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microkernel
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A personal x86 kernel
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microkernel
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# Experimental x86 Microkernel Licensed under the terms of the MIT License. See the `LICENSE` file for details. This project is an experimental microkernel built to explore operating system design and low-level x86 architecture. It is designed to run in Protected Mode and is compatible with GRUB and other Multiboot-compliant bootloaders. While primarily an educational exercise in systems programming, the project implements foundational kernel concepts including memory management, basic multitasking, and a Virtual File System (VFS) layer. ## Dependencies The project was built and tested with the following toolchain: * GNU GCC 4.7.2 * NASM 2.10.01 * GNU ld 2.22.90 * GNU Make 3.81 **Optional Emulators:** * QEMU 1.2.0 * Bochs 2.4.6 ## Build Instructions Compile the kernel source: ```bash make kernel ``` Generate bootable images (requires `genisoimage` for CD-ROM): ```bash make cdrom make floppy ``` Run the compiled image in an emulator (requires `qemu` or `bochs`): ```bash make run-cdrom make run-floppy ``` Build configuration and options can be adjusted in `common.mk`. ## Roadmap / Future Architecture Goals ### Core System * Refactor memory management unit (MMU) and descriptor tables * Process synchronization primitives (mutexes, semaphores) * Priority-based scheduling and tickless kernel design * ELF executable loading and relocation * Separation of architecture-specific code from common C abstractions ### VFS and Storage * Unified API for underlying filesystems * Mount registry and vnode caching * Block cache system and DMA support * ATAPI (CD-ROM) and ATA interface drivers ### Hardware and Drivers * Driver manager and module registration * IRQ and DMA allocation tracking * Independent I/O request layer * PCI configuration and bus enumeration * Basic TCP/IP stack (Ethernet, ARP, IP, ICMP, UDP, TCP) ### Userland * Port Newlib (libc) and basic POSIX syscalls * Port Bash shell and Binutils * VESA driver and graphical interface prototyping ## Resources Development heavily referenced the architectural references and documentation available at [OSdev.org](http://wiki.osdev.org/).
