8051 Program - arithmetic shift right dptr

; Description:

; Arithmetic Shift DPTR 1 Bit To Right

;

; Entry Requirements:

; DPTR Has Value To Shift Right

;

; On Exit:

;

; Affected:

;

; Stack:

; X Bytes, Not Including Space Used By Called Routines

;

; Comments:

; None

UTIL_DPTRASR1:
	push acc	; Save Acc
	mov a,dph	; Get High Of DPTR
	mov c,acc.7	; Preserve Sign
	rrc a	; Shift Left
	mov dph,a	; Store Back To DPH
	mov a,dpl	; Get Low Of DPTR
	rrc a	; Shift Left
	mov dpl,a	; Store Back To DPL
	pop acc	; Recover Acc
	ret	; Return To Caller

Source: Assorted Utilities, John C. Wren 11/23/96

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List of topics: 8051

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