[Coco] COCO Video

[john dumas]

On 6/24/2013 12:52 AM, Mike Pepe wrote:
> John, you've probably been asked this before, but what do you think of the
> theory that the 6847 and 6883 were designed specifically for Tandy? The 6883
> in particular smells like a breadboard of TTL glue that got the old
> shrinkeroo into a 40 pin DIP.
The SAM (6883) *may* have been designed specifically for tandy.
But, my memory is that the VDG was not, but picked up by tandy
after the VDG was in production.....

The SAM may have been breadboarded to replace the glue logic
around the VDG and MPU. That might explain the persistent belief
by some that there was a VDG breadboard. I am unaware of any
real evidence that there was. If a VDG breadboard existed I was CHEATED!!!
A breadboard would have been a big help at the circuit design/layout 
phase.....



cheer,
johnd
>
>> -----Original Message-----
>> From: coco-bounces at maltedmedia.com [mailto:coco-
>> bounces at maltedmedia.com] On Behalf Of john dumas
>> Sent: Thursday, June 20, 2013 2:33 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] COCO Video
>>
>> On 6/20/2013 3:02 PM, Mike Pepe wrote:
>>> John, if anyone should have seen it in breadboard form, it should have
>>> been you!
>> Yeah, that's what I've always thought.
>> Of course, there was a lot that never found it's way down to the "grunts".
>> And the VDG project, more than any other at the time, was a prime example
>> of that. There surely was "stuff" going on in other groups - MOT was very
>> Bottoms-Up at that time - that never got well known in other groups.......
>>
>> I don't think Boisy could have picked a more difficult task - history
> wise, that
>> is........
>>
>>
>>
>> Now his Atari design (Liber809) work...WOW, that looks really tough.
>> And truly amazing.
>>
>> cheers,
>> johnd
>>
>>
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