a3-3.asm

汇编语言的设计

STACK SEGMENT STACK
	DW 64 DUP(?)
STACK ENDS

DATA SEGMENT
DATA1 	DB 5 DUP(?)
DATA2 	DB ?
RESULT 	DB 6 DUP(?)
DATA ENDS
	
CODE SEGMENT
	ASSUME CS:CODE,DS:DATA

START:  MOV AX,DATA
	MOV DS,AX
	CALL INIT
	MOV SI,OFFSET DATA2
	MOV BL,[SI]
	AND BL,0FH
	CMP BL,09H
	JNC ERROR
	MOV SI,OFFSET DATA1
	MOV DI,OFFSET RESULT
	MOV CX,0005H
A1:	MOV AL,[SI+04H]
	AND AL,0FH
	CMP AL,09H
	JNC ERROR
	DEC SI
	MUL BL
	AAM
	ADD AL,[DI+05H]
	AAA
	MOV [DI+05H],AL
	DEC DI
	MOV [DI+05H],AH
	LOOP A1
	MOV CX,06H
	MOV SI,OFFSET RESULT
DISPLAY:MOV AH,01H
	MOV AL,[SI]
	ADD AL,30H
	INT 10H
	INC SI
	LOOP DISPLAY
A2:	JMP A2
INIT:	MOV SI,OFFSET RESULT
	MOV CX,0003H
	MOV AX,0000H
A3:	MOV [SI],AX
	INC SI
	INC SI
	LOOP A3
	RET 
ERROR:  MOV AX,0145H
	INT 10H
	JMP A2
CODE 	ENDS
	END	START