acidicneko / discitix_kernel

A hobbyist kernel written in C!

Discitix Kernel

A hobbyist kernel written in C!

Note

This project is moving to a new repo, as it is being re-written for x86_64 architecture. It will be developed here from now I will make this repo read-only shortly.

About

The word, 'Discitix', has been derived from the latin word, 'Discite', which means "to learn". This kernel is beign developed by me for fun and to learn about low-level world of computers. Discitix aims to provide nostalagic feel of old console or TTYs like OS, eg. MS-DOS, and not go into modern world of GUI. The "ix" in the last is added to follow the Unix naming style.

The Owl has been choosen the mascot for Discitix by me as it represents knowledge and wisdom. And this kernel is being developed to gain knowledge. This is a testing and learning kernel and not a daily driver and in future too, it won't be!

Discitix in action

Milestones

• Booting
• VGA Driver
• GDT
• IDT
• ISRs
• IRQs
• PIT
• Keyboard
• High resolution Framebuffer driver
• Switch to Limine and say sayounara to GRUB
• Paging
• VFS
• Reading/Writing from/to disk
• EXT2 FS
• ELF execution
• IPC
• Shell

discitix_kernel's Issues

Re-write the whole thing for x86_64

Re write the kernel for 64-bit architecture. x86_64 is the way UwU.

mm/frame.c/init_bitmap() raises warning

mm/frame.c/init_bitmap() raises a cast to pointer from int of different type. Solve this warning.

Issue with frame allocator code

In function src/mm/frame.c/read_multiboot_mem_map_entry(), init_bitmap isn't working properly and causing triple-faults on qemu! Also a workaround has been made but that causes corruption to VGA and crashes QEMU with some tss_cpu errors. Fix it ASAP!!

Issue with utility/log.c/log()

The log() function raises ISR 7 when mem_size is divided by any number in frame.c/read_multiboot_mem_map_entry(). Fix it ASAP.

Commit dates are off

The commit dates are completely off BTW... :D

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I'm not sure what to make of them. If I may ask, when was the initial commit actually made? :D

Double characters printed when keyboard_read() is run in loop

Double characters are printed when keyboard_read() is run in a loop. When run once does correct work.
Fix it asap!!

Physical page manager is trash

Physical frame allocator is garbage. Use limine instead of GRUB and re write frame allocator.