{"id":56786,"date":"2023-10-22T08:33:24","date_gmt":"2023-10-22T00:33:24","guid":{"rendered":"\/\/www.dealsbon.com\/?p=56786"},"modified":"2023-10-22T08:33:24","modified_gmt":"2023-10-22T00:33:24","slug":"dzdyxjrhtgxtxn","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/56786.html","title":{"rendered":"DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\uff1a\u5982\u4f55\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd"},"content":{"rendered":"

  DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u662f\u7535\u8111\u7cfb\u7edf\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u5f71\u54cd\u7740\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/strong>\u672c\u6587\u5c06\u4ecb\u7ecdDMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4ee5\u53ca\u5982\u4f55\u901a\u8fc7\u63a7\u5236DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u6765\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n

\u4ec0\u4e48\u662fDMA\u4e2d\u65ad\u4f18\u5148\u7ea7<\/h2>\n

  DMA\uff08Direct Memory Access\uff09\u4e2d\u65ad\u4f18\u5148\u7ea7\u662f\u6307\u7cfb\u7edf\u4e2dDMA\u63a7\u5236\u5668\u53d1\u51fa\u7684\u4e2d\u65ad\u4f18\u5148\u7ea7\u3002DMA\u63a7\u5236\u5668\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5916\u8bbe\uff0c\u5b83\u53ef\u4ee5\u63a7\u5236\u7cfb\u7edf\u5185\u5b58\u4e0e\u5916\u8bbe\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u5f53DMA\u63a7\u5236\u5668\u53d1\u51fa\u4e2d\u65ad\u65f6\uff0c\u7cfb\u7edf\u4f1a\u6309\u7167DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u987a\u5e8f\u5904\u7406\u8fd9\u4e9b\u4e2d\u65ad\u3002<\/p>\n

\u5982\u4f55\u914d\u7f6eDMA\u4e2d\u65ad\u4f18\u5148\u7ea7<\/h2>\n

  DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u914d\u7f6e\u53ef\u4ee5\u901a\u8fc7\u7cfb\u7edfBIOS\uff08Basic Input\/Output System\uff09\u8fdb\u884c\u8bbe\u7f6e\u3002BIOS\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8f6f\u4ef6\uff0c\u5b83\u53ef\u4ee5\u63a7\u5236\u7cfb\u7edf\u7684\u57fa\u672c\u529f\u80fd\uff0c\u5305\u62ecDMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u8bbe\u7f6e\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u53ef\u4ee5\u901a\u8fc7BIOS\u7684\u8bbe\u7f6e\u6765\u63a7\u5236DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n

\u5982\u4f55\u901a\u8fc7\u63a7\u5236DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u6765\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd<\/h2>\n

  1.\u63d0\u9ad8\u7cfb\u7edf\u5904\u7406\u6548\u7387<\/h3>\n

  DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u8bbe\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u5904\u7406\u6548\u7387\uff0c\u7279\u522b\u662f\u5728\u591a\u4efb\u52a1\u5904\u7406\u65f6\u3002\u901a\u8fc7\u8c03\u6574DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\uff0c\u53ef\u4ee5\u4f7f\u7cfb\u7edf\u5904\u7406\u7684\u4efb\u52a1\u66f4\u52a0\u6709\u5e8f\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5904\u7406\u6548\u7387\u3002<\/p>\n

  2.\u51cf\u5c11\u7cfb\u7edf\u5ef6\u65f6<\/h3>\n

  \u6b63\u786e\u7684DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u8bbe\u7f6e\u53ef\u4ee5\u6709\u6548\u51cf\u5c11\u7cfb\u7edf\u7684\u5ef6\u65f6\u3002\u5f53\u7cfb\u7edf\u4e2d\u591a\u4e2a\u5916\u8bbe\u540c\u65f6\u53d1\u51fa\u4e2d\u65ad\u65f6\uff0cDMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u8bbe\u7f6e\u53ef\u4ee5\u786e\u4fdd\u4f18\u5148\u5904\u7406\u91cd\u8981\u7684\u4e2d\u65ad\uff0c\u4ece\u800c\u51cf\u5c11\u7cfb\u7edf\u7684\u5ef6\u65f6\u3002<\/p>\n

  3.\u63d0\u9ad8\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027<\/h3>\n

  \u6b63\u786e\u7684DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u8bbe\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002\u5f53\u7cfb\u7edf\u4e2d\u591a\u4e2a\u5916\u8bbe\u540c\u65f6\u53d1\u51fa\u4e2d\u65ad\u65f6\uff0cDMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u8bbe\u7f6e\u53ef\u4ee5\u786e\u4fdd\u91cd\u8981\u7684\u4e2d\u65ad\u5f97\u5230\u53ca\u65f6\u5904\u7406\uff0c\u4ece\u800c\u6709\u6548\u964d\u4f4e\u7cfb\u7edf\u7684\u6545\u969c\u7387\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u662f\u7535\u8111\u7cfb\u7edf\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u5f71\u54cd\u7740\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/strong>\u901a\u8fc7\u7cfb\u7edfBIOS\u53ef\u4ee5\u914d\u7f6eDMA\u4e2d\u65ad\u4f18\u5148\u7ea7\uff0c\u6b63\u786e\u7684DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u8bbe\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u5904\u7406\u6548\u7387\uff0c\u51cf\u5c11\u7cfb\u7edf\u5ef6\u65f6\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

DMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u662f\u7535\u8111\u7cfb\u7edf\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u5f71\u54cd\u7740\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecdDMA\u4e2d\u65ad\u4f18\u5148\u7ea7\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4ee5\u53ca\u5982\u4f55\u901a\u8fc7\u63a7\u5236DMA\u4e2d\u65ad<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[305],"class_list":["post-56786","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzjs"],"_links":{"self":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/56786"}],"collection":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/comments?post=56786"}],"version-history":[{"count":0,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/56786\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media?parent=56786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/categories?post=56786"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/tags?post=56786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}