/*
	Copyright 2009 Charles Lohr under the MIT/X11 License.
*/

	.code16
	.global loader

//Code runs from 0x7c00
.align 4
.org 0x00
	//First, preserve drive letter.
	push %dx

	//Print out the letter 1, so we know it's working.
	mov $0x0e31, %ax
	mov $0x00, %bx
	int $0x10

	//Copy over first few sectors of hard disk into ram.
	mov %al, %dl
	mov $0x0202, %ax //Read first sector.
	mov $0x0002, %cx //Track = 0, sector = 1
	pop %dx
	mov $0x00, %dh //Head = 0, Drive = (whatever drive we started with)
	mov $0x0000, %bx
	mov %bx, %es //Segment of output
	mov $0x8200, %bx //Pointer of output
	int $0x13

//	mov 0x130, %al
	//Print if was successful, if 0: success!
	mov %ah, %al
	mov $0x0e, %ah
	add $0x30, %al
	mov $0x00, %bx
	int $0x10

	jmpl  $0, $0x8200
//$main

//Disk Signature
.org 0x180
	.long 0xefcdab89
	.short 0x0000
	//Disk entry 1.
	.byte 0x80 //Active partition 1 (and bootable)
	.byte 0x00
	.byte 0x02 //CHS address
	.byte 0x00
	.byte 0x56 //Partition type
	.byte 0x03 
	.byte 0x0b //CHS adderss of last sector
	.byte 0x00
	.long 0x01
	.long 0xc7 //Number of sectors in partition.

//MBR Signature
.org 0x1fe
	.byte 0x55
	.byte 0xaa
	.section ".endprog", "ax"
	.extern end_of_kernel


end_of_kernel:
	leave
	ret