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hth313
searching PlanetScale…
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by
hth313
5y ago
I looked at the Mega65 with its three (not quite) 6502 CPU variants and I just found it so weird. Basically no 16 bit operations, instead a couple of 32 bit operations. Z register is no longer 0 and you have to set it non-zero to change ban
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by
hth313
5y ago
You can work with 24 bit pseudo registers in the direct page using the [dd],y addressing mode, basically scaling up the very useful (dd),y on the 6502 to be 24+16 bits instead of 16+8. I am currently working on a compiler for the 65816 and