8051 Program - convert ascii decimal to binary

; Description:

; Convert ASCII Value In Acc To Binary. Checks Value To See That It's

; Legal Decimal. If Not, Return CY == 1, Else Return Converted Value

; In Acc, And CY == 0.

;

; Entry Requirements:

; Acc Has Character To Convert From ASCII Decimal To Binary

;

; On Exit:

; Acc Has Binary Value, Or Original Character If Not Legal ASCII Decimal

;

; Affected:

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

;

; Stack:

; 2 Bytes, Not Including Space Used By Called Routines

;

; Comments:

; None

;

UTIL_DECTOBIN:
	call UTIL_VALDCDG	; See If Good Digit
	jc loop1	; If Not, Return CY == 1
	subb a,#'0'	; Make 0..9 Range
	clr c	; CY == 0 Means No Error
loop1:	ret	; Return To Caller

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

---

<< Previous :: Up :: Next >>

---

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

---

List of topics: 8051

---