Intel iAPX 86/88 User Manual page 50

8086/8088 CPU
Table 1-16 Instruction Set Refere"ce Data (continued)
MOVS
I
MOVS dest-string, source-string
Move string
Flags
0
D I T 5 ZAP C
Operands Clocks
Transfers· Bytes Coding Example
dest-string, source-string 18(9) 2 1
MOV5 LINE EDIT_DATA
(repeat) dest-string, source-string 9+ 17/rep 2/rep 1
REP MOV5 5CREEN, BUFFER
(8+8/rep)
MOVSB/MOVSW
I
MOVSB/MOVSW (no operands)
Move string (byte/word)
Flags 0 D I T 5 ZAP C
Operands Clocks Transfers· Bytes
Coding Example
(no operands)
18(9) 2 1 MOV5B
(repeat) (no operands) 9 + 17/rep
2/rep 1 REP MOV5W
(8+8/rep)
MUL
I
MULsource
Multiplication, unsigned
FI
0
D I .T S ZAP C
ags
x
UUUUX
Operands Clocks
Transfers·
Bytes
Coding Example
reg 8 70-77
-
2 MULBL
(26-28)
reg 16 118-133
-
2 MULCX
(35-37)
mem8
76-83+
1 2-4 MUL MONTH [51)
EA(32-34)
mem 16
124-139+
1 2-4 MUL BAUD_RATE
EA(41-43)
NEG
I
NEG destination
Negate .
Flags 0 D I T 5 ZAP C
Operands Clocks Transfers· Bytes Coding Example
register 3(3)
-
2 NEGAL
memory 16(3)+EA 2 2-4
NEG MULTIPLIER
o
if destination is 0
NOP
I
NOP (no operands)
No Operation
Flags
°
D I T 5 ZAP C
Operands Clocks Transfers· Bytes Coding Example
(no operands) 3(3)
-
1 NOP
NOT
I
NOT destination
Flags
o
D I T 5 Z A.P C
Logical not
.
Operands Clocks Transfers· Bytes Coding Example
register 3(3)
-
2 NOT AX
memory
16(3)+EA 2 2-4 NOT CHARACTER
'For the 8086 (80186) add four clocks for each 16-bit word transfer with an odd address. For the 8088 (80188) add four clocks for each 16-bit word
transfer. .
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