Alternatively mention use of pciconf -vl instead of pnpinfo.

PR:		docs/33345
Submitted by: 	sheldonh

en_US.ISO8859-1/books/faq/book.sgml

@@ -3983,6 +3983,11 @@ quit</programlisting>
             in <literal>[]</literal> have been added to clarify the
             context.</para>
 
+          <note>
+            <para>The contents of this quotation has been updated from
+             its original text.</para>
+          </note>
+
           <blockquote>
             <para>The PNP bios preconfigured it [the modem] and left it
               laying around in port space, so [in 3.X] the old-style ISA
@@ -4039,7 +4044,25 @@ IO range check 0x00 activate 0x01</screen>
             <quote>Vendor ID</quote> line at the start of the output. The
             hexadecimal number in parentheses (0x3024a341 in this example)
             is the PnP id and the string immediately before this (PMC2430)
-            is a unique ASCII id. This information needs adding to the file
+            is a unique ASCII id.</para>
+
+          <para>Alternatively, if &man.pnpinfo.8; does not list the card in
+            question, &man.pciconf.8; can be used instead.  This is part of
+            the output from <command>pciconf -vl</command> for an onboard
+            sound chip:</para>
+
+          <screen>&prompt.root; pciconf -vl
+chip1@pci0:31:5:        class=0x040100 card=0x00931028 chip=0x24158086 rev=0x02 hdr=0x00
+    vendor   = 'Intel Corporation'
+    device   = '82801AA 8xx Chipset AC'97 Audio Controller'
+    class    = multimedia
+    subclass = audio</screen>
+
+          <para>Here, you would use the <varname>chip</varname> value,
+            <quote>0x24158086</quote>.</para>
+
+          <para>This information (Vendor ID or chip value) needs adding 
+            to the file
             <filename>/usr/src/sys/isa/sio.c</filename>.</para>
 
           <para>You should first make a backup of <filename>sio.c</filename>