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From: gsm@mendelson.com (Geoffrey S.
To: All
Subject: Re: Null modem cable and/or ada
Date:Sat, August 25, 2007 09:07 PM


sampsal@gmail.com wrote:
> I've got an old SE/30 that I want to hook up to the Internet. Now the
> machine has no built in Ethernet card (I've looked and the SE/30
> specific ones are like pixie dust) and only has those funky little 8-
> pin serial ports on the back.
>
> I figured I could just give it a PPP connection from another box IF I
> could find an adapter from the 8-pin port to a normal DB9 male port,
> and then stick a null modem cable between that and another box.

That would IMHO suck. The most you can get out of it is 9600 bits
per second unless you add flow control and can get it to work,
then you can go higher, but your throughput won't get a lot
better.

HOWEVER if you can get an Mac with an ehternet card, you can network
them with a "localtalk" (orignal know as AppleTalk) network. That
runs at 250k bits per second.

To use it for TCP/IP, you will have to find a copy of the elusive
AppleTalk Internet Router program, which was NOT free, or a
commercial program:

http://www.sustworks.com/site/prod_ipr_overview.html

They have a demo mode which runs for a short time.

On the other hand, I have a SCSI ethernet adaptor on my SE. It was
originaly designed for a Powerbook, but it works fine.

The company that made it was bought out by Intel, but if you look
around on their site, you can find the drivers.

If you want to do it with a PCI Mac without an ethernet card.
the RTL8139 ones are really cheap and drivers are included on
the disk and available from RealTech's web site.


Geoff.

--
Geoffrey S. Mendelson, Jerusalem, Israel gsm@mendelson.com N3OWJ/4X1GM
IL Voice: (07)-7424-1667 U.S. Voice: 1-215-821-1838
Visit my 'blog at http://geoffstechno.livejournal.com/


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