To perform a reboot in DOS, all you

[adholioshake]

To perform a reboot in DOS, all you need to do is jmp to location FFFFh:0000h. How do you do this ??
I did have some code for this, but I can't remember how to jump to that segment. Can anyone help?

Thanks, Adonai.

 

[lionelhill]

How about pushing the address and doing a retf?

 

[adholioshake]

Don't worry, I've figured out some code:

code segment
  assume cs:code
  org 100h
program:
  mov ax,0040h
  mov es,ax
  mov es:0072h,1234h ; Warm boot
  db 0eah   ; jmp far
  dw 0000h  ; Offset
  dw 0ffffh ; Segment
code ends
end program

(Putting the opcodes as data means the assembler doesn't complain... ).
I'm sure the 'retf' method would work too.

Adonai