[Forum] Articia: Still DMA-problems? | ANN.lu |
Posted on 20-May-2003 11:16 GMT by Senex | 122 comments View flat View list |
From a news-item at VGR.com it appears that the current Articia-northbridges might still have DMA-related problems:
"Mr. S.W. who sends over screen shots of newer AmigaOne 800mhz G4 hardware, has sent over 2 screen shots of the new A1 with G4 running 'amigaone xe/g4 7451 800mhz, excalibur radeon 9000 pro 64mb ddr ram, valueram kvr133x72rc3/256 kingston'. He wants to know '.. if other aone users have that problem as well..', 'it never outputs the same checksum with dma enabled when testing an iso file which is larger than the swap space used'
You can see the Radeon 9000 Pro screen shots here: DMA On & DMA Off."
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Articia: Still DMA-problems? : Comment 18 of 122 | ANN.lu |
Posted by Mike on 20-May-2003 12:46 GMT | In reply to Comment 14 (Ben Hermans/Hyperion): @Ben Hermans
> The reason why we know it's a VIA 686B Linux driver related problem is simply
> because it doesn't show up when using a different IDE controller located on the PCI
> bus or a SCSI controller.
> If it really were an Articia S problem, you'd expect to see the same issues with all DMA
> transfers regardless of the controller. "
Then does it surprise you if I tell you that PCs using the same southbridge (VIA 686B) and Linux (even not the latest) doesn't have this problem? (Of course they have a different northbridge.)
Maybe you'll tell me this only happen on PPC. But I don't think so. The drivers are exactly the sames, and I don't see how the CPU can make the bug appear suddendly.
I think you conclude too quickly. |
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