8086-2 datasheet(29/30 Pages) INTEL

29 / 30 page

8086

Table 2. Instruction Set Summary

(Continued)

Mnemonic and

Instruction Code

Description

JMP

e Unconditional Jump:

76543210

Direct within Segment

11101001

disp-low

disp-high

Direct within Segment-Short

11101011

disp

Indirect within Segment

1 1 1 1 1 1 1 1

mod 1 0 0 r/m

Direct Intersegment

11101010

offset-low

offset-high

seg-low

seg-high

Indirect Intersegment

1 1 1 1 1 1 1 1

mod 1 0 1 r/m

RET

e Return from CALL:

Within Segment

11000011

Within Seg Adding Immed to SP

11000010

data-low

data-high

Intersegment

11001011

Intersegment Adding Immediate to SP

11001010

data-low

data-high

JE/JZ

e Jump on Equal/Zero

01110100

disp

JL/JNGE

e Jump on Less/Not Greater

01111100

disp

or Equal

JLE/JNG

e Jump on Less or Equal/

01111110

disp

Not Greater

JB/JNAE

e Jump on Below/Not Above

01110010

disp

or Equal

JBE/JNA

e Jump on Below or Equal/

01110110

disp

Not Above

JP/JPE

e Jump on Parity/Parity Even

01111010

disp

e Jump on Overflow

01110000

disp

e Jump on Sign

01111000

disp

JNE/JNZ

e Jump on Not Equal/Not Zero

01110101

disp

JNL/JGE

e Jump on Not Less/Greater

01111101

disp

or Equal

JNLE/JG

e Jump on Not Less or Equal/

01111111

disp

Greater

JNB/JAE

e Jump on Not Below/Above

01110011

disp

or Equal

JNBE/JA

e Jump on Not Below or

01110111

disp

Equal/Above

JNP/JPO

e Jump on Not Par/Par Odd

01111011

disp

JNO

e Jump on Not Overflow

01110001

disp

JNS

e Jump on Not Sign

01111001

disp

LOOP

e Loop CX Times

11100010

disp

LOOPZ/LOOPE

e Loop While Zero/Equal

11100001

disp

LOOPNZ/LOOPNE

e Loop While Not

11100000

disp

Zero/Equal

JCXZ

e Jump on CX Zero

11100011

disp

INT

e Interrupt

Type Specified

11001101

type

Type 3

11001100

INTO

e Interrupt on Overflow

11001110

IRET

e Interrupt Return

11001111

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