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

[L. Curtis Boyle]

Unfortunately the repo is now all done in LWASM - so you have to assemble it on a PC or Mac. Some sources I think are still ASM compatible. 

Since VTIO isn’t that big, you may be able to fix it yourself - ASM only supported labels up to 8 characters, while LWASM allows longer ones. Find any that are too big, change them to smaller ones (don’t forget to change the label itself, and all references to it), and try assembling it again.

L. Curtis Boyle
curtisboyle at sasktel.net



> On Feb 14, 2018, at 9:44 PM, Rogelio Perea <os9dude at gmail.com> wrote:
> 
> On Sat, Feb 10 2018, David Ladd wrote:
> 
> 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.
>> 
> 
> My OS9 assembler noobness shows so bear with me.
> 
> I have tried assembling VTIO.ASM on both my CoCo 1 and 3 to no avail, both
> running NitrOS9 3.3 at their respective levels of course.
> 
> My directive has been:
> 
> asm /d1/vtio.asm o=/d1/vtio l > /d1/vtio.lst
> 
> Have the OS disk in /d0 and the VTIO work disk on /d1 - using the CoCo SDC
> 
> The LST file shows a lot of ERROR: BAD LABEL and ERROR: BAD INSTR entries
> from the very beginning of the assembly process. The resulting VTIO
> executable reports a Header Incorrect upon running IDENT on it.
> 
> I'm inclined to think I am doing something wrong here...
> 
> -- RP
> 
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