[Coco] Serial to Ethernet

[Rod Barnhart]

I'm setting up tcpser on a RasPi to emulate a Hayes modem, and have a
max3232 chip to convert the RasPi's serial to RS232. I'm in the process of
stuffing it into an external 56k modem's case. When I am done, I'll have an
external TCP to serial modem that costs less that the 56k modem I gutted
originally cost, even if I include a wifi dongle ;)

I wish I had a physical coco to test it on... My collection was lost in a
series of moves a long time ago... Do any of the emulators (other than
Keil's) support redirecting the emulated bitbanger (or RS-232 pack) to your
PC's actual serial port?

Rod


On Feb 10, 2015 10:04 PM, "Allen Huffman" <alsplace at pobox.com> wrote:

> Chris — nicely done. That’s exactly the concept.
>
> Arduino’s Ethernet library has a bug that I patched (not sure if it’s been
> fixed officially) with how it handles multiple connections, but with that
> done, we could even handle four incoming telnets, and multiplex them the
> way DW does. That page on my site is the #1 most viewed page (though that
> usually only means 50-150 per day) but almost no one ever comments on it so
> maybe they don’t like my solution and they leave irked ;-)
>
> By the way, I have a fairly complete telnet server implementation that
> handles all the HAS/HAS NOT/ARE YOU THERE/etc.
>
>
> http://subethasoftware.com/2013/04/15/sub-etha-softwares-arduino-telnet-server/
> <
> http://subethasoftware.com/2013/04/15/sub-etha-softwares-arduino-telnet-server/
> >
>
> It has extensive debugging support that can be compiled out — it will
> print all the codes like [ECHO] and [TRANSMIT-BINARY] and really helps
> understand this ancient protocol. I had a blast digging through RFCs to
> figure it all out since the servers I found were not even eating the
> control sequences and thus would inject garbage in to the data stream from
> time to time.
>
> I just ordered some TTL->RS232 boards to do some testing with on a real
> CoCo, so maybe I will have something to report/share next week.
>
>                 — Allen
>
>
> > On Feb 10, 2015, at 7:20 PM, Chris Ahrendt <chrisahrendt at bellsouth.net>
> wrote:
> >
> > I actually have a better idea that I floated back about 8 months ago...
> >
> > Just need the following:
> >
> > Cart interface.... which I think was being sold on ebay... or even make
> a Y adapter so you can plug in the disk adapter.  the other side plugs into
> an arduino (Yun or regular with either a wired ethernet or the wireless
> adapter.)
> >
> > Then the following sketch:
>
> Allen Huffman - PO Box 22031 - Clive IA 50325 - 515-999-0227 (vmail/TXT
> only)
> Sub-Etha Software - http://www.subethasoftware.com - Established 1990!
> Sent from my MacBook.
>
> P.S. Since 4/15/14, I have earned OVER $600  in Amazon gift cards via
> Swagbucks! Use my link and I get credit:
> http://swagbucks.com/refer/allenhuffman
>
>
>
>
>
>
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