微型計(jì)算機(jī)原理實(shí)驗(yàn)

實(shí)驗(yàn)一：輸出字符‘A'的源程序如下：PROGSEGMENTASSUMECS:PROGSTART:MOVDL,'A'MOVAH,2INT21HMOVAH,4CHINT21HPROGENDSENDSTART實(shí)驗(yàn)二：把BX中的二進(jìn)制數(shù)轉(zhuǎn)換成十進(jìn)制數(shù)，在屏幕上顯示出來，只考慮無符號(hào)數(shù)。程序如下：CODESEGMENTASSUMECS:CODESTART:MOVBX,0FFFHMOVCX,10000CALLDEC_DIVMOVCX,1000CALLDEC_DIVMOVCX,100CALLDEC_DIVMOVCX,10CALLDEC_DIVMOVCX,1CALLDEC_DIVMOVAH,4CHINT21HDEC_DIVPROCNEARMOVAX,BXMOVDX,0DIVCXMOVBX,DX

MOVDL,ALADDDL,30HMOVAH,2INT21HRETDEC_DIVENDPCODEENDSENDSTART把BX中的帶符號(hào)數(shù)轉(zhuǎn)換成十進(jìn)制數(shù)，在屏幕上顯示出來。程序如下CODESEGMENTASSUMECS:CODEBX,8001START:MOVHMOVAX,8000HANDAX,BXJNZMINUSJMPDISPMINUS:MOVDL,'-'MOVAH,221INTHBNEGXJMPDISPDISP:MOVCX,10000CALLDEC_DIVMOVCX,1000CALLDEC_DIVMOVCX,100CALLDEC_DIVMOVCX,10CALLDEC_DIVMOVCX,1CALLDEC_DIVMOVAH,4CH21INTHDEC_DIVPROCNEARMOVAX,BXMOVDX,0DIVCXMOVBX,DXMOVDL,ALADDDL,30HMOVAH,221INTHRETDEC_DIVENDPCODEENDSENDSTART求一個(gè)數(shù)據(jù)塊（由10個(gè)單字節(jié)的無符號(hào)數(shù)組成）中的最大元素并將結(jié)果在屏幕上顯示出來，程序如下：DATASEGMENTBLOCK 1,0,5,7,10,30,100,127,90,80DBRESULT ?DBDATAENDSCODESEGMENTCS:CODE,DS:DATASSUMEABEGINPROCFARMOVAX,DATAMOVDS,AXMOVCX,9LEASI,BLOCKMOVAL,[SI]X1:INCSICMPAL,[SI]JAEX2MOVAL,[SI]X2:LOOPX1MOVRESULT,ALMOVAH,0MOVBX,AXCALLXIANSHIMOVAH,4CHINT21HBEGINENDPXIANSHIPROCNEARMOVAL,80HANDAL,BLJNZMINUSJMPDISPMINUS:MOVDL,'-'MOVAH,2INT21HBNEGLJMPDISPDISP:MOVCX,100CALLDEC_DIV

MOVCX,10CALLDEC_DIVMOVCX,1CALLDEC_DIVMOVAH,4CHINT21HXIANSHIENDPDEC_DIVPROCNEARMOVAX,BXMOVDL,0DIVCLMOVBL,AHBH,0MOVDL,ALDL,30HMOVADDAH,221HMOVINTRETDEC_DIVENDPCODEENDSENDBEGIN求一個(gè)數(shù)據(jù)塊（由20個(gè)單字節(jié)的帶符號(hào)數(shù)組成）中的正數(shù)和（W字）和負(fù)數(shù)和（W字），并在屏幕上用十進(jìn)制的形式顯示出兩個(gè)和。程序如下：DATASEGMENTBLOCKDW-100,100,200,-200,5,6,7,8,9,10DW11,12,13,14,15,50,-50,150,-150,-200POSITDWNEGATDWST1DB'Thesumofallthepositivenumbers:$'ST2DB'Thesumofthenegativenumbers:$'MOVAX,DATAMOVDS,AXMOVBX,OFFSETBLOCKMOVSI,0MOVDI,0MOVCX,20

X1:MOVAX,[BX]CMPAX,0JGEX3ADDDI,AXJMPX2X3:ADDSI,AXX2:ADDBX,2LOOPX1MOVPOSIT,SIMOVNEGAT,DIMOBX,SIVDX,OFFSETST1MOAH,9VMOVINT21HCALLXIANSHIMOVDL,0DHAH,MOV2INT21HMOVDL,0AHAH,MOV2INT21HMOVBX,NEGATNEGBXANDBX,7FFFHDX,OFFSETMOVST2AH,MOV9INT21HDL,'MOV-'AH,MOV2INT21HCALLXIANSHIMOVAH,4CHINT21HSTARTENDPXIANSHIPROCNEARMOVCX,100CALLDEC_DIVMOVCX,10CALLDEC_DIVCX,MOV1CALLDEC_DIVRETXIANSHIENDPDEC_DIVPROCNEAR

