[Coco] CoHR doesn't support cursor position

Ken H. dragon.atv at gmail.com
Tue Feb 4 09:03:34 EST 2014 

I have now added the cursor on/off code to the patched CoHR (thanks Luis
for spotting this problem).

My patched CoHR  supports both the COVDG control codes and the CoHR escape
codes.
So far it looks like minted works fine, and so do Dynacalc (both Tandy and
Dragon versions) and Stylograph  (if you can spare enough free memory to
load them).
Here is a link to download the patched CoHR and VTIO source, as well as a
NitrOS9 disk image built with the updated modules (for CoCo2 with
Drivewire).
http://www.mediafire.com/download/wngomyo4wd8byfr/CoHR.zip

Let me know how it works for you.
Ken




On Tue, Feb 4, 2014 at 12:03 PM, Kip Koon <computerdoc at sc.rr.com> wrote:

> Hi Ken!
> This is an interesting development!  I run NitrOS-9 L1 on my Coco 1 in 51
> column mode as well.  I too noticed minted did not work, so I've had to
> edit
> my scripts on my Coco 3, then run them on my Coco 1.  When you get these
> patches finished, I would like to test them on a custom NitrOS-9 Boot disk
> also.  Once I figure out how to extend my computer desk another couple of
> inches, I plan to run my Coco 1 with all my old expansion goodies I use to
> run in my gray MPI.  I had an 80 column cartridge running in OS-9 as well
> as
> a ramdisk and a Seagate ST-225.  It was nice!  Anyway, keep up the great
> work updating NitrOS-9 L1 for us.  Thank you very much.  Take care my
> friend.
> Kip
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com]
> On
> Behalf Of Ken H.
> Sent: Monday, February 03, 2014 4:51 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] CoHR doesn't support cursor position
>
> I've got minted working as well with a custom CoHR which includes both the
> CoHr/GO51 escape codes and the Tandy COVDG control codes!
> Both code sets can be supported simultaneously. The only conflict is $0B
> which is erase to EOS on COVDG and Cursor Home on CoHR.  Erase to EOS is
> probably not used that much.
> Luis - I'll send you a copy for testing later on.
> Ken
>
>
>
> On Mon, Feb 3, 2014 at 7:39 PM, Ken H. <dragon.atv at gmail.com> wrote:
>
> > minted doesn't work because it uses the Tandy escape codes which are
> > different.
> > Though it shouldn't be hard to modify CoHR to accept the Tandy codes
> > as well.
> >
> >
> > On Mon, Feb 3, 2014 at 6:02 PM, Luis Antoniosi (CoCoDemus) <
> > retrocanada76 at gmail.com> wrote:
> >
> >> does minted work fine too ?
> >>
> >> On Mon, Feb 3, 2014 at 10:57 AM, Ken H. <dragon.atv at gmail.com> wrote:
> >> > Hi,
> >> > The CoHR level1 51 column driver source has full support for escape
> >> > characters (GotoXY, cursor positions, underline on/off, reverse
> >> > on/off
> >> etc).
> >> > For example   DISPLAY 1B 41 X Y  - move  cursor to position X(0-50),
> >> > Y(0-23).
> >> >
> >> > But this escape code feature has been broken in NitrOS9 for a long
> >> > time (did it ever work?)
> >> >
> >> > I have investigated this problem, and the bug is actually is the
> >> > VTIO module.
> >> > VTIO does not pass the 1B escape code to CoHR, and instead
> >> > generates a
> >> 246
> >> > (Not Ready) error.
> >> >
> >> > The following 4 line patch to VTIO provides a fix for this problem.
> >> >
> >> > Write    ldb   <V.NGChr,u are we in the process of getting parameters?
> >> >             bne   PrmHandl   yes, go process
> >> >             sta   <V.WrChr,u save character to write
> >> >             ldb   V.51EscSeq,u
> **<<
> >> > ADD: In Escape sequence?
> >> >            bcc   GoCo
> >> > **<< ADD: Yes, send to COHR
> >> >            cmpa  #C$SPAC    space or higher?
> >> >            bcc   GoCo       yes, normal write
> >> >           cmpa  #$1B
> >> **<<
> >> > ADD: COHR Escape Code?
> >> >           bcc   GoCo
> >> > **<< ADD: Yes, send to COHR
> >> >           cmpa  #$1E       escape sequence $1E or $1F?
> >> >
> >> >
> >> > The nice thing about this fix is that we can finally run Dynacalc
> >> > in 51 columns mode on a level 1 CoCo.
> >> >
> >> > The CoHR escape codes are based on the Dragon's GO51 display
> functions.
> >> > Therefore, Tandy's version of Dynacalc will not work, but the
> >> > Dragon version of Dynacalc (
> >> >
> >> http://archive.worldofdragon.org/archive/index.php?dir=Disks/Dragon/&
> >> file=Dragon%20Data%20Ltd%20-%20OS-9%20Dynacalc.zip
> >> )
> >> > works fine also on the CoCo.
> >> >
> >> > Even better, the STYLOGRAPH word processor (also on the dragon
> >> > archive) also finally works with this patch!
> >> > AFAIK, Stylograph (arguably the best wp for OS9), isn't otherwise
> >> available
> >> > for the CoCo.
> >> >
> >> > You do need a stripped down build of NitrOS9 to have enough free
> >> > memory
> >> to
> >> > run these programs.  I was able to run them with a minimal boot
> >> > disk
> >> with
> >> > 129 pages free.
> >> >
> >> > As far as I could tell this fix doesn't break anything else, but
> >> > before
> >> we
> >> > commit this change maybe someone else can test it out?
> >> >
> >> > Cheers,
> >> > Ken
> >> >
> >> >
> >> >
> >> >
> >> > On Mon, Apr 15, 2013 at 8:41 PM, Luis Antoniosi (CoCoDemus) <
> >> > retrocanada76 at gmail.com> wrote:
> >> >
> >> >> Hi,
> >> >>
> >> >> Why CoHR doesn't support home, cursors position and other terminal
> >> commands
> >> >> ? The only supported feature seem to be the the clear screen.
> >> >>
> >> >> It wouldn't be hard to implement them but I ask why it wasn't made
> >> before ?
> >> >> This kills completely its utility as no screen based program will
> >> >> ever
> >> run
> >> >> on it. I can't think why people would use CoHR if dynacalc doesn't
> >> >> run
> >> on
> >> >> it.
> >> >>
> >> >> Also, for CoVDG, it doesn't support line delete and insert 1F 30
> >> >> and
> >> 1F 31.
> >> >> We could make better applications for them if they were all
> supported.
> >> >>
> >> >> I think that I going to patch them :)
> >> >>
> >> >> Felipe.
> >> >>
> >> >> --
> >> >> Long live the CoCo
> >> >>
> >> >> --
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> >> >> Coco at maltedmedia.com
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> >> >>
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> >>
> >>
> >>
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> >
> >
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