Re: ServerWorks OSB4 in impossible state

From: Alan Cox (
Date: Thu Aug 22 2002 - 12:58:07 EST

On Thu, 2002-08-22 at 13:02, Martin Wilck wrote:
> 1) The "4 byte shift" issue does not affect the CSB5 series.

True (not a rule the -ac tree knows about right now) but one that the
next tree will subject to time constraints.

> 2) The tested condition inb(dma_base+0x02)&1 is valid if the
> device doing the DMA reported an error status. Only if the
> device reports success is there an indication of the "4 byte shift".


> 3) The "4 byte shift" problem matters not for read-only devices like
> CD-ROMS; at least it is no reason to stall the computer if it occurs
> because data corruption is not an issue.

True (-ac knows about this)

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