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Individual Instruction Descriptions
4-147
Assembly Language Instructions
4.14.52 ORB Bitwise OR Byte
Syntax
[label] name dest, src
Clock,
clk
Word,
w
With RPT,
clk
Class
ORB A
n
,
imm8
1 1 N/R 2a
Execution
dest
⇐
dest
OR
src
PC ⇐ PC + 1
Flags Affected OF, SF, ZF, CF are set accordingly
Opcode
Instructions 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ORB A
n
,
imm8
1 0 1 0 1 0 0 A
n imm8
Description Bitwise OR byte of
src
and
dest
. Result is stored in
dest
. Only lower 8 bits of
accumulator is affected.
See Also OR, ORS, AND, ANDS, XOR, XORS, NOTAC, NOTACS
Example 4.14.52.1 ORB A2, 0x45
OR 0x45 immediate to accumulator A2 lower 8 bits.