org 7C00h

jmp 0x0:start

start:

cli
mov ax, 0x0200	;start the stack after the bootloader
mov ss, ax	
mov ax, 0xC00	;make the stack 3k big later this will need to be changed and hardware detection added
mov ax, sp	;but for now this will work.
mov ax, ds
sti

mov ah, 0x0e
mov al, '1'
int 0x10


mov ah, 0x42
mov dl, 0x1
mov si, DiskAddressPacket

 
int 0x13
jc error

jmp	0x0000:0x0200

error:
mov ah, 0x0e
mov al, 'E'	
int 0x10

DiskAddressPacket:
db 0x10		;size of packet
db 0x0		;reserved
dw 0x1		;number of blocks to transfer
dw 0x0		;where in memory to load to
dw 0x0200	;offset
dq 0x1		;starting block to read
dd 0x0

times 510-($-$$) db 0 ;Fill rest of sector up with 0s to make this 512B (a sector)
dw 0xAA55             ;Let BIOS know this is an OS