This repository was archived by the owner on Dec 31, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy path34.html
More file actions
553 lines (465 loc) · 41.1 KB
/
34.html
File metadata and controls
553 lines (465 loc) · 41.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
<!DOCTYPE html><html><head>
<title>34</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="file:///c:\Users\Elaina\.vscode\extensions\shd101wyy.markdown-preview-enhanced-0.6.1\node_modules\@shd101wyy\mume\dependencies\katex\katex.min.css">
<style>
/**
* prism.js Github theme based on GitHub's theme.
* @author Sam Clarke
*/
code[class*="language-"],
pre[class*="language-"] {
color: #333;
background: none;
font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
text-align: left;
white-space: pre;
word-spacing: normal;
word-break: normal;
word-wrap: normal;
line-height: 1.4;
-moz-tab-size: 8;
-o-tab-size: 8;
tab-size: 8;
-webkit-hyphens: none;
-moz-hyphens: none;
-ms-hyphens: none;
hyphens: none;
}
/* Code blocks */
pre[class*="language-"] {
padding: .8em;
overflow: auto;
/* border: 1px solid #ddd; */
border-radius: 3px;
/* background: #fff; */
background: #f5f5f5;
}
/* Inline code */
:not(pre) > code[class*="language-"] {
padding: .1em;
border-radius: .3em;
white-space: normal;
background: #f5f5f5;
}
.token.comment,
.token.blockquote {
color: #969896;
}
.token.cdata {
color: #183691;
}
.token.doctype,
.token.punctuation,
.token.variable,
.token.macro.property {
color: #333;
}
.token.operator,
.token.important,
.token.keyword,
.token.rule,
.token.builtin {
color: #a71d5d;
}
.token.string,
.token.url,
.token.regex,
.token.attr-value {
color: #183691;
}
.token.property,
.token.number,
.token.boolean,
.token.entity,
.token.atrule,
.token.constant,
.token.symbol,
.token.command,
.token.code {
color: #0086b3;
}
.token.tag,
.token.selector,
.token.prolog {
color: #63a35c;
}
.token.function,
.token.namespace,
.token.pseudo-element,
.token.class,
.token.class-name,
.token.pseudo-class,
.token.id,
.token.url-reference .token.variable,
.token.attr-name {
color: #795da3;
}
.token.entity {
cursor: help;
}
.token.title,
.token.title .token.punctuation {
font-weight: bold;
color: #1d3e81;
}
.token.list {
color: #ed6a43;
}
.token.inserted {
background-color: #eaffea;
color: #55a532;
}
.token.deleted {
background-color: #ffecec;
color: #bd2c00;
}
.token.bold {
font-weight: bold;
}
.token.italic {
font-style: italic;
}
/* JSON */
.language-json .token.property {
color: #183691;
}
.language-markup .token.tag .token.punctuation {
color: #333;
}
/* CSS */
code.language-css,
.language-css .token.function {
color: #0086b3;
}
/* YAML */
.language-yaml .token.atrule {
color: #63a35c;
}
code.language-yaml {
color: #183691;
}
/* Ruby */
.language-ruby .token.function {
color: #333;
}
/* Markdown */
.language-markdown .token.url {
color: #795da3;
}
/* Makefile */
.language-makefile .token.symbol {
color: #795da3;
}
.language-makefile .token.variable {
color: #183691;
}
.language-makefile .token.builtin {
color: #0086b3;
}
/* Bash */
.language-bash .token.keyword {
color: #0086b3;
}
/* highlight */
pre[data-line] {
position: relative;
padding: 1em 0 1em 3em;
}
pre[data-line] .line-highlight-wrapper {
position: absolute;
top: 0;
left: 0;
background-color: transparent;
display: block;
width: 100%;
}
pre[data-line] .line-highlight {
position: absolute;
left: 0;
right: 0;
padding: inherit 0;
margin-top: 1em;
background: hsla(24, 20%, 50%,.08);
background: linear-gradient(to right, hsla(24, 20%, 50%,.1) 70%, hsla(24, 20%, 50%,0));
pointer-events: none;
line-height: inherit;
white-space: pre;
}
pre[data-line] .line-highlight:before,
pre[data-line] .line-highlight[data-end]:after {
content: attr(data-start);
position: absolute;
top: .4em;
left: .6em;
min-width: 1em;
padding: 0 .5em;
background-color: hsla(24, 20%, 50%,.4);
color: hsl(24, 20%, 95%);
font: bold 65%/1.5 sans-serif;
text-align: center;
vertical-align: .3em;
border-radius: 999px;
text-shadow: none;
box-shadow: 0 1px white;
}
pre[data-line] .line-highlight[data-end]:after {
content: attr(data-end);
top: auto;
bottom: .4em;
