{"id":5923,"date":"2024-04-17T00:14:03","date_gmt":"2024-04-16T16:14:03","guid":{"rendered":"http:\/\/zyg.luchers.cn\/?p=5923"},"modified":"2024-04-17T00:14:03","modified_gmt":"2024-04-16T16:14:03","slug":"%e7%ac%ac%e4%ba%94%e7%ab%a0%e3%80%81%e8%be%93%e5%85%a5%e8%be%93%e5%87%ba%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"http:\/\/zyg.luchers.cn\/index.php\/2024\/04\/17\/%e7%ac%ac%e4%ba%94%e7%ab%a0%e3%80%81%e8%be%93%e5%85%a5%e8%be%93%e5%87%ba%e7%b3%bb%e7%bb%9f\/","title":{"rendered":"\u7b2c\u4e94\u7ae0\u3001\u8f93\u5165\u8f93\u51fa\u7cfb\u7edf"},"content":{"rendered":"

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5.1\u3001\u6982\u8ff0<\/h2>\n

5.1.1\u3001\u8f93\u5165\u8f93\u51fa\u7cfb\u7edf\u7684\u53d1\u5c55\u6982\u51b5<\/h3>\n

1\u3001\u65e9\u671f<\/h4>\n

1\u3001\u5206\u6563\u8fde\u63a5<\/p>\n

2\u3001CPU\u548cI\/O\u8bbe\u5907 \u4e32\u884c\u5de5\u4f5c<\/strong>\u7a0b\u5e8f\u7a0b\u5e8f\u65b9\u5f0f<\/p>\n

2\u3001\u63a5\u53e3\u6a21\u5757\u548cDMA\u9636\u6bb5<\/h4>\n

1\u3001\u603b\u7ebf\u8fde\u63a5<\/p>\n

2\u3001CPU\u548cI\/O\u8bbe\u5907\u5e76\u884c<\/strong>\u5de5\u4f5c\uff08\u4e2d\u65ad\u65b9\u5f0f\u3001DMA\u65b9\u5f0f\uff09<\/p>\n

3\u3001\u5177\u6709\u901a\u9053\u7ed3\u6784\u7684\u9636\u6bb5<\/h4>\n

4\u3001\u5177\u6709I\/O\u5904\u7406\u673a\u7684\u9636\u6bb5<\/h4>\n

5.1.2\u3001\u8f93\u5165\u8f93\u51fa\u7cfb\u7edf\u7684\u7ec4\u6210<\/h3>\n

1\u3001I\/O\u8f6f\u4ef6<\/h4>\n

1\u3001I\/O\u6307\u4ee4<\/h5>\n

1\u3001\u662fCPU\u6307\u4ee4\u7684\u4e00\u90e8\u5206<\/p>\n

2\u3001\u683c\u5f0f<\/p>\n

\"image-20230814202736283\"<\/div><\/p>\n
2\u3001\u901a\u9053\u6307\u4ee4<\/h5>\n

1\u3001\u901a\u9053\u53ef\u4ee5\u8fd0\u884c\u81ea\u8eab\u7684\u901a\u9053\u6307\u4ee4<\/p>\n

2\u3001\u5e7f\u4e49\u7684I\/O\u6307\u4ee4<\/p>\n

3\u3001\u6307\u51fa\u6570\u7ec4\u7684\u9996\u5730\u5740\u3001\u4f20\u9001\u5b57\u6570\u3001\u64cd\u4f5c\u547d\u4ee4<\/p>\n

4\u3001\u901a\u9053\u6307\u4ee4\u957f\u3001\u8fd8\u53ef\u4ee5\u6709\u5b50\u6307\u4ee4\uff0c\u53ef\u4ee5\u8fde\u63a5\u591a\u4e2a\u64cd\u4f5c\u5668<\/p>\n

5\u3001\u5982IBM\/370\u901a\u9053\u6307\u4ee4\u4e3a64\u4f4d<\/p>\n

2\u3001I\/O\u786c\u4ef6<\/h4>\n

1\u3001\u8bbe\u5907 I\/O\u63a5\u53e3<\/p>\n

2\u3001\u8bbe\u5907 \u8bbe\u5907\u63a7\u5236\u5668 \u901a\u9053<\/p>\n

5.1.3\u3001I\/O\u8bbe\u5907\u4e0e\u4e3b\u673a\u7684\u8054\u7cfb\u65b9\u5f0f<\/h3>\n

1\u3001I\/O\u8bbe\u5907\u7684\u7f16\u5740\u65b9\u5f0f<\/h4>\n

1\u3001\u7edf\u4e00\u7f16\u5740<\/h5>\n

1\u3001\u7528\u53d6\u6570\u3001\u5b58\u6570\u6307\u4ee4\u5bf9IO\u8bbe\u5907\u8fdb\u884c\u8bbf\u95ee<\/p>\n

2\u3001\u4e0d\u7edf\u4e00\u7f16\u5740\uff08\u72ec\u7acb\u7f16\u5740\uff09<\/h5>\n

1\u3001\u5185\u5b58\u5730\u5740\u7a7a\u95f4\u4e4b\u5916\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u5730\u5740\u7a7a\u95f4<\/p>\n

2\u3001\u6709\u4e13\u95e8\u7684IO\u6307\u4ee4<\/p>\n

2\u3001\u8bbe\u5907\u9009\u5740<\/h4>\n

1\u3001\u7528\u8bbe\u5907\u9009\u62e9\u7535\u8def<\/strong>\u8bc6\u522b\u662f\u5426\u88ab\u9009\u4e2d<\/p>\n

3\u3001\u4f20\u9001\u65b9\u5f0f<\/h4>\n

1\u3001\u4e32\u884c<\/p>\n

2\u3001\u5e76\u884c<\/p>\n

4\u3001\u8054\u7edc\u65b9\u5f0f<\/h4>\n

1\u3001\u7acb\u5373\u54cd\u5e94<\/h5>\n

1\u3001\u6570\u91cf\u5c11\u72b6\u6001\u5c11<\/p>\n

2\u3001\u76f4\u63a5\u8fdb\u884c\u663e\u793a<\/p>\n

3\u3001\u4f8b\u5982LED\u706f<\/p>\n

2\u3001\u5f02\u6b65\u5de5\u4f5c\u91c7\u7528\u5e94\u7b54\u4fe1\u53f7<\/h5>\n

1\u3001\u5e76\u884c\u4f20\u8f93<\/p>\n

2\u3001IO\u63a5\u53e3\u548cIO\u8bbe\u5907\u8981\u6709\u591a\u6761\u6570\u636e\u7ebf\uff0c\u7ec4\u6210\u7c7b\u4f3c\u603b\u7ebf\uff0c\u7ec4\u6210\u6570\u636e\u7684\u5b9a\u578b\u8f93\u51fa<\/p>\n

