RGOS -- A hopefully straightforward OS design.
==============================================

Author: C. Forbes [chrisf@ijw.co.nz]


How to make it work:

	Assuming Ubuntu Lucid x86 on your host, you will need:
		* Oracle Virtualbox 3.2.0+
		* Packages: build_essential, nasm, genisoimage, grub, 
			git-core
		
	Checkout the sources:
		
		$ git clone git://github.com/chrisforbes/rgos
	
	Build it:
	
		$ cd rgos
		$ make
	
	Mount `rgos.iso` (in a VM, probably). Give it >= 64M of RAM, 
	and watch it work.

Stuff that needs done:

	Most interesting things don't work, or more likely, don't exist 
	at all. However, I plan to support, roughly in order:
	
	*	Building the physmem image based on the multiboot memory
		map, rather than assuming 64M. Any unusable areas should be
		blocked out of the physmem image.
		
	*	Writing the kfree function, so we don't exhaust the kernel
		heap.
	
	*	Unmap the bottom pagetable as soon as possible -- that's
		userspace. [0x0..]
	
	*	Only map the *required* region of the 0xc0.. pagetable -- not the full 4M.
		If we want to run on *little boxes* (16M or so), 4M of fixed kernel pages is lame.
	
	*	Processes, each with a chain of memory descriptors, placed
		in kheap. The PF handler will consult the descriptor chain
		to decide what it should do.
	
	*	PCI bus enumeration
	
	*	Basic driver framework
	
	*	Legacy keyboard driver
	
	*	Rewrite VGA console driver onto the driver framework
	
	*	SATA AHCI support
	
	*	ATAPI support for CD/DVD drives
	
	*	ISO9660 filesystem driver
	
	*	ELF parser & relocator -- for loadable kernel modules.
	
	*	ACPI support -- for at least shutdown!
	
	*	ATA disk support
	
	*	ext2 filesystem driver?