| Star Wipes | These are from Total Replay by 4am and qkumba. It looks really nice but takes immense amount of ram (16k for star data) and trashes the entire zero page. |
| Horizontal Scrolling | This is based on the code from the Driven demo, but optimized a bit and also modified so it sort of can handle full 6-color scrolling (still some issues with that). Took another 512 bytes of lookup tables for that. As a reminder, no hardware scroll on Apple II so it happens all in software. |
| Music | The music is based off of the "Jingle Bells" demo from old Casio (or in my case, Radio Shack) organs. (Which as part of this research I realized that after 30 years my Concertmate 370 has additional songs as an easter egg). I had trouble finding sheet music for this, but ToyMusic on youtube had posted a Synthesia visualization that I reverse-engineered into a pt3 file. |