3\u3001\u9700\u8981\u51c6\u5907\u5e94\u7b54\u4fe1\u53f7<\/p>\n

4\u3001\u56fe\u4f8b<\/p>\n

\"image-20230814204054316\"<\/div><\/p>\n

5\u3001\u4e32\u884c\u4f20\u8f93<\/p>\n

\"image-20230814204230089\"<\/div><\/p>\n
3\u3001\u540c\u6b65\u5de5\u4f5c\u91c7\u7528\u540c\u6b65\u65f6\u6807<\/h5>\n

1\u3001\u9700\u8981\u4e00\u4e2a\u5b9a\u5bbd\u5b9a\u8ddd\u7684\u6307\u6807<\/p>\n

5.1.4\u3001I\/O\u8bbe\u5907\u4e0e\u4e3b\u673a\u7684\u8fde\u63a5\u65b9\u5f0f<\/h3>\n

1\u3001\u8f90\u5c04\u5f0f\u8fde\u63a5\uff08\u5206\u6563\u8fde\u63a5\uff09<\/h4>\n

1\u3001\u6bcf\u4e2a\u5916\u8bbe\u90fd\u9700\u8981\u548c\u4e3b\u673a\u914d\u7f6e\u4e00\u5957\u63a7\u5236\u7535\u8def\u548c\u4e00\u7ec4\u4fe1\u53f7\u7ebf<\/p>\n

2\u3001\u4f1a\u9020\u6210\u5220\u9664\u548c\u589e\u52a0\u5916\u90e8\u8bbe\u5907\u9ebb\u70e6<\/p>\n

3\u3001\u4e0d\u4fbf\u4e8e\u589e\u5220\u8bbe\u5907\uff0c\u79fb\u690d\u6027\u5dee<\/p>\n

\"image-20230814204548057\"<\/div><\/p>\n

2\u3001\u603b\u7ebf\u8fde\u63a5<\/h4>\n

1\u3001\u4e3b\u673a\u4e2d\u7684\u6570\u636e\u53ef\u4ee5\u5728\u63a5\u53e3\u4e2d\u8fdb\u884c\u7f13\u5b58<\/p>\n

2\u3001\u4fbf\u4e8e\u589e\u5220\u8bbe\u5907\uff0c\u79fb\u690d\u6027\u597d<\/p>\n

5.1.5\u3001IO\u8bbe\u5907\u4e0e\u4e3b\u673a\u4fe1\u606f\u4f20\u9001\u7684\u63a7\u5236\u65b9\u5f0f<\/h3>\n

1\u3001\u7a0b\u5e8f\u67e5\u8be2\u65b9\u5f0f<\/h4>\n

1\u3001CPU\u548c\u5916\u8bbe\u91c7\u7528\u4e32\u884c<\/p>\n

2\u3001CPU\u5904\u4e8e\u5faa\u73af\u7b49\u5f85\u72b6\u6001\uff0c\u6548\u7387\u4f4e<\/p>\n

3\u3001\u56fe\u793a<\/p>\n

\"image-20230814205624411\"<\/div><\/p>\n

2\u3001\u7a0b\u5e8f\u4e2d\u65ad\u65b9\u5f0f<\/h4>\n

1\u3001CPU\u5b9e\u73b0\u548cIO\u8bbe\u5907\u7684\u5f02\u65f6\u64cd\u4f5c<\/p>\n

2\u3001CPU\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u89e3\u653e\u4e86IO\u5de5\u4f5c<\/p>\n

3\u3001\u5916\u90e8\u8bbe\u5907\u5de5\u4f5c\u65f6\uff0cCPU\u4e0d\u8fdb\u884c\u72b6\u6001\u68c0\u6d4b\uff0c\u53ea\u6709IO\u51c6\u5907\u597d\u4e86\uff0c\u53d1\u9001\u4e00\u4e2a\u4e2d\u65ad\u8bf7\u6c42\uff0cCPU\u624d\u4f1a\u653e\u4e0b\u624b\u4e2d\u7684\u5de5\u4f5c\uff0c\u8fdb\u884cIO\u5de5\u4f5c<\/p>\n

4\u3001\u56fe\u4f8b<\/p>\n

\"image-20230814210446655\"<\/div><\/p>\n

5\u3001CPU\u6ca1\u6709\u8e0f\u6b65\u7b49\u5f85\u72b6\u6001<\/p>\n

6\u3001CPU\u548cIO\u53ef\u4ee5\u90e8\u5206\u8fdb\u884c\u5e76\u884c\u64cd\u4f5c<\/p>\n

7\u3001CPU\u653e\u4e0b\u624b\u4e2d\u5de5\u4f5c\uff0c\u9700\u8981\u8bb0\u5f55\u6807\u8bb0\uff0c\u4fbf\u4e8e\u4e2d\u65ad\u5de5\u4f5c\u5b8c\u6210\u540e\u7ee7\u7eed\u8fdb\u884c\uff0c\u4f46\u662f\u4f1a\u635f\u8017CPU\u7684\u90e8\u5206\u5185\u5b58\u548c\u6548\u7387<\/p>\n

1\u3001\u7a0b\u5e8f\u4e2d\u65ad\u65b9\u5f0f\u6d41\u7a0b\u56fe<\/h5>\n

\"image-20230814210826525\"<\/div><\/p>\n

3\u3001DMA\u65b9\u5f0f<\/h4>\n

1\u3001\u628aCPU\u4eceIO\u8bbe\u5907\u66f4\u5206\u79bb\u51fa\u6765<\/p>\n

2\u3001\u4e3b\u5b58\u548cIO\u4e4b\u95f4\u6709\u4e00\u6761\u76f4\u63a5\u6570\u636e\u901a\u9053<\/p>\n

