微機(jī)實驗原理四微型計算機(jī)與接口技術(shù)級黃昳專業(yè)通信工程

--PAGE10一、二、 CS IN0/0809 2、實驗電路原理圖如圖1.通過實驗臺左下角電位器RW1輸出0~5V直流電壓送入ADC0809通道0（IN0debugA/D轉(zhuǎn)換器，輸入命令 轉(zhuǎn)換結(jié)果 CS/0832 用萬用表測量WR2和XFER在實驗系統(tǒng)上如何聯(lián)系的？性輸出端Ua及雙極性輸出端Ub的電壓，驗證數(shù)字與電壓之間的線性關(guān)系。3.編程產(chǎn)生以下波形(從Ub輸出，用示波器觀察（1）鋸齒波（2）2DAC0832制改變輸出脈沖的電平及維持時間，達(dá)到使電機(jī)加速，之目的。2個（80H和FFH，通過不同的延遲時間達(dá)到改變小電機(jī)轉(zhuǎn)速的目的。三、②IN0③一次A/D 鋸齒波流程 正弦波流程給兩段延遲系數(shù)都為0400h，來得到占空比接近于1的脈沖。DATASSEGMENT PORT_ADCEQU298HSPACEDB13,'$'??DATASENDS?STACKSSEGMENT DB256dup(?) EQUSIZESTASTACKSENDSCODESASSUMEMAINPROC MOVDS,AXMOVSS,AXMOV PUSHPUSH MOV ;指定中斷號，0BH對應(yīng)MOVAH,35H INT21HMOV MOV POPBXPOPPUSHMOVAX,SEGMOVDS,AX MOVDX,OFFSETINTP;中斷服務(wù)程序偏移量送MOV MOVAH INT21HPOPDSINAL,21HMOV ANDAL, OUT21H,AL MOVOUT ;啟動MOVCX,0FFFFHLOOP$MOVAX,INT_SEG MOVDS,AXMOVAL,0BHMOVAH,25HINTMOVMOVINT MAINENDPINTPMOVIN CALLDISY;顯OUT MOV INTPENDPDISYPROCMOVAH,0MOVSHL SHR ;AL中低PUSHAXCMP JBDISP1JMPDISP2 ADD MOV INT21HSUBADD MOV INT21HPOPAXCMPAL,10JBDISP3JMPDISP4ADD MOV INT21HSUBAL,10MOVDL,ALMOVAH,2INT21HMOV INT21HLEADX,SPACE MOVAH,9DISYENDPCODESENDSENDDATADATA_SINDB80H,97H,0B1H,0C7H,0DBH,0EBH,0F6H,0FDHDB80H,69H,4FH,39H,25H,15H,0AH,03HDBDATAENDS

MOVDS,AXMOVCX,16LEAMOVDX,290HMOVAL,[SI]OUTDX,ALINCSIMOVAH,0BHCMPAL,00HJZEXIT

JMPLINT21HCODEENDDATADATAENDSMOCDS,AXMOVBL,00HMOVAL,BLOUTDX,ALINCBLINT21HJZEXITINT21HCODEENDDATASSEGMENTPORT_DACEQU290H DB32DATA_SINDB80h,96h,0aeh,0c5h,0d8h,0e9h,0f5h,0fdh DB0ffh,0fdh,0f5h,0e9h,0d8h,0c5h,0aeh,96hDB00h,04h,09h,15h,25h,38h,4eh,66hDATA_JUCHIDB0H,1H,2H,3H,4H,5H,6H,7H;鋸齒波DB8H,9H,0AH,0BH,0CH,0DH,0EH,0FHDB10H,0FH,0EH,0DH,0CH,0BH,0AH,9HDB8H,7H,6H,5H,4H,3H,2H,1HDATASENDS DB256dup(?) EQUSIZESTASTACKSENDSMAINPROCFARMOVAX,DATASMOVDS,AXMOVSS,AXMOVSP,TOP MOVDX,PORT_DACMOVLEASI,DATA_JUCHIMOVCL,3SHLAL,CLOUTDX,AL INCSIDECCMPBH,0 JZINIT_LOMOVAH,1 INT16HJZMOVAH,4CH INT21HMAINENDPCODESENDDATADATAENDSMOVDS,AX

MOVMOVAL,80HOUTDX,ALMOVAH,0BHINT21HCMPAL,00HJZEXITINAL,DXMOVCX,00HJZL1ADDJZL2ADDJZL3ADDJZL4ADDJZL5ADDCX,0400HMOVAL,80HOUTDXALCALLDELAYLOOPLOWMOVAL,0FFHMOVCX,0400HOUTDX,ALLOOPHIGHJMPLINT21HCODEEND電機(jī)的轉(zhuǎn)速