COMF
Complement f
The contents of register ‘f’ are complemented. If ‘d’ is ‘0’, the result is stored in W. If ‘d’ is ‘1’, the result is stored back in register ‘f’.
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Syntax:
[ label ] COMF f,d
Operation:
NOT(f) → (destination)
Operands:
- f is from 0 to 127 (decimal)
- d can be either 0 or 1
Status Affected: Z
Example:
COMF REG,0
Before instruction:
REG = 0xF0 W = 0x01
After instruction:
REG = 0xF0 W = 0x0F
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Example:
COMF REG,1
Before instruction:
REG = 0xF0 W = 0x01
After instruction:
REG = 0x0F W = 0x01