}html body{font-family:"Helvetica Neue",Helvetica,"Segoe UI",Arial,freesans,sans-serif;font-size:16px;line-height:1.6;color:#333;background-color:#fff;overflow:initial;box-sizing:border-box;word-wrap:break-word}html body>:first-child{margin-top:0}html body h1,html body h2,html body h3,html body h4,html body h5,html body h6{line-height:1.2;margin-top:1em;margin-bottom:16px;color:#000}html body h1{font-size:2.25em;font-weight:300;padding-bottom:.3em}html body h2{font-size:1.75em;font-weight:400;padding-bottom:.3em}html body h3{font-size:1.5em;font-weight:500}html body h4{font-size:1.25em;font-weight:600}html body h5{font-size:1.1em;font-weight:600}html body h6{font-size:1em;font-weight:600}html body h1,html body h2,html body h3,html body h4,html body h5{font-weight:600}html body h5{font-size:1em}html body h6{color:#5c5c5c}html body strong{color:#000}html body del{color:#5c5c5c}html body a:not([href]){color:inherit;text-decoration:none}html body a{color:#08c;text-decoration:none}html body a:hover{color:#00a3f5;text-decoration:none}html body img{max-width:100%}html body>p{margin-top:0;margin-bottom:16px;word-wrap:break-word}html body>ul,html body>ol{margin-bottom:16px}html body ul,html body ol{padding-left:2em}html body ul.no-list,html body ol.no-list{padding:0;list-style-type:none}html body ul ul,html body ul ol,html body ol ol,html body ol ul{margin-top:0;margin-bottom:0}html body li{margin-bottom:0}html body li.task-list-item{list-style:none}html body li>p{margin-top:0;margin-bottom:0}html body .task-list-item-checkbox{margin:0 .2em .25em -1.8em;vertical-align:middle}html body .task-list-item-checkbox:hover{cursor:pointer}html body blockquote{margin:16px 0;font-size:inherit;padding:0 15px;color:#5c5c5c;background-color:#f0f0f0;border-left:4px solid #d6d6d6}html body blockquote>:first-child{margin-top:0}html body blockquote>:last-child{margin-bottom:0}html body hr{height:4px;margin:32px 0;background-color:#d6d6d6;border:0 none}html body table{margin:10px 0 15px 0;border-collapse:collapse;border-spacing:0;display:block;width:100%;overflow:auto;word-break:normal;word-break:keep-all}html body table th{font-weight:bold;color:#000}html body table td,html body table th{border:1px solid #d6d6d6;padding:6px 13px}html body dl{padding:0}html body dl dt{padding:0;margin-top:16px;font-size:1em;font-style:italic;font-weight:bold}html body dl dd{padding:0 16px;margin-bottom:16px}html body code{font-family:Menlo,Monaco,Consolas,'Courier New',monospace;font-size:.85em !important;color:#000;background-color:#f0f0f0;border-radius:3px;padding:.2em 0}html body code::before,html body code::after{letter-spacing:-0.2em;content:"\00a0"}html body pre>code{padding:0;margin:0;font-size:.85em !important;word-break:normal;white-space:pre;background:transparent;border:0}html body .highlight{margin-bottom:16px}html body .highlight pre,html body pre{padding:1em;overflow:auto;font-size:.85em !important;line-height:1.45;border:#d6d6d6;border-radius:3px}html body .highlight pre{margin-bottom:0;word-break:normal}html body pre code,html body pre tt{display:inline;max-width:initial;padding:0;margin:0;overflow:initial;line-height:inherit;word-wrap:normal;background-color:transparent;border:0}html body pre code:before,html body pre tt:before,html body pre code:after,html body pre tt:after{content:normal}html body p,html body blockquote,html body ul,html body ol,html body dl,html body pre{margin-top:0;margin-bottom:16px}html body kbd{color:#000;border:1px solid #d6d6d6;border-bottom:2px solid #c7c7c7;padding:2px 4px;background-color:#f0f0f0;border-radius:3px}@media print{html body{background-color:#fff}html body h1,html body h2,html body h3,html body h4,html body h5,html body h6{color:#000;page-break-after:avoid}html body blockquote{color:#5c5c5c}html body pre{page-break-inside:avoid}html body table{display:table}html body img{display:block;max-width:100%;max-height:100%}html body pre,html body code{word-wrap:break-word;white-space:pre}}.markdown-preview{width:100%;height:100%;box-sizing:border-box}.markdown-preview .pagebreak,.markdown-preview .newpage{page-break-before:always}.markdown-preview