Amiga.org
Amiga computer related discussion => Amiga Software Issues and Discussion => Topic started by: Erebos on April 24, 2008, 10:39:58 PM
-
Hello everyone,
Sorry for this question, but can someone explain to me how OS4 is disabling the 68k processor at loading ? Why devs did such a thing ? And last but not least, is it possible to re activate the processor ?
-
The 68k is halted and never sent any interrupts to wake it back up.
This is done because if the 68k was used, they would both be sharing memory and you'd have to flush the caches whenever either processor wrote to memory that the other processor might use, which causes a massive, massive performance drop.
It is simply much, much faster to run both 68k and PPC software entirely on the PPC.
-
Exactly otherwise you end up with the old context switching which was what killed powerup and warpos