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

[Bill Pierce]

 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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