pre.line-numbers{position:relative;padding-left:3.8em;counter-reset:linenumber}.markdown-preview pre.line-numbers>code{position:relative}.markdown-preview pre.line-numbers .line-numbers-rows{position:absolute;pointer-events:none;top:1em;font-size:100%;left:0;width:3em;letter-spacing:-1px;border-right:1px solid #999;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.markdown-preview pre.line-numbers .line-numbers-rows>span{pointer-events:none;display:block;counter-increment:linenumber}.markdown-preview pre.line-numbers .line-numbers-rows>span:before{content:counter(linenumber);color:#999;display:block;padding-right:.8em;text-align:right}.markdown-preview .mathjax-exps .MathJax_Display{text-align:center !important}.markdown-preview:not([for="preview"]) .code-chunk .btn-group{display:none}.markdown-preview:not([for="preview"]) .code-chunk .status{display:none}.markdown-preview:not([for="preview"]) .code-chunk .output-div{margin-bottom:16px}.scrollbar-style::-webkit-scrollbar{width:8px}.scrollbar-style::-webkit-scrollbar-track{border-radius:10px;background-color:transparent}.scrollbar-style::-webkit-scrollbar-thumb{border-radius:5px;background-color:rgba(150,150,150,0.66);border:4px solid rgba(150,150,150,0.66);background-clip:content-box}html body[for="html-export"]:not([data-presentation-mode]){position:relative;width:100%;height:100%;top:0;left:0;margin:0;padding:0;overflow:auto}html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview{position:relative;top:0}@media screen and (min-width:914px){html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview{padding:2em calc(50% - 457px + 2em)}}@media screen and (max-width:914px){html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview{padding:2em}}@media screen and (max-width:450px){html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview{font-size:14px !important;padding:1em}}@media print{html body[for="html-export"]:not([data-presentation-mode]) #sidebar-toc-btn{display:none}}html body[for="html-export"]:not([data-presentation-mode]) #sidebar-toc-btn{position:fixed;bottom:8px;left:8px;font-size:28px;cursor:pointer;color:inherit;z-index:99;width:32px;text-align:center;opacity:.4}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] #sidebar-toc-btn{opacity:1}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc{position:fixed;top:0;left:0;width:300px;height:100%;padding:32px 0 48px 0;font-size:14px;box-shadow:0 0 4px rgba(150,150,150,0.33);box-sizing:border-box;overflow:auto;background-color:inherit}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc::-webkit-scrollbar{width:8px}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc::-webkit-scrollbar-track{border-radius:10px;background-color:transparent}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc::-webkit-scrollbar-thumb{border-radius:5px;background-color:rgba(150,150,150,0.66);border:4px solid rgba(150,150,150,0.66);background-clip:content-box}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc a{text-decoration:none}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc ul{padding:0 1.6em;margin-top:.8em}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc li{margin-bottom:.8em}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc ul{list-style-type:none}html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview{left:300px;width:calc(100% - 300px);padding:2em calc(50% - 457px - 150px);margin:0;box-sizing:border-box}@media screen and (max-width:1274px){html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview{padding:2em}}@media screen and (max-width:450px){html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview{width:100%}}html body[for="html-export"]:not([data-presentation-mode]):not([html-show-sidebar-toc]) .markdown-preview{left:50%;transform:translateX(-50%)}html body[for="html-export"]:not([data-presentation-mode]):not([html-show-sidebar-toc]) .md-sidebar-toc{display:none}
/* Please visit the URL below for more information: */
/* https://shd101wyy.github.io/markdown-preview-enhanced/#/customize-css */
</style>
</head>
<body for="html-export">
<div class="mume markdown-preview ">
