[Coco] Fwd: IP packets on my coco

[John W. Linville]

Are you asking about IP checksums?  Or Ethernet CRCs?

The CS8900A datasheet indicates that it will append the Ethernet
CRC automatically unless specifically requested not to do so in the
Tx descriptor.

More modern chips can do IP checksums as well, but I doubt if the
CS8900A will do so.

John

On Tue, Jun 07, 2016 at 06:56:07PM -0400, Brett Gordon wrote:
> Hah...answered my own question..these chips take layer 2 ethernet frames...
> not too horrible to program for but....computing the CRC in the coco is
> slow and painfull.  Does one of these chips do the for us?
> 
> Brett M Gordon
> On Jun 7, 2016 6:37 PM, "Brett Gordon" <beretta42 at gmail.com> wrote:
> 
> > Hmhmh...  I recognize the NE2000 support in the realtek chip from linux.
> > I guess my question is: what kind of packets do we pump into/out of these
> > guys?  Ethernet frames or IP?   I know uIP will do arp but thats still one
> > layer up from the link layer.
> >
> > Brett M Gordon
> > On Jun 7, 2016 1:41 AM, "RETRO Innovations" <go4retro at go4retro.com> wrote:
> >
> >> On 6/7/2016 12:31 AM, Stephen H. Fischer wrote:
> >>
> >>> What the ????
> >>>
> >>> I see the board image but it quickly is replaced with (Soft Porn?)
> >>>
> >> Hmmm, not sure what is going on there...  It didn't do that for me, but
> >> postimage looks to be putting ads on the side...
> >>
> >> Anyway, here is another version, off my web site, no ads:
> >>
> >> http://go4retro.com/downloads/CocoNIC.png
> >>
> >>
> >> --
> >> Coco mailing list
> >> Coco at maltedmedia.com
> >> https://pairlist5.pair.net/mailman/listinfo/coco
> >>
> >
> 
> -- 
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> Coco at maltedmedia.com
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-- 
John W. Linville		Someday the world will need a hero, and you
linville at tuxdriver.com			might be all we have.  Be ready.