3\u3001\u4e0d\u4e2d\u65ad\u73b0\u884c\u7a0b\u5e8f<\/p>\n

3\u3001\u5468\u671f\u632a\u7528\uff08\u7a83\u53d6\uff09<\/p>\n

4\u3001\u5360\u7528\u603b\u7ebf\u7684\u4f7f\u7528\u6743\uff0c\u671f\u95f4CPU\u4e0d\u80fd\u5bf9\u4e3b\u5b58\u8fdb\u884c\u8bbf\u95ee<\/p>\n

5\u3001\u56fe\u793a<\/p>\n

\"image-20230814211647527\"<\/div><\/p>\n

4\u3001\u5bf9\u4e09\u4e2d\u65b9\u5f0f\u7684CPU\u5de5\u4f5c\u6548\u7387\u6bd4\u8f83<\/h4>\n

1\u3001\u56fe\u793a<\/p>\n

\"image-20230814212306889\"<\/div><\/p>\n

1\u3001\u968f\u7740\u65f6\u4ee3\u7684\u53d1\u5c55\uff0cIO\u8bbe\u5907\u4f1a\u66f4\u52a0\u81ea\u7531<\/p>\n

5.2\u3001\u5916\u90e8\u8bbe\u5907<\/h2>\n

5.2.1\u3001\u6982\u8ff0<\/h3>\n

1\u3001\u56fe\u793a<\/h4>\n

\"image-20230814213651684\"<\/div><\/p>\n

2\u3001\u5916\u90e8\u8bbe\u5907\u5927\u81f4\u5206\u4e09\u7c7b<\/h4>\n

1\u3001\u5185\u5bb9<\/p>\n

\"image-20230814213729515\"<\/div><\/p>\n

5.2.2\u3001\u8f93\u5165\u8bbe\u5907<\/h3>\n

1\u3001\u952e\u76d8<\/h4>\n

1\u3001\u6309\u952e<\/p>\n

2\u3001\u5224\u65ad\u54ea\u4e2a\u952e\u6309\u4e0b<\/p>\n

3\u3001\u5c06\u6b64\u952e\u7ffb\u8bd1\u6210ASCI\u7801\uff08\u7f16\u7801\u952e\u76d8\u6cd5\uff09<\/p>\n

2\u3001\u9f20\u6807<\/h4>\n

1\u3001\u673a\u68b0\u5f0f\uff1a\u91d1\u5c5e\u7403\uff0c\u7535\u4f4d\u5668<\/p>\n

2\u3001\u5149\u7535\u5f0f\uff1a\u5149\u7535\u8f6c\u56de\u53bb<\/p>\n

3\u3001\u89e6\u6478\u5c4f<\/h4>\n

5.2.3\u3001\u8f93\u51fa\u8bbe\u5907<\/h3>\n

1\u3001\u663e\u793a\u5668<\/h4>\n

1\u3001\u5b57\u7b26\u663e\u793a<\/h5>\n

1\u3001\u5b57\u7b26\u53d1\u751f\u5668\uff0c\u5c06ASCII\u8f6c\u6362\u6210\u5b57\u5217<\/p>\n

2\u3001\u56fe\u5f62\u663e\u793a<\/h5>\n

1\u3001\u8f6c\u6362\u663e\u793a\u4e3b\u89c2\u56fe\u50cf\uff08\u70b9\u7ebf\u9762\u6784\u6210\u7684\uff09<\/p>\n

3\u3001\u56fe\u50cf\u663e\u793a<\/h5>\n

1\u3001\u5ba2\u89c2\u56fe\u50cf\uff08\u7167\u7247\u3001\u89c6\u9891\uff09<\/p>\n

2\u3001\u6253\u5370\u673a<\/h4>\n

1\u3001\u6253\u51fb\u5f0f<\/h5>\n

1\u3001\u70b9\u9635\u5f0f\uff08\u9010\u5b57\u9010\u884c\u6253\u5370\uff09<\/p>\n

2\u3001\u7528\u5f69\u7eb8\u9488\u6253\u5370<\/p>\n

3\u3001\u4f8b\u5982\u51fa\u79df\u8f66\u6253\u5370\u6761<\/p>\n

2\u3001\u975e\u6253\u51fb\u5f0f<\/h5>\n

1\u3001\u6fc0\u5149\uff08\u9010\u9875\uff09\u55b7\u58a8\uff08\u9010\u884c\uff09<\/p>\n

5.2.4\u3001\u5176\u5b83<\/h3>\n

1\u3001A\/D\u3001D\/A \u6a21\u62df\/\u6570\u5b57\uff08\u6570\u5b57\/\u6a21\u62df\uff09\u8f6c\u6362\u5668<\/h4>\n

1\u3001A\uff1a\u6a21\u62df\u4fe1\u53f7<\/p>\n

2\u3001D\uff1a\u6570\u5b57\u4fe1\u53f7<\/p>\n

2\u3001\u7ec8\u7aef<\/h4>\n

1\u3001\u7531\u952e\u76d8\u548c\u663e\u793a\u5668\u7ec4\u6210<\/p>\n

2\u3001\u5b8c\u5168\u663e\u793a\u63a7\u5236\u4e0e\u5b58\u50a8\u3001\u952e\u76d8\u7ba1\u7406\u53ca\u901a\u4fe1\u63a7\u5236<\/p>\n

3\u3001\u6c49\u5b57\u5904\u7406<\/h4>\n

1\u3001\u6c49\u5b57\u8f93\u5165\u3001\u6c49\u5b57\u5b58\u50a8\u3001\u6c49\u5b57\u8f93\u51fa<\/p>\n

5.2.5\u3001\u591a\u5a92\u4f53\u8bbe\u5907<\/h3>\n

1\u3001\u4ec0\u4e48\u662f\u591a\u5a92\u4f53<\/h4>\n

2\u3001\u591a\u5a92\u4f53\u8ba1\u7b97\u673a\u7684\u5173\u952e\u6280\u672f<\/h4>\n

5.3\u3001IO\u63a5\u53e3<\/h2>\n

5.3.1\u3001\u6982\u8ff0<\/h3>\n

1\u3001\u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6e\u63a5\u53e3\uff1f\uff08\u529f\u80fd\uff09<\/h4>\n

1\u3001\u5b9e\u73b0\u8bbe\u5907\u7684\u9009\u62e9<\/p>\n

2\u3001\u5b9e\u73b0\u6570\u636e\u7f13\u51b2\u8fbe\u5230\u901f\u5ea6\u5339\u914d<\/p>\n

