[Asterisk-doc] docs installation.xml,1.14,1.15

[blitzrage]

Comments:
Update of /cvsroot/asterisk/docs
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14999/docs

Modified Files:
	installation.xml 
Log Message:
Randy Resnick
- IRQ sharing and conflicts additions to chapter 2
Index: installation.xml
===================================================================
RCS file: /cvsroot/asterisk/docs/installation.xml,v
retrieving revision 1.14
retrieving revision 1.15
diff -C2 -d -r1.14 -r1.15
*** installation.xml	2 Jun 2004 00:24:43 -0000	1.14
--- installation.xml	2 Jun 2004 02:24:55 -0000	1.15
***************
*** 84,87 ****
--- 84,141 ----
  			something to be aware of.
  			</para>
+ 
+ 			<para>
+ 			If you are dedicating the computer to Asterisk, free up the most IRQs as
+ 			possible by disabling USB, serial and parallel port support in the BIOS.
+ 			Otherwise, you want to free as many as possible.  You will *not* want to
+ 			see a NIC sharing an IRQ with a TDM or FXO card!  It's best that these cards
+ 			have their own IRQ.
+ 			</para>
+ 
+ 			<para>
+ 			Most BIOS' will allow you to manually assign IRQs to specific slots.  Go into
+ 			the BIOS and look for the IRQ area, often on the second page.  If it is set to
+ 			AUTO by default, try setting to manual and see what happens.  Chances
+ 			are, a table will become available for manually assigning an IRQ to each slot.
+ 			</para>
+ 
+ 			<para>
+ 			Note: One thing to watch out for on some motherboards is slots *sharing* IRQs.
+ 			Look in the BIOS and check if it has an entry like "1/5" in the IRQ table.
+ 			</para>
+ 
+ 			<para>
+ 			Once booted, view <filename class='directory'>/proc/interrupts</filename> to
+ 			see the assigned IRQs.
+ 			</para>
+ 
+ 			<para>
+ 			(output below is just an example with Digium hardware flagged)
+ 			</para>
+ 
+ 			<para>
+ 			<screen>
+ 			<prompt>#</prompt> <command>cat /proc/interrupts</command>
+ 			            CPU0
+ 			    0:   41353058          XT-PIC  timer
+ 			    1:       1988          XT-PIC  keyboard
+ 			    2:          0          XT-PIC  cascade
+ 			    3:  413437739          XT-PIC  wctdm &gt;-- TDM400
+ 			    4:    5721494          XT-PIC  eth0
+ 			    7:  413453581          XT-PIC  wcfxo &gt;-- X100P
+ 			    8:          1          XT-PIC  rtc
+ 			    9:  413445182          XT-PIC  wcfxo &gt;-- X100P
+ 			   12:          0          XT-PIC  PS/2 Mouse
+ 			   14:     179578          XT-PIC  ide0
+ 			   15:          3          XT-PIC  ide1
+ 			NMI:          0
+ 			ERR:          0
+ 			</screen>
+ 			</para>
+ 
+ 		<para>
+ 		Above you can see the three Digium cards each on its own IRQ.  If this is the
+ 		case, you can go on to install hardware drivers.
+ 		</para>
  		</sect2>