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Hardware based on processors
The Visual 6502
rene.bauer
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The designers figured that you'd use X and Y for looping, indexing etc, and use A for adding and subtracting, shifts etc. So they saw a need for INX and INY, but didn't see a enough of a need for an instruction to increment or decrement the accumulator.
6502asm.com v1.2 - World's first fantasy console!
The Visual 6502
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6502
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The Visual 6502
http://www.visual6502.org/JSSim/
6502
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