> >It can be made by hardware, because Z380 has a special feature, like an
> >interrupt when an unknown command is found... So these instructions can
> >be redirected to another single processor that only execute these
> >instructions.
>
> That only works if the opcodes are unused (no instruction is mapped to
> them). But if a different Z380 instruction is mapped to the R800 opcode, it
> is not trapped but the (wrong) Z380 instruction is executed instead.
> I think the latter is the case: R800 opcodes speficy different instructions
> on Z380.
why not make some kind of mappingdevice (before the cpu) to map r800 ops
to z380 equivalents and remap all z380 ops that are used differently by
r800 to completely
different ops.
this way the z380 would become r800 compatible and still have it's
unique ops
greetz
akai
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