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MOV
MOVE
(BYTE
OR
WORD)
MOV
Encoding:
Memory Operand to
Accumulator:
11
01
0000
w 1
addr-Iow
1
addr-high
if
w = 0
then
SRC =
addr,
DEST =
AL
else
SRC =
addr+
1
:addr,
DEST = AX
Accumulator to Memory Operand:
1101
0001
w 1
addr-Iow
1
addr-high
if
w = 0
then
SRC = AL, DEST =
addr
else
SRC = AX, DEST =
addr+
1
:addr
Memory or Register Operand to Segment Register:
11000111
0 Imod 0 reg
r/ml
if
reg *
01
then
SRC = EA, DEST =
REG
else
undefined
operation
Segment Register to Memory
or
Register Operand:
11
00011
00
Imod 0 reg r I
ml
SRC = REG,DEST = EA
MOV Operands
Clocks* Transfers Bytes MOV Coding Example
memory, accumulator
10(14)
1 3
MOVARRAYAL
accumulator, memory
10(14)
1 3
MOV
AX, TEMP
_RESULT
register, register
2.
-
2
MOVAX,eX
register, memory
8(12)+
EA
1
2-4
MOV
BP,
STACK_TOP
memory, register
9(13)
+
EA
1
2-4
MOV
COU
NT
[01],
ex
register, immediate 4
-
2-3
MOVCL,2
memory, immediate 10(14)+EA
1
3-6
MOV
MASK [BX] [SI],
2CH
seg-reg, reg16 2 -
2 MOV
ES,
ex
seg-reg, mem16
(12)
+
EA
1
2-4
MOV
DS,
SEGMENT_BASE
reg16, seg-reg
2
-
2
MOV
BP,
SS
memory, seg-reg
(13)
+
EA
1
2-4
MOV
[BX].SEG_SAVE,
es
*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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