Sinclair QL Core for the MEGA65 – Version 1.0 🎉
Version 1.0 is out! Milestones 1-3 are all done and verified on real hardware: native boot, selectable RAM (128k/640k/1024k), selectable CPU speed (native/16/24MHz/Full), and two microdrives with read/write and automatic background save.

.cor files for R3 and R6, plus a README with real hardware screenshots, are in the GitHub release: https://github.com/dfernande132/QL4M65/releases

Full write-up in the thread: Sinclair QL Core QL4M65. Feedback and bug reports very welcome!

AMIGA 500 OCS Version 2 Alpha 8

The core can now read copy protected disks such as Rob Northen Copylock protected disks. Cannon Fodder (see photo) is one example, but there are more, for example Terminator 2, The Chaos Engine, New Zealand Story and many more.

Our original implementation (based on MiniMig) did not correctly implement a Paula register that is very rarely used by any Amiga software, but some copy protections (for example Rob Northen's) use it to precisely time the length of specially written sectors on a disk. This is now fixed, which means the floppy disk read implementation improved now a lot when it comes to faithfulness to a real Amiga.

VERY SPECIAL THANKS go to @dejavu4u2 for reporting the bug and for helping me to debug and to test this.

💫 Dan's #mega65 Digest for July 2026: Calypsi C, part 3: Making large programs. https://dansanderson.com/mega65/calypsi-part-3/

A working memory map dispatch mechanism for writing large programs in C! Mixing assembly language and C in a single project, and tricking Calypsi into calling functions across an arbitrary number of 24 KB regions of code that can be spread across all six banks, or even swapped from disk or Attic RAM.

Get the Digest by email, web, or RSS: https://dansanderson.com/mega65/
Find the audio version wherever you get your podcasts. Search for: "Dan's MEGA65 Digest"
Support the Digest: https://ko-fi.com/dddaaannn