can't attach parallel port to any guest host

[tictacbum]

Hi,
if I configure a parallel port on a guest machine I get this error and can't start it:

Code: Select all

Unknown error creating VM.
VBox status code: -2602 (VERR_IOM_IOPORT_RANGE_CONFLICT).

Resultat Codi:
0x80004005
Component:
Console
Interfície:
IConsole {d5a1cbda-f5d7-4824-9afe-d640c94c7dcf}

Host is Debian 4.0
Guest is WinXP with latest guest additions installed
VirtualBox is 1.6.2 version

I configured port LPT1 ( IRQ 7 E/S 0x3BC ) to /dev/lp0
rights at /dev/lp0 are 666
If I disable parallel port, virtual machine works fine, any suggestions?
thanks!

[frank]

Parallel port support is more or less untested. Any help in debugging is appreciated, the source code is freely available.