{"id":1059,"date":"2020-08-25T19:26:42","date_gmt":"2020-08-25T20:26:42","guid":{"rendered":"http:\/\/www.linux-tutorial.info\/?page_id=1059"},"modified":"2020-08-25T19:26:42","modified_gmt":"2020-08-25T20:26:42","slug":"arm-processors","status":"publish","type":"page","link":"http:\/\/www.linux-tutorial.info\/?page_id=1059","title":{"rendered":"ARM Processors"},"content":{"rendered":"\n<p><br>The ARM processor implements a low power, high performance 32 bit<br>RISC architecture.<br>It is being widely used in embedded devices such as mobile phones and PDAs (Personal<br>Data Assistants).<br>It has 31 32 bit registers with 16 visible in any mode.<br>Its instructions are simple load and store instructions (load a value from memory,<br>perform an operation and store the result back into memory).<br>One interesting feature it has is that every instruction is conditional.<br>For example, you can test the value of a register and, until you next test for<br>the same condition, you can conditionally execute instructions as and when you like.<br>Another interesting feature is that you can perform arithmetic and shift operations<br>on values as you load them.<br>It operates in several modes, including a system mode that can be entered from user mode<br>via a SWI (software interrupt).<br><br>It is a synthasisable core and ARM (the company) does not itself manufacture<br>processors. Instead the ARM partners (companies such as Intel or LSI for<br>example) implement the ARM architecture in silicon.<br>It allows other processors to be tightly coupled via a co-processor interface and<br>it has several memory management unit variations. These range from simple memory<br>protection schemes to complex page hierarchies.<br><br>\ufffd 1996-1999 David A Rusling <a href=\"\/Misc\/rusling_copyright.html\">copyright notice<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The ARM processor implements a low power, high performance 32 bitRISC architecture.It is being widely used in embedded devices such as mobile phones and PDAs (PersonalData Assistants).It has 31 32 bit registers with 16 visible in any mode.Its instructions are &hellip; <a href=\"http:\/\/www.linux-tutorial.info\/?page_id=1059\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1059","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/1059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1059"}],"version-history":[{"count":1,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/1059\/revisions"}],"predecessor-version":[{"id":1060,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/1059\/revisions\/1060"}],"wp:attachment":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}