MOVAX,BXDX,MOV0DIVCXMOVBX,DXMOVDL,ALADDDL,30HAH,MOV2INT21HRETDEC_DIVENDPCODEENDSENDSTART將寄存器BX中的二進(jìn)制數(shù)轉(zhuǎn)換成十六進(jìn)制數(shù)并在屏幕上顯示出來程序如下：CODESEGMENTCS:CODASSUME EBINHEXPROC FARMOVMOVROTATE:MOVROLMOVANDADDCMPJLADDOUTPUT:MOVINTDECJNEMOVMOVINTMOVCH,4BX,1000CL,4BX,CLDL,BLDL,0FHDL,30HDL,3AHOUTPUTDL,7AH,221HCHROTATE

DL,'H'AH,221HAH,4CHINT21HBINHEXENDPCODEENDSENDBINHEX

實(shí)驗(yàn)三：1.從鍵盤上輸入一個(gè)十進(jìn)制數(shù)（o?65535）,轉(zhuǎn)換成二進(jìn)制數(shù)并放入寄存器BX中，其程序框圖如下：程序如下：CODESEGMENTASSUMECS:CODESTARTPROCCALLDECBINCALLXIANSHIMOVAH,4CHINT21HSTARTENDPNEADECBINPROCRMOVCX,1oMOVBX,oLOP1:MOVAH,1INT21HCMPAL,3oHEXIJLTCMPAL,39HJGEXITSUBAL,3oHMOVAH,ooHXCHGAX,BXMULCXADDBX,AXJMPLOP1EXIT:RETDECBINENDPNEARXIANSHIPROCNEARLP1:MOVCX,10000CALLDEC_DIVMOVCX,1000CALLDEC_DIVMOVCX,100CALLDEC_DIVMOVCX,10CALLDEC_DIVMOVCX,1CALLDEC_DIVRETXIANSHIENDPDEC_DIVPROCNEARMOVAX,BXMOVDX,0DIVCXMOVBX,DXMOVDL,ALADDDL,30HMOVAH,2INT21HRETDEC_DIVENDPCODEENDSENDSTART2.從鍵盤上輸入0?65535范圍的一個(gè)十進(jìn)制數(shù)，在屏幕上顯示出相應(yīng)的十六進(jìn)制數(shù)。程序如下：CODESEGMENTASSUMECS:CODESTARTPROCCALLDECBINMOVCH,4CALLROTATEMOVAH,4CHINT21HSTARTENDPNEADECBINPROCRMOVCX,10MOVBX,0LOP1:MOVAH,1INT21H

CMPAL,30HEXIJLTCMPAL,39HJGEXITSUBAL,30HMOVAH,00HXCHGAX,BXMULCXADDBX,AXJMPLOP1EXIT:RETDECBINENDPROTATEPROCLOP2:MOVCL,4ROLBX,CLMOVDL,BLANDDL,0FHADDDL,30HCMPDL,3AHJLOUTPUTADDDL,7AHOUTPUT:MOV2INT21HCDECHJNELOP2MOVDL,'H'MOVAH,2INT21HMOVAH,4CHINT21HROTATEENDPCODEENDSENDSTART實(shí)驗(yàn)四：1在內(nèi)存中存有一字 0為結(jié)尾，程序開始輸出‘hello'然后符串，以 等待從鍵盤輸入一字符，再改字符串中尋找該字符，若找yes；若找不到，輸出到，輸出 no，然后再輸入下一字符。程序如下：DATSEGMEANT

'HELLO',0DH,0STR1DBAH,'$'STR2DB20H,'YES',0DH,0AH,'$'20H,'NO',0DH,0STR3DBAH,'$'STR4DB'123045ABa=!?',00HDATAENDSCODSEGMEENTASSUMCS:CODE,DS:DEATASTARTPROCFARMOVAX,DATAMOVDS,AXDX,OFFSETMOVSTR1MOVAH,9INT21HLOOP1:MOVINTMOVGON:MOVCMPJZINCCMPJNZMOVLOOP1:MOVINTMOVGON:MOVCMPJZINCCMPJNZMOVGO:MOVINTJMPNO:MOVJMPSTARTENDPCODEENDSAH,121HBX,OFFSETSTR4AH,[BX]AH,0NOBXAH,ALGONDX,OFFSETSTR2AH,921HLOOP1DX,OFFSETSTR3GOENDSTART2.1

出循環(huán)，是系統(tǒng)返

回DOS。已知‘ESC鍵

的鍵值是2.實(shí)驗(yàn)內(nèi)容t的程序是個(gè)無限循環(huán)程序，若按2.1

出循環(huán)，是系統(tǒng)返

回DOS。已知‘ESC鍵

的鍵值是重新匯編、鏈接和運(yùn)行。程序如下：SEGMEDATANTSTR1DB'HELLO',0DH,0AH,'$'STR2DB20H,'YES',0DH,0AH,'$'STR3DB20H,'NO',0DH,0AH,'$'STR4DB'123045ABa=!?',00HDATAENDSCODSEGMEENTASSUMECS:CODE,DS:DA