2008-08-07 14:26:07 +02:00
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/****************************************************************************
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2008-12-11 18:38:29 +01:00
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* ngc.c
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2008-08-07 14:26:07 +02:00
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*
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2008-12-11 18:38:29 +01:00
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* Genesis Plus GX main
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*
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* code by Softdev (2006), Eke-Eke (2007,2008)
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2008-08-07 14:26:07 +02:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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2008-12-11 18:38:29 +01:00
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*
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2008-08-07 14:26:07 +02:00
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***************************************************************************/
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2008-12-11 18:38:29 +01:00
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2008-08-07 14:26:07 +02:00
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#include "shared.h"
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#include "font.h"
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#include "history.h"
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2008-12-12 16:38:04 +01:00
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#include "gcaram.h"
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2008-11-13 08:24:30 +01:00
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#ifdef HW_DOL
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2008-08-19 19:15:08 +02:00
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#include "dvd.h"
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#else
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2008-12-08 12:24:04 +01:00
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#include <di/di.h>
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2008-08-07 14:26:07 +02:00
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#endif
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2008-12-10 19:16:30 +01:00
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#include <fat.h>
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2008-12-07 20:31:50 +01:00
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2008-11-13 08:24:30 +01:00
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#ifdef HW_RVL
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/* Power Button callback */
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2009-01-14 17:32:35 +01:00
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u8 Shutdown = 0;
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2008-11-13 08:24:30 +01:00
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void Power_Off(void)
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{
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Shutdown = 1;
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ConfigRequested = 1;
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}
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#endif
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2008-12-07 20:31:50 +01:00
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2008-08-07 14:26:07 +02:00
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/***************************************************************************
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2008-12-12 16:38:04 +01:00
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* Genesis Plus Virtual Machine
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2008-08-07 14:26:07 +02:00
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*
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***************************************************************************/
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static void load_bios()
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{
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2008-12-10 19:16:30 +01:00
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char pathname[MAXPATHLEN];
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2008-08-07 14:26:07 +02:00
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/* reset BIOS found flag */
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config.bios_enabled &= ~2;
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2008-12-12 16:38:04 +01:00
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/* open BIOS file */
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2008-12-11 18:38:29 +01:00
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sprintf (pathname, "%s/BIOS.bin",DEFAULT_PATH);
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2008-12-10 19:16:30 +01:00
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FILE *fp = fopen(pathname, "rb");
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2008-08-07 14:26:07 +02:00
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if (fp == NULL) return;
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/* read file */
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fread(bios_rom, 1, 0x800, fp);
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fclose(fp);
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/* update BIOS flags */
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config.bios_enabled |= 2;
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2008-08-19 19:15:08 +02:00
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if (config.bios_enabled == 3)
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{
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/* initialize system */
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system_init ();
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audio_init(48000);
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}
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2008-08-07 14:26:07 +02:00
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}
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2008-12-07 20:31:50 +01:00
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static void init_machine (void)
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2008-08-07 14:26:07 +02:00
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{
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2008-12-19 16:38:26 +01:00
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/* Allocate cart_rom here ( 10 MBytes ) */
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2008-11-13 08:24:30 +01:00
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cart_rom = memalign(32, 10 * 1024 * 1024);
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2008-08-07 14:26:07 +02:00
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2008-12-12 16:38:04 +01:00
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/* BIOS support */
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load_bios();
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2008-08-07 14:26:07 +02:00
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/* allocate global work bitmap */
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memset (&bitmap, 0, sizeof (bitmap));
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2008-12-12 16:38:04 +01:00
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bitmap.width = 720;
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2008-08-07 14:26:07 +02:00
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bitmap.height = 576;
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bitmap.depth = 16;
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bitmap.granularity = 2;
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bitmap.pitch = bitmap.width * bitmap.granularity;
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bitmap.viewport.w = 256;
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bitmap.viewport.h = 224;
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bitmap.viewport.x = 0;
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bitmap.viewport.y = 0;
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2008-12-04 20:32:22 +01:00
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bitmap.data = texturemem;
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2008-08-07 14:26:07 +02:00
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/* default system */
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input.system[0] = SYSTEM_GAMEPAD;
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input.system[1] = SYSTEM_GAMEPAD;
