[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 74 of 122 | ANN.lu |
Posted by Joe "Floid" Kanowitz on 21-May-2003 15:51 GMT | Stupid question, but does anyone have data on the timings and perhaps "drive strengths" that make the memory problem reproducible? Further, does the Articia (with.. what was that memory-integrity buzzword?) have ECC support, and a mechanism for dumping ECC statistics while you guys try to troubleshoot? [Hacking Linux to handle ECC on a new platform is a 'little' complex... but seems like a diagnostic module in U-Boot or a memtest86-like test disk, possibly using ECC hit detection as a handy shortcut, would really help narrow things down.]
Is U-Boot (and/or Genesi's licensed OF) getting memory timings from module SPD ROMs, or just trying to use a generic "profile" that could possibly be too optimistic?
Is that Kingmax module specified in the guy's results Eyetech-approved or not? [Though if DMA transfers *only* mung after
...and if Ole-Egil is going to test that way, can he provide TCP/ether statistics (equivalent of FreeBSD netstat -i interface#)? :) |
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