3\u3001\u5b9e\u73b0\u6570\u636e\u4e32\u884c\u2014\u5e76\u683c\u5f0f\u8f6c\u6362<\/p>\n

4\u3001\u5b9e\u73b0\u7535\u5e73\u8f6c\u6362<\/p>\n

5\u3001\u4f20\u9001\u63a7\u5236\u547d\u4ee4<\/p>\n

6\u3001\u53cd\u6620\u8bbe\u5907\u7684\u72b6\u6001\uff08\u201c\u5fd9\u201d\u3001\u201c\u5c31\u7eea\u201d\u3001\u201c\u4e2d\u65ad\u8bf7\u6c42\u201d\uff09<\/p>\n

5.3.2\u3001\u63a5\u53e3\u7684\u529f\u80fd\u548c\u7ec4\u6210<\/h3>\n

1\u3001\u603b\u7ebf\u8fde\u63a5\u65b9\u5f0f\u7684I\/O\u63a5\u53e3\u7535\u8def<\/h4>\n

\"image-20230814220441871\"<\/div><\/p>\n
1\u3001\u8bbe\u5907\u6570\u636e\u7ebf<\/h5>\n

1\u3001\u672c\u6b21\u4fe1\u606f\u4ea4\u6362\u7684\u8bbe\u5907\u7801\u3001\u7aef\u53e3\u53f7\uff0c\u8bbe\u5907\u7684\u5730\u5740\u6216\u7aef\u53e3\u7684\u5730\u5740\uff0c\u4f20\u8f93\u7ed9IO\u63a5\u53e3<\/p>\n

2\u3001\u662f\u4e00\u6761\u5355\u5411\u7ebf<\/p>\n

2\u3001\u6570\u636e\u7ebf<\/h5>\n

1\u3001\u5b8c\u6210\u6570\u636e\u7684\u8f93\u5165\u548c\u8f93\u51fa<\/p>\n

2\u3001\u6761\u6570\u548c\u6570\u636e\u4f20\u8f93\u7c7b\u578b\u6709\u5173<\/p>\n

3\u3001\u662f\u53cc\u5411\u7ebf<\/p>\n

3\u3001\u547d\u4ee4\u7ebf<\/h5>\n

1\u3001\u901a\u8fc7\u547d\u4ee4\u8f93\u5165\u5230IO\u7cfb\u7edf\u4e2d<\/p>\n

2\u3001\u7f13\u5b58\u8bd1\u7801\u540e\u53ef\u4ee5\u63a7\u5236\u8bbe\u5907\u7684\u7ebf<\/p>\n

4\u3001\u72b6\u6001\u7ebf<\/h5>\n

1\u3001IO\u63a5\u53e3\u3001IO\u603b\u7ebf\u3001\u518d\u9001\u5230\u4e3b\u673a\u5316\u603b<\/p>\n

2\u3001\u529f\u80fd\u548c\u7ec4\u6210<\/h4>\n

\"image-20230814221002137\"<\/div><\/p>\n

3\u3001I\/O\u63a5\u53e3\u7684\u57fa\u672c\u7ec4\u6210<\/h4>\n

\"image-20230814221322559\"<\/div><\/p>\n

5.3.3\u3001\u63a5\u53e3\u7c7b\u578b<\/h3>\n

1\u3001\u6309\u6570\u636e\u4f20\u9001\u65b9\u5f0f\u5206\u7c7b<\/h4>\n

1\u3001\u5e76\u884c\u63a5\u53e3\uff1aIntel8255<\/p>\n

2\u3001\u4e32\u884c\u63a5\u53e3\uff1aIntel8251<\/p>\n

2\u3001\u6309\u529f\u80fd\u9009\u62e9\u7684\u7075\u6d3b\u6027\u5206\u7c7b<\/h4>\n

1\u3001\u53ef\u7f16\u7a0b\u63a5\u53e3\uff1aIntel8255\u3001Intel8251<\/p>\n

2\u3001\u4e0d\u53ef\u7f16\u7a0b\u63a5\u53e3\uff1aIntel8212<\/p>\n

3\u3001\u6309\u901a\u7528\u6027\u5206\u7c7b<\/h4>\n

1\u3001\u901a\u7528\u63a5\u53e3\uff1aIntel8255<\/p>\n

2\u3001\u4e13\u7528\u63a5\u53e3\uff1aIntel8275<\/p>\n

4\u3001\u6309\u6570\u636e\u4f20\u9001\u7684\u63a7\u5236\u65b9\u5f0f\u5206\u7c7b<\/h4>\n

1\u3001\u4e2d\u65ad\u65b9\u5f0f\uff1aIntel8259<\/p>\n

2\u3001DMA\u63a5\u53e3\uff1aIntel8257<\/p>\n

5.4\u3001\u7a0b\u5e8f\u67e5\u8be2\u65b9\u5f0f<\/h2>\n

5.4.1\u3001\u7a0b\u5e8f\u67e5\u8be2\u65b9\u5f0f\u7684\u6d41\u7a0b<\/h3>\n

1\u3001\u7a0b\u5e8f\u67e5\u8be2\u6d41\u7a0b<\/h4>\n

1\u3001\u67e5\u8be2\u6d41\u7a0b<\/h5>\n

1\u3001\u5355\u4e2a\u8bbe\u5907\uff08\u56fe\uff09<\/p>\n

\"image-20230814222558453\"<\/div><\/p>\n

2\u3001\u591a\u4e2a\u8bbe\u5907\uff08\u56fe\uff09<\/p>\n

\"image-20230814222637032\"<\/div><\/p>\n
2\u3001\u7a0b\u5e8f\u6d41\u7a0b<\/h5>\n

1\u3001\u8bbe\u7f6e\u8ba1\u6570\u503c\uff1a\u4e3a\u4e86\u63a7\u5236\u4f20\u8f93\u5185\u5bb9\u5927\u5c0f<\/p>\n

2\u3001\u7528\u8fd9\u6bb5\u7a0b\u5e8f\u6d41\u7a0b\u6765\u8fdb\u884c\u4f20\u8f93<\/p>\n

\"image-20230814223236112\"<\/div><\/p>\n

5.4.2\u3001\u7a0b\u5e8f\u67e5\u8be2\u65b9\u5f0f\u7684\u63a5\u53e3\u7535\u8def<\/h3>\n