<h1 class="mume-header" id="%E5%AE%9E%E9%AA%8C%E4%BA%8C">实验二</h1>
<h2 class="mume-header" id="12%E5%88%86%E6%94%AF%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1">(1/2)分支程序设计</h2>
<h3 class="mume-header" id="%E4%B8%80-%E5%9F%BA%E7%A1%80%E6%80%A7%E5%AE%9E%E9%AA%8C">一. 基础性实验</h3>
<h4 class="mume-header" id="1-%E5%AE%9E%E9%AA%8C%E7%9B%AE%E7%9A%84">1. 实验目的</h4>
<ol>
<li>掌握多路分支 <code>if...elif...else</code> 程序结构和设计方法.</li>
<li>进一步熟悉 <strong>DEBUG</strong> 的使用方法.</li>
<li>掌握汇编语言程序的编辑,汇编,连接以及调试过程.</li>
</ol>
<h4 class="mume-header" id="2-%E5%AE%9E%E9%AA%8C%E5%86%85%E5%AE%B9">2. 实验内容</h4>
<p>编写程序,将一个包含有 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>20</mn></mrow><annotation encoding="application/x-tex">20</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">20</span></span></span></span> 个数据的数组 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>M</mi></mrow><annotation encoding="application/x-tex">M</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.68333em;vertical-align:0em;"></span><span class="mord mathnormal" style="margin-right:0.10903em;">M</span></span></span></span> 分成两个数组: 正数数组 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>P</mi></mrow><annotation encoding="application/x-tex">P</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.68333em;vertical-align:0em;"></span><span class="mord mathnormal" style="margin-right:0.13889em;">P</span></span></span></span> 和负数数组 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>N</mi><mo separator="true">,</mo></mrow><annotation encoding="application/x-tex">N,</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.8777699999999999em;vertical-align:-0.19444em;"></span><span class="mord mathnormal" style="margin-right:0.10903em;">N</span><span class="mpunct">,</span></span></span></span> 并分别显示这两个数组长度.</p>
<h4 class="mume-header" id="3-%E5%AE%9E%E9%AA%8C%E4%BB%AA%E5%99%A8%E8%AE%BE%E5%A4%87">3. 实验仪器设备</h4>
<ul>
<li>硬件环境: AMD Ryzen 9.</li>
<li>软件环境: Windows XP Pro SP3 (in VMware Workstation 16 Pro).</li>
<li>编辑程序: Visual Studio Code 1.62.3.</li>
<li>调试程序: <code>DEBUG.EXE</code>.</li>
<li>编译程序: <code>MASM.EXE</code>.</li>
<li>连接程序: <code>LINK.EXE</code>.</li>
</ul>
<h4 class="mume-header" id="4-%E5%AE%9E%E9%AA%8C%E6%AD%A5%E9%AA%A4">4. 实验步骤</h4>
<ol>
<li>编译和连接</li>
<li>用单步方式运行程序</li>
</ol>
<pre data-role="codeBlock" data-info="batch" class="language-batch"><span class="token command"><span class="token keyword keyword-debug">debug</span> <span class="token number">3</span><span class="token number">-5</span>.exe</span>
</pre><pre data-role="codeBlock" data-info="py" class="language-python"><span class="token operator">-</span>t
</pre><ol start="3">
<li>检查并记录各寄存器和存储单元内容的变化<br>
<img src="./3/3-1.png" alt></li>
</ol>
<h4 class="mume-header" id="5-%E6%80%9D%E8%80%83%E9%A2%98">5. 思考题</h4>
<h5 class="mume-header" id="1-%E7%A4%BA%E4%BE%8B%E9%A2%98%E4%B8%AD%E6%98%AF%E5%90%A6%E4%B8%80%E5%AE%9A%E8%A6%81%E7%94%A8-cmp-%E6%8C%87%E4%BB%A4%E6%9D%A5%E5%AE%9E%E7%8E%B0%E6%9D%A1%E4%BB%B6%E8%BD%AC%E7%A7%BB-%E5%A6%82%E6%9E%9C%E4%B8%8D%E6%98%AF%E8%AF%B7%E8%AE%BE%E8%AE%A1%E5%87%BA%E6%9B%BF%E4%BB%A3%E7%A8%8B%E5%BA%8F">(1) 示例题中是否一定要用 <code>CMP</code> 指令来实现条件转移? 如果不是,请设计出替代程序.</h5>
<p>否.<br>
使用额外的寄存器和 <code>SUB</code> 替代 <code>CMP</code>.</p>
<pre data-role="codeBlock" data-info="nasm" class="language-nasm">DSEG SEGMENT PARA PUBLIC<span class="token string">'DSEG'</span>
M DB <span class="token number">0</span>,<span class="token number">1</span>,<span class="token number">2</span>,<span class="token number">3</span>,<span class="token number">4</span>,<span class="token number">5</span>,<span class="token number">6</span>,<span class="token number">7</span>,<span class="token number">8</span>,<span class="token number">9</span>,<span class="token number">10</span>,<span class="token number">11</span>,<span class="token number">12</span>,<span class="token number">13</span>,<span class="token number">14</span>,<span class="token number">15</span>,<span class="token number">16</span>,<span class="token number">17</span>,<span class="token number">18</span>,<span class="token number">19</span>
P DB <span class="token number">20</span> DUP(?)
