【正文】 DATA ENDSCODE SEGMENT ASSUME CS:CODE,DS:DATASTART:MOV AX,DATA MOV DS,AX PUSH DS MOV AX,0000H MOV DS,AX MOV AX,OFFSET IRQ7 MOV SI,003CH MOV [SI],AX MOV AX,CS MOV SI,003EH MOV [SI],AX POP DS MOV AL,11H OUT 20H,AL MOV AL,08H OUT 21H,AL MOV AL,04H OUT 21H,AL MOV AL,01H OUT 21H,AL MOV AL,7FH OUT 21H,AL MOV CX,0002H A1: CMP CX,0000H JNZ A2 MOV AL,40H OUT 21H,ALA2:STI JMP A1IRQ7:MOV AH,09H MOV DX ,OFFSET TABLE INT 21H MOV AX,0120H INT 10H DEC CX MOV AL,20H OUT 20H,AL IRETCODE ENDS END STARTSTACK SEGMENT STACK DW 64 DUP (?)STACK ENDSDATA SEGMENTTABLE DB 39。DATA ENDSCODE SEGMENT ASSUME CS:CODE,SS:STACKSTART:MOV AX,DATA MOV DS,AXA1: MOV AH,06H LEA BX,DATE1 INT 10H INT 03H CODE ENDS END START（4）STACK SEGMENT STACK DW 64 DUP(?)STACK ENDSDATA SEGMENTDATE1 DB 39。26個字母 MOV BL,41H MOV AH,01H A1: MOV AL,BL INT 10H INC BL DEC CX JNZ A1 MOV CX,09H 。將AL中最大數(shù)存入指定地址 MOV AH,4CH INT 21HCODES ENDSEND STARTSTACK SEGMENT STACK DW 64 DUP(?)STACK ENDSDATA SEGMENT ORG 0300HX DB ? ORG 0305HY DB ?DATA ENDSCODE SEGMENT ASSUME CS:CODE,DS:DATASTART:MOV AX,DATA MOV DS,AX LEA SI,X LEA DI,Y MOV CX,0003H A1:MOV AL,[SI] INC SI AND AL,AL JNS A2 MOV BYTE PTR[DI],0BH INC DI LOOP A1 JMP EXIT A2:JZ A3 MOV BYTE PTR[DI],0AH INC DI LOOP A1 JMP EXIT A3:MOV BYTE PTR[DI],00H INC DI LOOP A1 EXIT:INT 03HCODE ENDS END STARTSTACK SEGMENT STACK DW 64 DUP(?)STACK ENDSDATA SEGMENT ORG 0200HX DB ? ORG 0105HY DB ?DATA ENDSCODE SEGMENT ASSUME CS:CODE,DS:DATASTART:MOV AX,DATA MOV DS,AX LEA SI,X LEA DI,Y MOV CX,0003H A1:MOV AL,[SI] INC SI CMP AL,0C8H JBE A2 MOV BYTE PTR[DI],90H INC DI LOOP A1 JMP EXIT A2:CMP AL,64H JNZ A3 MOV BYTE PTR[DI],50H INC DI LOOP A1 JMP EXIT A3:CMP AL,32H JAE A4 MOV BYTE PTR[DI],00H INC DI A4:LOOP A1 EXIT:INT 03HCODE ENDS END START實驗四：1. 修改實驗程序：（1）STACK SEGMENT STACK DW 64 DUP(?)STACK ENDSCODE SEGMENT ASSUME CS:CODE,SS:STACKSTART: MOV BX,03HA0: CMP BX,00H JZ A3 PUSH BX 。對應(yīng)分數(shù)段人數(shù)加1 INC SI LOOP BBB MOV AH,4CH INT 21HCODES ENDSEND STARTDATAS SEGMENT ORG 0300H LEN DW 0020HNUM (定義20個數(shù)，由于太長，Worl里面顯示成了幾行,換行要在行首加DB)DB 12H,34H,34H,54H,65H,65H,53H,55H,09H,69H,0FCH,65H,0AAH,0FBH,98H,88H, 0C3H,44H,12H,12H,45H,45H,76H,76H,32H,32H,76H,76H,0B7H,86H,21H,09H ORG 0400H MAX DB ? ADDRESS DW ?DATAS ENDSCODES SEGMENT ASSUME CS:CODES,DS:DATASSTART: MOV AX,DATAS MOV DS,AX LEA SI,NUM MOV AL,00H MOV CX,LEN 。CF=0,大于60跳轉(zhuǎn) JMP DONES70: INC BP CMP AL,70 JNB S80 。CF=1，此數(shù)據(jù)為0 JMP DONENEXT: INC BYTE PTR[BP] 。送數(shù)據(jù)地址到DI LEA BP,RESULT MOV SI,00H MOV CX,[di] 。變址加2 DEC CXJNZ BBB 。CF位清零BBB:MOV AX,0550H[SI] 。Q存入3710單元 MOV AH,4CH INT 21H CODES ENDS END STARTDATAS SEGMENT ORG 0550H X DB 65H,67H,87H,19H,32H,54H,76H,98H 。BCD碼調(diào)整 ADD AX,Z 。變址加2 DEC CXJNZ BBB 。CF位清零BBB:MOV AX,0550H[SI] 。INT 03H MOV AH,4CH INT 21HCODES ENDSEND STARTSTACK SEGMENT STACKDW 64 DUP(?)STACK ENDSDATA SEGMENT ORG 0500HDATA1 DB 10H,15H,0FH ORG 0510HJIEGUO DB ?DATA ENDSCODE SEGMENT ASSUME CS:CODE,DS:DATASTART:MOV AX,DATA MOV DS,AX LEA SI,DATA1 LEA DI,JIEGUO MOV CX,0002H MOV AL,[SI] A1:INC SI ADD AL,[SI] LOOP A1 MOV BL,04H MUL BL MOV DL,64H MOV AH,00H DIV DL MOV [DI