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-在線瀏覽
2025-03-01 04:52本頁面
【正文】 TEST AL,20H 。檢測(cè) PC6口 JNZ KEY_3 CALL KEY7 JMP STTK KEY_3:MOV AL,0F7H PC3=0 MOV DX,0604H 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 。..................顯示 ........... DISP:PUSH DX PUSH CX MOV SI,OFFSET VAR1 MOV DX,0604H MOV AL,11111110B OUT DX,AL MOV DX,0602H MOV AL,[SI+3] OUT DX,AL DEC SI CALL TIME MOV DX,0604H MOV AL,11111101B OUT DX,AL MOV DX,0602H MOV AL,[SI+3] OUT DX,AL DEC SI CALL TIME MOV DX,0604H MOV AL,11111011B OUT DX,AL MOV DX,0602H MOV AL,[SI+3] OUT DX,AL DEC SI CALL TIME MOV DX,0604H MOV AL,11110111B OUT DX,AL MOV DX,0602H MOV AL,[SI+3] OUT DX,AL DEC SI CALL TIME POP AX POP DX RET 。................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 。.............鍵盤掃描 ................................................. KEYABC:PUSH DX CALL TIME MOV DX,0604H IN AL,DX AND AL,60H CMP AL,60H 。掃描 PC0口 MOV DX,0604H OUT DX,AL MOV DX,0604H IN AL,DX TEST AL,20H 。否則 是按鍵 5 JMP STTK KEY_CLR: TEST AL,40H 。檢測(cè) PC5 JNZ KEY_START CALL KEY6 JMP STTK KEY_START:TEST AL,40H 。檢測(cè) PC5 JNZ KEY_4 CALL KEY3 JMP STTK KEY_4:TEST AL,40H 。檢測(cè) PC5 JNZ KEY_SET CALL KEY0 JMP STTK KEY_SET:TEST AL,40H 。...............……… ........................ KEY0:CALL LP1 MOV AL,00H MOV [DI],AL MOV AL,0FCH MOV [SI],AL CALL DISP RET KEY3: CALL LP1 MOV AL,03H
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