N DB <span class="token number">20</span> DUP(?)
DSEG ENDS
CODE SEGMENT
ASSUME <span class="token register variable">CS</span>:CODE,<span class="token register variable">DS</span>:DSEG
<span class="token label function">START:</span> MOV <span class="token register variable">AX</span>,DSEG
MOV <span class="token register variable">DS</span>,<span class="token register variable">AX</span>
LEA <span class="token register variable">SI</span>,P
LEA <span class="token register variable">DI</span>,N
LEA <span class="token register variable">BX</span>,M
XOR <span class="token register variable">AX</span>,<span class="token register variable">AX</span>
XOR <span class="token register variable">DX</span>,<span class="token register variable">DX</span>
MOV <span class="token register variable">CX</span>,<span class="token number">20</span>
<span class="token label function">L1:</span> MOV <span class="token register variable">AL</span>,<span class="token operator">[</span><span class="token register variable">BX</span><span class="token operator">]</span>
TEST <span class="token register variable">AL</span>,<span class="token number">80H</span>
JZ L2
MOV <span class="token operator">[</span><span class="token register variable">DI</span><span class="token operator">]</span>,<span class="token register variable">AL</span>
INC <span class="token register variable">BX</span>
INC <span class="token register variable">DI</span>
INC <span class="token register variable">DH</span>
JMP L3
<span class="token label function">L2:</span> MOV <span class="token operator">[</span><span class="token register variable">SI</span><span class="token operator">]</span>,<span class="token register variable">AL</span>
INC <span class="token register variable">BX</span>
INC <span class="token register variable">SI</span>
INC <span class="token register variable">DL</span>
<span class="token label function">L3:</span> LOOP L1
MOV <span class="token register variable">CX</span>,<span class="token number">2</span>
<span class="token label function">L5:</span> MOV <span class="token register variable">BL</span>,<span class="token register variable">DL</span>
SHR <span class="token register variable">DL</span>,<span class="token number">1</span>
SHR <span class="token register variable">DL</span>,<span class="token number">1</span>
SHR <span class="token register variable">DL</span>,<span class="token number">1</span>
SHR <span class="token register variable">DL</span>,<span class="token number">1</span>
AND <span class="token register variable">DL</span>,<span class="token number">0FH</span>
MOV <span class="token register variable">AX</span>,<span class="token register variable">DL</span>
SUB <span class="token register variable">AX</span>,<span class="token number">10</span>
JB L4
ADD <span class="token register variable">DL</span>,<span class="token number">7</span>
<span class="token label function">L4:</span> ADD <span class="token register variable">DL</span>,<span class="token number">30H</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
MOV <span class="token register variable">DL</span>,<span class="token register variable">BL</span>
AND <span class="token register variable">DL</span>,<span class="token number">0FH</span>
MOV <span class="token register variable">AX</span>,<span class="token register variable">DL</span>
SUB <span class="token register variable">AX</span>,<span class="token number">10</span>
JB L6
ADD <span class="token register variable">DL</span>,<span class="token number">7</span>
<span class="token label function">L6:</span> ADD <span class="token register variable">DL</span>,<span class="token number">30H</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
MOV <span class="token register variable">DL</span>,<span class="token number">0AH</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
