Maxim-integrated DS4830 Optical Microcontroller Manual de usuario descargar pdf (Pagina 209)

DS4830 User’s Guide

209

RET C / RET NC Conditional Return on Status Flag

RET Z / RET NZ

RET S

Description: Performs conditional return (RET) based upon the state of a specific processor status flag. RET

C returns if the Carry flag is set while RET NC returns if the Carry flag is clear. RET Z returns if

the Zero flag is set while RET NZ returns if the Zero flag is clear. RET S returns if the Sign flag is

set. See RET for additional information on the return operation.

Status Flags: None

RET C

Operation: C=1: IP  @SP--

C=0: IP  IP + 1

Encoding: 15 0

1010

1100

0000

1101

Example(s): RET C ; C=1, return (RET) is performed.

RET NC

Operation: C=0: IP  @SP--

C=1: IP  IP +1

Encoding: 15 0

1110

1100

0000

1101

Example(s): RET NC ; C=1, return (RET) does not occur

RET Z

Operation: Z=1: IP  @SP--

Z=0: IP  IP + 1

Encoding: 15 0

1001

1100

0000

1101

Example(s): RET Z ; Z=0, return (RET) does not occur

RET NZ

Operation: Z=0: IP  @SP--

Z=1: IP  IP + 1

Encoding: 15 0

1101

1100

0000

1101

Example(s): RET NZ ; Z=0, return (RET) is performed

RET S

Operation: S=1: IP  @SP--

S=0: IP  IP + 1

Encoding: 15 0

1100

0000

1101

Example(s): RET S ; S=0, return (RET) does not occur

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Maxim-integrated DS4830 Optical Microcontroller Manual de usuario Pagina 209

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