Hello to everybody,
After a recent mini meeting at Nigel's house where Shaun successfully butchered some wires and a 1541 to make a temporary 80 column adapter using the A22 board, I decided to do a more thorough test of the device. Some of you will already be aware of the results but for those that don't here is the outcome so far.
(1) It works in full colour / 80 column mode - but not 100% accurate yet.
(2) The Intensity line from the RGBI is not connected yet and this is causing some distortion in full screen applications (such as GEOS, Wheels, etc).
(3) It is not for the beginner or faint hearted and is not yet a 'plug and play' device but that is the ultimate goal.
(4) Adjusting the colour balance of the RGB to get a viewable screen is a nightmare.
For those of you who are interested I will be compiling a ZIP file with some pictures, screeshots and descriptions. Just drop me an email and I'll forward it onto you. Allan

Sounds interesting Allan It's gotta be when you mention the word "butchered"

Hi Guys,

I finally have some time to myself. I spent all yesterday trying to simplify the
C=VGA into a single cable (RGBI>SVGA), unfortunately schematics for the
RGBI>SCART cable do not work on the SVGA socket so that has been shelved for
now.

RGBI>SCART = Already several schematics available, more testing later to produce
a good quality output.
RGBI>SVGA = Not feasable yet, more testing late - I WANT this one
RGBI>SVIDEO = Working, prototype units later this week.
RGBI>Composite = Not viable as the output signal quality is very poor.

As most LCD panels can be bought with SVGA & SVIDEO I think the best thing is to
concentrate on the SVIDEO adaptor we already have as this seems to be the most
workable and adaptable. Despite my best attempts I can't get the output 100%
correct but the current configuration is pretty close so I'm going to build a
couple (from Nigel's) and tidy it up a bit so it looks nice. If its okay with
you Nigel I will send one to you and one to Shaun. That leaves me with my two,
the one I butchered for the test rig will stay that way for future testing and
the other one I will try to make look like a finished project.

I'm busy tomorrow but this afternoon I'm going to set up the existing adaptor
test platform and remind myself how it all works, then on wednesday I'm going to
build several units (hopefully boxed) and send them to you both for testing
later this week

Make sure you guys have access to an LCD with svideo, preferably more than one


Meeting up, I'm okay for a meet up later this month but I just have to make sure
I'm not working or on kid duty !

All the Best, Allan