Messages in this thread | | | From | kuznet@ms2 ... | Subject | Re: PCI init issues | Date | Wed, 5 Mar 2003 02:12:50 +0300 (MSK) |
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Hello!
> - XP is able to reprogramm the IO_APIC so that all four pins are > routed properly. > > Sounds a bit heretical, I know. :-)
Let me to cite message from Znyx engineer.
>>The question is important. Looking into our implemenation, I see >>that it is strongly bound to correctness of mp table. > >We had a similar problem in about 1994, when we designed >the first multi-port adapters with a bridge. Most BIOSes at that >point did not initialize PPBs, or they did not do it correctly. We >decided to build the required support into our drivers. That meant >that some vendors with broken BIOS would point to us and say 'see >it works'. Our advantage in selling these people adapters, but >maybe it took a bit longer for the market to force vendors to fix >BIOSes.
So, maybe the workaround is in znyx driver for XP. :-) BIOSes were fixed to understand the first level bridges, but I guess none of them construct correct tables for second level bridges.
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