8051 Program - signed 8bit division

; subroutine DIV8

; 8-Bit / 8-Bit to 8-Bit Quotient & Remainder signed Divide

; 2's Complement Format

;

; input: r0 = Dividend X

; r1 = Divisor Y

;

; output: r0 = quotient Q of division Q = X / Y

; r1 = remainder

;

; calls: Cr0, Cr1, Mr0

;

; alters: acc, C, Bits 21H & 22H

DIV8:	anl PSW, #0E7H	;Register Bank 0
	acall Cr0	;2's comp -> Mag/Sign
	acall Cr1	;2's comp -> Mag/Sign
	acall UDIV8
	acall Mr0	;Mag/Sign -> 2's Comp
	ret

Source: Maths Subroutines for the 8051 microcontroller, W.G.Marshall 2002

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Related topics:
8051 Program - unsigned 8bit division   |   8051 Program - signed 16bit division   |   8051 Program - unsigned 16bit division   |   8051 Program - signed 32bit division   |   8051 Program - unsigned 32bit division   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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