Table of Contents        Previous topic       Next topic       

MICROPROCESSOR INSTRUCTION REFERENCE->DECA

DECA    Decrement Accumulator A

A - 1 -> A

Condition Code Register:

C  Not affected
V  Set if operand=%10000000 before execution, else cleared
Z  Set if result Zero, else cleared
N  Set if result Negative, else cleared
I  Not affected
H  Not affected


    

Addressing mode	Assembler syntax
Implied:	DECA