Message #241044

[Xeda112358]

That is a pretty useful command, especially if you need more registers, or you need to preserve some and you don't use interrupts. I personally rarely use interrupts, so super complicated math functions get to use b'c'd'e'h'l'

So details:
4 cycles, 1 byte, hex code: D9
Swaps registers with shadow registers


So as a really poor example, say I need to copy some data to memory somewhere, but I need to preserve all registers for some reason. Also, assume you don't need interrupts

Code: Select All | Copy To Clipboard

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di exx ld bc,768 ld hl,BufData ld de,plotSScreen ldir exx

And yay, your registers are preserved