8051 Program - multiply dptr by 1000

; Description:

; Multiple DPTR By 1000. Return CY == 1 If Overflow

;

; Entry Requirements:

; DPTR Has Value To Multiply By 1000

;

; On Exit:

; DPTR = DPTR * 1000

;

; Affected:

; PSW.CY, DPTR

;

; Stack:

; 2 Bytes, Not Including Space Used By Called Routines

;

; Comments:

; If DPTR Overflows On The First Or Second Multiply, The Third Call

; Will Not Reflect The Overflow. DPTR Should Be Checked Before Entry.

;

UTIL_DPTRX1000:
	call UTIL_DPTRX10	; Multiply By 10
	call UTIL_DPTRX10	; Multiply By 100
	call UTIL_DPTRX10	; Multiply By 1000
	ret	; Return To Caller

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

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Related topics:
8051 Program - multiply dptr by 10   |   8051 Program - multiply dptr by 100   |   8051 Program - call function dptr points to   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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