[Coco] 64/80 column version of Dynacalc?

[Tony Jewell]

Hi all,

I've got a Dragon with a Compusense DragonPlus card installed -
http://archive.worldofdragon.org/index.php?title=Dragon_Plus - it used to
be super rare, but recently a few have resurfaced and there's enough
interest in them that a clone board should soon be available. It gives us
80 columns via an MC6845 - similar to the Word-Pak for the Coco (although I
think that used a different chip?). We have OS-9 and Flex drivers for it,
and although there must have been software that supported it back in 1985,
it seems to have disappeared - hence I'm wondering if anyone in the Coco
world can help us out! Currently OS-9 software runs, but is stuck at 51
columns.

Cheers, Tony

On 18 May 2018 at 22:59, Bruce W. Calkins <brucewcalkins at charter.net> wrote:

>
> On 05/18/2018 02:40 PM, rcrislip wrote:
> > On Fri, 18 May 2018 11:24:54 +0100
> > Tony Jewell <tonyjewell at gmail.com> wrote:
> >
> >> Hi - I'm running it under OS/9, but I should have mentioned I'm
> >> running it on a Dragon too. I'm wondering if the versions of OS/9
> >> that I'm seeing are all 'tweaked' for the 51 column display that
> >> comes with our OS/9 version. Where did you find the version you're
> >> running at 80 columns? I'll grab that and see if it works!
> >>
> >> Many thanks, Tony
>
> <Snip>
> >>
> >
> > OK, That explains it to me. You're running OS9 V1 for the Dragon
> > equivalent of the  CoCo2 which has at most 64k. I know of no way to do
> > 80 columns on that machine. Other might. Anyone???
> >
> There is a modification using the graphic screen to have OS-9 using 51
> columns on a CoCo 1/2.  It required Level 1 Revision 2 and some
> manipulation of drivers.  It has been nearly 15 since I had that setup
> running, so the details are a bit foggy now.  That said; the CoCo 1/2 and
> dragon used the 6847 Video Display Generator, 80 columns is not possible.
> Now there was the Word-Pak that used a different Video Display Generator
> that defaulted to 80 columns.  However that also needed drivers for OS-9.
> Bruce W.
>
>
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