C64 for MEGA65 - Alpha 22 for Version 6

Alpha 22 adds NTSC support for the C64 core:

In NTSC mode the core is an NTSC C64 (VIC-II 6567R8, NTSC clock) and resets automatically when you switch. HDMI gets its own 59.94 Hz modes (720p, 4:3 480p, 5:4 480p) including "HDMI: Flicker-free"; the analog output ("VGA") is at the true speed which is 59.83 Hz. IMPORTANT: FLICKER-FREE NEEDS TO BE TURNED OFF WHEN YOU USE ANALOG ("VGA").

As a German, I was a PAL-C64 kid. So unfortunately I have no real first hand experience with the NTSC mode. This is where YOU are needed - please test thoroughly: Colors? Speed? Sound? Faithfulness? Some "non-obvious" tests include: NTSC cartridges (hardware and simulated), NTSC REU, etc.

If you need some inspiration what to test - a bunch of people educated me a while ago - see this conversation: https://discord.com/channels/719326990221574164/794775503818588200/1395335606954889287

P.S. Alpha 22 also adds a first experimental version of writing to physical 1581 disks using the MEGA65's disk drive. This is not yet very well tested nor field proven so use it at your own risk, but feel free to test and report bugs of course 😉

LALA PROLOGUE - MEGA65 VERSION

The game is the port of a PC DOS VGA 256 colours game by the Mojon Twins to the MEGA65,
but that one had no scrolling, it was a flip screen game.
I implemented multi-directional and parallax scrolling to improve the gameplay.
the game is made of a big level of 30 screens to explore.

by Digital Monastery / Onslaught Games

Programming by Majikeyric
Graphics by Na_Th_An
Sound Fx by Na_Th_An
Music by Uctumi

Original game concept by The Mojon Twins
https://files.mega65.org?id=9d8de7f1-12c6-4613-a2b0-4e5b07b6d47f

Just for heads up , I'll aim for the next BASIC 65 meeting at:

• Time: 9:30 CEST
  
  • (but it may be a little later if family commitments get in the way)
    
• Date: 24th October 2026
  
• Venue:
  
  • This time, I'll use the "Commodore Users Europe"'s voice channel for this meeting (as it's grouped with other meetings for other BASIC variants there)
    
  • You'll first need to join their discord server with this invite link:
    
    • https://discord.gg/y3UR6NmYs
      
  • Ask in the # general channel there to register for BASIC 65 study group
    
  • Admins there will then give you access to join the meeting on this channel:
    
    • https://discord.com/channels/1150086589452648518/1555600812133318656

Happy for it to take an informal, unstructured form, and folks just share/talk about what BASIC 65 dev stuff they're up to, any challenges they face and we can ponder them through, screen-share and walk through ideas for solutions.

Will aim to keep this up fortnightly for the duration of the "Commodore Users Europe" BASIC study group event.

NOTE: Their discord server also has a text-channel for BASIC 65 too, in-case you want to text-chat with anyone on their server about BASIC 65 stuff:

• <https://discord.com/channels/1150086589452648518/1529400044577493022>