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LDY

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Revision as of 01:18, 20 November 2023 by Xetheria (talk | contribs) (dp alignment penalty)
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Basic Info
Addressing Mode Opcode Length Speed
immediate A0 2 bytes 2 cycles*
absolute AC 3 bytes 4 cycles*
direct page A4 2 bytes 3 cycles*
absolute indexed X BC 3 bytes 4 cycles*
direct page indexed X B4 2 bytes 4 cycles*
Flags Affected
N V M X D I Z C
. . . . . .

LDY (Load Y) is a 65x instruction that loads the Y index register. In direct page addressing modes, LDY takes another extra cycle if the low byte of the direct page register is nonzero.

See Also

External Links