Thanks for the information; I suspected hardware info I was looking for about Macs weren't really available at all.

Good news about the Drivers and Cards book; if it only tells you how to add new hardware and interface it with MacOS then it's not really useful.

I was just skimming the A/UX 2.0 Toolbox ROM documentation, and it provides a sort of "layer" through which the kernel accesses ROM functions. What's interesting is that only some ROM functions are accessible, which is probably those which can be made to work safely within a Unix environment. If that is the case, I might be able to reproduce a similar mechanism under the Minix kernel, and provide the necessary hardware interfacing through the ROMs. That would make things much easier.

Thanks,

Antonio