LAST TEST VERSION !!!

http://www.henkessoft.de/OS_Dev/Downloads/PrettyOS_last_version.zip 2009-04-12

This Operating System represents the basis of a tutorial presented at www.henkessoft.de (private homepage). 

Currently, realized steps:

- Bootable mini-kernel
- Bootloader + asm-kernel (loaded from floppy disk by bootloader)
- Instructions im RM (thanks BIOS interrupts easy handling)
- Activate A20 Gate and PM , GDT/GDTR 
- Jump from asm kernel to C kernel
- Basic text output at screen
- Basic text input by keyboard
- IDT/IDTR, interrupts, exceptions (frame)
- IRQ 0 (system clock tick every 18 msec)
- IRQ 1 (keyboard) 

tutorial can be found here: http://www.henkessoft.de/OS_Dev/OS_Dev1.htm

testwise: paging, heap, virtual file system & ram disk, multitasking, move of stack, switch to another gate (based on code of James Molloy)

path forward: real user mode (ring 3) & sys calls

Proposals and discussions are welcome: 
http://www.c-plusplus.de/forum/viewtopic-var-t-is-236354-and-postdays-is-0-and-postorder-is-asc-and-start-is-0.html

