Maxim-integrated DS4830A Optical Microcontroller Instrukcja Użytkownika Pobierz pdf (Strona 218)

DS4830A User’s Guide

218

POP dst Pop Word from the Stack

Description: Pops a single word from the stack (@SP) to the specified dst and decrements the stack

pointer (SP).

Status Flags: S, Z (if dst = Acc or AP or APC)

C, E (if dst = PSF)

Operation: dst  @ SP--

Encoding: 15 0

1ddd

dddd

0000

1101

Example(s): POP GR ; GR  1234h

POP @DP[0] ; @DP[0]  76h (WBS0=0)

; @DP[0]  0876h (WBS0=1)

Stack Data:

xxxxh

1234h

 SP (initial)

0876h

 SP (after POP GR)

xxxxh

 SP (after POP @DP[0])

xxxxh

POPI dst Pop Word from the Stack Enable Interrupts

Description: Pops a single word from the stack (@SP) to the specified dst and decrements the stack

pointer (SP). Additionally, POPI returns the interrupt logic to a state in which it can

acknowledge additional interrupts.

Status Flags: S, Z (if dst = Acc or AP or APC)

C, E (if dst = PSF)

Operation: dst  @ SP--

INS  0

Encoding: 15 0

1ddd

dddd

1000

1101

Example(s): See POP

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Maxim-integrated DS4830A Optical Microcontroller Instrukcja Użytkownika Strona 218