On Tue, 27 Jan 1998, Bernhard Rosenkraenzer wrote:
>> Bus 0, device 2, function 0:
>> VGA compatible controller: Cirrus Logic GD 7548 (rev 0).
>> Fast devsel. IRQ 255.
>>
>> Note that the video device is on IRQ 255. Is this possibly a bug somewhere?
>
>IRQ 255 doesn't exist, but it looks like a (unsigned char) -1.
>My guess is that your VGA card doesn't use an IRQ, and IRQ 255 is the PCI
>driver's way to display this.
PCI controller sets -1 ( 255 ) IRQ in two cases :
a) The PCI device doesn't need an IRQ.
b) There is no available IRQ to assign to this device.
Bye.
-- Natural laws have no pity.
-- With best of best regards, Pawel S. Veselov (aka Black Angel) internet : vps@unicorn.niimm.spb.su ( mail,finger,talk ) Web page : http://www.niimm.spb.su/~vps/ ICQ : 5252265