微機課程設(shè)計--計算器-文庫吧
2025-01-01 15:32 本頁面
【正文】 KKEY_F: MOV AL,0F7H OUT 60H,AL IN AL,62H TEST AL,40H JNZ KEY_0 CALL KEYF JMP STTKKEY_0: TEST AL,20H JNZ KEY_01 CALL KEY0KEY_01: JMP STTK； ；按鍵5處理子程序KEY5: CALL LP1 ；低4位字節(jié)前移 MOV AL,05H MOV [DI+4],AL LEA BX,TABL ；查表取出要顯示數(shù)字的數(shù)碼管段碼 XLAT TABL MOV [SI+4],AL CALL DISP ；顯示 RET ；返回；KEYB: CALL LP1 ；按鍵B處理子程序 MOV AL,0BH MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET；KEYA: CALL LP1 ；按鍵A處理子程序 MOV AL,0AH MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET；KEY3: CALL LP1 ；按鍵3處理子程序 MOV AL,03H MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET；KEY7: CALL LP1 ；按鍵7處理子程序 MOV AL,07H MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET；KEYC: CALL LP1 ；按鍵C處理子程序 MOV AL,0CH MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET；KEYF: CALL LP1 ；按鍵F處理子程序 MOV AL,0FH MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET；KEY0: CALL LP1 ；按鍵0處理子程序 MOV AL,00H MOV [DI+4],AL LEA BX,TABL XLAT TABL MOV [SI+4],AL CALL DISP RET ；LP1: MOV CX,0004H ；數(shù)據(jù)移位保存子程序（前移四位） MOV SI,OFFSET VAR2 MOV DI,OFFSET VAR3LP2: MOV AL,[SI+3] MOV [SI+4],AL MOV AL,[DI+3] MOV [DI+4],AL DEC SI DEC DI LOOP LP2 RET；DISP: MOV SI,OFFSET VAR1 ；顯示子程序 MOV DI,OFFSET VAR2 MOV CX,0004HDIR: MOV AL,[SI] OUT 60H,AL MOV AL,[DI] OUT 61H,AL CALL TIME INC SI INC DI LOOP DIR RET；TIME: PUSH AX ；延時程序 PUSH CX MOV CX,0002HTIME1: MOV AX,0300HTIME2: DEC AX
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鄂ICP備17016276號-1