[Coco] So is this a G board?

[Mark Marlette]

That would be good for 'future' products as well.




________________________________
 From: Luis Antoniosi (CoCoDemus) <retrocanada76 at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Friday, June 28, 2013 10:54 AM
Subject: Re: [Coco] So is this a G board?
 

Gonna try tonight. I'll take a photo of the caps if you want to document
this "issue" on sIDE manuals.




On Fri, Jun 28, 2013 at 11:35 AM, Mark Marlette
<mmarlette at frontiernet.net>wrote:

> Darren,
>
> This is a good point.
>
> Luis you could be getting some bus contention issues if in MPI and FD
> ghosts to FF5x region....If no MPI, SLENB* goes back to the CC3's 138
> decoder I ***think*** been awhile...2004... :) and it removes an enable and
> forces all decode to not occur.
>
> Thus the flakyness.
>
> SLENB* removes all other devices from the bus and allows the cartridge to
> take over.
>
> The cap would delay this and the sIDE would think it is all clear......
>
> Regards,
> Mark
>
>
>
>
> ________________________________
>  From: Darren A <mechacoco at gmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Friday, June 28, 2013 9:00 AM
> Subject: Re: [Coco] So is this a G board?
>
>
> On Fri, Jun 28, 2013 at 5:09 AM, Retro Canada wrote:
> > but why the superide hangs here?
> >
>
> You may want to try disabling capacitor C77 on the motherboard (clip
> the leg closest to the cartridge port).  This capacitor tends to cause
> problems with cartridges that use the SLENB* signal (like SuperIDE).
> The "F' board (285) is the only one that has such a capacitor on the
> SLENB* line.
>
> Darren
>
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