南郵微機(jī)實(shí)驗(yàn)報(bào)告基于中斷的字符串屏幕動(dòng)態(tài)顯示

1、精選優(yōu)質(zhì)文檔-傾情為你奉上精選優(yōu)質(zhì)文檔-傾情為你奉上專心-專注-專業(yè)專心-專注-專業(yè)精選優(yōu)質(zhì)文檔-傾情為你奉上專心-專注-專業(yè)基于中斷的字符串屏幕動(dòng)態(tài)顯示實(shí)驗(yàn)要求利用系統(tǒng)定時(shí)源設(shè)計(jì)1CH中斷程序，要求每隔一定時(shí)間在系統(tǒng)機(jī)屏幕上顯示一行字符串。顯示十行后自動(dòng)結(jié)束，并且在顯示十行過(guò)程中按任意鍵也可結(jié)束。實(shí)驗(yàn)設(shè)備 硬件：PC機(jī)。 軟件：“未來(lái)匯編”匯編語(yǔ)言開(kāi)發(fā)環(huán)境實(shí)驗(yàn)程序FILENAME:634.ASM.486DATA SEGMENT USE16OLD1C DD ?ICOUNT DB 18COUNT DB 10MESSAGE DB 0DH,0AH, BJLS$DATA ENDSCODE SEGMEN

2、T USE16 ASSUME CS:CODE,DS:DATABEG: MOV AX,DATA MOV DS,AX CLI CALL READ1C CALL WRITE1C STISCAN: MOV AH,1 INT 16H JNZ RE CMP COUNT,0 JNZ SCANRE: CALL RESET MOV AH,4CH INT 21HSERVICE PROC PUSHA PUSH DS MOV AX,DATA MOV DS,AX DEC ICOUNT JNZ EXIT MOV ICOUNT,18 MOV AH,09H MOV DX,OFFSET MESSAGE INT 21H DEC

3、COUNTEXIT: POP DS POPA IRETSERVICE ENDPREAD1C PROC MOV AX,351CH INT 21H MOV WORD PTR OLD1C,BX MOV WORD PTR OLD1C+2,ES RETREAD1C ENDPWRITE1C PROCPUSH DSMOV AX,CODEMOV DS,AXMOV DX,OFFSET SERVICEMOV AX,251CHINT 21HPOP DSRETWRITE1C ENDPRESET PROC MOV DX,WORD PTR OLD1C MOV DS,WORD PTR OLD1C+2 MOV AX,251CH INT 21H RETRESET ENDPCODE ENDS END BEG實(shí)驗(yàn)小結(jié) 通過(guò)本次的實(shí)驗(yàn)，我掌握了對(duì)系統(tǒng)定時(shí)源1CH中斷進(jìn)行計(jì)時(shí)實(shí)現(xiàn)長(zhǎng)時(shí)間定時(shí)的方法，又一次復(fù)習(xí)了D