[fredoralive]

AFAIK most StarMax systems that were released (a prototype exists of a CHRP StarMax model) are based on the Tanzania / LPX-40 design, which is mostly a traditional PCI PowerMac[1], albeit with oddities like support for PC style floppy drives. PS/2 is handled by the CudaLite microcontroller which presents it to the OS as ADB devices for example. I've not heard of a version with ISA slots, although I assume you could just have a PCI to ISA bridge chip, even if MacOS presumably wouldn't do anything with it.

[1] https://cdn.preterhuman.net/texts/computing/apple_hardware_d...

[65a]

Right, I think those were the closest we got to the CHRP standard, as they moved the platform toward PC-style floppies, PS/2, ATX PSU and even more generic "platform" stuff than most clones. I'm fairly sure I had an ISA slot, I do remember trying to get a bargain bin NE2K card working in mine under linux (it didn't work). Definitely did nothing under OS 8/9.

The powercity models were interesting, because they came out after Apple revoked Motorola's clone license. A German company, ComJet, bought up the boards and sold unlicensed clones cheap. Case was slightly different, but otherwise they corresponded to StarMax models (fairly certain they were identical but may have been last revision boards).