燕山大學(xué)微機(jī)原理項(xiàng)目匯報(bào)(編輯修改稿)
2024-10-17 12:22 本頁面
【文章內(nèi)容簡介】 out dx,al mov dx,0f000h mov al,11111101b 。7 行 out dx,al call delay mov dx,0f001h mov al,10000001b 。列 out dx,al mov dx,0f000h mov al,11111110b 。8 行 out dx,al jmp guz next1: dec cx jz next12 inc word ptr number[2] 。故障次數(shù)記錄 next12: mov dx,0f001h mov al,00000000b 。列 使點(diǎn)陣不亮 out dx,al mov dx,0f000h 8 mov al,11111111b 。1 行 out dx,al call delay mov dx,0e100h 。8155 方式控制口 mov al,03h 。8155A 口輸出， B 口輸出 out dx,al zi2: inc word ptr number[0] 。正常工件次數(shù) call jishu jmp A jishu proc 。計(jì)數(shù)子程序，二進(jìn)制變十進(jìn)制，得到要顯示的代碼表 push ax push si push dx push bx push di mov ax,number[0] 。低四位數(shù)存入 bvar mov si,0 mov dx,0 mov bx,10 again: mov dx,0 div bx 。存余數(shù) mov bvar[0+si],dl 。無符號(hào)數(shù)除法，低位存商，高位存余 inc si cmp ax,0 jnz again mov ax,number[2] 。高四位數(shù)存入 bvar mov si,0 mov dx,0 mov bx,10 again1: mov dx,0 div bx 。存余數(shù) mov bvar[4+si],dl inc si cmp ax,0 jnz again1 9 lea bx,LED 。低四位數(shù)每位對(duì)應(yīng)段碼存入 bvar1 mov cx,4 mov di,0 again2: mov al,bvar[0+di] xlat 。換碼為顯示代碼： AL=DS:[BX+AL] mov bvar1[0+di],al inc di loop again2 。循環(huán) 4 次 z1: cmp byte ptr bvar1[di1],3fh jnz next2 。最高位 和 0 比較，是 0 就不顯示 mov byte ptr bvar1[di1],0 dec di jmp z1 next2: lea bx,LED 。高四位數(shù)每位對(duì)應(yīng)段碼存入 bvar1 mov cx,4 mov di,0 again3: mov al,bvar[4+di] xlat mov bvar1[4+di],al inc di loop again3 z
環(huán)評(píng)公示相關(guān)推薦
鄂ICP備17016276號(hào)-1