[En-Nut-Discussion] Re: [En-Nut-Announce] Version 3.4.2 Available

[Damian Slee]

A long time ago.  
the realtek is used in 16bit mode on a PC.  From memory the code was a
bit different to the nut one.  I can see some of the nut bits that have
come from the National data sheet.



-----Original Message-----
From: NGB [mailto:ngbmoreau at yahoo.com.au] 
Sent: Tuesday, 9 March 2004 4:52 PM
To: Ethernut User Chat (English)
Subject: RE: [En-Nut-Discussion] Re: [En-Nut-Announce] Version 3.4.2
Available

Just an idea, have you had a look at the Linux driver ?

Nic

>
> I'm not happy with it yet.  I haven't solved why tx packet loss occurs

> in the new or the old one.  Tx packet loss seems to occur occasionally

> when receiving at the same time.  And the times I get Rx CRC bit set 
> and/or DFR bit set, the current tx packet in the realtek also gets 
> dropped. I tried re-transmitting when this happened.  It fixed some, 
> but not all.
>
> The new driver which has a lot less code overhead in the tx side,
making
> it a lot quicker, seems to be worse with tx packet loss.   It seems
the
> more delay added by code, or delays() seems to reduce tx loss in the 
> old and new version.  But in reality I think this has the effect of 
> making the NIC operate in more of a half duplex fashion and hiding the
problem.
> The more connections happening, the more likely it is to happen.
>
> I had to give up looking at this last week, and move one.  I might 
> briefly look at it future weeks, but I may have to give up and go back

> to the old version with slower tx code, to hide the problem at the 
> moment.
>
>
>
> -----Original Message-----
> From: NGB [mailto:ngbmoreau at yahoo.com.au]
> Sent: Tuesday, 9 March 2004 4:00 PM
> To: Ethernut User Chat (English)
> Subject: [En-Nut-Discussion] Re: [En-Nut-Announce] Version 3.4.2 
> Available
>
> Does this release include the improved realtek driver ?
> Can seem to find anything in the changelog
>
> Thanks
>
> Nic
>
>
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