微型計(jì)算機(jī)控制技術(shù)課程設(shè)計(jì)---步進(jìn)電機(jī)角度控制-預(yù)覽頁(yè)
【正文】 KEYABC:CALL TIME MOV DX,0604H IN AL,DX AND AL,60H CMP AL,60H 。檢測(cè) PC6口 JNZ KEY_0 CALL KEYF JMP STTK KEY_0:MOV AL,0FDH 。PC2=0 MOV DX,0604H 4 OUT DX,AL MOV DX,0604H IN AL,DX TEST AL,20H 。檢測(cè) PC6口 JNZ KEY_111 CALL KEYB KEY_111:JMP STTK 。................放鍵測(cè)試 ........................ STTK: CALL DISP MOV AL,00H MOV DX,0604H OUT DX,AL MOV DX,0604H IN AL,DX AND AL,60H CMP AL,60H JNZ STTK JMP STT CODE ENDS END START 任務(wù) 2 實(shí)現(xiàn)： 定義鍵盤按鍵： 5 個(gè)為數(shù)字鍵： 0、 9 ； 3 個(gè)功能鍵：設(shè)置 SET、清零 CLR、開(kāi)始 START；按鍵分布如下表所示： 0 3 6 5 SET 4 START CLR 源程序： STACK SEGMENT STACK DB 100 DUP(?) STACK ENDS DATA SEGMENT VAR1 DB OF7H,0FBH,0FDH,0FEH VAR2 DB 0FCH,0FCH,0FCH,0FCH VAR5 DB 00H,00H,00H,00H,00H,00H TABL DB 0FCH,60H,0DH,0F2H,66H,0B6H,0BEH,0E0H,0FEH,0F6H,0EEH,3EH,9CH,7AH,9EH,8EH TAB_C DW 00H ORG 0100H VAR3 DB 64 DUP(?) ORG 0200H VAR4 DW 64 DUP(?) COUNT DB 00H TABLE DB 08H,18H,10H,30H,20H,60H,40H,48H D_COUNT DB 00H D_TIMES DB 00H DATA ENDS CODE SEGMENT ASSUME CS:CODE,DS:DATA START: MOV AX,DATA MOV DS,AX PUSH DX MOV AL,88H 。掃描 PC0口 MOV DX,0604H OUT DX,AL MOV DX,0604H IN AL,DX TEST AL,20H 。檢測(cè) PC5 JNZ KEY_START CALL KEY6 JMP STTK KEY_START:TEST AL,40H 。檢測(cè) PC5 JNZ KEY_SET CALL KEY0 JMP STTK KEY_SET:TEST AL,40H ?！?. KEYSET: LEA SI,VAR2 LEA DI,VAR3 MOV AL,COUNT CBW 9 ADD DI,AX ADD DI,AX ADD DI,AX ADD DI,AX MOV CX,0004H SET1: MOV AL,[SI] MOV [DI],AL INC DI INC SI LOOP SET1 LEA SI,VAR5 MOV DX,0000H MOV DI,OFFSET VAR4 MOV AL,COUNT CBW ADD DI,AX ADD DI,AX ADD DI,AX ADD DI,AX MOV AL,[SI] MOV [DI],AL MOV AL,[SI+1] MOV BL,64H MUL BL ADD DX,AX MOV AL,[SI+2] MOV CL,0AH MUL BL ADD DX,AX MOV BL,[SI+3] CBW ADD AX,DX MOV [DI+2],AX MOV CX,0004H LEA SI,VAR2 LEA DI,VAR5 SET2: MOV [SI],0FCH MOV [DI],00H INC SI INC DI LOOP SET2 CALL DISP INC COUNT RET 。………………………………… DISP: LEA SI,VAR1 LEA DI,VAR2 MOV CX,0004H DIR: MOV AL,[SI] MOV DX,0604H OUT DX,AL MOV AL,[DI] MOV DX,0602H OUT DX,AL CALL TIME 11 INC SI INC DI LOOP DIR RET
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鄂ICP備17016276號(hào)-1