[Coco] CNR Engineering SP-3 (serial to parallel interface) - Manual?

Andrew keeper63 at cox.net
Sun Dec 23 21:23:05 EST 2018

Stephen, in regards to the interface, I just wanted something more in 
line with the "retro"-ness of the hardware; something that, had I the 
knowledge back then as a kid, I would have begged my parents for. There 
was no way back then I could have built an interface directly to the 
CoCo for such a project.

That said, I decided to go ahead and get a few of those chips; Jameco 
still carries them. I also grabbed some DIN connectors for other 
potential projects. As well as a couple of 5V 1F supercaps to replace 
the memory backup battery in a Model 100 I picked up recently.

One other project I've wanted to build (and probably should dig thru the 
Rainbow back issues to see what parts are needed) was the CoCoROS - 
which was basically another take on a bus interface for the CoCo; IIRC, 
the original goal of the project was for robotics control. Which is yet 
another vintage project I want to make - a computer-controlled Tomy 
Armatron. When I was a kid, I bought the Radio Electronics Magazine with 
and article detailing how to do this (and connect it up to a Vic-20 or 
C64). I even bought the motors from Radio Shack at the time for it, and 
still have them.

I always wanted to construct it, and now I have virtually all the parts 
needed. I just gotta quit being lazy and do it...

I recall in the Rainbow one or two vendors that sold converted 
Armatrons; one was on wheels and had a camera mounted on it. I'd love to 
do something like that myself (I have a DS-69b), maybe without the 
wheeled platform...

Andrew L. Ayers
Glendale, Arizona

> Message: 10
> Date: Sun, 23 Dec 2018 15:23:19 -0800
> From: Stephen Fischer<SFischer1 at Mindspring.com>
> To:coco at maltedmedia.com
> Subject: Re: [Coco] CNR Engineering SP-3 (serial to parallel
> 	interface) - Manual?
> Or you could wire a 6522 VIA into you CoCo.
> https://en.wikipedia.org/wiki/MOS_Technology_6522
> Lots of bells and whistles in that chip, my SYM-1(s) has several
> including the SYM-1 I put a 6809 CPU in to run Flex. (Synertek kit #
> SN00001) :D
> A really great chip, read the details, put two in at just about the same
> decoding cost.

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