On Sun, 23 Jul 2023 10:19:32 +0200
Philipp Klaus Krause <p...@spth.de> wrote:

> I wonder if SDCC users would be interested in an r800 port (and maybe 
> help a bit with the work).
> This port would target the R800 (its instruction set is a superset of 
> the Z80 and subset of the Z280), and thus be useful to both R800 and 
> Z280 users.
> 
> Feature request: https://sourceforge.net/p/sdcc/feature-requests/882/
> 
> The effort required would be substantially less than for a full z280 port.

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.

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 ?

Alan



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