[Coco] Is there any coco3 software that can actually use 8 Meg ?

coco at jechar.ca coco at jechar.ca
Fri Sep 12 22:18:43 EDT 2025


What about sound I was wondering if I could play a 5 Meg wave file from 
memory ?

On 2025-09-12 22:04, Bill Pierce via Coco wrote:
> 8 meg currently can't be used in NitrOS9 (legally), as the page map for 
> the graphics pages would be too large. GrfDrv would have to be enlarged 
> to 16k to accomplish this. 2 meg is the limit, and yes, NitrOS9 will 
> use the extra 3 meg memory and software has been written to use it. My 
> "MShell" is one example of this.
> BUT, using machine language in RSDOS, it's fairly easy to implement. 
> Back a few years ago, I wrote a horizontal/vertical/diagonal scrolling 
> demo for the 16 color screen. It scrolled (smoothly) through a graphics 
> screen 3 pages wide and 10 or 12 pages high, and using the joystick, 
> you could scroll in all directions, even diagonally. I never expanded 
> to using any sprites or collision, but I used the converted screenshots 
> of the first level of Nintendo's "Tiger Heli" as my terrane. It was 
> pretty cool and (I think) used about 4 megs for the screens (preloaded 
> at the start). I could easily have gotten to 8 meg of screens, but that 
> was the size of the Tiger Heli level.
> The video is in the Coco Facebook Group's video section (I'm pretty 
> sure) or just search the group for "horizontal/vertical scroll demo" 
> and you should find my post. I may have even uploaded the demo disks 
> (no sources) to the Coco FB files section (I don't remember if I did).
> 
> Bill P.
>     On Friday, September 12, 2025 at 03:38:54 PM EDT, coco--- via Coco 
> <coco at maltedmedia.com> wrote:
> 
>  All
>   I have heard that some coco 3's have been upgraded to 8 Meg Memory 
> and
> it is an option for the Vcc emulator
>   but is there any software that can actually use 8 Meg ?
> 
> Charlie
> 
> 
> 
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