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CPL

The CPL instruction logically complements the value of the specified destination operand and stores the result back in the destination operand. Bits that previously contained a 1 will be changed to a 0 and bits that previously contained a 0 will be changed to a 1.

CPL A
C AC F0 RS1 RS0 OV   P
Bytes 1
Cycles 1
Encoding
11110100
Operation
CPL
A = NOT A
Example
CPL A
CPL bit
C AC F0 RS1 RS0 OV   P
Bytes 2
Cycles 1
Encoding
10110010 bit
Operation
CPL
(bit) = NOT (bit)
Example
CPL 55h
CPL C
C AC F0 RS1 RS0 OV   P
Bytes 1
Cycles 1
Encoding
10110011
Operation
CPL
C = NOT C
Example
CPL C
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