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LDX: Difference between revisions

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'''LDX''' (Load X) is a 65x instruction that loads the [[X index register]].  In [[direct page addressing]] modes, LDX takes another extra cycle if the low byte of the [[direct page register]] is nonzero.
'''LDX''' (Load X) is a 65x instruction that loads the [[X index register]].  In [[immediate addressing]] only, LDX is a total of 3 bytes long when the index registers are 16 bits wide.
 
===== Cycle Penalties =====
* In [[direct page addressing]] modes, LDX takes another extra cycle if the low byte of the [[direct page register]] is nonzero.
*
*


=== See Also ===
=== See Also ===

Revision as of 04:48, 20 November 2023

Basic Info
Addressing Mode Opcode Length Speed
Immediate A2 2 bytes* 2 cycles*
Absolute AE 3 bytes 4 cycles*
direct page A6 2 bytes 3 cycles*
absolute indexed Y BE 3 bytes 4 cycles*
direct page indexed Y B6 2 bytes 4 cycles*
Flags Affected
N V M X D I Z C
. . . . . .

LDX (Load X) is a 65x instruction that loads the X index register. In immediate addressing only, LDX is a total of 3 bytes long when the index registers are 16 bits wide.

Cycle Penalties

See Also

External Links

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