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微機(jī)原理與接口技術(shù)實(shí)驗(yàn)報(bào)告(編輯修改稿)

2024-08-30 12:27 本頁(yè)面
 

【文章內(nèi)容簡(jiǎn)介】 65H, AF=1,CF=1AAA 。AH=1EH, AL=0BH, AF=1,CF=1RETSTART ENDPCODE ENDSEND START——運(yùn)行結(jié)果:各寄存器及內(nèi)存數(shù)據(jù)如上。2.加、減法程序設(shè)計(jì)⑴要求試設(shè)計(jì)、編寫程序,計(jì)算(UP1)+(UP2)(UP3),結(jié)果存放在DX中。如25+4819=?其中UPUPUP3的內(nèi)容均為二位十進(jìn)制數(shù),并以非壓縮BCD碼格式存入存儲(chǔ)器:(UP1)= 0205H, (UP2)= 0408H, (UP3)= 0109HUP1 = 2050H, UP2 = 2150H, UP3 =2250H源程序DATA SEGMENT PARA PUBLIC ‘DATA’DATA ENDSSTACK SEGMENT PARA STACK ‘STACK’DB 512 DUP (?)STACK ENDSCODE SEGMENT PARA PUBLIC ‘CODE’ASSUME CS:CODE,DS:DATA,ES:DATA,SS:STACKSTART PROC FARPUSH DSMOV AX,0PUSH AXMOV AX,DATAMOV DS,AXMOV ES,AX MOV AX,0000MOV DX,0000MOV SI,2050HMOV DI,2150HMOV BP,2250HMOV WORD PTR[SI],0205HMOV WORD PTR[DI],0408HMOV WORD PTR[BP],0109HMOV AL,[SI] 。送被加數(shù)低8位ADD AL,[DI] 。低8位相加AAA 。加法ASCII調(diào)整MOV DL,AL 。暫存MOV AL,[SI+1] 。送被加數(shù)高8位ADC AL,[DI+1] 。帶進(jìn)位加AAA 。加法ASCII調(diào)整XCHG AL,DL 。AL與DL交換SUB AL,[BP] 。和的低8位減減數(shù)的低8位AAS 。減法ASCII調(diào)整XCHG AL,DL 。AL與DL交換,存低8位結(jié)果SBB AL,[BP+1] 。高8位帶進(jìn)位減AAS 。減法ASCII調(diào)整MOV DH,AL 。存高8位結(jié)果RETSTART ENDPCODE ENDSEND START——運(yùn)行結(jié)果:DX=0504H3.乘法程序設(shè)計(jì)要求:試設(shè)計(jì)、編寫程序,計(jì)算(A)(B)。A、B表示內(nèi)存單元,分別存放著二個(gè)用非壓縮BCD碼表示的十進(jìn)制數(shù)(如356)。內(nèi)存單元(A)=04H,(A+1)=03H,內(nèi)存單元(B)=06H,(B+1)=05H,計(jì)算結(jié)果應(yīng)為非壓縮的BCD碼表示的十進(jìn)制數(shù),存放在以C為首地址的4個(gè)連續(xù)內(nèi)存字節(jié)單元中。設(shè)內(nèi)存單元A=2200H、B=2220H、C=2240H;源程序DATA SEGMENT PARA PUBLIC ‘DATA’DATA ENDSSTACK SEGMENT PARA STACK ‘STACK’DB 512 DUP (?)STACK ENDSCODE SEGMENT PARA PUBLIC ‘CODE’ASSUME CS:CODE,DS:DATA,ES:DATA,SS:STACKSTART PROC FARPUSH DSMOV AX,0PUSH AXMOV AX,DATAMOV DS,AXMOV ES,AX MOV AX,0MOV BX,0MOV DI,223AHMOV SI,2230HMOV AL,04H 。被乘數(shù)低8位送ALMOV BL,06H 。乘數(shù)低8位送BLMUL BL 。相乘,AL=18H,CF=0AAM 。調(diào)整,AH=02H,AL=04HMOV WORD PTR [DI],AX 。存結(jié)果,(DI,DI +1)= 04H,02HMOV AL,03H 。被乘數(shù)高8位送ALMUL BL 。被乘數(shù)高8位乘以乘數(shù)低8位,AL=12H,CF=0AAM 。調(diào)整,AH=01H,AL=08HADD AL,[DI+1] 。部分積相加,AL=0AHAAA 。調(diào)整,AH=02H,AL=00H,AF=1,CF=1MOV WORD PTR [DI+1],AX 。存結(jié)果,(DI +1,DI +2)= 00H,02HMOV AL,04H 。被乘數(shù)低8位送ALMOV BL,05H 。乘數(shù)高8位送BLMUL BL 。相乘,AL=14HAAM 。調(diào)整,AH=02H,AL=00HMOV WORD PTR[SI],AX 。存結(jié)果,(SI,SI +1)= 00H,02HMOV AL, 03H 。被乘數(shù)高8位送ALMUL BL 。被乘數(shù)高8位乘以乘數(shù)高8位,AL=0FHAAM 。調(diào)整,AH=01H,AL=05HADD AL,[SI+1] 。部分積相加,AL=07HAAA 。調(diào)整,AH=01H,AL=07H,AF=0,CF=0MOV WORD PTR [SI+1],AX 。存結(jié)果,(SI+1,SI +2)= 07H,01HMOV AL,[DI] 。AL=04HMOV BP,2240H 。乘積首址2240HMOV [BP],AL 。存積低位,(2240H)=04HMOV AL,[DI+1]ADD AL.[SI+1]AAA 。調(diào)整,AH=01H,AL=00H,AF=0,CF=0MOV [BP+1],AL 。存積低位加1,(2241H)=00HMOV AL,[DI+2] 。AL=02HADC AL,[SI+1] 。AL=09H,AF=0,CF=0AAA 。調(diào)整,AH=01H,AL=09HMOV [BP+2],AL 。存積低位加2,(2242H)=09HMOV AL,0ADC AL,[SI+2] 。AL=01H,AF=0,CF=0AAA 。調(diào)整,AH=01H,AL=01HMOV [BP+3],AL 。存積高位,(2243H)=01HRETSTART ENDPCODE ENDSEND START——運(yùn)行結(jié)果:(2243H)=01H,(2242H)=09H,(2241H)=00H,(2240H)=04H;積=1904H4.除法程序設(shè)計(jì)(選做)⑴要求試設(shè)計(jì)、編寫程序,計(jì)算(A)/(B),A、B表示內(nèi)存單元,數(shù)據(jù)自定。其中除數(shù)(B)是16位十六進(jìn)制數(shù),存放在BX中;被除數(shù)(A)是32位十六進(jìn)制數(shù),高16位存放在DX,低16位存放在AX中;結(jié)果為32位十六進(jìn)制數(shù)的商存放在BX:AX中;16位十六進(jìn)制余數(shù)存放在DX中。設(shè)置數(shù)據(jù)時(shí)如果除數(shù)等于零或者商大于16位,則應(yīng)考慮溢出處理。源程序(避免溢出的除法程序)STACK SEGMENT PARA STACK 39。STACK39。 DW 32 DUP(0)STACK ENDSDATA SEGMENT PARA 39。DATA39。DATA ENDSCODE SEGMENT PARA 39。CODE39。 ASSUME CS:CODE,DS:DATA,SS:STACKDIVUO PROC F
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