M166 Datasheet, PDF (92/127 Pages) Siemens Semiconductor Group – C16x Family of Siemens 16-Bit CMOS Single-Chip Microcontrollers

30Mar98@15:00h
C166 Family Instruction Set
Instruction Description
ORB
Logical OR
ORB
Syntax
Operation
Data Types
Description
ORB
op1, op2
(op1) ← (op1) ∨ (op2)
BYTE
Performs a bitwise logical OR of the source operand specified by op2 and
the destination operand specified by op1. The result is then stored in op1.
Condition Flags
E
Z
V
C
N
*
*
0
0
*
Addressing Modes
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.
Mnemonic
ORB
ORB
ORB
ORB
ORB
Rb_n, Rb_m
Rb_n, [Rw_i]
Rb_n, [Rw_i+]
Rb_n, #data3
reg, #data16
ORB
reg, mem
ORB
mem, reg
Format
71 nm
79 n:10ii
79 n:11ii
79 n:0###
77 RR ## xx
73 RR MM MM
75 RR MM MM
Bytes
2
2
2
2
4
4
4
Semiconductor Group
92
Version 1.2, 12.97