keilc51 startup代码解释 .rar_keilc51_startup_单片机开发_嵌入式/单片机/硬件编程下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/625f237c2cc14f6636336dfe/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/625f237c2cc14f6636336dfe/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">欢迎光临　<span class="_ _0"></span>下岗农民　<span class="_ _0"></span>主页</div><div class="t m0 x1 h3 y2 ff1 fs1 fc1 sc0 ls0 ws1">；－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－</div><div class="t m0 x1 h3 y3 ff1 fs1 fc1 sc0 ls0 ws1">；　　ＳＴＡＲＴＵＰ．Ａ５１：　　用户上电初始化程序</div><div class="t m0 x1 h3 y4 ff1 fs1 fc1 sc0 ls0 ws1">；－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－</div><div class="t m0 x1 h3 y5 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y6 ff1 fs1 fc1 sc0 ls0 ws1">；　　用户定义需上电初始化的内存空间</div><div class="t m0 x1 h3 y7 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y8 ff1 fs1 fc1 sc0 ls0 ws1">；　　使用以下ＥＱＵ命令可定义在ＣＰＵ复位时需用０进行初始化的内存空间</div><div class="t m0 x1 h3 y9 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 ya ff1 fs1 fc1 sc0 ls0 ws1">；　<span class="_ _1"> </span>　<span class="_ _2"> </span>；　ＩＤＡＴＡ　存储器的空间的绝对起始地址总是０．<span class="_ _3"></span>；　<span class="_ _1"> </span>　<span class="_ _2"> </span>；　ＩＤＡＴＡ　存储器的空间的绝对起始地址总是０．</div><div class="t m0 x1 h3 yb ff1 fs1 fc0 sc0 ls0 ws1">ＩＤＡＴＡＬＥＮ　<span class="_ _4"></span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">８０Ｈ<span class="_ _5"></span>８０Ｈ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc1">；　需用０进行初始化的ＩＤＡＴＡ存储器空间的字节数</span></span></span></span></span></div><div class="t m0 x1 h3 yc ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 yd ff1 fs1 fc0 sc0 ls0 ws1">ＸＤＡＴＡＳＴＡＲＴ　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０Ｈ<span class="_ _8"></span>０Ｈ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc1">；　ＸＤＡＴＡ存储器空间的绝对起始地址</span></span></span></span></span></div><div class="t m0 x1 h3 ye ff1 fs1 fc0 sc0 ls0 ws1">ＸＤＡＴＡＬＥＮ　<span class="_ _4"></span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０Ｈ<span class="_ _8"></span>０Ｈ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc1">；　需用０进行初始化的ＸＤＡＴＡ存储器的空间字节数．</span></span></span></span></span></div><div class="t m0 x1 h3 yf ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y10 ff1 fs1 fc0 sc0 ls0 ws1">ＰＤＡＴＡＳＴＡＲＴ　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０Ｈ<span class="_ _8"></span>０Ｈ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc1">；　ＰＤＡＴＡ存储器的空间的绝对起始地址</span></span></span></span></span></div><div class="t m0 x1 h3 y11 ff1 fs1 fc0 sc0 ls0 ws1">ＰＤＡＴＡＬＥＮ　<span class="_ _4"></span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０Ｈ<span class="_ _8"></span>０Ｈ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc1">；　需用０进行初始化的ＰＤＡＴＡ存储器的空间字节数．</span></span></span></span></span></div><div class="t m0 x1 h3 y12 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y13 ff1 fs1 fc1 sc0 ls0 ws1">；　　注意：　　　ＩＤＡＴＡ　存储器的空间在物理上包括了８０５１单片机的ＤＡＴＡ和ＢＩＴ存储器空间．