Re: LZ: Anyone (successfully) used the EXX command?
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Mel Tsai wrote:
>
> I was trying out some new routines for the expander, and it would
> really help if I could use the register exchange command. However, I
> remember trying it before, and it didn't work. Has anyone used the
> EXX command? I'm wondering whether the processor in the TI-85 is a
> "true" Z80 or whether the custom design they used left out the
> alternate register set...
Robs greyscale routine uses EXX and EX AF,AF' to make some sort of push :)
But I think you only can use them in interrupts or when you have disabled
interrupts, because TI:s normal interrupt uses those registers.
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