8051 Program - convert bcd value to hex

; Description:

; Convert BCD Value In Acc To Hex (i.e. 15h -> 00fh)

;

; Entry Requirements:

; Acc Has Value In BCD To Convert

;

; On Exit:

; Acc Has Entry Value Converted To Hex

;

; Affected:

; PSW.CY, PSW.Z, PSW.P, Acc

;

; Stack:

; 2 Bytes, Not Including Space Used By Called Routines

;

; Comments:

; None

;

UTIL_BCDTOBIN:
	push b	; Save B
	push acc	; Save Value
	anl a,#0f0h	; Keep High Bits
	swap a	; Get To Low
	mov b,#10	; 10 Decimal
	mul ab	; Multiply
	mov b,a	; Store In B
	pop acc	; Recover BCD Value
	anl a,#00fh	; Keep Low Nybble
	add a,b	; Add In High
	pop b	; Recover B
	ret	; Return To Caller

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

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Related topics:
8051 Program - convert ascii hex to binary   |   8051 Program - convert ascii decimal to binary   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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