{"id":48081,"date":"2023-09-27T09:28:10","date_gmt":"2023-09-27T01:28:10","guid":{"rendered":"\/\/www.dealsbon.com\/?p=48081"},"modified":"2023-09-27T09:28:10","modified_gmt":"2023-09-27T01:28:10","slug":"dfsbdzdkp","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/48081.html","title":{"rendered":"DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u79d1\u666e"},"content":{"rendered":"<p>&emsp;&emsp;DMA\uff08Direct Memory Access\uff09\u662f\u4e00\u79cd\u5feb\u901f\u7684\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u5728\u4e3b\u673a\u4e0e\u5916\u8bbe\u4e4b\u95f4\u5b9e\u73b0\u76f4\u63a5\u7684\u6570\u636e\u4f20\u8f93\u3002DMA\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u4f20\u8f93\uff0c\u5177\u6709\u66f4\u5feb\u7684\u4f20\u8f93\u901f\u5ea6\u548c\u66f4\u9ad8\u7684\u6548\u7387\u3002<\/p>\n<p>&emsp;&emsp;\u672c\u6587\u5c06\u4ecb\u7ecdDMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u539f\u7406\u548c\u4f18\u70b9\uff0c\u4ee5\u53ca\u5982\u4f55\u6b63\u786e\u4f7f\u7528DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u3002<\/p>\n<h2 style=\"text-align: center;\">DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u539f\u7406<\/h2>\n<p>&emsp;&emsp;DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u539f\u7406\u662f\u901a\u8fc7\u4e00\u4e2a\u79f0\u4e3aDMA\u63a7\u5236\u5668\u7684\u786c\u4ef6\u8bbe\u5907\u6765\u5b9e\u73b0\u7684\u3002DMA\u63a7\u5236\u5668\u53ef\u4ee5\u76f4\u63a5\u4ece\u4e3b\u673a\u5b58\u50a8\u5668\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230\u5916\u8bbe\u8bbe\u5907\uff0c\u4ece\u800c\u5b9e\u73b0\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u4f20\u8f93\u3002<\/p>\n<p>&emsp;&emsp;DMA\u63a7\u5236\u5668\u53ef\u4ee5\u5206\u4e3a\u4e24\u79cd\uff1a\u5355\u5411DMA\u63a7\u5236\u5668\u548c\u53cc\u5411DMA\u63a7\u5236\u5668\u3002\u5355\u5411DMA\u63a7\u5236\u5668\u53ea\u80fd\u4ece\u4e3b\u673a\u5b58\u50a8\u5668\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u800c\u53cc\u5411DMA\u63a7\u5236\u5668\u5219\u53ef\u4ee5\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u4f20\u8f93\uff0c\u53ef\u4ee5\u4ece\u4e3b\u673a\u5b58\u50a8\u5668\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u5c06\u6570\u636e\u5199\u5165\u4e3b\u673a\u5b58\u50a8\u5668\u3002<\/p>\n<h2 style=\"text-align: center;\">DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u4f18\u70b9<\/h2>\n<p>&emsp;&emsp;DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u4f18\u70b9\u975e\u5e38\u660e\u663e\uff0c\u5b83\u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u901f\u5ea6\u548c\u6548\u7387\u3002<\/p>\n<p>&emsp;&emsp;\u7531\u4e8eDMA\u63a7\u5236\u5668\u53ef\u4ee5\u76f4\u63a5\u4ece\u4e3b\u673a\u5b58\u50a8\u5668\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u56e0\u6b64\u53ef\u4ee5\u5927\u5927\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u4ece\u800c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002\u6b64\u5916\uff0cDMA\u63a7\u5236\u5668\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u66f4\u9ad8\u7684\u4f20\u8f93\u901f\u5ea6\uff0c\u8fd9\u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<h2 style=\"text-align: center;\">\u5982\u4f55\u6b63\u786e\u4f7f\u7528DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u6570\u636e<\/h2>\n<p>&emsp;&emsp;\u4f7f\u7528DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u975e\u5e38\u7b80\u5355\uff0c\u9996\u5148\u9700\u8981\u5b89\u88c5\u4e00\u4e2aDMA\u63a7\u5236\u5668\uff0c\u7136\u540e\u5c06\u5176\u8fde\u63a5\u5230\u4e3b\u673a\u5b58\u50a8\u5668\u548c\u5916\u8bbe\u8bbe\u5907\u3002<\/p>\n<p>&emsp;&emsp;\u63a5\u4e0b\u6765\uff0c\u9700\u8981\u7f16\u5199\u7a0b\u5e8f\u6765\u63a7\u5236DMA\u63a7\u5236\u5668\uff0c\u8bbe\u7f6eDMA\u63a7\u5236\u5668\u7684\u53c2\u6570\uff0c\u6307\u5b9a\u6570\u636e\u4f20\u8f93\u7684\u6e90\u5730\u5740\u548c\u76ee\u7684\u5730\u5740\uff0c\u4ee5\u53ca\u6570\u636e\u4f20\u8f93\u7684\u957f\u5ea6\u3002\u6700\u540e\uff0c\u9700\u8981\u542f\u52a8DMA\u63a7\u5236\u5668\uff0c\u8ba9\u5176\u5f00\u59cb\u4f20\u8f93\u6570\u636e\u3002<\/p>\n<p>&emsp;&emsp;\u603b\u4e4b\uff0c\u4f7f\u7528DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u662f\u975e\u5e38\u7b80\u5355\u7684\uff0c\u53ea\u9700\u8981\u5b89\u88c5DMA\u63a7\u5236\u5668\uff0c\u7f16\u5199\u7a0b\u5e8f\uff0c\u8bbe\u7f6e\u53c2\u6570\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u4f20\u8f93\u3002<\/p>\n<h2 style=\"text-align: center;\">\u603b\u7ed3<\/h2>\n<p>&emsp;&emsp;<strong>\u672c\u6587\u4ecb\u7ecd\u4e86DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u539f\u7406\u548c\u4f18\u70b9\uff0c\u4ee5\u53ca\u5982\u4f55\u6b63\u786e\u4f7f\u7528DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u3002<\/strong>DMA\u53d1\u9001\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u901f\u5ea6\u548c\u6548\u7387\uff0c\u800c\u4e14\u4f7f\u7528\u8d77\u6765\u4e5f\u975e\u5e38\u7b80\u5355\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DMA\uff08DirectMemoryAccess\uff09\u662f\u4e00\u79cd\u5feb\u901f\u7684\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u5728\u4e3b\u673a\u4e0e\u5916\u8bbe\u4e4b\u95f4\u5b9e\u73b0\u76f4\u63a5\u7684\u6570\u636e\u4f20\u8f93\u3002DMA\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u4f20\u8f93\uff0c\u5177\u6709\u66f4\u5feb\u7684\u4f20\u8f93\u901f\u5ea6\u548c<\/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-48081","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\/48081"}],"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=48081"}],"version-history":[{"count":0,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/48081\/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=48081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/categories?post=48081"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/tags?post=48081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}