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Add information about polled mode port under 5.X

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With some help from:	bde
This commit is contained in:
Marc Fonvieille 2002-11-27 19:31:49 +00:00
parent 18714ee672
commit 51978ad40a
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=15062
1 changed files with 17 additions and 0 deletions
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en_US.ISO8859-1/books/handbook/printing/chapter.sgml
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@ -637,7 +637,24 @@ ppc0: FIFO with 16/16/8 bytes threshold</screen>
<para>If you want polled mode, do not add the
<literal>irq</literal> specifier:</para>
<para>For FreeBSD&nbsp;4.X, use the following line in
your kernel configuration file:</para>
<programlisting>device ppc0 at isa?</programlisting>
<para>For FreeBSD&nbsp;5.X, simply remove in your
<filename>/boot/device.hints</filename> file, the
following line:</para>
<programlisting>hint.ppc.0.irq="<replaceable>N</replaceable>"</programlisting>
<para>In some cases, this is not enough to put the
port in polled mode under FreeBSD&nbsp;5.X. Most of
time it comes from &man.acpi.4; driver, this latter
is able to probe and attach devices, and therefore,
control the access mode to the printer port. You
should check your &man.acpi.4; configuration to
correct this problem.</para>
</listitem>
</itemizedlist>
</step>