Changes

MOS 6502

5 bytes added, 14 March

/* Instruction Execution Sequence */

As an example, let M[$42]=$80, M[$43]=$10 and Y=$F1.

~~The~~ Then the instruction LDA ($42),Y will execute as follow, with ϕ2 as the first half-cycle and ϕ1 as the second half-cycle:

*T0: Fetch opcode $B1 (LDA (zp),Y) from memory then increment PC

*T1: Fetch operand byte $42 (zero page pointer address) then increment PC

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