Zero page addressing
Zero page addressing is a form of memory addressing that uses only the zero page of the 6502 microprocessor. It takes advantage of the memory addresses of the zero page ($0000 to $00FF by leaving off the first two zeros and thus saving a byte.
Zero page addressing is written in 6502 ASM by simply leaving off the first two zeros in the memory address.
LDA $09
This would load the value in memory location $0009 into the accumulator.
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page revision: 9, last edited: 15 Jul 2012 06:13