Submitted by The source to the PC card software developed by Aleph1 to control second processors on Acorn machines is now available under the GPL.
This software is responsible for providing a BIOS, drivers and interfacing with the RISC OS desktop when using x86 second processor cards in Acorn RiscPC machines or the slower x86 expansion cards which fit into Acorn podule slots.
3 people rejoice!
Haha! My thoughts exactly!
You just wanted the first post I bet….
While this may not be useful for most people (I think the fastest processor on a PC card was a 133mhz 5×86). It’s interesting to read the code to see how they actually achived it.
It has a pretty full PC BIOS which emulates most PC devices, including SVGA. The I/O routing to the ARM processor is pretty clever. I’ve only had the chance to read a bit, but it’s pretty clever considering how long ago it was done…