Hello all,
I just want to share the hobby OS that I've been developing over the past year and a half: G-DOS
Link to the G-DOS GitHub repository
It's a 32-bit ROM-native OS that I initially made for my m68k/68030 based homebrew computer.
I designed it with portability in mind; it currently supports the m68k, arm, and PowerPC architectures, with 6+ platforms implemented.
Some highlights:
Custom libc, shell, and machine monitor
Disk drivers for ATA, ramdisks, and romdisks
ISA driver for CGA graphics output
PS/2 Keyboard driver, and several serial drivers
I've treated G-DOS as my sandbox for playing with various random ideas. It's not intended to be a serious OS for real use, but more as a playground for my low-level coding.
If you want to try running G-DOS, there are instructions on the GitHub page. I warn that I haven't tested the build system for portability that much, and it will probably have cause trouble.
I'm sharing this less for help, and more just as a resource for others, since it targets more esoteric hardware.