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)