43
The 68000's Instruction Set
Description: OR the source operand to the destination operand, and store the
result in the destination location.
Application: The OR instruction is used to set selected bits of the operand. For
example, we can set the four most-significant bits of a longword
operand in D0 by executing:
OR.L #$F0000000,D0
Condition codes: X N Z V C
- * * 0 0
Source operand addressing modes
Destination operand addressing modes
ORI OR immediate
Operation: [destination] ← <literal> + [destination]
Syntax: ORI #<data>,<ea>
Attributes: Size = byte, word, longword
Description: OR the immediate data with the destination operand. Store the
result in the destination operand.
Condition codes: X N Z V C
- * * 0 0
Application: ORI forms the logical OR of the immediate source with the
effective address, which may be a memory location. For example,
ORI.B #%00000011,(A0)+
To Next Page
Loading...
