00000021.htm

来自「水木社区 embeded 版精华区 下载」· HTM 代码 · 共 144 行

HTM
144 行
字号 
<?xml version="1.0" encoding="gb2312"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"/><title>单片机与TCP/IP网络（三）               jacobw </title></head><body><center><h1>BBS 水木清华站∶精华区</h1></center><a name="top"></a>发信人:&nbsp;turbolinux&nbsp;(hoho~神啊，救救我吧...),&nbsp;信区:&nbsp;Embedded&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />标&nbsp;&nbsp;题:&nbsp;单片机与TCP/IP网络（三）&nbsp;<br />发信站:&nbsp;BBS&nbsp;水木清华站&nbsp;(Fri&nbsp;Jul&nbsp;13&nbsp;00:31:05&nbsp;2001)&nbsp;<br />&nbsp;<br />&nbsp;单片机与TCP/IP网络&nbsp;<br />--版主&nbsp;老古&nbsp;&nbsp;<br />&nbsp;<br />（三）ISA总线接口定义&nbsp;<br />&nbsp;<br />&nbsp;<br />------------------------------------------------------------------------&nbsp;<br />--------&nbsp;<br />&nbsp;<br />ISA&nbsp;ISA=Industry&nbsp;Standard&nbsp;Architecture&nbsp;（isa总线）&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;<br />Pin&nbsp;Name&nbsp;Description&nbsp;&nbsp;<br />引脚&nbsp;名称&nbsp;含义&nbsp;<br />&nbsp;<br />A1&nbsp;/I/O&nbsp;CH&nbsp;CK&nbsp;I/O&nbsp;channel&nbsp;check;&nbsp;active&nbsp;low=parity&nbsp;error&nbsp;&nbsp;<br />A2&nbsp;D7&nbsp;Data&nbsp;bit&nbsp;7&nbsp;&nbsp;<br />A3&nbsp;D6&nbsp;Data&nbsp;bit&nbsp;6&nbsp;&nbsp;<br />A4&nbsp;D5&nbsp;Data&nbsp;bit&nbsp;5&nbsp;&nbsp;<br />A5&nbsp;D4&nbsp;Data&nbsp;bit&nbsp;4&nbsp;&nbsp;<br />A6&nbsp;D3&nbsp;Data&nbsp;bit&nbsp;3&nbsp;&nbsp;<br />A7&nbsp;D2&nbsp;Data&nbsp;bit&nbsp;2&nbsp;&nbsp;<br />A8&nbsp;D1&nbsp;Data&nbsp;bit&nbsp;1&nbsp;&nbsp;<br />A9&nbsp;D0&nbsp;Data&nbsp;bit&nbsp;0&nbsp;&nbsp;<br />A10&nbsp;I/O&nbsp;CH&nbsp;RDY&nbsp;I/O&nbsp;Channel&nbsp;ready,&nbsp;pulled&nbsp;low&nbsp;to&nbsp;lengthen&nbsp;memory&nbsp;cycles&nbsp;&nbsp;<br />&nbsp;<br />A11&nbsp;AEN&nbsp;Address&nbsp;enable;&nbsp;active&nbsp;high&nbsp;when&nbsp;DMA&nbsp;controls&nbsp;bus&nbsp;&nbsp;<br />A12&nbsp;A19&nbsp;Address&nbsp;bit&nbsp;19&nbsp;&nbsp;<br />A13&nbsp;A18&nbsp;Address&nbsp;bit&nbsp;18&nbsp;&nbsp;<br />A14&nbsp;A17&nbsp;Address&nbsp;bit&nbsp;17&nbsp;&nbsp;<br />A15&nbsp;A16&nbsp;Address&nbsp;bit&nbsp;16&nbsp;&nbsp;<br />A16&nbsp;A15&nbsp;Address&nbsp;bit&nbsp;15&nbsp;&nbsp;<br />A17&nbsp;A14&nbsp;Address&nbsp;bit&nbsp;14&nbsp;&nbsp;<br />A18&nbsp;A13&nbsp;Address&nbsp;bit&nbsp;13&nbsp;&nbsp;<br />A19&nbsp;A12&nbsp;Address&nbsp;bit&nbsp;12&nbsp;&nbsp;<br />A20&nbsp;A11&nbsp;Address&nbsp;bit&nbsp;11&nbsp;&nbsp;<br />A21&nbsp;A10&nbsp;Address&nbsp;bit&nbsp;10&nbsp;&nbsp;<br />A22&nbsp;A9&nbsp;Address&nbsp;bit&nbsp;9&nbsp;&nbsp;<br />A23&nbsp;A8&nbsp;Address&nbsp;bit&nbsp;8&nbsp;&nbsp;<br />A24&nbsp;A7&nbsp;Address&nbsp;bit&nbsp;7&nbsp;&nbsp;<br />A25&nbsp;A6&nbsp;Address&nbsp;bit&nbsp;6&nbsp;&nbsp;<br />A26&nbsp;A5&nbsp;Address&nbsp;bit&nbsp;5&nbsp;&nbsp;<br />A27&nbsp;A4&nbsp;Address&nbsp;bit&nbsp;4&nbsp;&nbsp;<br />A28&nbsp;A3&nbsp;Address&nbsp;bit&nbsp;3&nbsp;&nbsp;<br />A29&nbsp;A2&nbsp;Address&nbsp;bit&nbsp;2&nbsp;&nbsp;<br />A30&nbsp;A1&nbsp;Address&nbsp;bit&nbsp;1&nbsp;&nbsp;<br />A31&nbsp;A0&nbsp;Address&nbsp;bit&nbsp;0&nbsp;&nbsp;<br />B1&nbsp;GND&nbsp;Ground&nbsp;&nbsp;<br />B2&nbsp;RESET&nbsp;Active&nbsp;high&nbsp;to&nbsp;reset&nbsp;or&nbsp;initialize&nbsp;system&nbsp;logic&nbsp;&nbsp;<br />B3&nbsp;+5V&nbsp;+5&nbsp;VDC&nbsp;&nbsp;<br />B4&nbsp;IRQ2&nbsp;Interrupt&nbsp;Request&nbsp;2&nbsp;&nbsp;<br />B5&nbsp;-5VDC&nbsp;-5&nbsp;VDC&nbsp;&nbsp;<br />B6&nbsp;DRQ2&nbsp;DMA&nbsp;Request&nbsp;2&nbsp;&nbsp;<br />B7&nbsp;-12VDC&nbsp;-12&nbsp;VDC&nbsp;&nbsp;<br />B8&nbsp;/NOWS&nbsp;No&nbsp;WaitState&nbsp;&nbsp;<br />B9&nbsp;+12VDC&nbsp;+12&nbsp;VDC&nbsp;&nbsp;<br />B10&nbsp;GND&nbsp;Ground&nbsp;&nbsp;<br />B11&nbsp;/SMEMW&nbsp;System&nbsp;Memory&nbsp;Write&nbsp;&nbsp;<br />B12&nbsp;/SMEMR&nbsp;System&nbsp;Memory&nbsp;Read&nbsp;&nbsp;<br />B13&nbsp;/IOW&nbsp;I/O&nbsp;Write&nbsp;&nbsp;<br />B14&nbsp;/IOR&nbsp;I/O&nbsp;Read&nbsp;&nbsp;<br />B15&nbsp;/DACK3&nbsp;DMA&nbsp;Acknowledge&nbsp;3&nbsp;&nbsp;<br />B16&nbsp;DRQ3&nbsp;DMA&nbsp;Request&nbsp;3&nbsp;&nbsp;<br />B17&nbsp;/DACK1&nbsp;DMA&nbsp;Acknowledge&nbsp;1&nbsp;&nbsp;<br />B18&nbsp;DRQ1&nbsp;DMA&nbsp;Request&nbsp;1&nbsp;&nbsp;<br />B19&nbsp;/REFRESH&nbsp;Refresh&nbsp;&nbsp;<br />B20&nbsp;CLOCK&nbsp;System&nbsp;Clock&nbsp;(67&nbsp;ns,&nbsp;8-8.33&nbsp;MHz,&nbsp;50%&nbsp;duty&nbsp;cycle)&nbsp;&nbsp;<br />B21&nbsp;IRQ7&nbsp;Interrupt&nbsp;Request&nbsp;7&nbsp;&nbsp;<br />B22&nbsp;IRQ6&nbsp;Interrupt&nbsp;Request&nbsp;6&nbsp;&nbsp;<br />B23&nbsp;IRQ5&nbsp;Interrupt&nbsp;Request&nbsp;5&nbsp;&nbsp;<br />B24&nbsp;IRQ4&nbsp;Interrupt&nbsp;Request&nbsp;4&nbsp;&nbsp;<br />B25&nbsp;IRQ3&nbsp;Interrupt&nbsp;Request&nbsp;3&nbsp;&nbsp;<br />B26&nbsp;/DACK2&nbsp;DMA&nbsp;Acknowledge&nbsp;2&nbsp;&nbsp;<br />B27&nbsp;T/C&nbsp;Terminal&nbsp;count;&nbsp;pulses&nbsp;high&nbsp;when&nbsp;DMA&nbsp;term.&nbsp;count&nbsp;reached&nbsp;&nbsp;<br />B28&nbsp;ALE&nbsp;Address&nbsp;Latch&nbsp;Enable&nbsp;&nbsp;<br />B29&nbsp;+5V&nbsp;+5&nbsp;VDC&nbsp;&nbsp;<br />B30&nbsp;OSC&nbsp;High-speed&nbsp;Clock&nbsp;(70&nbsp;ns,&nbsp;14.31818&nbsp;MHz,&nbsp;50%&nbsp;duty&nbsp;cycle)&nbsp;&nbsp;<br />B31&nbsp;GND&nbsp;Ground&nbsp;&nbsp;<br />C1&nbsp;SBHE&nbsp;System&nbsp;bus&nbsp;high&nbsp;enable&nbsp;(data&nbsp;available&nbsp;on&nbsp;SD8-15)&nbsp;&nbsp;<br />C2&nbsp;LA23&nbsp;Address&nbsp;bit&nbsp;23&nbsp;&nbsp;<br />C3&nbsp;LA22&nbsp;Address&nbsp;bit&nbsp;22&nbsp;&nbsp;<br />C4&nbsp;LA21&nbsp;Address&nbsp;bit&nbsp;21&nbsp;&nbsp;<br />C5&nbsp;LA20&nbsp;Address&nbsp;bit&nbsp;20&nbsp;&nbsp;<br />C6&nbsp;LA18&nbsp;Address&nbsp;bit&nbsp;19&nbsp;&nbsp;<br />C7&nbsp;LA17&nbsp;Address&nbsp;bit&nbsp;18&nbsp;&nbsp;<br />C8&nbsp;LA16&nbsp;Address&nbsp;bit&nbsp;17&nbsp;&nbsp;<br />C9&nbsp;/MEMR&nbsp;Memory&nbsp;Read&nbsp;(Active&nbsp;on&nbsp;all&nbsp;memory&nbsp;read&nbsp;cycles)&nbsp;&nbsp;<br />C10&nbsp;/MEMW&nbsp;Memory&nbsp;Write&nbsp;(Active&nbsp;on&nbsp;all&nbsp;memory&nbsp;write&nbsp;cycles)&nbsp;&nbsp;<br />C11&nbsp;SD08&nbsp;Data&nbsp;bit&nbsp;8&nbsp;&nbsp;<br />C12&nbsp;SD09&nbsp;Data&nbsp;bit&nbsp;9&nbsp;&nbsp;<br />C13&nbsp;SD10&nbsp;Data&nbsp;bit&nbsp;10&nbsp;&nbsp;<br />C14&nbsp;SD11&nbsp;Data&nbsp;bit&nbsp;11&nbsp;&nbsp;<br />C15&nbsp;SD12&nbsp;Data&nbsp;bit&nbsp;12&nbsp;&nbsp;<br />C16&nbsp;SD13&nbsp;Data&nbsp;bit&nbsp;13&nbsp;&nbsp;<br />C17&nbsp;SD14&nbsp;Data&nbsp;bit&nbsp;14&nbsp;&nbsp;<br />C18&nbsp;SD15&nbsp;Data&nbsp;bit&nbsp;15&nbsp;&nbsp;<br />D1&nbsp;/MEMCS16&nbsp;Memory&nbsp;16-bit&nbsp;chip&nbsp;select&nbsp;(1&nbsp;wait,&nbsp;16-bit&nbsp;memory&nbsp;cycle)&nbsp;&nbsp;<br />D2&nbsp;/IOCS16&nbsp;I/O&nbsp;16-bit&nbsp;chip&nbsp;select&nbsp;(1&nbsp;wait,&nbsp;16-bit&nbsp;I/O&nbsp;cycle)&nbsp;&nbsp;<br />D3&nbsp;IRQ10&nbsp;Interrupt&nbsp;Request&nbsp;10&nbsp;&nbsp;<br />D4&nbsp;IRQ11&nbsp;Interrupt&nbsp;Request&nbsp;11&nbsp;&nbsp;<br />D5&nbsp;IRQ12&nbsp;Interrupt&nbsp;Request&nbsp;12&nbsp;&nbsp;<br />D6&nbsp;IRQ15&nbsp;Interrupt&nbsp;Request&nbsp;15&nbsp;&nbsp;<br />D7&nbsp;IRQ14&nbsp;Interrupt&nbsp;Request&nbsp;14&nbsp;&nbsp;<br />D8&nbsp;/DACK0&nbsp;DMA&nbsp;Acknowledge&nbsp;0&nbsp;&nbsp;<br />D9&nbsp;DRQ0&nbsp;DMA&nbsp;Request&nbsp;0&nbsp;&nbsp;<br />D10&nbsp;/DACK5&nbsp;DMA&nbsp;Acknowledge&nbsp;5&nbsp;&nbsp;<br />D11&nbsp;DRQ5&nbsp;DMA&nbsp;Request&nbsp;5&nbsp;&nbsp;<br />D12&nbsp;/DACK6&nbsp;DMA&nbsp;Acknowledge&nbsp;6&nbsp;&nbsp;<br />D13&nbsp;DRQ6&nbsp;DMA&nbsp;Request&nbsp;6&nbsp;&nbsp;<br />D14&nbsp;/DACK7&nbsp;DMA&nbsp;Acknowledge&nbsp;7&nbsp;&nbsp;<br />D15&nbsp;DRQ7&nbsp;DMA&nbsp;Request&nbsp;7&nbsp;&nbsp;<br />D16&nbsp;+5&nbsp;V&nbsp;&nbsp;<br />D17&nbsp;/MASTER&nbsp;Used&nbsp;with&nbsp;DRQ&nbsp;to&nbsp;gain&nbsp;control&nbsp;of&nbsp;system&nbsp;&nbsp;<br />D18&nbsp;GND&nbsp;Ground&nbsp;Note:&nbsp;Direction&nbsp;is&nbsp;Motherboard&nbsp;relative&nbsp;ISA-Cards.&nbsp;&nbsp;<br />&nbsp;<br />&nbsp;<br />(未完)&nbsp;<br />&nbsp;<br />--&nbsp;<br />&nbsp;<br />※&nbsp;来源:·BBS&nbsp;水木清华站&nbsp;smth.org·[FROM:&nbsp;166.111.174.125]&nbsp;<br /><a href="00000020.htm">上一篇</a><a href="javascript:history.go(-1)">返回上一页</a><a href="index.htm">回到目录</a><a href="#top">回到页首</a><a href="00000022.htm">下一篇</a></h1></center><center><h1>BBS 水木清华站∶精华区</h1></center></body></html>

00000021.htm - 源码说明

本页面展示了「水木社区 embeded 版精华区 下载」中的 00000021.htm 源码文件，采用 HTM 编程语言编写，共 144 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

虫虫下载站收录了大量与embeded相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?