Re: PS2 -> USB magic

From: Matthew Dharm (mdharm-kernel@one-eyed-alien.net)
Date: Tue Jun 25 2002 - 12:37:43 EST

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In reply to: Nicolas Turro: "PS2 -> USB magic"
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BIOS emulation for your USB mouse as a PS/2 device. It's pretty common on
many mainboards.

Matt

On Tue, Jun 25, 2002 at 07:27:20PM +0200, Nicolas Turro wrote:
>
> Hello,
>
> on my laptop (compaq armada m300), i used to plug an usb mouse,
> and it was 'seen' as a ps2 mouse by Xfree, without any usb module loading
> (kernel 2.2.18, with custom configure options)
>
> root@polaire# ls -l /dev/mouse /dev/psmouse
> lrwxrwxrwx 1 root root 12 Jun 25 15:27 /dev/mouse ->
> /dev/psmouse
> crw-rw-rw- 1 root sys 10, 1 Jun 25 15:27 /dev/psmouse
>
> and :
> Section "InputDevice"
> Identifier "Mouse1"
> Driver "mouse"
> Option "Device" "/dev/mouse"
> Option "Protocol" "PS/2"
> Option "Emulate3Buttons"
> EndSection
>
> In my XF86Config ...
> It was kinda magic....
>
> Anyway, i compiled a 2.4.17 kernel (with more or less the same configure
> options, but it was a pain for usb), and now the same 'magic' doesn't work....
> I must use usbcore, hid, mousedev, uhci modules in order to use my usb
> mouse...
>
> Can someone explain me how it worked in 2.2.18 without those modules,
> and is it possible to make the same magic work in 2.4.17 ?
>
> Nicolas
> -
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-- Matthew Dharm Home: mdharm-usb@one-eyed-alien.net Maintainer, Linux USB Mass Storage Driver

Why am I talking to a toilet brush? -- CEO User Friendly, 4/30/1998

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