IBM 5150 Technical Reference

8088 Conditional Transfer Operations
Instruction Condition
Interpretation
JE or JZ ZF = 1
"equal" or "zero"
JLor JNGE (SF xor OF) = 1 "less" or "not greater or equal"
JLE or JNG
((SF xor
OF) or "less or equal" or "not greater"
ZF) = 1
JB or JNAE or JC
CF = 1 "below" or "not above or equal"
JBE or JNA (CF or ZF) = 1
"below or equal" or "not above"
JP or JPE PF = 1 "parity" or "parity even"
JO OF = 1 "overflow"
JS SF = 1 "sign"
JNE orJNZ
ZF = 0
"not equal" or "not zero"
JNLorJGE (SF xor OF) = 0
"not less" or "greater or equal"
JNLE or JG ((SF xor OF) or
"not less or equal" or "greater"
ZF) = 0
JNB or JAE or JNC
CF = 0 "not below" or "above or equal"
JNBE orJA (CForZF) = 0
"not less or equal" or "above"
JNPor JPO
PF = 0 "not parity" or "parity odd"
.INO
OF = 0
"not overflow"
JNS
SF = 0 "not sign"
*" Above" and "below" refer to the relation between two unsigned values, while
"greater" and "less" refer to the relation between two signed values.
INT = Interrupt
Type specified
1 0 0 1
o 1
type
Type 3
11001100
INTO = Interrupt on overflow
11001110
IRET = Interrupt return
11001111
Instruction Set 6-15

IBM 5150 Specifications

General

Brand	IBM
Model	5150
Category	Desktop
Language	English