{"id":4940,"date":"2014-04-18T11:17:12","date_gmt":"2014-04-18T16:17:12","guid":{"rendered":"httpss:\/\/www.powenko.com\/wordpress\/?p=4940"},"modified":"2014-04-18T11:50:36","modified_gmt":"2014-04-18T16:50:36","slug":"01-check_region-%e7%a2%ba%e8%aa%8d%e5%8d%80%e5%9f%9f","status":"publish","type":"post","link":"https:\/\/www.powenko.com\/wordpress\/?p=4940","title":{"rendered":"01.  check_region \u78ba\u8a8d\u5340\u57df"},"content":{"rendered":"<p>Registering port<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n \/* Registering port *\/\r\n  port = check_region(0x378, 1);    \/\/0x378 \u662f Parallel port \u7684\u4f4d\u7f6e\r\n if (port) {\r\n printk(&quot;parlelport: cannot reserve 0x378\\n&quot;);\r\n result = port;\r\n goto fail;\r\n }\r\n request_region(0x378, 1, &quot;parlelport&quot;);\r\n<\/pre>\n<p><a href=\"httpss:\/\/www.powenko.com\/wordpress\/?attachment_id=4946\" rel=\"attachment wp-att-4946\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4946\" alt=\"Screen Shot 2014-04-18 at 9.22.09 AM\" src=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM.jpg\" width=\"462\" height=\"136\" srcset=\"https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM.jpg 462w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM-300x88.jpg 300w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM-316x93.jpg 316w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM-120x35.jpg 120w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM-210x62.jpg 210w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.09-AM-140x41.jpg 140w\" sizes=\"(max-width: 462px) 100vw, 462px\" \/><\/a><\/p>\n<p><a href=\"httpss:\/\/www.powenko.com\/wordpress\/?attachment_id=4948\" rel=\"attachment wp-att-4948\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4948\" alt=\"Screen Shot 2014-04-18 at 9.22.53 AM\" src=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM.jpg\" width=\"326\" height=\"169\" srcset=\"https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM.jpg 326w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM-300x156.jpg 300w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM-316x164.jpg 316w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM-120x62.jpg 120w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM-210x109.jpg 210w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/Screen-Shot-2014-04-18-at-9.22.53-AM-140x73.jpg 140w\" sizes=\"(max-width: 326px) 100vw, 326px\" \/><\/a><\/p>\n<p><a href=\"httpss:\/\/www.powenko.com\/wordpress\/?attachment_id=4951\" rel=\"attachment wp-att-4951\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4951\" alt=\"200px-25_Pin_D-sub_pinout.svg\" src=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/200px-25_Pin_D-sub_pinout.svg_.png\" width=\"200\" height=\"143\" srcset=\"https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/200px-25_Pin_D-sub_pinout.svg_.png 200w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/200px-25_Pin_D-sub_pinout.svg_-120x86.png 120w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2014\/04\/200px-25_Pin_D-sub_pinout.svg_-140x100.png 140w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a><\/p>\n<p>\u90a3  COM ports \u5728 PC-compatible are typically \u5b9a\u7fa9\u662f:<br \/>\nCOM1: I\/O port 0x3F8, IRQ 4<br \/>\nCOM2: I\/O port 0x2F8, IRQ 3<br \/>\nCOM3: I\/O port 0x3E8, IRQ 4<br \/>\nCOM4: I\/O port 0x2E8, IRQ 3<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Registering port \/* Registering port *\/ port = check_re [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4946,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[203],"tags":[],"class_list":["post-4940","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ch04-"],"_links":{"self":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4940"}],"collection":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4940"}],"version-history":[{"count":5,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4940\/revisions"}],"predecessor-version":[{"id":4965,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4940\/revisions\/4965"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/4946"}],"wp:attachment":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}