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MICROPROCESSOR INSTRUCTION REFERENCE->NEG

NEG   Negate (Twos Complement) Accumulator or Memory
NEGA
NEGB
NEG

A <- 00 - A or B <- 00 - B or M <- 00 _ M


Condition Code Register:

H  Undefined
N  Set if result Negative, else cleared
Z  Set if result Zero, else cleared
V  Set if original operand was &80
C  Set if borrow, else cleared

    

Addressing mode	No of cycles	No of bytes
Implied:	2	1
Direct:	6	2
Extended:	7	3
Index/Indirect:	6+	2+