MOV <span class="token register variable">DL</span>,<span class="token number">0DH</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
MOV <span class="token register variable">DL</span>,<span class="token register variable">DH</span>
LOOP L5
MOV <span class="token register variable">AH</span>,<span class="token number">4CH</span>
INT <span class="token number">21H</span>
CODE ENDS
END START
</pre><h3 class="mume-header" id="%E4%BA%8C-%E5%8A%A0%E5%BC%BA%E5%9E%8B%E5%AE%9E%E9%AA%8C">二. 加强型实验</h3>
<h4 class="mume-header" id="1-%E5%AE%9E%E9%AA%8C%E7%9B%AE%E7%9A%84-1">1. 实验目的</h4>
<ol>
<li>进一步掌握多路分支 <code>if elif else</code> 程序结构和设计方法.</li>
<li>进一步熟悉 <strong>DEBUG</strong> 的使用方法.</li>
</ol>
<h4 class="mume-header" id="2-%E5%AE%9E%E9%AA%8C%E5%86%85%E5%AE%B9-1">2. 实验内容</h4>
<p>接收键盘输入字符，判别该字符是否为字母、数字或非字母也非数字类的字符。若是数字，<br>
则显示“DIGIT”；若是字母，显示“LETTER”；若是非数字也非字母类的字符，则显示“OTHER”。</p>
<h4 class="mume-header" id="3-%E5%AE%9E%E9%AA%8C%E4%BB%AA%E5%99%A8%E8%AE%BE%E5%A4%87-1">3. 实验仪器设备</h4>
<ul>
<li>硬件环境: AMD Ryzen 9.</li>
<li>软件环境: Windows XP Pro SP3 (in VMware Workstation 16 Pro).</li>
<li>编辑程序: Visual Studio Code 1.62.3.</li>
<li>调试程序: <code>DEBUG.EXE</code>.</li>
<li>编译程序: <code>MASM.EXE</code>.</li>
<li>连接程序: <code>LINK.EXE</code>.</li>
</ul>
<h4 class="mume-header" id="4-%E5%AE%9E%E9%AA%8C%E6%AD%A5%E9%AA%A4-1">4. 实验步骤</h4>
<ol>
<li>编译和连接</li>
<li>用单步方式运行程序</li>
</ol>
<pre data-role="codeBlock" data-info="batch" class="language-batch"><span class="token command"><span class="token keyword keyword-debug">debug</span> <span class="token number">3</span><span class="token number">-7</span>.exe</span>
</pre><pre data-role="codeBlock" data-info="py" class="language-python"><span class="token operator">-</span>t
</pre><ol start="3">
<li>检查并记录各寄存器和存储单元内容的变化<br>
<img src="./3/3-2.png" alt></li>
</ol>
<h4 class="mume-header" id="5-%E6%80%9D%E8%80%83%E9%A2%98-1">5. 思考题</h4>
<h5 class="mume-header" id="1-%E5%A6%82%E6%9E%9C%E5%AE%9E%E9%AA%8C%E9%A2%98%E4%B8%AD%E8%BF%98%E9%9C%80%E8%BF%9B%E4%B8%80%E6%AD%A5%E5%AF%B9%E5%A4%A7%E5%B0%8F%E5%86%99%E5%AD%97%E6%AF%8D%E8%BF%9B%E8%A1%8C%E5%8C%BA%E5%88%86%E5%A6%82%E4%BD%95%E7%BC%96%E5%86%99%E7%A8%8B%E5%BA%8F">(1) 如果实验题中还需进一步对大小写字母进行区分,如何编写程序?</h5>
<p>由于源程序中对大小写字母输入的处理是分离的,直接增加数据 <code>UPPER</code> <code>LOWER</code>,并更改 <code>LEA</code> 语句即可.</p>
<pre data-role="codeBlock" data-info="nasm" class="language-nasm">DATA SEGMENT
DIGIT DB <span class="token string">"DIGIT"</span>,<span class="token number">0AH</span>,<span class="token number">0DH</span>
UPPER DB <span class="token string">"UPPER"</span>,<span class="token number">0AH</span>,<span class="token number">0DH</span>
LOWER DB <span class="token string">"LOWER"</span>,<span class="token number">0AH</span>,<span class="token number">0DH</span>
OTHER DB <span class="token string">"OTHER"</span>,<span class="token number">0AH</span>,<span class="token number">0DH</span>
DATA ENDS
CODE SEGMENT
ASSUME <span class="token register variable">CS</span>:CODE,<span class="token register variable">DS</span>:DATA
<span class="token label function">START:</span> MOV <span class="token register variable">AX</span>,DATA
MOV <span class="token register variable">DS</span>,<span class="token register variable">AX</span>
MOV <span class="token register variable">AH</span>,<span class="token number">07</span>
INT <span class="token number">21H</span>
CMP <span class="token register variable">AL</span>,<span class="token number">30H</span>
JB AA1
CMP <span class="token register variable">AL</span>,<span class="token number">39H</span>
JA AA1
MOV <span class="token register variable">CX</span>,<span class="token number">7</span>
LEA <span class="token register variable">SI</span>,DIGIT
