PM Opc NOT

NOT = Logical NOT

Hex	Mnemonic	Cycles
CE A0	NOT A	12
CE A1	NOT B	12
CE A2 nn	NOT [N+#nn]	20
CE A3	NOT [HL]	16

Execute

A       = Register A
B       = Register B
[N+#nn] = Memory: (I shl 16) or (N shl 8) or #nn
[HL]    = Memory: (I shl 16) or HL

; NOT Ds
;
; Ds = Source/Destination

Ds = Ds XOR $FF

Description

8-Bits Destination is inverted (all bits).

Conditions

Zero: Set when result is 0

Sign: Set when bit 7 of the result is 1

Carry and Overflow remain unchanged

Examples

; A = 0x01
NOT A
; A = 0xFE
; F = (Zero=0):(Sign=1)

; B = 0x85
NOT B
; B = 0x7A
; F = (Zero=0):(Sign=0)

; [HL] = 0xFF
NOT [HL]
; [HL] = 0x00
; F = (Zero=1):(Sign=0)

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