Tobias Fröschle wrote:
> - the 020 has an instruction cache - but that should not lead to
> problems with code run from ROM, as that cannot be very self-modifying ;)
The problem is not the OS but application programs doing this. In the
patched ROM the cache is cleared on every TRAP or exception, f
Thierry Godefroy wrote:
Wow, hello again :-)
> For all 680x0 CPUs above the 68000/8 (ie. for 68010/012/020/030/040/060s),
> the MOVE from SR instruction is priviledged while it is not for the
> 68000/8. This is the usual cause of incompatibilities for software
> written for the 68000 and ran on a
Dave Park wrote:
> It's been mentioned that vanilla QDOS/Minerva doesn't run happily on
> 68EC020 due to CPU differences. The GC/SGC copies and patches the OS to
> work with the EC020 CPU, and to relocate certain resources.
>
> My questions are: what are the differences? How does the GC/SGC boot th
