[Coco] drivewire serial port progress

Mike Pepe lamune at doki-doki.net
Mon Nov 30 19:38:17 EST 2009


I think the CoCo3 only enables the CART line for the first 8K of the external ROM by default, but I'd have to recheck the service manual to be sure about that.

> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-
> bounces at maltedmedia.com] On Behalf Of Arthur Flexser
> Sent: Monday, November 30, 2009 4:15 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] drivewire serial port progress
> 
> You might check if pin 37 of the edge connector of the Super Controller
> shows proper continuity to pin 26 of the EPROM socket, which is the
> line
> that controls access to the upper 8K.
> 
> Art
> 
> On 11/30/09, Roger Taylor <operator at coco3.com> wrote:
> >
> > At 10:49 AM 11/30/2009, you wrote:
> >
> >>  I
> > Now you ask, why do I use DriveWire when I have my own bitbanger
> drive
> > system?  Because I can't get my 16K ROM to work in the Super
> Controller!  It
> > just won't work.  It's like only the lower 8K is seen.  There's a
> jumper on
> > the board that I have no clue about and it didn't seem to help any.
> As soon
> > as CoCoNet boots up and is scanning the ports for available devices
> (you can
> > see this on the text screen), the first call to the upper bank causes
> a
> > crash.  Yes, I'm doing it the right way.  The ROM works in any
> socket-based
> > pak I've got but the Super Controller.
> >
> > --
> > ~ Roger Taylor
> >
> >
> >
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> >
> 
> --
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> http://five.pairlist.net/mailman/listinfo/coco




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