<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >Porting The Z8530 Driver</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Z8530 Programming Guide" HREF="book1.html"><LINK REL="PREVIOUS" TITLE="Network Layer Functions" HREF="c70.html"><LINK REL="NEXT" TITLE="Known Bugs And Assumptions" HREF="c83.html"></HEAD ><BODY CLASS="CHAPTER" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Z8530 Programming Guide</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="c70.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="c83.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="AEN77" ></A >Porting The Z8530 Driver</H1 ><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 <TT CLASS="FUNCTION" >z8530_read_port</TT > and <TT CLASS="FUNCTION" >z8530_write_port </TT > is intended to be all that is required to port this driver layer. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="c70.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="c83.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Network Layer Functions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Known Bugs And Assumptions</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
