prepare commands

avr/usbload/system.c

@@ -23,6 +23,8 @@
 #include <stdint.h>
 #include <avr/io.h>
 #include <util/delay.h>         /* for _delay_ms() */
+#include <avr/interrupt.h>      
+
 
 #include "config.h"
 #include "sram.h"
@@ -30,10 +32,64 @@
 #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"));
+    }
+}
+