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#retrodev

8 posts8 participants2 posts today

#Z80 question for experts even though I have a lot of experience with it: the Zilog manual says that the IX/IY offset is relative (signed) but I have _never once_ seen negative offsets used in the wild, e.g. `ld A, [IX-$20]`, I'm not sure all assemblers even support "-" instead of "+" in IX/IY instruction, mine doesn't yet and I'd prefer to confirm this with others first.

-- edit: answer in the replies; it is signed!