© 2000 Scenix Semiconductor, Inc. All rights reserved.
109
SX Users Manual Rev. 3.1
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Chapter 3 Instruction Set
3.6.39 OR W,#lit
OR of W and Literal into W
Operation:
W = W | lit
Bits affected:
Z
Opcode:
1101 kkkk kkkk
Description:
This instruction performs a bitwise logical OR of the contents of W and an 8-bit lit-
eral value, and writes the 8-bit result into W. If the result is 00h, the Z bit is set.
Cycles:
1
Example:
or
W,#$0F
;set four low-order bits of W
This example performs a bitwise logical OR of W with the literal value #0Fh. The
result is written back to W.
For example, suppose that W contains the value 50h. The instruction takes the
logical OR of this value with 0Fh and writes the result, 5Fh, into W. The result is
nonzero, so the Z bit is cleared.