📄 hal-introduction.html
字号:
<!-- Copyright (C) 2003 Red Hat, Inc. --><!-- This material may be distributed only subject to the terms --><!-- and conditions set forth in the Open Publication License, v1.0 --><!-- or later (the latest version is presently available at --><!-- http://www.opencontent.org/openpub/). --><!-- Distribution of the work or derivative of the work in any --><!-- standard (paper) book form is prohibited unless prior --><!-- permission is obtained from the copyright holder. --><HTML><HEAD><TITLE>Introduction</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos Reference Manual"HREF="ecos-ref.html"><LINKREL="UP"TITLE="The eCos Hardware Abstraction Layer (HAL)"HREF="the-ecos-hardware-abstraction-layer.html"><LINKREL="PREVIOUS"TITLE="The eCos Hardware Abstraction Layer (HAL)"HREF="the-ecos-hardware-abstraction-layer.html"><LINKREL="NEXT"TITLE="Architecture, Variant and Platform"HREF="hal-architecture-variant-and-platform.html"></HEAD><BODYCLASS="CHAPTER"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos Reference Manual</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="the-ecos-hardware-abstraction-layer.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="hal-architecture-variant-and-platform.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="CHAPTER"><H1><ANAME="HAL-INTRODUCTION">Chapter 6. Introduction</H1><P>This is an initial specification of the <SPANCLASS="emphasis"><ICLASS="EMPHASIS">eCos</I></SPAN> Hardware Abstraction Layer (HAL). The HAL abstractsthe underlying hardware of a processor architecture and/or theplatform to a level sufficient for the eCos kernel to be ported ontothat platform.</P><DIVCLASS="NOTE"><BLOCKQUOTECLASS="NOTE"><P><B>Caveat: </B>This document is an informal description of the HAL capabilities andis not intended to be full documentation, although it may be used as asource for such. It also describes the HAL as it is currentlyimplemented for the architectures targeted in this release. It mostclosely describes the HALs for the MIPS, I386 and PowerPC HALs. Otherarchitectures are similar but may not be organized precisely asdescribed here.</P></BLOCKQUOTE></DIV></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="the-ecos-hardware-abstraction-layer.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-ref.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="hal-architecture-variant-and-platform.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">The eCos Hardware Abstraction Layer (HAL)</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="the-ecos-hardware-abstraction-layer.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Architecture, Variant and Platform</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -