[Coco] Fwd: IP packets on my coco

[Brett Gordon]

Hmm..after less than great ping times, I dear say the IRQ is more important
than the CRC.  We still have a ton of work hooking every thing up to the
net stack in fuzix.  And i definitely want to see how this performs before
a bunch of people do work for a nic card.  Jim, I guess if it work ok for
the C64 crowd, then I'm not too worried about  coco handling IP (and even
the eth CRC) itself.

Brett M Gordon
On Jun 8, 2016 1:06 PM, "Salvador Garcia via Coco" <coco at maltedmedia.com>
wrote:

> An important characteristic is the IRQ capability. However, this is only
> if the platform where it will be implemented can make use of it and the
> implications of using it. Another consideration is the chipside processing.
> For older, less capable computers, it is important that the chip do as much
> work as possible so that the main CPU is free to do other things.
>
> I kind of leans towards the rtl8019, but feel that I lack the necessary
> in-depth tech info on the chip and the Color Computer in  order to make a
> more informed choice. Regards, Salvador
>
>
>
>       From: RETRO Innovations <go4retro at go4retro.com>
>  To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>  Sent: Wednesday, June 8, 2016 11:38 AM
>  Subject: Re: [Coco] Fwd: IP packets on my coco
>
> On 6/7/2016 4:16 PM, John W. Linville wrote:
> > On Tue, Jun 07, 2016 at 12:40:29AM -0500, RETRO Innovations 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
> > Ah...well, that is very tempting.  What do I have to do to get one??
> >
> > John
>
> No big deal to get one prototyped.  The main question is:
>
>
> rtl8019 or cs8900a
>
>   * cs8900a pros
>       o a bit more code available from the 65XX crowd
>       o Slightly easier to produce, as I have all parts here.
>       o AutoCRC?
>   * cons
>       o No IRQ capability.  You must poll for all packets
>       o More expensive to produce (cs8900a is ~$10/pc)
>   * rtl8019 pros
>       o IRQ capability
>       o A bit cheaper to produce ($rtl8019 is ~$5.00/pc)
>   * cons
>       o A bit less code from the 6XXX crowd
>       o A bit tougher to produce, as I need to source the parts (not a
>         huge deal)
>       o No AutoCRC?
>
> I know the 65XX crowd laments the lack of cs8900a IRQ, but the design is
> proven.  So, I leave it up to the community.
>
>
> Jim
>
>
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