JB

JNAE

JUMP ON BELOW

JUMP ON NOT

ABOVE OR EQUAL

JB

JNAE

Operation:

Flags Affected:

if (CF) = 1 then

None

(IP) +- (lP) + disp (sign-extended

 

to 16-bits)

 

Description:

 

JB (Jump on Below)/JNAE (Jump on Not

 

Above or Equal) transfers control to the target

 

operand (IP + displacement) if CF = 1.

 

Encoding:

1011100101 disp

JB/JNAE Operands Clocks Transfers Bytes JB Coding Example

short-label

16 or 4

-

2 JB BELOW

2-88

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Intel 210200-002 manual Jump on below Jump on not Above or Equal, Disp