Intel 8086-2, 8086-1 manual

8086

Table 2. Instruction Set Summary (Continued)

Mnemonic and

Description

Instruction Code

JMP e Unconditional Jump:

Direct within Segment

Direct within Segment-Short

Indirect within Segment

Direct Intersegment

Indirect Intersegment

7 6 5 4 3 2 1 0	7 6 5 4 3 2 1 0	7 6 5 4 3 2 1 0
1 1 1 0 1 0 0 1	disp-low	disp-high
1 1 1 0 1 0 1 1	disp
1 1 1 1 1 1 1 1	mod 1 0 0 r/m
1 1 1 0 1 0 1 0	offset-low	offset-high
	seg-low	seg-high
1 1 1 1 1 1 1 1	mod 1 0 1 r/m

RET e Return from CALL:
Within Segment	1 1 0 0 0 0 1 1
Within Seg Adding Immed to SP	1 1 0 0 0 0 1 0	data-low	data-high
Intersegment	1 1 0 0 1 0 1 1
Intersegment Adding Immediate to SP	1 1 0 0 1 0 1 0	data-low	data-high
JE/JZ e Jump on Equal/Zero
	0 1 1 1 0 1 0 0	disp
JL/JNGE e Jump on Less/Not Greater
	0 1 1 1 1 1 0 0	disp
or Equal
JLE/JNG e Jump on Less or Equal/
	0 1 1 1 1 1 1 0	disp
Not Greater
JB/JNAE e Jump on Below/Not Above
	0 1 1 1 0 0 1 0	disp
or Equal
JBE/JNA e Jump on Below or Equal/
	0 1 1 1 0 1 1 0	disp
Not Above
JP/JPE e Jump on Parity/Parity Even	0 1 1 1 1 0 1 0	disp
JO e Jump on Overflow
	0 1 1 1 0 0 0 0	disp
JS e Jump on Sign
	0 1 1 1 1 0 0 0	disp
JNE/JNZ e Jump on Not Equal/Not Zero
	0 1 1 1 0 1 0 1	disp
JNL/JGE e Jump on Not Less/Greater
	0 1 1 1 1 1 0 1	disp
or Equal
JNLE/JG e Jump on Not Less or Equal/
	0 1 1 1 1 1 1 1	disp
Greater
JNB/JAE e Jump on Not Below/Above
	0 1 1 1 0 0 1 1	disp
or Equal
JNBE/JA e Jump on Not Below or
	0 1 1 1 0 1 1 1	disp
Equal/Above
JNP/JPO e Jump on Not Par/Par Odd	0 1 1 1 1 0 1 1	disp
JNO e Jump on Not Overflow
	0 1 1 1 0 0 0 1	disp
JNS e Jump on Not Sign
	0 1 1 1 1 0 0 1	disp
LOOP e Loop CX Times	1 1 1 0 0 0 1 0	disp
LOOPZ/LOOPE e Loop While Zero/Equal
	1 1 1 0 0 0 0 1	disp
LOOPNZ/LOOPNE e Loop While Not
	1 1 1 0 0 0 0 0	disp
Zero/Equal
JCXZ e Jump on CX Zero	1 1 1 0 0 0 1 1	disp

INT e Interrupt

Type Specified

Type 3

INTO e Interrupt on Overflow

IRET e Interrupt Return

1 1 0 0 1 1 0 1 type

1 1 0 0 1 1 0 0

1 1 0 0 1 1 1 0

1 1 0 0 1 1 1 1

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