1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495 |
- /*
- * =====================================================================================
- *
- * ________ .__ __ ________ ____ ________
- * \_____ \ __ __|__| ____ | | __\______ \ _______ _/_ |/ _____/
- * / / \ \| | \ |/ ___\| |/ / | | \_/ __ \ \/ /| / __ \
- * / \_/. \ | / \ \___| < | ` \ ___/\ / | \ |__\ \
- * \_____\ \_/____/|__|\___ >__|_ \/_______ /\___ >\_/ |___|\_____ /
- * \__> \/ \/ \/ \/ \/
- *
- * www.optixx.org
- *
- *
- * Version: 1.0
- * Created: 07/21/2009 03:32:16 PM
- * Author: david@optixx.org
- *
- * =====================================================================================
- */
- #include <stdlib.h>
- #include <stdint.h>
- #include <avr/io.h>
- #include <util/delay.h> /* for _delay_ms() */
- #include <avr/interrupt.h>
- #include "config.h"
- #include "sram.h"
- #include "system.h"
- #include "uart.h"
- #include "debug.h"
- #include "info.h"
- #include "requests.h"
- void system_init(void)
- {
- snes_reset_hi();
- snes_reset_off();
- snes_irq_hi();
- snes_irq_off();
- }
- void system_reset()
- {
- info_P(PSTR("Reset SNES\n"));
- cli();
- snes_reset_on();
- snes_reset_lo();
- _delay_ms(2);
- snes_reset_hi();
- snes_reset_off();
- sei();
- }
- void system_send_irq()
- {
- snes_irq_on();
- snes_irq_lo();
- _delay_us(20);
- snes_irq_hi();
- snes_irq_off();
- }
- void system_bus_avr()
- {
- info_P(PSTR("Activate AVR bus\n"));
- avr_bus_active();
- info_P(PSTR("Disable SNES WR\n"));
- snes_wr_disable();
- }
- void system_bus_snes()
- {
- snes_wr_disable();
- info_P(PSTR("Disable SNES WR\n"));
- snes_bus_active();
- info_P(PSTR("Activate SNES bus\n"));
- irq_stop();
- }
- void system_rom_mode(usb_transaction_t *usb_trans)
- {
- if (usb_trans->req_bank_size == 0x8000) {
- snes_lorom();
- info_P(PSTR("Set SNES lowrom \n"));
- } else {
- snes_hirom();
- info_P(PSTR("Set SNES hirom \n"));
- }
- }
|