If you're looking for Genesis documentation, check out PlutieDev... it has lots of well written, and concise documentation:
https://www.plutiedev.com/
There is also a twitter account which often posts info useful to genesis developers:
https://twitter.com/plutiedev
Genesis documentation site: plutiedev
Genesis documentation site: plutiedev
Chibi Akuma(s) Comedy-Horror 8-bit Bullet Hell shooter! // 「チビ悪魔」可笑しいゴシックSTG ! // Work in Progress: ChibiAliens
Interested in CPU's :Z80,6502,68000,6809,ARM,8086,RISC-V
Learning: 65816,ARM,8086,6809
Interested in CPU's :Z80,6502,68000,6809,ARM,8086,RISC-V
Learning: 65816,ARM,8086,6809