[Coco] No pixel wasted

Luis Antoniosi (CoCoDemus) retrocanada76 at gmail.com
Wed Sep 17 13:11:16 EDT 2014


I'm not targeting any cost right now. I will make this open so anyone can
build one.

I'm trying to acquire the knowledge and be free from any other vendor.

I have one of these cheap GBS8xxx board and this is the reason i'm doing
one myself. You get what you paid for. In this case this mean poor image.

It's enough for OS-9 80 columns but awful for any action scrolling game.
Try playing the Moon Rover game and look at the ground scrolling...



Luis Felipe Antoniosi



On Wed, Sep 17, 2014 at 12:48 PM, Kandur <k at qdv.pw> wrote:

> If it will be less expensive then what I bought,
> http://tinyurl.com/q3qkhka then I'd buy one too.
> Any ballpark idea price wise?
>
> Kandur
>
> Wednesday, September 17, 2014, 9:06:27 AM, you wrote:
> > I'm looking forward to this potentially becoming a product.  I'll verify;
> > but, I believe that I have an 87 GIME in my CC3 if you'd like someone to
> > test (Toronto area).
>
> > Shain
> > On Sep 17, 2014 9:26 AM, "Luis Antoniosi (CoCoDemus)" <
> > retrocanada76 at gmail.com> wrote:
>
> >> I reduced the speed from 229Mhz to 114Mhz, the SDRAM works better now:
>
> >> http://imgur.com/MY0ExuW
>
> >> It also fixed the artifact in coco1/2 graphics screen.
>
> >> But for coco3 games like roboco, thexder I still get some minor
> flickering
> >> in some areas. Like it generates those video modes with a slightly
> >> different pixel clock ? I have a 1986 GIME only.
>
> >> All the other resolutions are pixel perfect: 32, 40, 80 columns, pmode
> 1,
> >> 2, 3 and 4.
>
>
>
> >> Luis Felipe Antoniosi
>
> >> --
> >> Coco mailing list
> >> Coco at maltedmedia.com
> >> https://pairlist5.pair.net/mailman/listinfo/coco
>
> --
> Coco mailing list
> Coco at maltedmedia.com
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>


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