</div><div class="t m0 x1 h3 y14 ff1 fs1 fc1 sc0 ls0 ws1">；　　　　　　　　　　<span class="_"> </span>听<span class="_"> </span>说<span class="_"> </span>至少要保证与Ｃ５１编译器运行库有关的存储器的空间进行０初始化<span class="_"> </span>不知是否</div><div class="t m0 x1 h3 y15 ff1 fs1 fc1 sc0 ls0 ws1">；－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－</div><div class="t m0 x1 h3 y16 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y17 ff1 fs1 fc1 sc0 ls0 ws1">；　　再入函数模拟初始化</div><div class="t m0 x1 h3 y18 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y19 ff1 fs1 fc1 sc0 ls0 ws1">；　　以下用ＥＱＵ指令定义了再入函数模拟堆栈指针的初始化</div><div class="t m0 x1 h3 y1a ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y1b ff1 fs1 fc1 sc0 ls0 ws1">；　　使用ＳＭＡＬＬ存储器模式时再入函数的堆栈空间<span class="_"> </span>．</div><div class="t m0 x1 h3 y1c ff1 fs1 fc0 sc0 ls0 ws1">ＩＢＰＳＴＡＣＫ　<span class="_ _4"></span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０<span class="_ _4"></span>０<span class="fc0">　<span class="_ _4"></span>　<span class="_ _1"> </span><span class="fc1">；　使用ＳＭＡＬＬ存储器模式再入函数时将其设置成１．</span></span></span></span></span></div><div class="t m0 x1 h3 y1d ff1 fs1 fc0 sc0 ls0 ws1">ＩＢＰＳＴＡＣＫＴＯＰ　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０ＦＦＨ<span class="_ _9"></span>０ＦＦＨ＋１<span class="fc0">　<span class="_ _4"></span>　<span class="_ _a"> </span><span class="fc1">；　将堆栈顶设置为最高地址＋１．</span></span></span></span></span></div><div class="t m0 x1 h3 y1e ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y1f ff1 fs1 fc1 sc0 ls0 ws1">；　　使用ＬＡＲＧＥ存储器模式时再入函数的堆栈空间．　<span class="_ _b"></span>；　　使用ＬＡＲＧＥ存储器模式时再入函数的堆栈空间．　</div><div class="t m0 x1 h3 y20 ff1 fs1 fc0 sc0 ls0 ws1">ＸＢＰＳＴＡＣＫ　<span class="_ _4"></span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０<span class="_ _4"></span>０<span class="fc0">　<span class="_ _4"></span>　<span class="_ _1"> </span><span class="fc1">；　使用ＬＡＲＧＥ存储器模式再入函数时将其设置成１．</span></span></span></span></span></div><div class="t m0 x1 h3 y21 ff1 fs1 fc0 sc0 ls0 ws1">ＸＢＰＳＴＡＣＫＴＯＰ　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０ＦＦＦＦＨ<span class="_ _c"></span>０ＦＦＦＦＨ＋１<span class="fc1">；　将堆栈顶设置为最高地址＋１．</span></span></span></span></div><div class="t m0 x1 h3 y22 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y23 ff1 fs1 fc1 sc0 ls0 ws1">；　使用ＣＯＭＰＡＣＴ存储器模式时再入函数的堆栈空间．　<span class="_ _d"></span>；　使用ＣＯＭＰＡＣＴ存储器模式时再入函数的堆栈空间．　</div><div class="t m0 x1 h3 y24 ff1 fs1 fc0 sc0 ls0 ws1">ＰＢＰＳＴＡＣＫ　<span class="_ _4"></span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０<span class="_ _4"></span>０<span class="fc0">　<span class="_ _4"></span>　<span class="_ _1"> </span><span class="fc1">；　使用ＣＯＭＰＡＣＴ存储器模式再入函数时将其设置成１．</span></span></span></span></span></div><div class="t m0 x1 h3 y25 ff1 fs1 fc0 sc0 ls0 ws1">ＰＢＰＳＴＡＣＫＴＯＰ　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０ＦＦＦＦＨ<span class="_ _c"></span>０ＦＦＦＦＨ＋１<span class="fc1">；　将堆栈顶设置为最高地址＋１．</span></span></span></span></div><div class="t m0 x1 h3 y26 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y27 ff1 fs1 fc1 sc0 ls0 ws1">；－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－</div><div class="t m0 x1 h3 y28 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y29 ff1 fs1 fc1 sc0 ls0 ws1">；　　使用ＣＯＭＰＡＣＴ存储器模式时６４Ｋ字节ＸＤＡＴＡ存储器空间的分页定义</div><div class="t m0 x1 h3 y2a ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y2b ff1 fs1 fc1 sc0 ls0 ws1">；　　以下用ＥＱＵ指令定义ＰＤＡＴＡ类型变量在ＸＤＡＴＡ存储器空间的页地址</div><div class="t m0 x1 h3 y2c ff1 fs1 fc1 sc0 ls0 ws1">；　　使用ＥＱＵ指令定义ＰＦＡＧＥ时必须与Ｌ５１连接定位器ＰＤＡＴＡ指令的控制参数一致</div><div class="t m0 x1 h3 y2d ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y2e ff1 fs1 fc0 sc0 ls0 ws1">ＰＰＡＧＥＥＮＡＢＬＥ　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０<span class="_ _4"></span>０<span class="fc0">　<span class="_ _4"></span>　<span class="_ _1"> </span><span class="fc1">；　使用ＰＤＡＴＡ类型变量时将其设置成１．</span></span></span></span></span></div><div class="t m0 x1 h3 y2f ff1 fs1 fc0 sc0 ls0 ws1">ＰＰＡＧＥ　<span class="_"> </span>　<span class="_ _9"></span>　<span class="_"> </span>　<span class="_ _2"> </span><span class="fc2">ＥＱＵ<span class="_ _5"></span>ＥＱＵ<span class="fc0">　<span class="_ _4"></span>　<span class="_ _6"> </span><span class="fc2">０<span class="_ _4"></span>０<span class="fc0">　<span class="_ _4"></span>　<span class="_ _1"> </span><span class="fc1">；　定义页号．</span></span></span></span></span></div><div class="t m0 x1 h3 y30 ff1 fs1 fc1 sc0 ls0 ws1">；</div><div class="t m0 x1 h3 y31 ff1 fs1 fc1 sc0 ls0 ws1">；－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－</div><div class="t m0 x1 h3 y32 ff1 fs1 fc0 sc0 ls0 ws1">　<span class="_ _2"> </span>　<span class="_ _2"> </span>ＮＡＭＥ<span class="_ _e"></span>　<span class="_ _2"> </span>　<span class="_ _2"> </span>ＮＡＭＥ　<span class="_ _f"> </span>？Ｃ＿ＳＴＡＲＴＵＰ<span class="_ _10"></span>　<span class="_ _f"> </span>？Ｃ＿ＳＴＡＲＴＵＰ　<span class="_ _4"></span>　<span class="_ _7"> </span><span class="fc1">；　模块名为<span class="_"> </span>？Ｃ＿ＳＴＡＵＴＵＰ　<span class="_ _11"></span>；　模块名为<span class="_"> </span>？Ｃ＿ＳＴＡＵＴＵＰ　</span></div><div class="t m0 x1 h3 y33 ff1 fs1 fc0 sc0 ls0 ws1">？Ｃ＿Ｃ５１ＳＴＡＲＴＵＰ　<span class="_"> </span>ＳＥＧＭＥＮＴ<span class="_ _12"></span>　<span class="_"> </span>ＳＥＧＭＥＮＴ　　　ＣＯＤＥ　<span class="_ _a"> </span>　<span class="_ _5"></span>　<span class="_ _a"> </span>　<span class="_ _2"> </span><span class="fc1">；　代码</span></div><div class="t m0 x1 h3 y34 ff1 fs1 fc0 sc0 ls0 ws1">？ＳＴＡＣＫ　<span class="_ _a"> </span>　<span class="_ _2"> </span>ＳＥＧＭＥＮＴ<span class="_ _13"></span>　<span class="_ _a"> </span>　<span class="_ _2"> </span>ＳＥＧＭＥＮＴ　　　ＩＤＡＴＡ　　<span class="_ _8"></span>　　<span class="_ _2"> </span><span class="fc1">；　堆栈</span></div><div class="t m0 x1 h3 y35 ff1 fs1 fc0 sc0 ls0 ws1">　<span class="_ _2"> </span>　<span class="_ _2"> </span>ＲＳＥＧ<span class="_ _e"></span>　<span class="_ _2"> </span>　<span class="_ _2"> </span>ＲＳＥＧ　<span class="_ _f"> </span>？ＳＴＡＣＫ<span class="_ _12"></span>　<span class="_ _f"> </span>？ＳＴＡＣＫ　<span class="_ _a"> </span>　<span class="_ _5"></span>　<span class="_ _a"> </span>　<span class="_ _2"> </span><span class="fc1">；　堆栈</span></div><div class="t m0 x1 h2 y36 ff1 fs0 fc0 sc0 ls0 ws1">随便打进的汉字<span class="_"> </span>有用就用吧<span class="_"> </span>有错就帮我改吧</div></div><div class="pi" data-data='{"ctm":[1.610738,0.000000,0.000000,1.610738,0.000000,0.000000]}'></div></div> </body> </html>