Intel 210200-002 manual Accumulator

APPENDIX

BENCHMARK: Bubble Sort

PROCESSOR: iAPX 88

; REG ISTER USAGE:
AX	ACCUMULATOR
BL	EXCHANGE	FLAG (OFF=TRUE, 0= FALSE)
CX	COUNT OF	ELEMENTS
OX	- ACCUMULATOR
SI	INDEX OF	ARRAY

Bytes	Cycles
2	4	;	MOv		BL,OFFH		;EXCHANGE=TRUE
	4
3		A1:	CMP		BL,OFFH		;E XCHANGE =TR UE		?
2	4/16		JNE		A4		;	NO, FINISHED
2	3		XOR		BL,BL		;EXCHANGE=FALSE
4	14		MOv		CX,COUNT		;CX=COUNT=l
1	2		DEC		CX
2	3	;	XOR		SI,SI		;SI,=O
3	17
		A2:	MOv		AX,ARRAY[SI]		;ARRAY(I)
3	18		CMP		AX,ARRAY[SI+2]		;	ARRAY(I+l)	?
2	4/16		JLE		A3		;NO
3	26		XCHG		ARRAY[SI+2] ,AX		;EXCHANGE ELEMENTS
3	18		MOv		ARRAY[SI],AX
2	4	;	MOv		BL,OFFH		;EXCHANGE=TRUE
1	2
		A3:	INC		SI		;SI=SI+2
1	2		INC		SI		;DEC CX &,LOOP IF CX=O
2	5/17		LOOP		A2
2	15	A4:	JMP		Al
			38	bytes	of	code
			17	lines	of	code

18 AFN·01664A