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C128 VGA adapter released at CommVEx v11 2015

RobertB

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John Carlsen's C128 80-column Video Digital-to-Analog Converter was released at CommVEx v11 2015 last weekend. Along with Jason Wright who released his CGA-to-RGB adapter, John's device was shown to the crowd and to the videocamera. Expect their videotaped talk to be posted soon! John's C128 VGA adapter was sold at a CommVEx price of $40 US, discounted from its on-line price of $50. It works in conjunction with the Gonbes GBS-8220 video converter which is not included in the price but is available from eBay with prices as low as $18.59 currently.

John's C128 VGA adapter webpage has been updated with the latest photos - http://www.bit-c128.com . Contact John at the e-mail link there.

Leaving Las Vegas today,
Robert Bernardo
Fresno Commodore User Group
http://www.dickestel.com/fcug.htm
 

ajacocks

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Middletown, Maryland USA
Robert,

Do you have a reference for the changes made to Richard's design? Did you adjust the resistor values? Or, is this more of an SMD straight-conversion?

Comparative screenshots would be good to see, and your timing is very good, as I just stopped selling Richard's original design, due to the birth of my first child.

Thanks!
- Alex
 

RobertB

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Do you have a reference for the changes made to Richard's design? Did you adjust the resistor values?
I myself don't have all the changes that were made; only John would know the exact changes. I do know that resistor values were changed to produce more accurate colors (and also something else was changed to produce less "ringing/fringing" around the displayed text).
Comparative screenshots would be good to see...
If you type in the search for "VGA" at http://blog.retro-link.com , you can find all the info I have made in various postings, including screenshots.

Back at work,
Robert Bernardo
Fresno Commodore User Group
http://www.dickestel.com/fcug.htm
 

RobertB

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On Wed, July 22, 2015 5:27 am, I wrote:

> John's C128 VGA adapter webpage has been updated with the latest photos - http://www.bit-c128.com . Contact John at the e-mail link there.

John's website has been updated with ordering information, including the convenience of Paypal. For those who prefer, you can order his C128 VGA adapter through Amazon at

http://www.amazon.com/dp/B013HI3MRE

Truly,
Robert Bernardo
Fresno Commodore User Group
http://www.dickestel.com/fcug.htm
 

RobertB

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Jason did not put up a webpage for his product. He gave one away at CommVEx and sold two on eBay. The original eBay posting(s) can be found at

http://www.ebay.co.uk/itm/331571328546

On another forum (I forget which), he said that he wasn't going to continue producing them, because they were so labor-intensive. He does admit that the dark gray in his adapter turned out to be black (which he showed in front of me and John Carlsen at CommVEx), but he says that his red is better than the Carlsen adapter.

Truly,
Robert Bernardo
Fresno Commodore User Group
http://www.dickestel.com/fcug.htm
 

RobertB

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Messages
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Visalia, California
John Carlsen's C128 80-column Video Digital-to-Analog Converter was released at CommVEx v11 2015 last weekend.

(snip)

John's C128 VGA adapter webpage has been updated with the latest photos - http://www.bit-c128.com .
After an inquiry from a FCUG member, I looked up John's website and found it to be updated! The website address has been subtly changed to

http://www.bit-c-128.com/

He now has categorized the site into multiple pages - Home, Uses, How to Buy, Quick Start Guide, History, and Contact. Interestingly, under History, he notes that the BIT-C-128 Video DAC is now in its second production run after having strong Christmas sales.

He even gives CommVEx a plug,
Robert Bernardo
Fresno Commodore User Group
http://www.dickestel.com/fcug.htm
July 30-31 Commodore Vegas Expo v12 -
http://www.portcommodore.com/commvex
 
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