Am 24.07.23 um 13:00 schrieb Alan Cox:
Some Z280 would be useful (the full Z280 assembler changes were already
done but never merged with upstream it seems). If it's just the R800 mul
and using ixl/ixh then it would have some use - and if it can be
done without the multiply also for Z80 only code where they are illegals
but always work.
We already have --allow-undocumented-instructions for z80.
So the new feature for r800 would basically be the multiplication
instructions + the different cycle count.
The big stuff in Z280 proper though is the stack relative and index
relative word operations which doesn't seem much different to the
existing paths for rabbit and ez80 ?
Yes. Still an r800 port would be less work, and benefit more users. So
it looks like a good choicec for something that could be ready for SDCC
4.4.0 to me.
Philipp
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