[Coco] Chromasette's Nauga on disk

[Paul F]

For those of you who may have been a fan, I modified the original game "The 
Realm of Nauga" from the August 1982 issue of Chromasette on tape, to run in 
DECB.

The original version used a small ML subroutine to generate the 4x3 game grid. 
The ML subroutine was hardcoded to use the upper part of memory on a 16k CoCo 
and with the introduction of DECB, the cassette version did not have enough 
memory to run - hence an ?OM error. In addition to the OM error, the ML 
subroutine also tried to cache the game grid starting at $600 which was fine for 
non-disk BASIC, but DECB uses $600-$989 for variable storage. I shifted the 
caching of the 4x3 game grid by 2048 bytes and modified the game code 
accordingly. I've included the original as well as the modified code on the 
downloadable .DSK image.

http://www.fiscap.com/files/NAUGAFLP.DSK

On a semi-interesting side note. I picked up and installed a new ATI HD6970 
video card over the weekend. I find myself having more fun playing the 
ASCII-based Nauga in MESS than I do the high-powered 3D games for which I 
originally purchased the 6970 :)

Let me know if you run into any issues with the modified code.

Enjoy.

Paul