ZX81 video mod and bus extention cable

From: Glen Goodwin <acme_at_gbronline.com>
Date: Sun Dec 5 11:29:15 2004

Hello Jim --

I have a scan of the video circuit mod for composite
output -- if you want it, contact me offlist and I'll
email it to you.

As far as a bus extention cable, I use old 50-conductor SCSI cables.
For the cable ends, my junk box is full of suitable scraps, but if yours
isn't, you can use the connector from a dead 16KB RAM pack for
one end, and any surplus place should have an appropriate piece
for the opposite end, which can be cut down to size and key-notched.

Later --


----- Original Message -----
From: Jim Brain <brain_at_jbrain.com>
To: Glen Goodwin <acme_at_gbronline.com>; General Discussion: On-Topic and
Off-Topic Posts <cctalk_at_classiccmp.org>
Sent: Tuesday, November 30, 2004 9:52 PM
Subject: Re: ZX81 denigrated! (was Re: Approaches to projects)

> Glen Goodwin wrote:
> >One transistor + one resistor + one monitor = rock solid display.
> >
> >
> Any links? A dormant unit sits on the shelf.
> >Scraps from the junk box and 30 minutes time will yield a cable which
> >provides enough distance from the ZX81 to eliminate the "wobble"
> >problem.
> >
> >
> Again, links?
> Jim
> --
> Jim Brain, Brain Innovations
> brain_at_jbrain.com http://www.jbrain.com
> Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!
Received on Sun Dec 05 2004 - 11:29:15 GMT

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