Kin,

An "InPort Mouse" isn't really PS/2.  It is a very old Microsoft Bus 
Mouse from the early 1980s.  I believe they used to use /dev/inportbm or 
similar.  They are still supported in the 2.6 kernel, but I haven't 
dealt with one to be honest.

File location:
<kernel-src>/drivers/input/mouse/inport.c
Description:
Inport (ATI XL and Microsoft) busmouse driver

I'd start with modprobing it and seeing what device nodes it uses and go 
from there.  Google might be your best bet, as I doubt many people have 
access to this kind of old hardware.

Cheers,
Mark

Kin Yip wrote:
> Hi,
>  
> To have better chance of being helped, I include Xorg.0.log file .    
> There is /dev/input/mice (which is my
> guess where the mouse device is ).   Any help will be greatly appreciated.
>  
> Kin
> 
> *From:* Kin Yip <mailto:[log in to unmask]>
> *Date:* Sunday, January 04, 2009 3:28 PM
> *To:* [log in to unmask] 
> <mailto:[log in to unmask]>
> *Subject:* PS/2 mouse doesn't work after installing SL 5.1
> 
> Hi,
>  
> I have an old computer box which has an old PS/2 mouse interface (with a 
> mouse called InPort Mouse) and  I've been using SL 3.x. 
> So today, I've finally taken the gut to upgrade it SL5.1 (with SL5.1).  
> I've chosen the "base" only so that I need only 1 CD and then
> I've added to it from network using "yum install....".
>  
> The X display didn't work at first when the system chose automatically :
> Section "Device"
>         Identifier  "Videocard0"
>         Driver      "cirrus"
> EndSection
>  
> in /etc/X11/xorg.conf
>  
> I've made it work by changing "cirrus" to "vesa". 
>  
> But so far, the mouse just doesn't work.  ( It used to work in SL 3.x. ) 
> I regretted that I didn't save any files before formatting the harddisk
> (as I didn't expect any problem).
>  
> Is there anything which I should install or any tool that I can 
> "configure" the mouse ?   Long time ago, there used to be mouseconfig or
> something like that, but not any more ?
>  
> Can somebody advise ???  I'll greatly appreciate (as I'm running out of 
> ideas now).
>  
> Kin
>