123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137 |
- /*
- * =====================================================================================
- *
- * ________ .__ __ ________ ____ ________
- * \_____ \ __ __|__| ____ | | __\______ \ _______ _/_ |/ _____/
- * / / \ \| | \ |/ ___\| |/ / | | \_/ __ \ \/ /| / __ \
- * / \_/. \ | / \ \___| < | ` \ ___/\ / | \ |__\ \
- * \_____\ \_/____/|__|\___ >__|_ \/_______ /\___ >\_/ |___|\_____ /
- * \__> \/ \/ \/ \/ \/
- *
- * www.optixx.org
- *
- *
- * Version: 1.0
- * Created: 07/21/2009 03:32:16 PM
- * Author: david@optixx.org
- *
- * =====================================================================================
- */
- #include <avr/io.h>
- #include <avr/interrupt.h>
- #include <util/delay.h>
- #include <stdlib.h>
- #include "config.h"
- #include "requests.h"
- #include "sram.h"
- #include "info.h"
- #include "irq.h"
- #include "usbdrv.h"
- #include "rle.h"
- #include "loader.h"
- extern uint32_t req_bank_size;
- extern const char _rom[] PROGMEM;
- void usb_connect()
- {
- uint8_t i = 0;
- info_P(PSTR("USB init\n"));
- usbDeviceDisconnect(); /* enforce re-enumeration, do this while */
- cli();
- info_P(PSTR("USB disconnect\n"));
- i = 10;
- while (--i) { /* fake USB disconnect for > 250 ms */
- _delay_ms(50);
- }
- led_on();
- usbDeviceConnect();
- info_P(PSTR("USB connect\n"));
- }
- void send_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 send_irq()
- {
- snes_irq_on();
- snes_irq_lo();
- _delay_us(20);
- snes_irq_hi();
- snes_irq_off();
- }
- void set_rom_mode()
- {
- if (req_bank_size == 0x8000) {
- snes_lorom();
- info_P(PSTR("Set SNES lowrom \n"));
- } else {
- snes_hirom();
- info_P(PSTR("Set SNES hirom \n"));
- }
- }
- void boot_startup_rom(uint16_t init_delay)
- {
- info_P(PSTR("Fetch loader rom\n"));
- info_P(PSTR("Activate AVR bus\n"));
- avr_bus_active();
- info_P(PSTR("IRQ off\n"));
- snes_irq_lo();
- snes_irq_off();
- snes_lorom();
- rle_decode(&_rom, ROM_BUFFER_SIZE, 0x000000);
- info_P(PSTR("\n"));
- #if DO_CRC_CHECK_LOADER
- dump_memory(0x010000 - 0x100, 0x010000);
- uint16_t crc;
- crc = crc_check_bulk_memory((uint32_t)0x000000,0x010000, 0x010000);
- info(PSTR("crc=%x\n"),crc);
- #endif
- snes_irq_lo();
- snes_irq_off();
- snes_hirom();
- snes_wr_disable();
-
- snes_bus_active();
- info_P(PSTR("Activate SNES bus\n"));
- send_reset();
- _delay_ms(init_delay);
- }
- void banner(){
- uint8_t i;
- for (i=0;i<40;i++)
- info_P(PSTR("\n"));
- info_P(PSTR(" ________ .__ __ ________ ____ ________\n"));
- info_P(PSTR(" \\_____ \\ __ __|__| ____ | | __\\______ \\ _______ _/_ |/ _____/\n"));
- info_P(PSTR(" / / \\ \\| | \\ |/ ___\\| |/ / | | \\_/ __ \\ \\/ /| / __ \\ \n"));
- info_P(PSTR(" / \\_/. \\ | / \\ \\___| < | ` \\ ___/\\ / | \\ |__\\ \\ \n"));
- info_P(PSTR(" \\_____\\ \\_/____/|__|\\___ >__|_ \\/_______ /\\___ >\\_/ |___|\\_____ / \n"));
- info_P(PSTR(" \\__> \\/ \\/ \\/ \\/ \\/ \n"));
- info_P(PSTR("\n"));
- info_P(PSTR(" www.optixx.org\n"));
- info_P(PSTR("\n"));
- info_P(PSTR("System Hw: %s Sw: %s\n"),HW_VERSION,SW_VERSION);
-
- }
|