Op 2020-04-27 om 18:28 schreef Florian Klaempfl:
I have no idea, but quickly read through some docs, and it seems the
GameBoy CPU doesn't have IX/IY registers, which seems to be very
useful to
implement some of the more complex references handling, according to
what
Nikolay wrote earlier.
Yes. IX and IY are the key for the FPC Z80 port. Without them it's
getting really difficult. And I suspect we need to work without a
normal stack but allocate local variables globally, so basically no
recursion will be possible.
Well, for 6502 working 16-bit ptr indirect via volatile zp memory
locations needs to be implemented anyway :-)
Does that CPU have no hardware stack at all, or only limited (128/256
bytes or so?)
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