According to Chris Baird:
>
>        sb0 at isapnp0 port 0x220/16 irq 5 drq 0,0
                                                ^^^^

This is suspicious - your high & low dma's should not be the same.  I
suggest you start at the BIOS and look at that - make sure the pnp
stuff is enabled, make sure that have locked down all "legacy isa"
interrupts for the devices you have (this included the com ports et
al) so they are not snatched by pci/pnp.  Do the same with the DMA (I
suspect that this may be where your problems lie).  Setting up a
motherboard so that PnP works correctly is a major PITA.

-- 
===============================================================================
Brett Lymn, Computer Systems Administrator, British Aerospace Australia
===============================================================================