微機原理與接口技術(shù) 課程設(shè)計 (文件)
【正文】 ,40H JNZ KEY_71 CALL KEY7 JMP STTK KEY_71:JMP STTK KEY9: CMP BH,00H ；按鍵9處理子程序 JZ KEY9_1 ；未按過符號鍵，不清零 CALL CLEAR ；已按過符號鍵，清零 KEY9_1:CALL LP1 ；低4位字節(jié)前移 MOV AL,6FH ；最低字節(jié)輸入一個數(shù)據(jù) MOV [SI+4],AL MOV AL,09H MOV [DI+4],AL CALL DISP ；顯示 RET ；返回 KEY8: CMP BH,00H ；按鍵8處理子程序 JZ KEY8_1 CALL CLEAR KEY8_1:CALL LP1 MOV AL,7FH MOV [SI+4],AL MOV AL,08H MOV [DI+4],AL CALL DISP RET KEY7: CMP BH,00H ；按鍵7處理子程序 JZ KEY7_1 CALL CLEAR KEY7_1:CALL LP1 MOV AL,07H MOV [SI+4],AL MOV AL,07H MOV [DI+4],AL CALL DISP RET KEY6: CMP BH,00H ；按鍵6處理子程序 JZ KEY6_1 CALL CLEAR KEY6_1:CALL LP1 MOV AL,7DH MOV [SI+4],AL MOV AL,06H MOV [DI+4],AL CALL DISP RET KEY5: CMP BH,00H ；按鍵5處理子程序 JZ KEY5_1 CALL CLEAR KEY5_1:CALL LP1 MOV AL,6DH MOV [SI+4],AL MOV AL,05H MOV [DI+4],AL CALL DISP RET KEY4: CMP BH,00H ；按鍵4處理子程序 JZ KEY4_1 CALL CLEAR KEY4_1:CALL LP1 MOV AL,66H MOV [SI+4],AL MOV AL,04H MOV [DI+4],AL CALL DISP RET KEY3: CMP BH,00H ；按鍵3處理子程序 JZ KEY3_1 CALL CLEAR KEY3_1:CALL LP1 MOV AL,4FH MOV [SI+4],AL MOV AL,03H MOV [DI+4],AL CALL DISP RET KEY2: CMP BH,00H ；按鍵2處理子程序 JZ KEY2_1 CALL CLEAR KEY2_1:CALL LP1 MOV AL,5BH MOV [SI+4],AL MOV AL,02H MOV [DI+4],AL CALL DISP RET KEY1: CMP BH,00H ；按鍵1處理子程序 JZ KEY1_1 CALL CLEAR KEY1_1:CALL LP1 MOV AL,06H MOV [SI+4],AL MOV AL,01H MOV [DI+4],AL CALL DISP RET KEY0: CMP BH,00H ；按鍵0處理子程序 JZ KEY0_1 CALL CLEAR KEY0_1:CALL LP1 MOV AL,3FH MOV [SI+4],AL MOV AL,00H MOV [DI+4],AL CALL DISP RET KEY+: CMP BH,00H ；按鍵+號處理子程序 JNZ KEYA_1 CALL LP3 ；保存輸入的數(shù)據(jù) KEYA_1:MOV BX,0101H ；設(shè)置符號標(biāo)志 RET ；返回 KEY: CMP BH,00H ；按鍵號處理子程序 JNZ KEYB_1 CALL LP3 ；保存輸入的數(shù)據(jù) KEYB_1:MOV BX,0102H ；設(shè)置符號標(biāo)志 RET ；返回 KEY*: CMP BH,00H ；按鍵*號處理子程序 JNZ KEYC_1 CALL LP3 ；保存輸入的數(shù)據(jù) KEYC_1:MOV BX,0103H ；設(shè)置符號標(biāo)志 RET ；返回 KEY/: CMP BH,00H ；按鍵/號處理子程序 JNZ KEYD_1 CALL LP3 ；保存輸入的數(shù)據(jù) KEYD_1:MOV BX,0104H ；設(shè)置符號標(biāo)志 RET ；返回 KEY=: MOV BH,01H ；按鍵=號處理子程序 CMP BL,01H ；是+號？ JZ K1 ；進行加法運算 CMP BL,02H ；是號？ JZ K2 ；進行減法運算 CMP BL,03H ；時*號？ JZ K3 ；進
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