Category:6502 Assembly: Difference between revisions
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===Zero Page Indirect, No X or Y=== |
===Zero Page Indirect, No X or Y=== |
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This one isn't available on the original 6502, only on its revision the 65c02. This behaves just like the two above, except it doesn't involve X or Y. Essentially this saves you the trouble of setting X or Y to zero temporarily just to do an indirect lookup without offsetting. |
This one isn't available on the original 6502, only on its revision, the 65c02. This behaves just like the two above, except it doesn't involve X or Y. Essentially this saves you the trouble of setting X or Y to zero temporarily just to do an indirect lookup without offsetting. |
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<lang 6502asm> LDA ($00) ;same as "LDA ($00),y" when y = 0</lang> |
<lang 6502asm> LDA ($00) ;same as "LDA ($00),y" when y = 0</lang> |
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