DECpc XL 590 -> bios won't set up IRQ's and Linux neither

[Folkert van Heusden]

Hi,

I have a DECpc XL 590, it's an oldy P90.
When it boots up with Linux, I get the following error:
PCI: PCI BIOS revision 2.00 entry at 0xf0100, last bus=0
PCI: Using configuration type 2
PCI: Probing PCI hardware
PCI: fixing NCR 53C810 class code for 00:01.0
PCI: Error 81 when fetching IRQ routing table.  <------------
None of the PCI-devices get an IRQ assigned:
00:07.0 USB Controller: OPTi Inc. 82C861 (rev 10) (prog-if 10 [OHCI])
        Subsystem: OPTi Inc. 82C861
        Flags: medium devsel
        Memory at 10000000 (32-bit, non-prefetchable) [size=4K]

00:08.0 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
        Subsystem: Unknown device 3083:0035
        Flags: medium devsel
        Memory at 10001000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [40] Power Management version 2
<etc.>

I tried booting with pci=biosirq, to no avail.
Kernel is 2.4.20.
Is this a non-fixable bug in the bios? Bug in the kernel? Anything?

Thank you.
Folkert