Deep IIci rejuvenation, possible ROM select problem — #25
For those 68k diehards that see this and think that I've sacrificed the authenticity of this logic board by removing the original PROMs and installing newfangled socketed PLCC Flas…
Found 12,883 posts across 1 forum.
LC II Buying info? — #13
but there was never really a call for a dual-floppy LC since most color software took up more than one 1.4MB disk, especially those that came out right after the LC was released.
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Deep IIci rejuvenation, possible ROM select problem — #24
UPDATE
I have acquired some PLCC-32 to DIP-32 adapters and installed them in place of the onboard ROMs of this Mac IIci.
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How do you know if its the orginal Macintosh M0001 model? — #36
Anonymous Freak – check this out regarding 128K SIMMs.
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D-OH! :I
Obviously I was wrong on the capacity of the individual SIMMs, but I was also wrong on t…
How do you know if its the orginal Macintosh M0001 model? — #35
If you just want a functional compact Mac, then you would be better to get a 512k or 512ke motherboard until you can manage to get your hands on a 128k motherboard. The 128k is a v…
How do you know if its the orginal Macintosh M0001 model? — #34
It's my understanding that the SegmentLoader only read program segments FROM the floppy disk, and didn't write them back to the disk. Is that true?
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Usually s…
How do you know if its the orginal Macintosh M0001 model? — #33
I have to say that it will be a lot of work to get that board back to original condition or at least functionally original. The missing chips will have to be found and if the RAM o…
How do you know if its the orginal Macintosh M0001 model? — #32
With 128K the OS is forced to swap out program segments to the 400K floppy, and it is SLOW!
Click to expand...
It's my understanding that the SegmentLoader only read program se…
How do you know if its the orginal Macintosh M0001 model? — #31
To get the board to work (as 128K) you need to plug 74LS244s into the 2 big sockets, and resistor packs into RP2 and RP3. The resistor packs need to be 10 pins each with 5 individu…
How do you know if its the orginal Macintosh M0001 model? — #30
Now as you can see from the pictures, there are two chips missing/removed from the mobo. My question is, can i still start(power on) this mac without the MacMemory RAM board? ... D…
How do you know if its the orginal Macintosh M0001 model? — #29
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…
How do you know if its the orginal Macintosh M0001 model? — #28
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…
How do you know if its the orginal Macintosh M0001 model? — #27
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…
How do you know if its the orginal Macintosh M0001 model? — #26
...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…
How do you know if its the orginal Macintosh M0001 model? — #25
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…
How do you know if its the orginal Macintosh M0001 model? — #24
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…
How do you know if its the orginal Macintosh M0001 model? — #23
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,…
How do you know if its the orginal Macintosh M0001 model? — #22
2x256+2x1MB,
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Of course, that's 2.5MB! :I
How do you know if its the orginal Macintosh M0001 model? — #21
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+…
How do you know if its the orginal Macintosh M0001 model? — #20
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 …
Greatest Tip Shop score EVER!!!!!!!!! Sage iMac DV+!!! — #27
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…
Greatest Tip Shop score EVER!!!!!!!!! Sage iMac DV+!!! — #26
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.
Click to ex…
Greatest Tip Shop score EVER!!!!!!!!! Sage iMac DV+!!! — #25
Another note, I use tiger as my OS of choice on my 350MMHZ Slotloader and 'tis is fine.
How do you know if its the orginal Macintosh M0001 model? — #19
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…
Recently Conqesterised, and… — #7
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…