Porting Ilmenit's Mona to the Atari ST
Ever since I saw Ilmenit’s fantiastic, highly artistic intro Mona I have been entertaining the thought of making an Atari ST port. Here’s how it came into existence.
»Atari ST (and compatibles) IKBD ROM disassembly
Disassembly provided courtesy of The Paranoid/Paradox. Thank you and take it away!
»Bugziacs (or how I learned to ignore Z80 and do some fun stuff instead)
Sometimes you know you’re into a world of hurt, but you dive in head first anyway.
MC6850 ACIA
This is the official manual transcribed from PDF. Enjoy!
»Data structures using offsets
Or “How I Learned to Stop Worrying and Love My Tools”
»Yamaha YM2149 Manual
This is the official manual. Enjoy!
»Bugaboo usage
Intelligent Keyboard (IKBD) Protocol
This is the full manual. Enjoy!
»Blaster sprites, Advanced
Update on emulator issue, Oct 31st, 2018
Atari legend Nicolas Pomarède points out that it doesn’t really make sense to combine the NFSR and FXSR bits the way I do. And he’s right!
My mistake was relying on emulators while writing this, and using the NFSR and FXSR bits this way was the only way I could make it work. So…
Wanted!
Someone to figure out what is going wrong here. Please email me your findings at per@brainfish.net - thanks in advance!
v 1.04, Oct 23rd, 2018 - There was bug in X clipping when showing fewer than the 16 rightmost pixels. It displayed fine in STEem, which is why I missed it.
»The twist: making of
How does one make a demo with someone that has almost the opposite tastes as yourself?
