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

[David Ladd]

Rogelio,

So you will have to manually use the repo to build new disk images with the
sources that are up on sourceforge.net now.

So far with L. Curtis Boyle going through the code and testing we have done
we have most of it working.

So the strange issues with the set point and erase point still do strange
things, but if you load GrfDrv before issuing any graphics commands $15-$1F
then set point and erase point seem to work fine.

Otherwise Curtis has some ideas for possible speed optimizations for level
1 VTIO and GrfDrv, but that will come later as time permits.

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| David Ladd a.k.a. PacoOtaktay a.k.a. Drencor                          |
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| Do you have your CoCo 3 yet?                                          |
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On Wed, Feb 7, 2018 at 5:31 PM, Rogelio Perea <os9dude at gmail.com> wrote:

> On Wed, Feb 7 2018, L. Curtis Boyle wrote:
> ​<cut>​
>
>
> Good!
>
> My experience with OS Graphics on Level 1 comes mostly from release 2.x
>
> Years ago I had played with some routines in Basic09 with release 1.x, and
> when I upgraded to 2.0 I was surprised to see none of my programs worked,
> kept getting a Module Not Found Error, that was until I got to *fully* read
> (yes, bad boy here) the manual addendum for 2.0 where it stated the changes
> in the graphics management with the requirement to have GRFO to be loaded
> either with the Boot or manually prior to  doing anything with graphics,
> Basic09's GFX included.
>
> So on stock OS9 Level 1 v2 the system does not automatically load GRFO when
> first needed (as Basic09 would load GFX upon first call); the GRFO module
> needs to be in memory already.
>
> I'm curious to know if GRFO module pre-load scheme was also to be followed
> by NitroOS9 or has the functionality been implemented so the OS loads it
> once the graphics function is called.
>
>
> -- RP
>
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