1\u3001\u4ee5\u8f93\u5165\u4e3a\u4f8b<\/h4>\n

1\u3001D\u4e3a1\u4e4b\u524d\uff0cCPU\u67e5\u8be2\u90fd\u5728\u4e0d\u65ad\u91cd\u590d\u67e5\u8be2\uff0c\u76f4\u5230D\u4e3a1\uff0cCPU\u5c31\u53ef\u4ee5\u901a\u8fc7\u6570\u636e\u7ebf\u8fdb\u884c\u8bfb\u5165\u6570\u636e<\/p>\n

\"image-20230814223905689\"<\/div><\/p>\n

2.\u5dee\u4e2a\u8f93\u51fa\u6d41\u7a0b\u56fe<\/p>\n

5.5\u3001\u7a0b\u5e8f\u4e2d\u65ad\u65b9\u5f0f<\/h2>\n

5.5.1\u3001\u4e2d\u65ad\u7684\u6982\u5ff5<\/h3>\n

1\u3001\u6982\u5ff5<\/h4>\n

1\u3001CPU\u6267\u884c\u4efb\u52a1\u8fc7\u7a0b\u4e2d\uff0c\u9047\u5230\u610f\u5916\u4e8b\u4ef6\uff0cCPU\u9700\u8981\u4e2d\u65ad\u5f53\u524d\u4efb\u52a1\uff0c\u53bb\u5904\u7406\u610f\u5916\u4e8b\u4ef6<\/p>\n

2\u3001\u56fe\u89e3<\/h4>\n

\"image-20230814224442777\"<\/div><\/p>\n

5.5.2\u3001I\/O\u4e2d\u65ad\u7684\u4ea7\u751f<\/h3>\n

1\u3001\u4ee5\u6253\u5370\u673a\u4e3a\u4f8b<\/h4>\n

1\u3001\u56fe\u89e3<\/p>\n

\"image-20230814225146160\"<\/div><\/p>\n

1\u3001CPU\u4e0e\u6253\u5370\u673a\u90e8\u5206\u5e76\u884c\u5de5\u4f5c<\/p>\n

5.5.3\u3001\u7a0b\u5e8f\u4e2d\u65ad\u65b9\u5f0f\u7684\u63a5\u53e3\u7535\u8def<\/h3>\n

1\u3001\u914d\u7f6e\u4e2d\u65ad\u8bf7\u6c42\u89e6\u53d1\u5668\u548c\u4e2d\u65ad\u5c4f\u853d\u89e6\u53d1\u5668<\/h4>\n

1\u3001\u56fe\u89e3<\/p>\n

\"image-20230814225838667\"<\/div><\/p>\n

2\u3001\u6392\u961f\u5668<\/h4>\n

1\u3001\u786c\u4ef6\u6392\u961f\uff1a\u5728CPU\u5185\u3001\u6216\u63a5\u53e3\u7535\u8def\u4e2d\uff08\u94fe\u5f0f\u6392\u961f\u5668\uff09<\/p>\n

2\u3001\u8f6f\u4ef6\u6392\u961f\uff1a\u6bd4\u8f83\u4f18\u5148\u7ea7\uff08\u7b2c\u516b\u7ae0\u8bb2\uff09<\/p>\n

3\u3001\u94fe\u5f0f\u6392\u961f\u5668\u56fe\u89e3<\/p>\n

\"image-20230814231236636\"<\/div><\/p>\n

4\u3001\u975e\u95e8\uff1a\u8f93\u51650\uff0c\u8f93\u51fa\u5219\u4e3a1<\/p>\n

4\u3001\u4e0e\u95e8\uff1a\u8f93\u5165a0\uff0cb0\uff0c\u5219\u8f93\u51fac1\uff0c\u4e0e\u4e4b\u76f8\u53cd<\/p>\n

3\u3001\u4e2d\u65ad\u5411\u91cf\u5730\u5740\u5f62\u6210\u90e8\u4ef6<\/h4>\n

\"image-20230814232126163\"<\/div><\/p>\n

1\u3001\u4e2d\u65ad\u53f7\uff1a\u4e2d\u65ad\u7c7b\u578b\u7801\uff0c\u6bcf\u4e2a\u4e2d\u65ad\u7c7b\u578b\u7801\u5bf9\u5e94\u4e0d\u540c\u7684\u4e2d\u65ad<\/p>\n

2\u3001\u4e2d\u65ad\u5411\u91cf\uff1a\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u7684\u5165\u53e3\u5730\u5740\uff08\u5305\u62ec\u6bb5\u5730\u5740\u3001\u504f\u79fb\u503c\u3001\u548c\u4e00\u4e9b\u4e2d\u65ad\u7684\u72b6\u6001\u4fe1\u606f\uff09<\/p>\n

3\u3001\u5411\u91cf\u5730\u5740\uff1a\u4e2d\u65ad\u5411\u91cf\u4fdd\u5b58\u5185\u5b58\u5355\u5143\u7684\u5730\u5740<\/p>\n

4\u3001\u5165\u53e3\u5730\u5740\uff1b\u6709\u4e2d\u65ad\u5411\u91cf\u5f62\u6210<\/p>\n

5\u3001\u56fe\u89e3<\/p>\n

\"image-20230814232207961\"<\/div><\/p>\n

6\u3001\u5411\u91cf\u5730\u5740\u662f\u7531\u603b\u7ebf\u548c\u6570\u636e\u7ebf\u8f93\u9001\u5230CPU\u4e2d<\/p>\n

7\u3001\u56fe\u89e3<\/p>\n

\"image-20230814232414835\"<\/div><\/p>\n

4\u3001\u7a0b\u5e8f\u4e2d\u65ad\u65b9\u5f0f\u63a5\u53e3\u7535\u8def\u7684\u57fa\u672c\u7ec4\u6210<\/h4>\n

\"image-20230814232823550\"<\/div><\/p>\n

5.5.4\u3001I\/O\u4e2d\u65ad\u5904\u7406\u8fc7\u7a0b<\/h3>\n

1\u3001CPU\u54cd\u5e94\u4e2d\u65ad\u7684\u6761\u4ef6\u548c\u65f6\u95f4<\/h4>\n

1\u3001\u6761\u4ef6<\/h5>\n

1\u3001\u5141\u8bb8\u4e2d\u65ad\u89e6\u53d1\u5668\uff1aEINT=1<\/p>\n

2\u3001\u7528\u5f00\u4e2d\u65ad\u6307\u4ee4\u5c06EINT\u8bbe\u7f6e\u4e3a\u201c1\u201d<\/p>\n

