> On Jan 17, 2023, at 04:52, Peter Coghlan via cctalk <cctalk@classiccmp.org> > > How about translating code from Z80 which has several registers to 6502 with > rather fewer? That would seem to need some more intelligent thinking on > how to simulate the unavailable registers without causing additional > difficulties. > > Regards, > Peter Coghlan. That would be not much different than compiling code (say, C) for the 6502. One need not “simulate” anything. One could use the stack plus perhaps a bit of so-called heap storage to manage register allocation, along with translating ( perhaps with optimization ) the instruction stream. Dealing with changed 8080 stack offsets from the original code would be tricky.
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