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MICROPROCESSOR INSTRUCTION REFERENCE->DEX
Decrement Index Register
Compatibility: 6800, 6802, 6803, 6303R, 6303X, 6303Y
X - 1 -> X
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 | op | cyc | bytes | Assembler syntax |
Implied: | 09 | 1 | 1 | DEX |