3\u3001\u7528\u5173\u4e2d\u65ad\u6307\u4ee4\u5c06EINT\u8bbe\u7f6e\u4e3a\u201c0\u201d\u6216\u786c\u4ef6\u81ea\u52a8\u590d\u4f4d<\/p>\n

2\u3001\u65f6\u95f4<\/h5>\n

1\u3001\u5f53D=1\uff08\u968f\u673a\uff09\u3001\u4e14Mask=0\u65f6<\/p>\n

2\u3001\u5728\u6bcf\u6761\u6307\u4ee4\u6267\u884c\u9636\u6bb5\u7684\u7ed3\u675f\u524d<\/p>\n

3\u3001CPU\u53d1\u4e2d\u65ad\u67e5\u8be2\u4fe1\u53f7\uff08\u5c06INTR\u7f6e\u4f4d\u201c1\u201d\uff09<\/p>\n

2\u3001I\/O\u4e2d\u65ad\u5904\u7406\u8fc7\u7a0b<\/h4>\n

1\u3001\u4ee5\u8f93\u51fa\u4e3a\u4f8b<\/p>\n

\"image-20230816103750436\"<\/div><\/p>\n

1\u3001\u4e3b\u673a\u901a\u8fc7\u5730\u5740\u7ebf\uff0c\u53d1\u9001\u6240\u9700\u7684IIO\u8bbe\u5907\u8ba9\u8bbe\u5907\u9009\u62e9\u7535\u8def\u67e5\u8be2\uff0c\u5982\u679c\u6709\uff0c\u5c31\u8fdb\u5165\u2460\u542f\u52a8\u547d\u4ee41:1\u4e0e\u95e8\uff0c\u7ed3\u679c\u662f1<\/p>\n

2\u3001\u6b64\u65f6D\u548cB\u5206\u522b\u662f0:1\uff0cB\u662f1\u5c31\u5f00\u59cb\u2461\u542f\u52a8\u8bbe\u5907\uff0c\u5f00\u59cb\u4f20\u8f93\u6570\u636e\u2462\u5230DBR\u7f13\u5b58\u4e2d\uff0c\u4f20\u8f93\u5b8c\u6210\u540e\u5c31\u5f00\u59cb\u2463\u8bbe\u5907\u5de5\u4f5c\u7ed3\u675f\uff0c\u901a\u8fc7\u975e\u95e8\uff0c\u6b64\u65f6D\u548cB\u5206\u8d1d\u662f1:0\uff0c\u6b64\u65f6\u5f00\u59cbINTR\uff08\u4e2d\u65ad\u8bf7\u6c42\u89e6\u53d1\u5668\uff09\u2464\u4e2d\u65ad\u5f00\u59cb\u5df2\u67e5\u8be2\uff0c\u6b64\u65f6INTR\u72b6\u6001\u4e3a1\uff0c\u5f00\u59cb\u53d1\u9001\u4e2d\u65ad\u8bf7\u6c42\u2465\uff0c\u7ee7\u7eed\u8fdb\u5165\u6392\u961f\u5668\u4e2d\uff0c\u7ecf\u8fc7\u6392\u961f\u5668\u7684\u640f\u6740\uff0c\u53ea\u6709\u4e00\u4e2a\u72b6\u6001\u4e3a1\u7684\u4e2d\u65ad\u8bf7\u6c42\uff0cCPU\u5de5\u4f5c\u671f\u95f4\u53d1\u73b0\u6709\u4e2d\u65ad\u8bf7\u6c42\u2466\u5c31\u5f00\u59cb\u4e2d\u65ad\uff0c\u901a\u8fc7\u8bbe\u5907\u7f16\u7801\u5668\uff0c\u5c06\u4e2d\u65ad\u5411\u91cf\u901a\u8fc7\u5730\u5740\u7ebf\u53d1\u9001\u7ed9CPU<\/p>\n

5.5.5\u3001\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u6d41\u7a0b<\/h3>\n

1\u3001\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u6d41\u7a0b<\/h4>\n

1\u3001\u4fdd\u62a4\u73b0\u573a<\/h5>\n

1\u3001\u7a0b\u5e8f\u65ad\u70b9\u7684\u4fdd\u62a4 \u4e2d\u65ad\u9690\u6307\u4ee4\u5b8c\u6210\uff1a\u672c\u8eab\u4e0d\u662f\u6307\u4ee4\u662f\u7cfb\u7edf\u5185\u90e8\u9690\u85cf\u81ea\u52a8\u5b8c\u6210\u7684\u5185\u5bb9<\/p>\n

2\u3001\u5bc4\u5b58\u5668\u5185\u5bb9\u7684\u4fdd\u62a4 \u8fdb\u6808\u6307\u4ee4<\/p>\n

2\u3001\u4e2d\u65ad\u670d\u52a1<\/h5>\n

1\u3001 \u5bf9\u4e0d\u540c\u7684I\/O\u8bbe\u5907\u5177\u6709\u4e0d\u540c\u5185\u5bb9\u7684\u8bbe\u5907\u670d\u52a1<\/p>\n

3\u3001\u6062\u590d\u73b0\u573a<\/h5>\n

1\u3001\u51fa\u6808\u6307\u4ee4<\/p>\n

4\u3001\u4e2d\u65ad\u8fd4\u56de<\/h5>\n

1\u3001\u4e2d\u65ad\u8fd4\u56de\u6307\u4ee4<\/p>\n

2\u3001\u5355\u91cd\u4e2d\u65ad\u548c\u591a\u91cd\u4e2d\u65ad<\/h4>\n

1\u3001\u5355\u91cd\u4e2d\u65ad<\/h5>\n

1\u3001\u4e0d\u5141\u8bb8\u4e2d\u65ad<\/strong>\u73b0\u884c\u7684\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f<\/strong><\/p>\n

2\u3001\u591a\u91cd\u4e2d\u65ad<\/h5>\n

1\u3001\u5141\u8bb8\u7ea7\u522b\u66f4\u9ad8<\/strong>\u7684\u4e2d\u65ad<\/strong>\u6e90\uff0c\u4e2d\u65ad\u73b0\u884c\u7684\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f<\/strong><\/p>\n

