Support for eZ80 in Z80 mode would be nice. But what I appreciate on
eZ80 most is 24-bit mode where I don't need to care for big memory access.
I tried to write app for Z180 where lot of memory was needed, mostly
code memory. And it was often hard work to decide how to optimize code
segmenting when something didn't fit in one segment. It would be really
super to use eZ80 with large linear memory layout without thinking of
best memory window layout.
Thanks,
Hynek Sladky
Dne 23.9.2018 v 16:23 Philipp Klaus Krause napsal(a):
How useful would it be to have better eZ80 support in SDCC? Are there
any SDCC users that target the eZ80?
There are 2 main differences between the Z180 and the eZ80:
* ADL mode: The 24-bit address mode (). Support for this would take more
effort.
* Z80 mode: The 16-bit load instructions (ld rr, (hl), etc). As we have
seenin the r2k and tlcs90 backends these really help with code size,
especially for handling pointers. Support for these should be much
easier to add to SDCC than support for ADL mode.
How useful would an ez80 backend in SDCC, which would generate code for
the Z80 mode of the eZ80 be?
Philipp
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