HOS - Holtrop's Operating System HOS is a 32-bit, protected mode, graphical, multitasking operating system. It was written by me, Josh Holtrop, with help from a few others along the way. History ------------- 0.14 03/01/04 - Thanks to Ben Meyer for helping me get a Makefile working and building on linux to work! 0.13 01/26/04 - functions added to read/write CMOS clock date and time 01/19/04 - fixed bug GDTR/IDTR pointing to physical rather than linear table base address 01/07/04 - fixed bug not reading sectors correctly from floppy 12/28/03 - fixed bug not storing eax on interrupt 12/25/03 - fixed bug in mm_palloc() 12/25/03 - incorporated output functions as regular functions rather than as part of a linked library 12/23/03 - re-written physical memory manager using bitmap instead of stack 12/22/03 - kernel relocated to 3gb linear / 1mb+24kb physical to allow for app. address space 0.12 12/21/03 - sample bmp loader tested, works (tests loading a kernel of size ~ 932kb 12/20/03 - GDT/IDT now located at 1mb physical, before kernel 10/30/03 - turns floppy motor off 10/30/03 - keyboard LEDs working 10/29/03 - paging functions working 10/15/03 - physical memory management page allocators working 0.11 10/09/03 - PS/2 mouse driver 0.10 09/11/03 - Rewritten C and assembly kernel with VESA GUI mode support, keyboard driver 0.05 05/14/03 - HGUI24/HGUI32 commands finished for testing GUI on both 24bpp and 32bpp graphics cards 05/14/03 - first web release! 0.04 03/09/03 - added VM shortcut command 03/09/03 - press up to fill retrieve last inputted command for Nate Scholten 03/08/03 - press clear to clear console input 03/07/03 - added "shortcut" commands PC, IC, ? for Nate Scholten 03/06/03 - added PROMPTC, INPUTC commands 0.03 12/30/02 - Command Line Interface working, accepting basic commands