Table of Contents        Previous topic       Next topic       

MICROPROCESSOR INSTRUCTION REFERENCE->DEY

DEY    Decrement Index Register Y

Y - 1 -> Y

Condition Code Register:

C  Not affected
V  Not affected
Z  Set if result Zero, else cleared
N  Not affected
I  Not affected
H  Not affected


    

Addressing mode	Assembler syntax
Implied:	DEY