 
> cards can be considered industrial quality. The signal is analog 
> encoded, but the encoder (which is built onto the card), has no 
> flicker elimination, comb or notch filters, nor image enhancing 
> circuitry. The composite and S-Video outputs of the NuVista cards 
> do NOT produce a broadcast quality signal. 
> 
> Broadcast Quality
> 
> A broadcast quality signal can be achieved in two ways. One is to 
> take the RGB output of a NuVista, Intelligent Resources Video 
> Explorer, or similar card and feed it through an encoder. The 
> driver of the video card should be set to interlaced. Encoders 
> convert the analog RGB signal digitally into a composite, 
> S-Video, and, in some cases, a component video signal. Most 
> encoders have image enhancing circuitry and filters built in, but 
> they lack flicker elimination and the ability to resize the 
> output video. Therefore, graphics and animations must be produced 
> carefully to conform to the necessary screen dimensions. Encoders 
> are priced between $2,000 and $10,000 and it is fair to say, you 
> get what you pay for. Several companies, including Faroudja, 
> manufacture encoders which output excellent broadcast quality 
> signals. 
> 
> The other method is to use a scan down converter, a device which 
> will accept interlaced and non-interlaced RGB signals from a 
> video card. Most scan down converters have built-in image 
> filtering techniques, enhancing circuitry, flicker elimination, 
> and the ability to switch from underscan to overscan. Some high 
> end models allow the user to resize and position the image 
> anywhere on the video screen, or zoom into a graphic and enlarge 
> a section of it to full video screen. Scan down converters can 
> produce the finest video picture in composite, S-Video, or 
> component output. Again, you get what you pay for, and prices 
> range from $10,000 to $25,000. 
> 
> Recording computer graphics or animations for broadcast purposes 
> rarely involves a real-time output of the signal, except when 
> recording a still image or title. 
> 
> Animation files played back in real-time on the computer, such as 
> QuickTime movies and accelerated Director files, run at different 
> speeds, depending on the computer they are played on. Animations 
> must be output on a frame-by-frame basis. This assures that 30 
> frames of animation are recorded to video every second. 
> 
> Frame controller programs control video tape and laser disc 
> recorders for frame-by-frame recording through a serial 
> connection between the computer and the video unit. Industrial 
> and broadcast video tape recorders and laser disc recorders can 
> be accurately controlled through their serial port, a feature 
> consumer equipment does not have. The video tape is first 
> blackened and striped with time code. The frame-by-frame 
> controlling program is then able to access any single frame on 
> the tape. 


tips:

> Because video is an interlaced signal, you should avoid single 
> pixel horizontal lines in your graphics and animations. These 
> produce flickering in a NTSC environment. A flicker elimination 
> filter will reduce the flickering, but a small degradation in 
> image sharpness occurs. Use horizontal lines that are 2, 4, 6, 
> etc. pixels wide (i.e., avoid odd numbered line widths). 

> Be careful with gradient fills. Video resolution is far below the 
> quality of your computer picture and gradient fills may result in 
> a stair step effect. This can be avoided by applying a little 
> noise to the image (for example, by using the noise filter in 
> Photoshop). 

> Caution must be taken when choosing your colors. As many 
> engineers will tell you, NTSC also stands for �Never The Same 
> Color.' The video signal strongly enhances colors, and they 
> appear quite different on a TV than they do on your computer 
> screen. As a general rule, colors with saturation or brightness 
> exceeding 75% should not be used. To avoid bleeding, stay away 
> from fully saturated colors, especially reds, as much as 
> possible. Avoid two high contrast colors next to each other, 
> bleeding may occur. Oasis from Time Arts is one of the only 
> programs which allows you to paint with video legal colors. This 
> program permits you to open existing files and make them video 
> legal. The NTSC legal filter from Photoshop (thank you John 
> Knoll) can be accessed in many programs and will convert your 
> files to NTSC legal colors. Anti-aliasing helps a great deal; use 
> a program like Smoothie or JAG to anti-alias your files. 
> RayDream, with our consulting help, added a check box in the 
> �Save As� dialogue for NTSC legal colors in JAG. By checking this 
> box, you can anti-alias a single file, a folder of files, or a 
> PICS file, making them NTSC legal at the same time. 

> The best way to assure your graphics and animations are action, 
> title, and color safe, is to constantly check them on an 
> inexpensive TV (don�t use an expensive monitor - other people 
> will watch your graphics on regular TVs). If you own a NuVista 
> card, connect the composite output to a TV and regularly check 
> your files on it. You will instantly see the difference in 
> colors. A red on your computer screen may look dull and faded, 
> but will appear bright and lively on the TV. If your video card 
> cannot output a composite video signal, invest in a cheap 
> converter box. This will allow you to see the image you are 
> working on displayed on a connected TV at the same time. 