3\u3001\u5355\u91cd\u4e2d\u65ad\u548c\u591a\u91cd\u4e2d\u65ad\u7684\u670d\u52a1\u7a0b\u5e8f\u6d41\u7a0b<\/h4>\n
1\u3001\u56fe\u793a<\/h5>\n

\"image-20230816105852950\"<\/div><\/p>\n

1\u3001\u5728\u591a\u91cd\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u4e2d\u8bbe\u5907\u670d\u52a1\u662f\u53ef\u4ee5\u5f00\u542f\u7ea7\u522b\u66f4\u9ad8\u7ea7\u7684\u4e2d\u65ad<\/p>\n

4\u3001\u4e3b\u7a0b\u5e8f\u548c\u8bbf\u95ee\u7a0b\u5e8f\u62a2\u5360CPU\u793a\u610f\u56fe<\/h4>\n

1\u3001\u5185\u5bb9<\/p>\n

\"image-20230816110532317\"<\/div><\/p>\n

5.6\u3001DMA\u65b9\u5f0f<\/h2>\n

5.6.1\u3001DMA\u65b9\u5f0f\u7684\u7279\u70b9<\/h3>\n

1\u3001DMA\u548c\u7a0b\u5e8f\u4e2d\u65ad\u4e24\u79cd\u65b9\u5f0f\u7684\u6570\u636e\u901a\u8def<\/h4>\n

\"image-20230816111344908\"<\/div><\/p>\n

2\u3001DMA\u4e0e\u4e3b\u5b58\u4ea4\u6362\u6570\u636e\u7684\u4e09\u79cd\u65b9\u5f0f<\/h4>\n

1\u3001\u505c\u6b62CPU\u8bbf\u95ee\u4e3b\u5b58<\/h5>\n

1\u3001\u63a7\u5236\u7b80\u5355<\/p>\n

2\u3001CPU\u5904\u4e8e\u4e0d\u5de5\u4f5c\u72b6\u6001\u6216\u4fdd\u6301\u72b6\u6001<\/p>\n

3\u3001CPU\u653e\u5f03\u603b\u7ebf\u548c\u8bbf\u95ee\u4e3b\u5b58\u72b6\u6001<\/p>\n

4\u3001\u5e76\u4e0d\u80fd\u5145\u5206\u53d1\u6325CPU\u5bf9\u4e3b\u5b58\u7684\u5229\u7528\u7387<\/p>\n

5\u3001\u56fe\u793a<\/p>\n

\"image-20230816111743985\"<\/div><\/p>\n
2\u3001\u5468\u671f\u632a\u7528\uff08\u5468\u671f\u7a83\u53d6\uff09<\/h5>\n

1\u3001\u5468\u671f\u662f\u6307\u8bbf\u5b58\u5468\u671f<\/p>\n

2\u3001DMA\u8bbf\u95ee\u4e3b\u5b58\u6709\u4e09\u79cd\u53ef\u80fd<\/p>\n

\"image-20230816112040942\"<\/div><\/p>\n

3\u3001\u56fe\u793a<\/p>\n

\"image-20230816112224023\"<\/div><\/p>\n
3\u3001DMA\u4e0eCPU\u4ea4\u66ff\u8bbf\u95ee<\/h5>\n

1\u3001CPU\u5de5\u4f5c\u5468\u671f<\/p>\n

\"image-20230816112444424\"<\/div><\/p>\n

2\u3001\u56fe\u793a<\/p>\n

\"image-20230816112435765\"<\/div><\/p>\n

5.6.2\u3001DMA\u63a5\u53e3\u7684\u529f\u80fd\u548c\u7ec4\u6210<\/h3>\n

1\u3001DMA\u63a5\u53e3\u529f\u80fd<\/h4>\n

1\u3001\u5411CPU\u7533\u8bf7<\/strong>DMA\u4f20\u9001<\/p>\n

2\u3001\u5904\u7406\u603b\u7ebf\u63a7\u5236\u6743\u7684\u8f6c\u4ea4<\/strong><\/p>\n

3\u3001\u7ba1\u7406\u7cfb\u7edf\u603b\u7ebf\u3001\u63a7\u5236<\/strong>\u6570\u636e\u4f20\u9001<\/p>\n

4\u3001\u786e\u5b9a\u6570\u636e\u4f20\u9001\u7684\u9996\u5730\u5740\u548c\u957f\u5ea6\uff0c\u4fee\u6b63\u4f20\u9001\u8fc7\u7a0b\u4e2d\u7684\u6570\u636e\u5730\u5740<\/strong>\u548c\u957f\u5ea6<\/strong><\/p>\n

5\u3001DMA\u4f20\u9001\u7ed3\u675f\u65f6\uff0c\u7ed9\u51fa\u64cd\u4f5c\u5b8c\u6210\u4fe1\u53f7<\/strong><\/p>\n

2\u3001DMA\u63a5\u53e3\u7ec4\u6210<\/h4>\n

1\u3001AR\uff1a\u5730\u5740\u5bc4\u5b58\u5668<\/p>\n

2\u3001WC\uff1a\u8ba1\u6570\u5668\uff08\u7528\u4e8e\u8ba1\u7b97\u6570\u636e\u7684\u5927\u5c0f\uff09<\/p>\n

