thanks, but what is the exact problem source , DMA or unmask IRQ ?
> Put any CDROM/DVD in DMA mode and it will work
> for a while and then eventually lock the PC up. This is a hardware flaw.
Doh ! really bad news :-(
What about watching DVDs ?
I'm watching DVDs on windoze using a software-only player,
and without DMA you get nast frameskips ,because the PIO
transfer uses too much CPU.
I'm watching DVDs for hours ( DMA enabled) without any lockups.
But are you sure that every ATAPI CDROM drive on the planet
has this hardware flaw.
I stressed my CDROM drives quite a bit, and was unable to lock up the box.
> There is no known software workaround. This is not the ISA DMA bug either.
> This is a completely different bug.
Interesting, any pointers for more accurate infos on this topics ?
How is this handled my other OSes ?
>
> Promise Ultra66. No DMA on CDROM/DVDs. It just wont work. At all.
>
> -Dan
PS: why should recent ATAPI CDROM let you set the DMA mode, when they
know that it could lead to problems ?
regards,
Benno.
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