-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V3.1//EN"[]>
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
<book id="DoingIO">
<bookinfo>
</para>
</sect1>
- <sect1>
- <title>ISA legacy functions</title>
- <para>
- On older kernels (2.2 and earlier) the ISA bus could be read or
- written with these functions and without ioremap being used. This is
- no longer true in Linux 2.4. A set of equivalent functions exist for
- easy legacy driver porting. The functions available are prefixed
- with 'isa_' and are <function>isa_readb</function>,
- <function>isa_writeb</function>, <function>isa_readw</function>,
- <function>isa_writew</function>, <function>isa_readl</function>,
- <function>isa_writel</function>, <function>isa_memcpy_fromio</function>
- and <function>isa_memcpy_toio</function>
- </para>
- <para>
- These functions should not be used in new drivers, and will
- eventually be going away.
- </para>
- </sect1>
-
</chapter>
<chapter>