A <- A ^ r
XOR
r
b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 |
---|---|---|---|---|---|---|---|
1 | 0 | 1 | 0 | 1 | r |
A logical exclusive-OR operation is performed between the contents of register r and the contents of the Accumulator. The result is stored in the Accumulator. The r symbol identifies the registers A, B, C, D, E, H, or L, assembled as follows in the object code:
Register | r | Hex |
---|---|---|
A | 111 | $AF |
B | 000 | $A8 |
C | 001 | $A9 |
D | 010 | $AA |
E | 011 | $AB |
H | 100 | $AC |
L | 101 | $AD |
S | is set if result is negative, otherwise it is reset. |
Z | is set if result is 0, otherwise it is reset. |
H | is reset. |
P/V | is set if parity even, otherwise it is reset |
N | is reset. |
C | is reset. |
If Register H contains $5D (0101 1101) and the Accumulator contains $96 (1001 0110), then upon the execution of
XOR H
the Accumulator contains $CB (1100 1011).