Hi,
I have a Macintosh IIsi that needs a ROM SIMM it seems. It will not boot, it shows only a grey screen.
I have looked for months trying to figure out if any other ROM will work with the IIsi, because I have not been able to get a hold of a IIsi rom.
If anyone knows where I can get a IIsi ROM or a rom that will work with the IIsi I would be grateful.
edit by eeun: moved to 68K from Apple II forum
The IIsi shouldn't need a rom SIMM, mine never had one.
Have you tried swapping around RAM modules, taking of any PDS cards, playing with SCSI IDs?
If you get a grey screen then something has loaded, certainly. No ROM would cause it to stay black.
IIRC the early IIsi's used a ROM SIMM, while later ones had the ROM integrated into the board (but kept the SIMM slot for whatever reason). In fact, if memory serves a popular upgrade for the Mac SE was to swap in a IIsi ROM SIMM so the system could be 32-bit clean.