gc_n64_usb-v3/bootloader.c

33 lines
1003 B
C

/* gc_n64_usb : Gamecube or N64 controller to USB adapter firmware
Copyright (C) 2007-2015 Raphael Assenat <raph@raphnet.net>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include "usb.h"
void enterBootLoader(void)
{
usb_shutdown();
// AT90USB1287/1286 : 0xF000 (word address)
// ATmega32u2 : ???
asm volatile(
"cli \n"
"ldi r30, 0x00 \n" // ZL
"ldi r31, 0xF0 \n" // ZH
"ijmp");
}