Difference between revisions of "PM Opc NOT"
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(New page: == NOT = Logical NOT == {| border="1" style="text-align:left" !Hex !Mnemonic !Cycles |- |CE A0 |NOT A |12 |- |CE A1 |NOT B |12 |- |CE A2 |NOT [N+#nn] |20 |- |CE A3 |NOT [HL] |16 |} === E...) |
m (→Conditions) |
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| Line 45: | Line 45: | ||
Sign: Set when 7th bit of the result is 1 | Sign: Set when 7th bit of the result is 1 | ||
| + | |||
| + | Carry and Overflow remain unchanged. | ||
=== Examples === | === Examples === | ||
Revision as of 20:06, 17 April 2009
NOT = Logical NOT
| Hex | Mnemonic | Cycles |
|---|---|---|
| CE A0 | NOT A | 12 |
| CE A1 | NOT B | 12 |
| CE A2 | 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 7th bit 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)
