eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
250
OR A, (HL)
Logical OR
Operation
A ← A OR (HL)
Description
The (HL) operand is the 8-bit value located at the memory location specified by the con-
tents of the multibyte CPU register HL. This 8-bit value is logically ORed to the contents
of the accumulator, A. The result is written to the accumulator.
Condition Bits Affected
Attributes
S Set if result is negative; reset otherwise.
Z Set if result is 0; reset otherwise.
H Reset.
P/V Set if parity is even; reset otherwise.
N Reset.
C Reset.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
OR A, (HL) X 2 B6
OR.S A, (HL) 1 3 52, B6
OR.L A, (HL) 0 3 49, B6
To Next Page
Loading...