lkml.org 
[lkml]   [1998]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Dual keyboard (with thinkpad 560X)

Related to this:
is it possible to use one of Ps/2 to serial adapters to connect a
Ps/2 keyboard ? Will it get damaged ? (or not ?)

Vladimir Dergachev

PS Regarding heavy modifications: see GGI
homepage: http://synergy.caltech.edu/~ggi/



On Sun, 27 Sep 1998, Pavel Machek wrote:

> Hi!
>
> It is possible to connect two keyoards to one computer. (I'll describe
> concrete steps to do this with thinkpad 560X, altrough it should work
> on any PS/2-mouse-capable computer).
>
> 0. Modify kernel to always detect psaux device
>
> --- clean//drivers/char/psaux.c Fri Sep 11 20:54:24 1998
> +++ linux/drivers/char/psaux.c Fri Sep 25 12:04:17 1998
> @@ -617,7 +617,7 @@
> psaux_fops.release = release_qp;
> } else
> #endif
> - if (aux_device_present == 0xaa) {
> + if (1 || (aux_device_present == 0xaa)) {
> printk(KERN_INFO "PS/2 auxiliary pointing device detected -- driver installed.\n");
> aux_present = 1;
> } else {
>
> 1. Thinkpad: Turn trackpoint off, reboot for change to take effect,
> wait for linux to come up, CONNECT PS/2 KEYBOARD WHILE UP & RUNNING.
> 2. killall gpm (in case it touches /dev/psaux)
> 3. try attached software, leds on keyboard should blink and strange
> scancodes should appear as you press keys on secondary
> keyboard. (You'll need r/w privileges to /dev/psaux).
>
> Strange is that keycodes are _not_ normal PC scancodes (I pressed ESC
> F1 F2 F3 F4
>
> (76)(f0)(76)(5)(f0)(5)(6)(f0)(6)(4)(f0)(4)(c)(f0)(c)
>
> : release is prefixed with f0 etc. I would like to know what these
> are...
>
> And now, what issues it brings up: It is possible to create 2-console
> machine from normally available components: you take PC, keyboard,
> ps/2 keyboard, VGA and MDA (or good-PCI-VGA + good-PCI-VGA), and you
> are done. I think that it would be nice to support this -
> unfortunately this needs heavy modifications to current input device
> support...
>
> Pavel
> --
> I'm really pavel@atrey.karlin.mff.cuni.cz. Pavel
> Look at http://atrey.karlin.mff.cuni.cz/~pavel/ ;-).


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:44    [W:0.045 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site