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LDY: Difference between revisions

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(immediate could be 3 bytes)
(→‎See Also: TAY, TXY)
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* [[LDA]]
* [[LDA]]
* [[LDX]]
* [[LDX]]
* [[TAY]]
* [[TXY]]


=== External Links ===
=== External Links ===

Revision as of 09:37, 15 July 2024

Basic Info
Addressing Mode Opcode Length Speed
Immediate A0 2/3 bytes 2 cycles*
Absolute AC 3 bytes 4 cycles*
Direct Page A4 2 bytes 3 cycles*
Absolute Indexed by X BC 3 bytes 4 cycles*
Direct Page Indexed by 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 immediate addressing only, LDY takes a total of 3 bytes when the index registers are 16 bits wide.

Syntax

LDY #const
LDY addr
LDY dp
LDY addr, X
LDY dp, X
Cycle Penalties

See Also

External Links