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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><link rel="STYLESHEET" type="text/css" href="wrs.css"><title> Overview </title></head><body bgcolor="FFFFFF"><p class="navbar" align="right"><a href="index.html"><img border="0" alt="[Contents]" src="icons/contents.gif"></a><a href="GuideIX.html"><img border="0" alt="[Index]" src="icons/index.gif"></a><a href="c-over.html"><img border="0" alt="[Top]" src="icons/top.gif"></a><a href="c-over3.html"><img border="0" alt="[Prev]" src="icons/prev.gif"></a><a href="c-over5.html"><img border="0" alt="[Next]" src="icons/next.gif"></a></p><font face="Helvetica, sans-serif" class="sans"><h3 class="H2"><i><a name="83442">1.4 VxWorks Facilities: An Overview</a></i></h3></font><dl class="margin"><dl class="margin"><dd><p class="Body"><a name="83443"> </a>This section provides a summary of VxWorks facilities; they are described in more detail in the following subsections. For details on any of these facilities, see the appropriate chapters in this manual.</p><dl class="margin"><b class="BulletHead"><li><a name="83444"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">High-Performance Real-time Kernel Facilities</font></li></b></dl><dl class="margin"><dd><div class="Indent"><a name="83445"> </a>The VxWorks kernel, <i class="i">wind</i>, includes multitasking with preemptive priority scheduling, intertask synchronization and communications facilities, interrupt handling support, watchdog timers, and memory management.</div><br></dl><dl class="margin"><b class="BulletHead"><li><a name="83446"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">POSIX Compatibility</font></li></b></dl><dl class="margin"><dd><div class="Indent"><a name="83447"> </a>VxWorks provides most interfaces specified by the 1003.1b standard (formerly the 1003.4 standard), simplifying your ports from other conforming systems.</div><br></dl><dl class="margin"><b class="BulletHead"><li><a name="83448"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">I/O System</font></li></b></dl><dl class="margin"><dd><div class="Indent"><a name="83449"> </a>VxWorks provides a fast and flexible ANSI C-compatible I/O system, including UNIX standard buffered I/O and POSIX standard asynchronous I/O. VxWorks includes the following drivers: <p class="table"><table border="0" cellpadding="0" cellspacing="0"><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87273"> </a>Network driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87275"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87277"> </a>for network devices (Ethernet, shared memory)</p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87279"> </a>Pipe driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87281"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87283"> </a>for intertask communication</p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87285"> </a>RAM "disk" driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87287"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87289"> </a>for memory-resident files</p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87291"> </a>SCSI driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87293"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87295"> </a>for SCSI hard disks, diskettes, and tape drives </p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87297"> </a>Keyboard driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87299"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87301"> </a>for PC x86 keyboards (x86 BSP only)</p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87303"> </a>Display driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87305"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87307"> </a>for PC x86 VGA displays (x86 BSP only)</p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87309"> </a>Disk driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87311"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87313"> </a>for IDE and floppy disk drives (x86 BSP only)</p></td></tr><tr valign="top"><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87315"> </a>Parallel port driver</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87317"> </a>-</p></td><td colspan=1 rowspan=1><p class="BodyLeft"><a name="87319"> </a>for PC-style target hardware</p></td></tr><tr valign="middle"><td colspan="20"></td></tr></table></p></div><br></dl><dl class="margin">⌨️ 快捷键说明
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