Intel mcs-48 manual Mev A,T Move Timer/Counter Contents to Accumulator

INSTRUCTION SET

Mev A,T Move Timer/Counter Contents to Accumulator

10100100101

The contents of the timer/event-counter register are moved to the accumulator.

(A)--- (T)

Example: Jump to "EXIT" routine when timer reaches '64', that is, when bit 6 set - assuming initialization 64,

TIMCHK: MOV A,T	;MOVE TIMER CONTENTS TO
	;ACC
JB6 EXIT	;JUMP TO 'EXIT'IF ACC BIT
	;6=1

MeV PSW,A Move Accumulator Contents to PSW (Not in 8021, 8022)

11101101111

The contents of the accumulator are moved into the program status word. All condition bits and the stack pointer are affected by this move.

(PSW)--- (A)

Example: Move up stack pointer by two memory locations,

that is, increment the pointer by one.

INCPTR: MOV A,PSW ;MOVE PSW CONTENTS TO ACC

INC A;INCREMENT ACC BY ONE

MOV PSW,A ;MOVE ACC CONTENTS TO PSW

MOV Rr,A Move Accumulator Contents to Register

1101011rrri

The contents of the accumulator are moved to register 'r'.

(Rr)--- (A)	r=0-7
Example: MRA: MOV RO,A	;MOVE CONTENTS OF ACC TO
	;REG 0

MOV Rr,#data Move Immediate Data to Register

This is a 2-cycle instruction. The 8-bit value specified by 'data'is moved to register 'r'.

(Rr).- datar=0-7

Mnemonics copyright Intel Corporation 1976.

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