Maxim Integrated MAXQ622 - Manual (Page 218)

MAXQ612/MAXQ622 User’s Guide
16-8 Maxim Integrated
{L/S} JUMP C/{L/S} JUMP NC, src
{L/S} JUMP Z/{L/S} JUMP NZ, src
{L/S} JUMP E/{L/S} JUMP NE, src
{L/S} JUMP S, src
Conditional {Long/Short} Jump on Status Flag
Description: Performs conditional branching based upon the state of a specific processor status flag . JUMP C
results in a branch if the Carry flag is set while JUMP NC branches if the Carry flag is clear . JUMP
Z results in a branch if the Zero flag is set while JUMP NZ branches if the Zero flag is clear . JUMP E
results in a branch if the Equal flag is set while JUMP NE branches if the Equal flag is clear . JUMP
S results in a branch if the Sign flag is set . Program branches can be relative or absolute depending
upon the src specifier and may be qualified by using the ‘L’ or ‘S’ prefixes as documented in the
JUMP src opcode . Special src restrictions apply to JUMP E and JUMP NE .
Status Flags: None
JUMP C
Operation:
C=1: IP ← IP + src (relative) –or— src (absolute)
C=0: IP ← IP + 1
Encoding: 15 0
f010 1100 ssss ssss
Example(s): JUMP C, label1 ; C=0, branch not taken
JUMP NC
Operation:
C=0: IP ← IP + src (relative) –or— src (absolute)
C=1: IP ← IP +1
Encoding: 15 0
f010 1100 ssss ssss
Example(s): JUMP NC, label1 ; C=0, branch taken
JUMP Z
Operation:
Z=1: IP ← IP + src
Z=0: IP ← IP + 1
Encoding: 15 0
f001 1100 ssss ssss
Example(s): JUMP Z, label1 ; Z=1, branch taken
JUMP NZ
Operation:
Z=0: IP ← IP + src (relative) –or— src (absolute)
Z=1: IP ← IP + 1
Encoding: 15 0
f101 1100 ssss ssss
Example(s): JUMP NZ, label1 ; Z=1, branch not taken