I have some spare 64K ROMs from dead boards, I should give it a go. Surely it couldn't damage anything?
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It ought to be safe. The 64K ROMs will only recognize…
I believe this details the procedure:
http://68kmla.org/files/classicmac2.pdf
I have no idea if the 128K SIMMs work with any Mac.
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Now if only you had…
...After you remove the RAM board, make sure you adjust the voltages which will fluctuate after removing the draw of the expansion board.
...
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How do I adjus…
68kMLAHardwareby gioliciousTue, 23 Mar 2010 - 03:27
I have no idea if the 128K SIMMs work with any Mac. I suppose I could try, though. At worst, it'll beep at me. (I could try it in pair with a couple known-size SIMMs, it would b…
68kMLAHardwareby Anonymous FreakTue, 23 Mar 2010 - 03:16
Agree with H3NRY. Almost all upgrade cards required 512K on the motherboard. However, correct me if I'm wrong H3NRY, a few bypassed the logic board altogether? It would be the exce…
The SE/30, with its eight banks, could do 1.5 MB, as 4x256 and 4x128, although I don't think 128s were officially supported, and were exceedingly rare. (I think I have two of them,…
68kMLAHardwareby Anonymous FreakTue, 23 Mar 2010 - 02:15
I recall the Plus supported 256KB SIMMs and 1 MB SIMMs, in any combination of pairs. So 2x256 (which would be strange, since it's lower than it shipped with,) 4x256, 2x1MB, 2x256+…
68kMLAHardwareby Anonymous FreakMon, 22 Mar 2010 - 23:25
What is the possibility that the mobo RAM chips were not upgraded to 512K?
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It is possible, but since it was much more common to upgrade the motherboard than …
Basically, I am, but I'm not. Like, I can use it, but I have to put up with my parents telling me about how Tracy Grimshaw or whoever the hell it is that does A Current Affair thes…
As much as I'd love to take it up to say, a gig...I can't imagine being able to find 2 512MB PC133 sticks around here for anywhere near a price that I'd want to pay.
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Your Mac shows 512K because it has the original 64K ROMs most likely. You actually have 1.5MB of RAM installed, it looks like. The mobo RAM chips have probably been replaced upgrad…
68kMLAHardwareby gioliciousMon, 22 Mar 2010 - 10:28
Sounds like typical symptoms of capacitor leakage. My Classic II gave me the jailbars a few years back, washed the board and although the sound never returned, the machine was as g…
Methinks the classic II is slightly dead.
Pulled the thing apart again, the motherboard was fairly free of dust. Examined the RAM and connectors, no tarnishing or discolouration.…
"Software for processor cards in PCI power macs is not *required* since it replaces the original processor. It will run just fine, except Apple System Profiler may not display the …
68kMLAHardwareby QuadramanMon, 22 Mar 2010 - 04:19
Austin's Goodwill Compter Works is excellent, and there are several other computer recycle / resale operations, as you'd expect in a university town.
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What ar…
68kMLAHardwareby redrouteoneMon, 22 Mar 2010 - 03:42
Well scored there LCGuy! Getting the machine over 512MB will make a big difference in OS X - but it should still run adequately. And they make great DVD players, especially with th…
Just a note/ flag that these are currently available at $1.99 each on ebay (with best offers available too) if you want to revive a PowerBook by replacing a dead backup battery. Th…
68kMLAHardwareby beachycoveSun, 21 Mar 2010 - 19:41
Sometimes if you leave it on for a long time (and we're talking anywhere from 30 minutes to 3 hours) it will just "mysteriously" chime and start up. I've done this on an SE/30 and …
Success!
It turns out that the problem was two-fold: first was the PRAM battery, second was a SCSI conflict. Both are two really newbie mistakes which shouldn't have taken 5 month…
Nope. No green lights inside a stock "Macintosh" or an OEM upgrade. If you have one, there's something undeniably foreign inside there. Can't imagine why there would be one inside …
Check the RAM. The checkerboard is different from the lines that you get with simasimac. Cleaning the connections with a pencil eraser and reseating the memory sometimes makes the …
68kMLAHardwareby QuadramanSun, 21 Mar 2010 - 07:59