Messages in this thread | | | From | "Khimenko Victor" <> | Date | Wed, 6 Jan 1999 21:45:30 +0300 (MSK) | Subject | Re: Persistent sound hangs (2.0.0 - 2.2.0pre4 tested) |
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In <m0zxLNP-0007U2C@the-village.bc.nu> Alan Cox (alan@lxorguk.ukuu.org.uk) wrote: >> Hmmm... what would be the proper part of the kernel to detect buggy ISA >> chipsets? isa-quirks.c or something? Certainly not pci.c ...
> I dont know a safe way to detect such chipsets unfortunately. PCI chipsets > you can check when you scan the pci bus, isa/vlb dont have that.
>> Just bugged VIA tech support again... anyone care to bet on the odds of me >> ever receiving a reply?
> About 99%
>> But if there is a DMA hang bug... *any* ISA device using DMA might hang, >> right? Even SCSI cards and such?
> It only seems to trip up on certain patterns of DMA and devices - nobody has > reported floppy problems for example but lots of people have sound problems
As ARVID guys claims there are no problems with 8bit DMA (used by floppy) while non-working 16bit DMA. That's why ARVID 1031 and up do not use DMA at all ...
This is black list from ARVID documentation: -- cut -- PC-CHIPS CHIP 5/6 (motherboards M321, M396F) CDCOM International (really PC-CHIPS 5/6) PC-CHIPS CHIP 11/12 UMC UM82С48x/UM82C49x ALI M1419 CITYGATE D110-014/KS83C206Q FOREX FRX46C521A (may be this is not real FOREX) CONTAQ 82c596 & 82c206 Intel witch chips: S82426EX & 425 on motherboard PVI-486AP4 (usually this is Intel Champion) -- cut --
VIA not listed :-(( BTW ARVID FAQ claims that even floppy does not work on some MBs with AMD dx4-120 SV8B due incompatibility with WriteBack cache...
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