[Coco] Graphics on NitrOS9 Level 1 v3.3.0 (CoCo 1)

[David Ladd]

Wayne,

DISPLAY C is used to clear the screen.
DISPLAY 12 is used to return to text mode.

The display command is all in HEX.

+-----------------------------------------------------------------------+
| David Ladd a.k.a. PacoOtaktay a.k.a. Drencor                          |
| YouTube: http://www.youtube.com/user/PacoOtaktay                      |
| YouTube Gaming Live: https://gaming.youtube.com/user/PacoOtaktay/live |
| Websites: http://dwladd.com     &     http://www.theterrorzone.com    |
| G+:  https://plus.google.com/113262444659438038657                    |
| G+:  https://plus.google.com/+DavidLaddPacoOtaktay                    |
|                                                                       |
| Do you have your CoCo 3 yet?                                          |
+-----------------------------------------------------------------------+


On Sat, Feb 3, 2018 at 6:09 PM, Wayne Campbell <asa.rand at gmail.com> wrote:

> I may be wrong, but 12 is the clear screen code under level 2. Is it
> different under level 1, or with graphics screens?
>
> Wayne
>
>
> On Feb 3, 2018 3:39 PM, "Rogelio Perea" <os9dude at gmail.com> wrote:
>
> > Took me a while to re-gain speed on my CoCo doings but here it goes.
> >
> > Following Curtis's idea of sending the GFX commands from the shell I
> wrote
> > the following routine:
> >
> > display 0F 00 05
> > display 13
> > display 7
> > display 15 80 60
> > display 7
> > display 1A 14
> > display 7
> > display 12
> >
> > Entered each DISPLAY command as a separate line for clarity, the 7 codes
> in
> > there just to provide an audio cue of each stage of the graphics commands
> > executing.
> >
> > DISPLAY 0F sets the 256x192 mode, buff on black color ser - per OS9L1v2
> > Addendum, command is run by CCIO, GRFO not needed
> > DISPLAY 13 clears the screen, run by CCIO
> > DISPLAY 15 sets the graphics cursor to dec 128,96 (center or screen), run
> > by CCIO
> > DISPLAY 1A draws a circle (buff) at graphics cursor location with a
> radius
> > of dec 20 - run by GRFO
> > DISPLAY 12 ends graphics and returns the memory to OS9
> >
> > This routine bombed with NitrOS9 Level 1 v3.2.8 (6809), I get the first
> two
> > beeps confirming the Graphics Mode is set and the screen cleared with the
> > graphics cursor set at the center, but upon the CIRCLE (1A) command the
> > system hangs and only a hard reset will return control of it. Routine run
> > perfectly fine under stock OS9 Level 1 v2
> >
> > What follows next is above my paycheck level, but from the little I can
> > gather is that there is a bug in NitrOS9 Level 1 - my shenanigans with
> GFX
> > under BASIC09 seem to stem from something not correctly ported over from
> > stock OS9 L1 into NitrOS9 L1.
> >
> > Again, OS9 L1 v2 split some of the graphics functions in CCIO into a
> module
> > named GRFO; there is no GRFO module under NitrOS9 L1 but there is a
> GRFDRV
> > in there... I wonder if that's the one not being called upon properly...
> > just guessing here.
> >
> > My bet is that if this gets fixed, the GFX problem reported earlier under
> > Basic09 will get squished as well :-)
> >
> >
> > -- RP
> >
> >
> > On Fri Dec 29, 2017 at 6:07 PM, L. Curtis Boyle wrote:
> > >
> > > Rogelio, can you try “manually” outputting the display string for the
> > >> graphics commands you are trying, just to see if it is the graphics
> > >> handling in Level 1 itself that is not working, vs just the GFX
> module?
> > >>
> > >
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > https://pairlist5.pair.net/mailman/listinfo/coco
> >
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>