Mac OS on ANS - Modding a ROM DIMM

gogopuffs said:

So, with all of the wackiness of porting things like Windows NT to PPC Macs, are we going to get modded ROMs for PowerMac 8500/8600/9500/9600 systems that can now run that funky AIX??!

Would be fun to play with!

Click to expand...

That would indeed be cool!

@Big Ben - would you be willing to document via shaky-cam mobile phone and upload to YouTube or Internet Archive and show the bootup/build process???

Thanks!!!

I’m afraid there is nothing special about booting MacOS it just boots like any other Power Mac: grey screen, happy mac and so on.
Open Firmware stuff was related to improper configuration.
Front LCD screen is disabled so nothing to see here too.

As far as building a ROM DIMM, I won’t be able to build others until someone design a new pcb board.

I just wanted to say thank you to Big Ben, John, joevt, stynx, dougg3, Eric & jocketlill.

It is absolutely amazing to see everyone come together to make something amazing happen!!!

If anyone is thinking about making a custom rom board, let me know. I was thinking of reaching out to Joe to see if we could get a blank SIMM created.

bitsavers website has PowerSurge Flash ROM pictures and schematics.
http://bitsavers.org/pdf/apple/powerpc/PowerSurge/ROM_Flasher/