88 lines
3.1 KiB
Plaintext
88 lines
3.1 KiB
Plaintext
HOS - Holtrop's Operating System
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HOS is (in the process of becoming) a 32-bit, protected mode, graphical, multitasking operating system.
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It was written by me, Josh Holtrop, with help from a few others along the way.
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Goals: (A = accomplished, P = in progress, T = todo)
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----------------------------------------------------
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(A) Custom bootloader to load kernel from FAT-formatted boot media, options for video mode/ram disk
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(A) Multiboot compliance - kernel can be loaded by GRUB
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(A) 32-bit protected mode environment
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(A) VESA Support for graphics modes
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(A) PS/2 keyboard & mouse drivers
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(A) Utilize x86's paging architecture for virtual memory management
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(P) VFS abstraction layer for a single file system
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(P) ram disk driver
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(P) devfs file system driver
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(T) ext2 file system support
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(T) vfat file system support
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(T) Multitasking support
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(T) Console Manager
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(T) HASH command shell
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(T) Window Manager
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(T) Various other utilities/applications
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(T) Hard Drive (ATA) driver
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(T) cdrom (ATAPI) driver
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Change Log
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----------
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0.15
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07/10/04 - Multiboot support added, loadable by GRUB
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0.14
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05/21/04 - C++ support in kernel, can use classes & templates
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04/04/04 - video_line function for diagonal lines
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03/16/04 - new VFS design with support for a loop device
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03/01/04 - Thanks to Ben Meyer for helping me get a Makefile working and building on linux to work!
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0.13
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01/26/04 - functions added to read/write CMOS clock date and time
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01/19/04 - fixed bug GDTR/IDTR pointing to physical rather than linear table base address
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01/07/04 - fixed bug not reading sectors correctly from floppy
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12/28/03 - fixed bug not storing eax on interrupt
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12/25/03 - fixed bug in mm_palloc()
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12/25/03 - incorporated output functions as regular functions rather than as part of a linked library
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12/23/03 - re-written physical memory manager using bitmap instead of stack
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12/22/03 - kernel relocated to 3gb linear / 1mb+24kb physical to allow for app. address space
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0.12
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12/21/03 - sample bmp loader tested, works (tests loading a kernel of size ~ 932kb)
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12/20/03 - GDT/IDT now located at 1mb physical, before kernel
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10/30/03 - turns floppy motor off
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10/30/03 - keyboard LEDs working
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10/29/03 - paging functions working
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10/15/03 - physical memory management page allocators working
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0.11
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10/09/03 - PS/2 mouse driver
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0.10
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09/11/03 - Rewritten C and assembly kernel with VESA GUI mode support, keyboard driver
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0.05
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05/14/03 - HGUI24/HGUI32 commands finished for testing GUI on both 24bpp and 32bpp graphics cards
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05/14/03 - first web release!
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0.04
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03/09/03 - added VM shortcut command
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03/09/03 - press up to fill retrieve last inputted command for Nate Scholten
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03/08/03 - press clear to clear console input
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03/07/03 - added "shortcut" commands PC, IC, ? for Nate Scholten
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03/06/03 - added PROMPTC, INPUTC commands
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0.03
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12/30/02 - Command Line Interface working, accepting basic commands
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0.02
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12/11/02 - Assembly bootsector can load stage2 ("console")
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0.01
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12/01/02 - Real mode assembly bootsector boots from floppy disk successfully
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