Nonagra

[tnash]

Sometime over Christmas I started writing a rudimentary Picross/Nonagram game( see https://en.wikipedia.org/wiki/Nonogram ) which I accidentally called Nonagra when shortening the name for DFS! All in assembler, mainly as an exercise in writing something from scratch in 6502, rather than writing BASIC then converting line-by-line like I did for BOP7 (https://www.bbcmicro.co.uk/game.php?id=4385)

For one reason or another ( but mainly being distracted by a new-to-me Atari ST ) it got left and forgotten-about until I stumbled across it today.

I think the to-do list looks something like this

*general polish
*Saving/ showing progress - ie puzzles complete/incomplete
*Timer
*Editor/creator
*Loading packs of puzzles from disk
*Colour puzzles(maybe)
*MASSIVE puzzles with scrolling
*Sound effects? Music? I have no idea how to do background music but it would be nice
*fun stuff - characters with thumbs-ups and animated "well done" signs, always nice to get a bit of dopamine

If anyone has any good resources/ advice on a suitable approach to the timer I would be most appreciative. I'm guessing interrupts of some sort?

Current version ssd is attached. It seems to work in B-Em and on my BBC B - but untested on anything else. Any ideas/ feature requests/ bugs/ fun cartoon sprites to liven it up, will be very gratefully received.

Cheers
Tom