[vortex] RX overrun with 3COM 3c982

[Bogdan Costescu]

On Thu, 14 Nov 2002, Claude Pignol wrote:

> Well, I am little bit lost:
> Is offset 7a (windows 7 and 10th byte): it's always 0??
> I don't know how to change the value of 0x3c
> and 0x3e. but before trying to change them it's a good thing to locate 
> them.

Yes, you are lost :-)
The NIC has 128 bytes of registers; the first 16 bytes are used for 
window-ed access to the 8 windows each with 16 bytes (so a total of 128 
bytes again). This is explained on pages 22-24 of the PDF that 3Com 
provides as documentation for 3C905C on their web site.
The offsets that Donald mentioned are actually real offsets, they 
should not be translated into window+offset.

-- 
Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu@IWR.Uni-Heidelberg.De