Dropping this here in case anyone is wondering about how the 65816 has no TAB or TBA instruction. I figured this was a good opportunity to learn how to create synthetic instructions/macros. This is what I came up with:



The index clobbering versions can easily be made to work with Y instead. Are these routines as fast as they can be?

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x86?  We ain't got no x86.  We don't NEED no stinking x86!

Transfer A to B, I'd presume.

I read a Visual Basic 6.0 book once that said unless your hardware drinks soda, it does not hiccup. I believe ghost/phantom interrupts are a counterexample to this, so my synthetic TAB instruction allows the 65816 to consume soda to generate more ghost/phantom interrupts.

*joke mode off* Yes, they transfer the low and high bytes of the accumulator to each other. I'm just having fun