<span class="token label function">AA0:</span> MOV <span class="token register variable">DL</span>,<span class="token operator">[</span><span class="token register variable">SI</span><span class="token operator">]</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
INC <span class="token register variable">SI</span>
LOOP AA0
JMP BB
<span class="token label function">AA1:</span> CMP <span class="token register variable">AL</span>,<span class="token number">41H</span>
JB AA3
CMP <span class="token register variable">AL</span>,<span class="token number">5AH</span>
JA AA2
LEA <span class="token register variable">SI</span>,UPPER
MOV <span class="token register variable">CX</span>,<span class="token number">8</span>
<span class="token label function">AA4:</span> MOV <span class="token register variable">DL</span>,<span class="token operator">[</span><span class="token register variable">SI</span><span class="token operator">]</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
INC <span class="token register variable">SI</span>
LOOP AA4
JMP BB
<span class="token label function">AA2:</span> CMP <span class="token register variable">AL</span>,<span class="token number">61H</span>
JB AA3
CMP <span class="token register variable">AL</span>,<span class="token number">7AH</span>
JA AA3
LEA <span class="token register variable">SI</span>,LOWER
MOV <span class="token register variable">CX</span>,<span class="token number">8</span>
<span class="token label function">AA5:</span> MOV <span class="token register variable">DL</span>,<span class="token operator">[</span><span class="token register variable">SI</span><span class="token operator">]</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
INC <span class="token register variable">SI</span>
LOOP AA5
JMP BB
<span class="token label function">AA3:</span> LEA <span class="token register variable">SI</span>,OTHER
MOV <span class="token register variable">CX</span>,<span class="token number">7</span>
<span class="token label function">AA6:</span> MOV <span class="token register variable">DL</span>,<span class="token operator">[</span><span class="token register variable">SI</span><span class="token operator">]</span>
MOV <span class="token register variable">AH</span>,<span class="token number">2</span>
INT <span class="token number">21H</span>
INC <span class="token register variable">SI</span>
LOOP AA6
<span class="token label function">BB:</span> MOV <span class="token register variable">AH</span>,<span class="token number">4CH</span>
INT <span class="token number">21H</span>
CODE ENDS
END START
</pre><h2 class="mume-header" id="22%E5%BE%AA%E7%8E%AF%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1">(2/2)循环程序设计</h2>
<h3 class="mume-header" id="%E4%B8%80-%E5%9F%BA%E7%A1%80%E6%80%A7%E5%AE%9E%E9%AA%8C-1">一. 基础性实验</h3>
<h4 class="mume-header" id="1-%E5%AE%9E%E9%AA%8C%E7%9B%AE%E7%9A%84-2">1. 实验目的</h4>
<p>循环结构程序设计是使用循环控制类指令,实现对某程序段重复执行一定的次数. 通过本次实验,使学生初步掌握单重/多重循环程序的设计方法,为编制较大的程序和阅读较复杂程序打下基础.</p>
<h4 class="mume-header" id="2-%E5%AE%9E%E9%AA%8C%E5%86%85%E5%AE%B9-2">2. 实验内容</h4>
<p>设有 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>5</mn></mrow><annotation encoding="application/x-tex">5</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">5</span></span></span></span> 个学生参加 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn></mrow><annotation encoding="application/x-tex">4</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">4</span></span></span></span> 门课的考试,其中 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn></mrow><annotation encoding="application/x-tex">4</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">4</span></span></span></span> 门课的成绩以 <strong>压缩BCD码</strong> 方式存放在字组 <code>COURSE1</code> 中(设每门课的成绩满分为 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>99</mn></mrow><annotation encoding="application/x-tex">99</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">99</span></span></span></span> 分);试编制计算每个学生总分(总分存入字组 <code>NUM1</code> 中)的源程序.</p>
