THIS ...
http://arstechnica.com/information-technology/2015/08/surfing-the-internet-from-my-trs-80-model-100/
... is what I'm going to use the Raspberry Pi I've got lying around in my house
for.
And I'm very interested in DL for the Raspberry Pi. I think you should describe
how you did this, how you use it, and publish it somewhere on the 'net. And for
reference, send it to Bitchin'100... ;-)
Greetings from the TyRannoSaurus
Jan-80 """""
@ work ( @ @ )
--------------.ooo--(_)--ooo.---
Be green, read from the screen!
From: M100 [mailto:[email protected]] On Behalf Of Mark Wickens
Sent: donderdag 22 oktober 2015 09:53
To: Model 100 Discussion
Subject: Re: [M100] An article about the TRS 80 Model 100
I'm not sure why 9600 baud is such a magic number but I've had *so* many
devices now that won't talk sensibly above that speed, even modern kit.
I have a model 200 that I would like to get round to modernising, but there are
too many projects in my head and not enough time!
Regards, Mark
On 22 October 2015 at 08:11, <[email protected]> wrote:
Hello,
It was that article that got me to dig out my M100 and a 'spare' raspberry pi
(a B+) I had sitting around. I had played with the m100 and the first pi I had
but that project fell by the wayside. I connect in a slightly different way
since I had been connecting the pi to my other machines via the GPIO bus and a
USB to serial adapter. So (to me) it seemed logical to try the M100 and the
GPIO bus.
This meant using a level shifter (the pi is 0/3.3 v, I think) and RS-232 is
-12/+12. I found a couple of pi sites that talked about the MAX232 chip, and I
built a little adapter using this chip from a kit.
The pi and the M100 work fairly well together. There is no hardware
handshaking, but at least raspbian and a recent version of arch both had
xon/xoff handshaking as default on /dev/ttyAMA0 (the GPIO bus serial port). At
19200 baud things still got garbled but 9600 is just fine. I made my own null
modem with some db9 and db25 connectors and a soldering iron.
I even compiled dl (the linux version of desklink) and I can use the pi as a
mass storage device. I still haven't figured out how to end the dl program
from the M100, but the pi is fairly robust and with another pi (my 3g
modem/wifi hotspot) we just unplug it when we want to turn it off. I could
probably also use a timer to automatically end dl after a fixed time but I
haven't gotten around to trying this.
Jonathan
On Wed, 21 Oct 2015, Duane Calvill wrote:
While browsing the internet. I was found this article. Just wanted to pass
it on to other to read.
http://arstechnica.com/information-technology/2015/07/back-to-the-future-the-trs-80-model-100/
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