3\u3001BR\uff1a\u6570\u636e\u7f13\u51b2\u5668.<\/p>\n

4\u3001DAR\uff1a\u8bbe\u5907\u5730\u5740\u5bc4\u5b58\u5668<\/p>\n

5\u3001DREQ\uff1a\u8bbe\u5907\u8bf7\u6c42<\/p>\n

6\u3001DACK\uff1a\u5e94\u7b54\u4fe1\u53f7<\/p>\n

7\u3001HRQ\uff1a\u603b\u7ebf\u8bf7\u6c42\u4fe1\u53f7<\/p>\n

8\u3001HLDA\uff1a\u5e94\u7b54\u4fe1\u53f7<\/p>\n

\"image-20230816114450362\"<\/div><\/p>\n

9\u3001\u2460AR\u53d1\u9001\u5730\u5740\u8bf7\u6c42\u7ed9\u4e3b\u5b58 \u2461AR\u3001WC\u3001DRA\u3001BR\u901a\u8fc7\u6570\u636e\u7ebf\u4f20\u9001\u6240\u9700\u7684\u5185\u5bb9\u7ed9CPU\uff1bIO\u8bbe\u5907\u5c06\u4f20\u8f93\u6570\u636e\u53d1\u7ed9BR\u7684\u540c\u65f6\uff0c\u5411DMA\u903b\u8f91\u63a7\u5236\u5668\u53d1\u9001\u8bf7\u6c42\u4fe1\u53f7\uff0cDMA\u903b\u8f91\u63a7\u5236\u5668\u7ed9CPU\u53d1\u9001\u603b\u7ebf\u8bf7\u6c42\u4fe1\u53f7\uff0cCPU\u901a\u8fc7HLDA\u53d1\u9001\u54cd\u5e94\u4fe1\u53f7\uff0cDMA\u903b\u8f91\u63a7\u5236\u5668\u901a\u8fc7DACK\u54cd\u5e94\u8bbe\u5907\uff1b\u5f53WC\u8ba1\u6570\u5668\u6ea2\u51fa\u65f6\uff0c\u4f1a\u53d1\u9001\u6ea2\u51fa\u4fe1\u53f7\u7ed9\u4e2d\u65ad\u673a\u6784\uff0c\u4e2d\u65ad\u673a\u6784\u5411CPU\u53d1\u9001\u4e2d\u65ad\u4fe1\u53f7<\/p>\n

5.6.3\u3001DMA\u7684\u5de5\u4f5c\u8fc7\u7a0b<\/h3>\n

1\u3001DMA\u4f20\u9001\u8fc7\u7a0b<\/h4>\n

\u9884\u5904\u7406\u3001\u6570\u636e\u4f20\u9001\u3001\u540e\u5904\u7406<\/p>\n

1\u3001\u9884\u5904\u7406<\/h5>\n

1\u3001\u6570\u636e\u4f20\u8f93\u4e4b\u524d\u6240\u9700\u8981\u505a\u7684\u4e00\u4e9b\u51c6\u5907<\/p>\n

2\u3001\u4f8b\u5982\u901a\u8fc7\u51e0\u6761\u8f93\u5165\u8f93\u51fa\u7684\u6307\u4ee4\u9884\u7f6e<\/p>\n

3\u3001\u901a\u77e5DMA\u63a7\u5236\u903b\u8f91\u4f20\u9001\u65b9\u5411\uff08\u5165\/\u51fa\uff09<\/p>\n

4\u3001\u8bbe\u5907\u5730\u5740\u2014DMA\u7684DAR<\/p>\n

5\u3001\u4e3b\u5b58\u5730\u5740\u2014DMA\u7684AR<\/p>\n

6\u3001\u4f20\u9001\u6570\u636e\u4e2a\u6570\u2014DMA\u7684WC<\/p>\n

2\u3001DMA\u4f20\u9001\u8fc7\u7a0b\u793a\u610f\u56fe<\/h5>\n

\"image-20230816115528965\"<\/div><\/p>\n
3\u3001\u6570\u636e\u4f20\u9001\u8fc7\u7a0b\uff08\u8f93\u5165\uff09<\/h5>\n

\"image-20230816120005177\"<\/div><\/p>\n
4\u3001\u6570\u636e\u4f20\u9001\u8fc7\u7a0b\uff08\u8f93\u51fa\uff09<\/h5>\n

\"image-20230816120313238\"<\/div><\/p>\n
5\u3001\u540e\u5904\u7406<\/h5>\n

1\u3001\u6821\u9a8c\u9001\u5165\u4e3b\u5b58\u7684\u6570\u662f\u5426\u6b63\u786e<\/p>\n

2\u3001\u662f\u5426\u7ee7\u7eed\u7528DMA<\/p>\n

3\u3001\u6d4b\u8bd5\u4f20\u9001\u8fc7\u7a0b\u662f\u5426\u6b63\u786e\uff0c\u9519\u5219\u8f6c\u8bca\u65ad\u7a0b\u5e8f<\/p>\n

4\u3001\u7531\u4e2d\u65ad\u8bbf\u95ee\u7a0b\u5e8f\u5b8c\u6210<\/strong><\/p>\n

2\u3001DMA\u63a5\u53e3\u4e0e\u7cfb\u7edf\u7684\u8fde\u63a5\u65b9\u5f0f<\/h4>\n
1\u3001\u5177\u6709\u516c\u5171\u8bf7\u6c42\u7ebf\u7684DMA\u8bf7\u6c42<\/h5>\n

\"image-20230816120725108\"<\/div><\/p>\n
2\u3001\u72ec\u7acb\u7684DMA\u8bf7\u6c42<\/h5>\n

\"image-20230816120841473\"<\/div><\/p>\n

3\u3001DMA\u65b9\u5f0f\u4e0e\u7a0b\u5e8f\u4e2d\u65ad\u65b9\u5f0f\u7684\u6bd4\u8f83<\/h4>\n

1\u3001\u6bd4\u8f83\u56fe<\/p>\n

\"image-20230818203631916\"<\/div><\/p>\n

5.6.4\u3001DMA\u63a5\u53e3\u7684\u7c7b\u578b<\/h3>\n

1\u3001\u9009\u62e9\u6027<\/h4>\n

1\u3001\u5728\u7269\u7406\u4e0a<\/strong>\u8fde\u63a5\u591a\u4e2a<\/strong>\u8bbe\u5907<\/p>\n

2\u3001\u5728\u903b\u8f91\u4e0a<\/strong>\u53ea\u5141\u8bb8\u8fde\u63a5\u4e00\u4e2a<\/strong>\u8bbe\u5907<\/p>\n

3\u3001\u7535\u8def\u56fe<\/p>\n

\"image-20230818203900608\"<\/div><\/p>\n

2\u3001\u591a\u8def\u578b<\/h4>\n

1\u3001\u5728\u7269\u7406\u4e0a\u5141\u8bb8\u8fde\u63a5\u4ef6\u591a\u4e2a\u8bbe\u5907<\/p>\n

2\u3001\u5728\u903b\u8f91\u5220\u5141\u8bb8\u8fde\u63a5\u591a\u4e2a\u8bbe\u5907\u540c\u65f6\u5de5\u4f5c<\/p>\n

3\u3001\u56fe\u793a<\/p>\n

\"image-20230818204129154\"<\/div><\/p>\n

?3\u3001\u591a\u8def\u578bDMA\u63a5\u53e3\u7684\u5de5\u4f5c\u539f\u7406<\/h4>\n

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