Maxim-integrated DS4830A Optical Microcontroller Manuel d'utilisateur télécharger pdf (Page 210)

DS4830A User’s Guide

210

{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 DS4830A Optical Microcontroller Manuel d'utilisateur Page 210