Just an update. After a little hiatus from Amigaland, I had a real desire to figure this problem out and enjoy some netradio from my A2000 + Delfina card. :-) Despite my last post, the thing started crashing again, even with low-bitrate streams - it just took longer. In short, bitrates up to 128k are entirely safe, at least for my test period of a few days.
The long story...
The Ariadne 2 card was my biggest problem. I had reproducible crashes during times of high Zorro bus load, which would lock the Delfina, and sometimes the whole system. (Narrowed this one down by process of elimination.) Replaced with an original Ariadne (thanks to a nice Norwegian fellow), and aside from performing measurably better, no more crashes under the above conditions.
-- Sidenote -- Actually, the Ariadne is the only network card I have that works in my A2000 alongside the TekMagic and PIV. Both my A4066 (fastest of the bunch) and Ariadne 2 cause problems, though they're perfectly fine in my A3000D. The issues with the Ariadne 2 in the A2000 were far more subtle, and it took a looong time to figure out WTF it was.
Delfinit was causing the Delfina to freeze, as soon as it was ran... but only on 2 of 3 resets. :-/ Not sure what the issue was (verified this one over and over), but everything is fine using Delftweak alone.
I also quit overclocking my Amigas. Returned the TekMagic from 60 to 50MHz :-) Too risky wrt the programmable logic, IMHO, and who knows what other kind of weird problems might be caused, especially in a loaded Zorro system. Can't say whether or not this had any real effect, aside from my peace of mind. However, along with replacing the Ariadne 2, the thing -- as far as Amigas go -- is absolutely ROCK SOLID now, just like my A1200 and A3000.
Unfortunately, bitrates above 128k are still not reliable. Oddly, one 256k stream will predictably crash within minutes, while another runs for several hours. No idea why. I figure the card is simply old tech, sw a little buggy... just the legend of the Delfina... :shrug:
To summarize:
Got card, replaced obviously leaking capacitors
Installed Micheal Henke patched lib
Replaced DSP with 66MHz rated part <--in hindsight this was kind of dumb, fortunately everything went *perfectly* , but I easily could have ruined some rare hardware! Overclocking the card, even mildly, made no difference in the frequency of crashes, with either DSP
Replaced Ariadne 2 with Ariadne
Quit using Delfinit, just Delftweak
Returned accelerator to original clock
and
Stick to 128k bitrate. This just seems to be the reliable limit, same exact behavior in my A3000 as well. At least I know it's usable under certain conditions, just don't ask _too_ much from it and it's a pretty nice old card.
