Maxim-integrated DS4830 Optical Microcontroller Manuel d'utilisateur télécharger pdf (Page 199)

DS4830 User’s Guide

199

{L/S} JUMP C / {L/S} JUMP NC, src Conditional {Long/Short} Jump on Status Flag

{L/S} JUMP Z / {L/S} JUMP NZ, src

{L/S} JUMP E / {L/S} JUMP NE, src

{L/S} JUMP S, src

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

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

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

Example(s): JUMP Z, label1 ; Z=1, branch taken

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Maxim-integrated DS4830 Optical Microcontroller Manuel d'utilisateur Page 199