L/s}jump c/{l/s}jump nc, sr, L/s}jump e/{l/s}jump ne, src, {l/s}jump s, src -12, Maxq family user’s guide – Maxim Integrated MAXQ Family User Manual
Page 189
18-12
MAXQ Family User’s Guide
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 docu-
mented in the JUMP src op code. Special src restrictions apply to JUMP E and JUMP NE.
Status Flags:
None
JUMP C
C=1: IP
← IP + src (relative) -or- src (absolute)
Operation:
C=0: IP
← IP + 1
Encoding:
15
0
Example(s):
JUMP C, label1
; C=0, branch not taken
JUMP NC
C=0: IP
← IP + src (relative) -or- src (absolute)
Operation:
C=1: IP
← IP +1
Encoding: 15
0
Example(s):
JUMP NC, label1
; C=0, branch taken
JUMP Z
Z=1: IP
← IP + src
Operation:
Z=0: IP
← IP + 1
Encoding: 15
0
Example(s):
JUMP Z, label1
; Z=1, branch taken
f010
1100
ssss
ssss
f110
1100
ssss
ssss
f001
1100
ssss
ssss
{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
Maxim Integrated