[Coco] MC6847 + Component video

[Joe Grubbs]

Replacing the RF box is one possibility, but I suppose creating a daughter card that plugs into the 6847's socket would also work. The latter would give the user the option of both composite and component. Not sure about cable routing though. Maybe a CoCo3 style header mounted underneath? Cutting the case isn't the best, but at least that would be on the underside




> From: zippster278 at gmail.com
> Date: Tue, 28 Apr 2015 20:12:36 -0500
> To: coco at maltedmedia.com
> Subject: Re: [Coco] MC6847 + Component video
> 
> You are thinking replacing the RF box like the composite boards?
> 
> It could also be designed to plug into the 6847 socket.  I think 2 layouts could probably cover
> pretty much any CoCo1/2.  Of course non-socketed motherboards would need a socket installed.
> Should be stackable with the External ROM board too.  :)
> 
> Not sure how to best position the output jacks/cables yet.
> 
> - Ed
> 
> > On Apr 28, 2015, at 7:18 PM, Joe Grubbs <jsgrubbs at hotmail.com> wrote:
> > 
> > Parts ordered!
> > 
> > Been thinking of ways to make this work without modifying the case. The best solution might be to use the mini-din to 5xRCA cable that is commonly used by Direct TV boxes. That would give RGB video + LR audio (dual mono of course), all without having to drill the case. Those cables only cost a few dollars on Amazon.
> > 
> > 
> > 
> > 
> > --- Original Message ---
> > 
> > From: "Zippster" <zippster278 at gmail.com>
> > Sent: April 28, 2015 9:11 AM
> > To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> > Subject: Re: [Coco] MC6847 + Component video
> > 
> > Great!
> > 
> > - Ed
> > 
> > 
> >> On Apr 28, 2015, at 7:32 AM, Joe Grubbs <jsgrubbs at hotmail.com> wrote:
> >> 
> >> We found a quad op-amp that should work nicely for this! :)  And since it's a quad, it will be the only active device required--no other opamps or transistors required. We have to order it and test it, but if it works it will be a super simple PCB
> >> 
> >> 
> >> 
> >>> Date: Fri, 24 Apr 2015 10:08:42 -0400
> >>> Subject: Re: [Coco] MC6847 + Component video
> >>> From: jsgrubbs at hotmail.com
> >>> To: coco at maltedmedia.com
> >>> 
> >>> Cool! We have three circuits to test. One of them is discrete and runs happily on 5v. The second uses commonly available opamps but needs an external supply or a dc to dc converter. The third uses a somewhat esoteric opamp from AD but it can run on 5v. It would be best to use commonly available parts though because AD is prone to discontinue products with little notice :-/
> >>> 
> >> 
> 
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco