| [Forum] So the World May Know: To all AmigaOne board owners | ANN.lu |
| Posted on 03-Oct-2004 18:16 GMT by ... | 113 comments
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Interesting stuff on MooBunny.
Check it out here.
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| So the World May Know: To all AmigaOne board owners : Comment 82 of 113 | ANN.lu |
| Posted by Amon_Re on 04-Oct-2004 16:02 GMT | Might aswell toss in my 2 cents....
IF you read the message from Alan, you can clearly understand out of it that it's a recent development, and that they are currently still investigating it.
I quote:
"Our best guess is that this problem is probably due to an
incomplete initialisation of the VIA chip. We* have found from
developing the OS4 and Linux ethernet drivers that there are
undocumented registers within the VIA southbridge which unless
properly set on initialisation lead to unpredictable and
undocumented results. We* have also found that in the case of
concurrent VIA IDE UDMA and ethernet the VIA puts out an illegal
bus signal which causes the system to hang. We know this because
MAI labs and Adam Kowalczyk have managed to filter out this
signal with hardware, and with this done (ie with the illegal
signals from the VIA filtered out) the VIA IDE UDMA and ethernet
work properly together. However this hardware filtering is not a
practical fix to existing boards because it would involve a very
complex rework. "
Bold added by me, now, i do recall myself saying the same thing ages ago, but that's not the point i'm going to make, my point is that, if it is indeed an init problem, then the boards are still salvageable, the question is, can they pull it off without VIA cooperating.
Another quote:
"In the total absence of any assistance from VIA themselves, work
is being done to try to try to determine why the changing of the
bus req/grant pair appears to work with some boards and not
others, and to reverse engineer the VIA initialisation code used
with the 686B soutbridge on x86 platforms to try to find out what
causes and/or inhibits the VIA sending out the illegal signals.
We are hopeful that this work will finally produce the desired
results by the time the finished version of OS4 is released. "
Now, the Earlybirds were aimed at, ahem, Early adaptors & developers, who knew that OS4 wasn't ready yet, and that linux support wasn't perfect, but the quote above suggests that they are still working on it, they haven't given up these boards, saying that the boards are at fault still might be true/wrong.
What one should manage is to get VIA to aknowledge/help/support this problem, if it is indeed a VIA problem.
Hope i made any sense, i'm kinda out of it today :p |
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