hobby kernel in zig

WARNING: this project was written for zig 0.5, it doesn’t compile for future versions

features

• 80x25 frame buffer
• ps2 keyboard driver
• terminal console
• lspci
• x86
  • MMU
  • interrupts
  • pit timer
• scheduler
  • time slice preemption with round robin
  • sleep()
  • block()/unblock()
• Storage
  • IDE ATA driver (in progress)

dependencies

• ziglang 0.5.0

compiling

zig build compiles and links the multiboot kernel (without a bootloader)

running

• ./qemu.sh start
• ./qemu.sh monitor
• ./qemu.sh quit
• gdb (see provided .gdbinit)

Notes

interrupt call chain

interrupt -> idt[n] -> isrN -> isrDispatch -> handlers[n] (default unhandled())

References

• zig microkernel: https://github.com/AndreaOrru/zen
• scheduling tutorial: https://wiki.osdev.org/Brendan%27s_Multi-tasking_Tutorial
• booting/paging/interrupts: https://os.phil-opp.com/