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微機(jī)原理與應(yīng)用實(shí)驗(yàn)報(bào)告(編輯修改稿)

2024-08-31 00:42 本頁(yè)面
 

【文章內(nèi)容簡(jiǎn)介】 ,0,3,100,51,……,請(qǐng)編一程序,判斷每個(gè)數(shù)是否大于0,等于0,還是小于0,并輸出判斷結(jié)果。即: 1 當(dāng)x0 y = 0 當(dāng)x=0 1 當(dāng)x0①sstack segment dw 32 dup(?)sstack endsdata segment data1 db ‘123439。 data2 db ‘5678’ data3 db 4 dup(?)data endscode segment assume cs:code,ss:sstack,ds:datasta:push ds xor ax,ax push ax mov ax,data mov ds,ax lea si,data1 lea di,data2 lea bx,data3 mov al,[si+3] mov ah,[di+3] and al,0fh and ah,0fh add al,ah or al,30h mov [bx+3],al mov al,[si+2] mov ah,[di+2] and al,0fh and ah,0fh adc al,ah or al,30h mov [bx+2],al mov al,[si+1] mov ah,[di+1] and al,0fh and ah,0fh adc al,ah or al,30h mov [bx+1],al mov al,[si] mov ah,[di] and al,0fh and ah,0fh adc al,ah or al,30h mov [bx],al mov cx,4 mov ah,2ha1:mov dl,[bx] int 21h inc bx loop a1 retcode ends end sta②sstack segment stack 39。stack39。 dw 32 dup(?)sstack endsdata segment buff db 12,23,5,4,0,3,100,51,3,45,9,2 data endscount equ $buffcode segment assume ss:sstack,ds:data,cs:codestart prog far push ds xor ax,ax push ax mov ax,data mov ds,ax lea bx,buff lea si,count mov cx,[si]loop1:mov al,[bx] cmp al,0 jz aa1 and al,80h jz aa2 mov ah,2 mov dl,2dh int 21h aa: inc bx loop loop1 jmp ov aa1:mov ah,2 mov dl,30h int 21h jmp aa aa2:mov ah,2 mov dl,31h int 21h jmp aa ov:retstart endpcode ends end start 實(shí)驗(yàn)三 8254定時(shí)/計(jì)數(shù)器應(yīng)用實(shí)驗(yàn)一、實(shí)驗(yàn)?zāi)康恼莆?254的工作方式及應(yīng)用編程;掌握8254典型應(yīng)用電路的接法。二、實(shí)驗(yàn)設(shè)備 PC機(jī)一臺(tái),TDPIE實(shí)驗(yàn)裝置一套,示波器一臺(tái)。三、實(shí)驗(yàn)內(nèi)容 計(jì)數(shù)應(yīng)用實(shí)驗(yàn)。編寫程序,應(yīng)用8254的計(jì)數(shù)功能,使用單次脈沖模擬計(jì)數(shù),使每當(dāng)按動(dòng)‘KK1 +’5次后,產(chǎn)生一次計(jì)數(shù)中斷,并在屏幕上顯示一個(gè)字符‘M’。 定時(shí)應(yīng)用實(shí)驗(yàn)。編寫程序,應(yīng)用8254的定時(shí)功能,產(chǎn)生一個(gè)1 ms的方波。計(jì)數(shù)應(yīng)用實(shí)驗(yàn)編寫程序,將8254的計(jì)數(shù)器0設(shè)置為方式3,計(jì)數(shù)值為十進(jìn)制數(shù)4,用單次脈沖KK 1+作為CLK0時(shí)鐘,OUT0連接MIR7,每當(dāng)KK1+按動(dòng)5次后產(chǎn)生中斷請(qǐng)求,在屏幕上顯示字符
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