to break down the first line:
ADA = athlon64
3200 = 3200+ rating, which is 2ghz for this chip
D = socket 939, lidded cpu
I = 1.40v standard voltage
K = max temperature. sadly it's not in amd's technical documentation yet, so i can't say what it is (p = 70c, i = 63c)
4 = 512kb cache
BI = revision D0 (90nm winchester)
so to sum up, you have a 3200+ winchester
in the second line "0501" indicates that it's made in the first week of 2005.
it's not on the amd site, but for those who have been following winchesters really closely, we know that all 90nm chips right now are the D0 revision of the winchester. i don't know why amd is being too lazy to update those spec sheets for winchester, other than adding the chart in. i have a few other bones to pick with them too (such as not not documenting any data for the mobile chips )
and i'm glad i could help, don't hesitate to ask if you need anything else
and as a side note, the retail box of that is usually labeled something like "ADA3200BIBOX"
box obviously meaning.. retail box, hehehe
and fortunatly they put the core revision on it too, so you know if you're buying a winchester, or a 130nm chip (some newcastles and clawhammers overlap, so it's harder to distinguish them apart)