[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 27 of 122 | ANN.lu |
Posted by Georg Steger on 20-May-2003 14:08 GMT | In reply to Comment 14 (Ben Hermans/Hyperion): > 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.
Hmm ... don't know that much about hardware stuff, but in
software area such conclusions unfortunately might not necessarily
always turn out to "work".
Own experience: software worked fine when compiled with gcc.
software crashed when compiled with egcs. egcs was known to
be pretty buggy. blamed crash on egcs. Later it turned out
that the crash was actually caused by a bug in the software.
nothing to do with compiler. It not crashing on gcc was pure
luck.
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Georg Steger |
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