[Coco] CoCo bus interface project

[Luis Antoniosi (CoCoDemus)]

oh yes I did the composite. I piggybacked an NOR gate 74LS02 on top of the
74LS04 (IC15) and used pin 10 as composite sync. I had to disconnect the
rgb's pin-10 (monitor id ? what is this pin anyway that says NC but in fact
is connected?) by opening R62 and R61.


On Mon, Apr 15, 2013 at 4:21 PM, Matthew Stock <stock at csgeeks.org> wrote:

> It *almost* worked for me without using the composite sync board, but not
> quite.  If you think it's a sync problem, I'd start there.  The schematic I
> reference for the composite sync is dead easy to make - I used the 74HC86
> for the XOR - don't know if the HC would make a difference vs LS in this
> circuit, though I wouldn't think so.
>   -Matt
>
>
> On Mon, Apr 15, 2013 at 4:14 PM, Luis Antoniosi (CoCoDemus) <
> retrocanada76 at gmail.com> wrote:
>
> > Yours looks the same as mine: GBS8200:
> > http://en.gonbes.com/product_detail.asp?menuid=94&id=22
> >
> > It will try the same at home. I use a 5V 2A wall wart but it keeps
> bouncing
> > the image and sometimes loses completely the sync. Thuis board accepts
> the
> > YCbCr from the Coco2 wich looks awesome but this bouncing thing made me
> > ditch it in the basement. I'll try to use it again.
> >
> > I found this article with interesting info.
> >
> > http://forum.arcadecontrols.com/index.php?topic=123399.0
> >
> >
>
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Long live the CoCo