<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!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=ANSI_X3.4-1968" /><title>Chapter 7. Porting The Z8530 Driver</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Z8530 Programming Guide" /><link rel="up" href="index.html" title="Z8530 Programming Guide" /><link rel="prev" href="ch06.html" title="Chapter 6. Network Layer Functions" /><link rel="next" href="ch08.html" title="Chapter 8. Known Bugs And Assumptions" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 7. Porting The Z8530 Driver</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch06.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ch08.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 7. Porting The Z8530 Driver"><div class="titlepage"><div><div><h2 class="title"><a id="Porting_The_Z8530_Driver"></a>Chapter 7. Porting The Z8530 Driver</h2></div></div></div><p> The Z8530 driver is written to be portable. In DMA mode it makes assumptions about the use of ISA DMA. These are probably warranted in most cases as the Z85230 in particular was designed to glue to PC type machines. The PIO mode makes no real assumptions. </p><p> Should you need to retarget the Z8530 driver to another architecture the only code that should need changing are the port I/O functions. At the moment these assume PC I/O port accesses. This may not be appropriate for all platforms. Replacing <code class="function">z8530_read_port</code> and <code class="function">z8530_write_port </code> is intended to be all that is required to port this driver layer. </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch06.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="ch08.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 6. Network Layer Functions </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 8. Known Bugs And Assumptions</td></tr></table></div></body></html>
