本科实验报告-分支与循环实验

...wd......wd......wd...本科实验报告实验名称：分支和循环实验课程名称：CPU与汇编语言和选修实验实验时间：2017.10.24任课教师：高平实验地点：10-102实验教师：高平实验类型：█原理验证□综合设计□自主创新学生姓名：xxxx组号：学院：信息与电子学院同组伙伴：专业：信号与信息处理成绩：实验目的掌握比拟指令；理解条件转移和无条件转移指令的区别；掌握单分支、双分支、多分支的程序设计方法；掌握循环程序设计方法。实验内容内容一程序代码：DATASSEGMENTBUFDB12H,98H,45H,64H,78H,36H,55H,44H,0ABH,0CFHCOUNTEQU$-BUFNUM1DB0NUM2DB0BUF1DB00,00BUF2DB00,00DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVCX,COUNTMOVSI,0MOVDI,0L:MOVAL,BUF[SI]CMPAL,0JGL1INCNUM2CBWADCWORDPTRBUF2[DI],AXJMPL2L1:INCNUM1CBWADCWORDPTRBUF1[DI],AXL2:INCSILOOPLMOVAH,4CHINT21HCODESENDSENDSTART程序运行结果：和个数正数02027负数FF123内容二实验代码：DATASSEGMENTBUFDB12H,98H,45H,64H,78H,36H,55H,44H,0ABH,0CFHCOUNTEQU$-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程序运行结果：所以可得有符号数的最大值为78H，无符号数的最小值12H。内容三实验代码：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代码运行结果：输入数字5时输出5输入大写字符Q时输出CHAR输入小写字符q时输出char内容四实验代码：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