Intel 210200-002 manual Or AL, BL

OR

LOGICAL OR OR

Encoding:

Memory or Register Operand with Register Operand:

100001 0 d w 1mod reg rIm 1

if d = 1 then LSRC = REG, RSRC = EA, DEST = REG else LSRC = EA, RSRC = REG, DEST = EA

Immediate Operand to Memory or Register Operand:

11 OOOOOOw Imod001 rIm 1 data· data if w=1

LSRC = EA, RSRC = data, DEST = EA

Immediate Operand to Accumulator:

\

10 0 0 0 1 1 0 w 1 data 1 data if w=1 1

if w = 0 then LSRC = AL, RSRC = data, DEST = AL else LSRC = AX, RSRC = data, DEST = AX

OR Operands	Clocks*	Transfers Bytes OR Coding Example
register, register	3	-	2	OR AL, BL
register, memory	9(13)+ EA	1	2-4	OR OX, PORT_10 [01]
memory, register	16(24) + EA	2	2-4	OR FLAG_BYTE, CL
accumulator, immediate	4	-	2-3	OR AL, 01101100B
register, immediate	4	-	3-4	OR CX,01H
memory, immediate	17(25)+ EA	2	3-6	OR [8X].CMO_WORO,OCFH

*b(w): where b denotes the number of clock cycles for byte operands and w denotes the number of clock cycles for word operands.

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