<h4 class="mume-header" id="3-%E5%AE%9E%E9%AA%8C%E4%BB%AA%E5%99%A8%E8%AE%BE%E5%A4%87-2">3. 实验仪器设备</h4>
<ul>
<li>硬件环境: AMD Ryzen 9.</li>
<li>软件环境: Windows XP Pro SP3 (in VMware Workstation 16 Pro).</li>
<li>编辑程序: Visual Studio Code 1.62.3.</li>
<li>调试程序: <code>DEBUG.EXE</code>.</li>
<li>编译程序: <code>MASM.EXE</code>.</li>
<li>连接程序: <code>LINK.EXE</code>.</li>
</ul>
<h4 class="mume-header" id="4-%E5%AE%9E%E9%AA%8C%E6%AD%A5%E9%AA%A4-2">4. 实验步骤</h4>
<ol>
<li>编译和连接</li>
<li>用单步方式运行程序</li>
</ol>
<pre data-role="codeBlock" data-info="batch" class="language-batch"><span class="token command"><span class="token keyword keyword-debug">debug</span> <span class="token number">4</span><span class="token number">-6</span>.exe</span>
</pre><pre data-role="codeBlock" data-info="py" class="language-python"><span class="token operator">-</span>t
</pre><p><img src="./4/4-1.png" alt></p>
<ol start="3">
<li>检查并记录各寄存器和存储单元内容的变化</li>
</ol>
<h4 class="mume-header" id="5-%E6%80%9D%E8%80%83%E9%A2%98-2">5. 思考题</h4>
<h5 class="mume-header" id="1-%E5%9C%A8%E7%A4%BA%E4%BE%8B%E9%A2%98%E4%B8%AD-jnz-%E6%8C%87%E4%BB%A4%E7%9A%84%E4%BD%9C%E7%94%A8%E6%98%AF%E4%BB%80%E4%B9%88">(1) 在示例题中, <code>JNZ</code> 指令的作用是什么?</h5>
<p>(嵌套)循环.</p>
<h5 class="mume-header" id="2-%E6%9C%AC%E6%AC%A1%E5%AE%9E%E9%AA%8C%E4%B8%AD%E5%87%BA%E7%8E%B0%E4%BA%86%E5%93%AA%E4%BA%9B%E9%94%99%E8%AF%AF-%E5%A6%82%E4%BD%95%E6%8E%92%E9%99%A4">(2) 本次实验中,出现了哪些错误? 如何排除?</h5>
<p>无.<br>
无需排除.</p>
<h3 class="mume-header" id="%E4%BA%8C-%E5%8A%A0%E5%BC%BA%E5%9E%8B%E5%AE%9E%E9%AA%8C-1">二. 加强型实验</h3>
<h4 class="mume-header" id="1-%E5%AE%9E%E9%AA%8C%E7%9B%AE%E7%9A%84-3">1. 实验目的</h4>
<p>进一步掌握循环结构程序设计是使用循环控制类指令.</p>
<h4 class="mume-header" id="2-%E5%AE%9E%E9%AA%8C%E5%86%85%E5%AE%B9-3">2. 实验内容</h4>
<p>将一个 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn><mo>×</mo><mn>4</mn></mrow><annotation encoding="application/x-tex">4\times4</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.72777em;vertical-align:-0.08333em;"></span><span class="mord">4</span><span class="mspace" style="margin-right:0.2222222222222222em;"></span><span class="mbin">×</span><span class="mspace" style="margin-right:0.2222222222222222em;"></span></span><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">4</span></span></span></span> 的矩阵与一个 <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn><mo>×</mo><mn>1</mn></mrow><annotation encoding="application/x-tex">4\times1</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.72777em;vertical-align:-0.08333em;"></span><span class="mord">4</span><span class="mspace" style="margin-right:0.2222222222222222em;"></span><span class="mbin">×</span><span class="mspace" style="margin-right:0.2222222222222222em;"></span></span><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">1</span></span></span></span> 的矩阵相乘,并将所得的矩阵存入单元中.</p>
<h4 class="mume-header" id="3-%E5%AE%9E%E9%AA%8C%E4%BB%AA%E5%99%A8%E8%AE%BE%E5%A4%87-3">3. 实验仪器设备</h4>
<ul>
<li>硬件环境: AMD Ryzen 9.</li>
<li>软件环境: Windows XP Pro SP3 (in VMware Workstation 16 Pro).</li>
<li>编辑程序: Visual Studio Code 1.62.3.</li>
<li>调试程序: <code>DEBUG.EXE</code>.</li>
<li>编译程序: <code>MASM.EXE</code>.</li>
<li>连接程序: <code>LINK.EXE</code>.</li>
</ul>
<h4 class="mume-header" id="4-%E5%AE%9E%E9%AA%8C%E6%AD%A5%E9%AA%A4-3">4. 实验步骤</h4>
<ol>
<li>编译和连接</li>
<li>用单步方式运行程序</li>
</ol>
<pre data-role="codeBlock" data-info="batch" class="language-batch"><span class="token command"><span class="token keyword keyword-debug">debug</span> <span class="token number">4</span><span class="token number">-7</span>.exe</span>
</pre><pre data-role="codeBlock" data-info="py" class="language-python"><span class="token operator">-</span>t
</pre><p><img src="./4/4-2.png" alt></p>
<ol start="3">
<li>检查并记录各寄存器和存储单元内容的变化</li>
</ol>
</div>
</body></html>