Infineon Technologies C166S V2 User Manual page 314

XORB
Group
Syntax
Source Operand(s)
Destination Operand(s)
Operation
(op1) ← (op1) ⊕ (op2)
Description
Performs a bitwise logical EXCLUSIVE OR of the source operand specified by op2 and
the destination operand specified by op1. The result is then stored in op1.
CPU Flags
E Set if the value of op2 represents the lowest possible negative number.
Cleared otherwise. Used to signal the end of a table.
Z Set if result equals zero. Cleared otherwise.
V Always cleared.
C Always cleared.
N Set if the most significant bit of the result is set. Cleared otherwise.
Encoding
Mnemonic
XORB Rb
XORB Rb
XORB Rb
XORB Rb
XORB mem , reg
XORB reg , #data8
XORB reg , mem
User Manual
Logical Exclusive OR
Logical Instructions
XORB op1, op2
op1, op2 → BYTE
op1 → BYTE
E Z
* *
, #data3
n
, Rb
n m
, [Rw +]
n i
, [Rw ]
n i
Detailed Instruction Description
V C
0 0
Format
59 n:0###
51 nm
59 n:11ii
59 n:10ii
55 RR MM MM
57 RR ## xx
53 RR MM MM
8-314
User Manual
C166S V2
XORB
N
*
Bytes
2
2
2
2
4
4
4
V 1.7, 2001-01