[BITS 16]
[ORG 0]
	jmp start
	bootdrv		db 0
	sysstart	db ''Press any key to start system.'',13,10,0
	rebootmsg	db ''Press any key to reboot.'',13,10,0
	resetmsg	db ''Resetting drive...'',13,10,0
	readmsg		db ''Loading program...'',13,10,0
start:
	mov ax,0x7c0
	mov ds,ax
	mov [bootdrv],dl
	cli
	mov ax,0x9000
	mov ss,ax
	mov sp,0xffff
	sti
	mov si,sysstart
	call msg
	call keywait
	call reset
	call read
	push keywait
	push msg
	mov ax,1000h
	mov ds,ax
	call 1000h:0000
	mov ax,0x7c0
	mov ds,ax
	call reboot
reset:
	mov si,resetmsg
	call msg
	mov ax,0
	mov dl,[bootdrv]
	int 13h
	jc reset
	ret
reboot:
	mov si,rebootmsg
	call msg
	call keywait
	db 0EAh
	dw 0000h
	dw 0FFFFh
msg:
	lodsb
	or al,al
	jz msgdone
	mov ah,0eh
	mov bx,0007
	int 0x10
	jmp msg
msgdone:
	ret
keywait:
	mov ah,0
	int 016h
	ret
read:
	mov si,readmsg
	call msg
	mov ax,1000h
	mov es,ax
	mov bx,0
	mov ah,2
	mov al,5
	mov ch,0
	mov cl,2
	mov dh,0
	mov dl,[bootdrv]
	int 13h
	jc read
	ret
times 510-($-$$) db 0
	dw 0AA55h