...wd......wd......wd...本科實驗報告實驗名稱：分支和循環實驗課程名稱：CPU與匯編語言和選修實驗實驗時間：2017.10.24任課教師：高平實驗地點：10-102實驗教師：高平實驗類型：█原理驗證□綜合設計□自主創新學生姓名：xxxx組號：學院：信息與電子學院同組伙伴：專業：信號與信息處理成績：實驗目的掌握比擬指令；理解條件轉移和無條件轉移指令的區別；掌握單分支、雙分支、多分支的程序設計方法；掌握循環程序設計方法。實驗內容內容一程序代碼：DATASSEGMENTBUFDB12H,98H,45H,64H,78H,36H,55H,44H,0ABH,0CFHCOUNTEQU$-BUFNUM1DB0NUM2DB0BUF1DB00,00BUF2DB00,00DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVCX,COUNTMOVSI,0MOVDI,0L:MOVAL,BUF[SI]CMPAL,0JGL1INCNUM2CBWADCWORDPTRBUF2[DI],AXJMPL2L1:INCNUM1CBWADCWORDPTRBUF1[DI],AXL2:INCSILOOPLMOVAH,4CHINT21HCODESENDSENDSTART程序運行結果：和個數正數02027負數FF123內容二實驗代碼：DATASSEGMENTBUFDB12H,98H,45H,64H,78H,36H,55H,44H,0ABH,0CFHCOUNTEQU$-BUFMAXDB0MINDB0DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVCX,COUNTMOVSI,0MOVAL,BUF[SI]MOVMAX,ALL:INCSIMOVAL,BUF[SI]CMPAL,MAXJLL1MOVMAX,ALL1:DECCXJNZLMOVCX,COUNTMOVSI,0MOVAL,BUF[SI]MOVMIN,ALM:INCSIMOVAL,BUF[SI]CMPAL,MINJAM1MOVMIN,ALM1:DECCXJNZMMOVAH,4CHINT21HCODESENDSENDSTART程序運行結果：所以可得有符號數的最大值為78H，無符號數的最小值12H。內容三實驗代碼：DATASSEGMENTBUF1DB'CHAR',0DH,0AH,'$'BUF2DB'char',0DH,0AH,'$'DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVAH,1HINT21HCMPAL,39HJLEL1CMPAL,5AHJLEL2LEADX,BUF2MOVAH,09HINT21HJMPLL1:MOVDL,ALMOVAH,2INT21HJMPLL2:LEADX,BUF1MOVAH,09HINT21HJMPLL:MOVAH,4CHINT21HCODESENDSENDSTART代碼運行結果：輸入數字5時輸出5輸入大寫字符Q時輸出CHAR輸入小寫字符q時輸出char內容四實驗代碼：DATASSEGMENTBUFDB12H,98H,0H,64H,51H,46H,62H,0H,0ACH,0AFHCOUNTEQU$-BUFA1DB0A2DB0A3DB0DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVCX,COUNTMOVSI,0L:MOVAL,BUF[SI]CMPAL,0JGEL1INCA2JMPL2L1:CMPAL,0JGL3INCA3