[tulip] NIC ---> cable-modem at full duplex?

[Jaap Brink]

On Fri, 15 Dec 2000, Mr V (Note my email change!!!) wrote:

> The tulip-diag output below was from before I got tulip/pci-scan working and
> loaded.
> 
> My NIC (ADMtek Centaur) card was listed as full-duplex then by tulip-diag.
> Problem(?) is, tulip-diag now shows the card to be half-duplex.  *Should*
> the card be running at full duplex now?
> 
> It's hooked to a RCA cable modem (that I've configured with DOS driver both
> with 'auto-sense' and then with '100Tx FD' trying to get it to work)
> 
> I've tried these 'options' under tulip.0:
> 
> option=1(and 3, and 14)
> debug=3 (and 6)
> full_duplex=1
> 
> The card works, just listed as HD...
> 
> I saw some posts stating that no one should even *want* to change from h-d
> to f-d (these posts seemed to list switches/routers/hubs   -  mine's a cable
> modem). If I'm wasting time here, sorry.
> 
> 
> 
> The port selection was originally stated as this:
> 
> > tulip-diag.c:v2.04 9/26/2000 Donald Becker (becker@scyld.com)
> >  http://www.scyld.com/diag/index.html
> > Assuming a Digital Tulip series adapter at 0xb800.
> >  Port selection is 100mbps-SYM/PCS 100baseTx scrambler, full-duplex.
> >  Transmit started, Receive started, full-duplex.
> 
> Now, same thing just half-duplex.
> 
> 
> 
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I have cable as well and my rtl8139 runs in half duplex. Seems to me
that's what you want. 

Jaap