Intel iAPX 86/88 User Manual page 49

8086/8088
CPU
Table 1-16 Instruction Set Reference Data (continued)
LODS
I
LODS source-string
Load string
Flags a D ITS ZAP C
Operands Clocks Transfers· Bytes Coding Example
source-string 12(10) 1 1 LODS CUSTOMER_NAME
(repeat) source-string 9+ 13/rep 1/rep 1 REP LaDS NAME
(6+ 11/rep)
LOOP
I
LOOP short-label
Loop
Flags a D ITS ZAP C
Operands
Clocks
Transfers·
Bytes
Coding Example
short label 17/5(15/5)
-
2 LOOP AGAIN
LOOPE/LOOPZ
I
LOOPE/LOOPZ short label
Flags
00
ITSZAPC
Loop if equal/Loop if zero
Operands Clocks Transfers· Bytes Coding Example
short label 18 or
-
2 LOOPEAGAIN
6(16 or 6)
LOOPNE/LOOPNZ
I
LOOPNE/LOOPNZ short label
Flags
ODITSZAPC
Loop if not equal/Loop if not zero
Operands
Clocks Transfers· Bytes Coding Example
short label
19 or
-
2
LOOPNE AGAIN
5(16 or 5)
NMlt
I
NMI (external nonmaskable interrupt)
Flags
00
I TSZAPC
Interrupt if NMI
=
1
00
Operands Clocks Transfers· Bytes Coding Example
(no operands) 50
5 N/A N/A
MOV
I
MOV destination, source
Flags
ODITSZAPC
Move
Operands
Clocks Transfers· Bytes
Coding Example
memory, accumulator 10(9) 1 3
MOV ARRAY [SI], AL
accumulator, memory 10(8) 1 3
MOV AX, TEMP_RESULT
register, register 2(2)
-
2
MOVAX,CX
register, memory 8(12)+EA 1
2-4 MOV Sp, STACK-TOP
memory, register 9(9)+EA
1 2-4 MOV COUNT [DI], CX
register, immediate 4(3-4)
-
2-3 MOVCL,2
memory, immediate 10(12-13) 1 3-6
MOV MASK [SX] [SI], 2CH
+EA
seg-reg, reg 16 2(2)
-
2
MOVES,CX
seg-reg, mem 16 8(9)+EA 1 2-4
MOV DS, SEGMENT_SASE
reg 16, seg-reg 2(2)
-
2
MOV Sp, SS
memory, seg-reg 9(11)+EA
1 2-4 MOV [SX],
SEG~SAVE,
CS
-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.
tNMI
is not an instruction, it is included in table 1-16 only for timing information.
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