IIsi ROM

2 replies [Last post]
Offline
Joined: Nov 3 2012
Posts: 6

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

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
aladds's picture
Offline
Joined: Dec 26 2003
Posts: 297
Re: IIsi ROM

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.

__________________

Next Task - Where every day there's something new (usually)
http://next-task.blogspot.com

Dr. Webster's picture
Offline
Joined: Dec 19 2003
Posts: 1687
Re: IIsi ROM

aladds wrote:

The IIsi shouldn't need a rom SIMM, mine never had one..

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.

__________________

Applefritter Admin