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== Loading instructions == These instructions load an 8-bit or a 16-bit value into one of the three registers.

'''CPX''' (Compare X) is a 65x instruction that compares the value of the [[X index register]] ...sbeliever on CPX: https://undisbeliever.net/snesdev/65816-opcodes.html#cpx-compare-index-register-x-with-memory

'''CPY''' (Compare Y) is a 65x instruction that compares the value of the [[Y index register]] ...sbeliever on CPY: https://undisbeliever.net/snesdev/65816-opcodes.html#cpy-compare-index-register-y-with-memory

...the [[O/V]] flag, effectively checking for a signed less-than comparison (compare [[BCC]] which is an unsigned less-than comparison). [[Category:GSU Control Instructions]]

...[[O/V]] flag, effectively checking for a signed greater-equal comparison (compare [[BCS]] which is an unsigned greater-equal comparison). [[Category:GSU Control Instructions]]

'''CMP''' (Compare) is a 65x instruction that compares the value of the [[accumulator]] to som ...sbeliever on CMP: https://undisbeliever.net/snesdev/65816-opcodes.html#cmp-compare-accumulator-with-memory

'''CMPW''' (Compare Word) is an [[SPC700]] command that performs a comparsion between [[YA]] an [[Category:Two-byte Instructions]]

Unlike the [[X index register]], there are no instructions to transfer value of the [[stack pointer]] to/from Y. [[CPY]] can compare it to something.

'''CMP''' (Compare) is a [[Super FX]] instruction that compares the operand register with the [[Category:Two-byte Instructions]]