[Coco] 2 Meg memory problem

[Christopher R. Hawks]

On Tue, 31 Dec 2019 21:46:40 +0000 (UTC)
Mark Marlette <mmarlette at frontiernet.net> wrote:

> Chris
> Can you please provide the exact test case and I will try and
> duplicate it here. Thanks
> Mark
> 
> Sent from Frontier Yahoo Mail on Android 
>  
>   On Tue, Dec 31, 2019 at 3:10 PM, Christopher R.
> Hawks<chawks at dls.net> wrote: I'm seeing a strange problem with my
> CoCo3 running a Cloud9 2 Meg memory board.
> 
>     When I searched online for similar problems, I found a message in
> the CoCo facebook group describing something similar. BUT, the problem
> I'm seeing is only with screen types 7 and 8 running under NitrOS9 (at
> double speed). (NitrOS-9 updated yesterday) I can create and use
> screens up to type 6 (16k of memory), but screen types 7 and 8 (32k
> of memory) crash the system. Even a 'wcreate /w1 -s=8 0 0 40 24 1 0
> 0' from the command line crashes the system. 
> 
>     If I POKE &HFF9B,&H80 (disable 2 meg) before booting, the bigger
> screens work fine.
> 
>     Any ideas, suggestions, or guesses? I need 320x240 in 8 colors.
> 
> Thanks!!
> 
> Christopher R. Hawks
> HAWKSoft

Mark (and all):

    Simplest case:

1) boot NitrOS-9
2) enter 'wcreate /w1 -s=8 0 0 40 24 1 0 0' at the command prompt.
3) NitrOS-9 crashes.

    If you use -s=6 or less for the screen type, NitrOS-9 doesn't crash
and you can start a shell (or program) in the window named (/w1).

    Happens with an old version of NitrOS-9 (3.3.0 beta from 2014),
the latest HG pull of NitrOS-9, and the latest EOU (use /w3, /w1 and /w2
are already in use).


Christopher R. Hawks
HAWKSoft
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