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}
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/**************************************************
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Load a new rom and performs some initialization
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***************************************************/
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void reloadrom ()
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{
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2008-12-17 18:18:07 +01:00
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load_rom(""); /* Load ROM */
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system_init (); /* Initialize System */
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audio_init(48000); /* Audio System initialization */
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ClearGGCodes (); /* Clear Game Genie patches */
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system_reset (); /* System Power ON */
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2008-08-07 14:26:07 +02:00
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}
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/***************************************************************************
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* M A I N
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*
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***************************************************************************/
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2009-01-14 17:32:35 +01:00
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u8 fat_enabled = 0;
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u32 frameticker = 0;
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2008-08-07 14:26:07 +02:00
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int main (int argc, char *argv[])
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{
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2008-08-19 19:15:08 +02:00
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#ifdef HW_RVL
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2008-12-10 19:16:30 +01:00
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/* initialize Wii DVD interface first */
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2008-12-07 20:31:50 +01:00
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DI_Close();
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2008-08-19 19:15:08 +02:00
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DI_Init();
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#endif
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2009-01-14 17:32:35 +01:00
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uint32 RenderedFrames = 0;
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uint32 TotalFrames = 0;
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uint32 FramesPerSecond = 0;
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2009-01-13 21:02:06 +01:00
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2009-01-06 18:15:28 +01:00
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/* initialize OGC subsystems */
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2008-08-07 14:26:07 +02:00
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ogc_video__init();
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ogc_input__init();
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ogc_audio__init();
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2008-11-13 08:24:30 +01:00
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#ifdef HW_DOL
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2009-01-06 18:15:28 +01:00
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/* initialize GC DVD interface */
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2008-08-07 14:26:07 +02:00
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DVD_Init ();
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dvd_drive_detect();
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#endif
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2008-11-13 08:24:30 +01:00
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#ifdef HW_RVL
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2009-01-06 18:15:28 +01:00
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/* Power button callback */
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2008-11-13 08:24:30 +01:00
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SYS_SetPowerCallback(Power_Off);
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#endif
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2009-01-06 18:15:28 +01:00
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/* initialize FAT Interface */
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2009-01-14 17:32:35 +01:00
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if (fatInitDefault())
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2008-10-26 19:32:32 +01:00
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{
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2008-12-10 19:16:30 +01:00
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fat_enabled = 1;
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2008-12-10 22:29:42 +01:00
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#ifdef HW_RVL
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fatEnableReadAhead ("sd", 6, 64);
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fatEnableReadAhead ("usb", 6, 64);
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#else
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fatEnableReadAhead ("carda", 6, 64);
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fatEnableReadAhead ("cardb", 6, 64);
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#endif
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2008-10-26 19:32:32 +01:00
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}
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2008-10-17 20:35:28 +02:00
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2009-01-14 17:32:35 +01:00
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/* default config */
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2008-12-12 14:27:38 +01:00
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legal();
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2008-08-07 14:26:07 +02:00
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set_config_defaults();
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config_load();
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2009-01-14 17:32:35 +01:00
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/* restore recent files list */
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2008-08-07 14:26:07 +02:00
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set_history_defaults();
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history_load();
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2009-01-14 17:32:35 +01:00
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/* initialize Virtual Machine */
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2008-08-07 14:26:07 +02:00
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init_machine ();
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2009-01-09 18:11:42 +01:00
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2009-01-06 18:15:28 +01:00
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/* load any injected rom */
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2008-08-07 14:26:07 +02:00
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if (genromsize)
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{
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ARAMFetch((char *)cart_rom, (void *)0x8000, genromsize);
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reloadrom ();
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}
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2009-01-09 18:11:42 +01:00
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2009-01-14 17:32:35 +01:00
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/* show menu first */
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2009-01-13 18:00:37 +01:00
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ConfigRequested = 1;
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2009-01-09 18:11:42 +01:00
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2009-01-14 17:32:35 +01:00
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/* main emulation loop */
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2008-08-07 14:26:07 +02:00
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while (1)
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{
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2009-01-14 17:32:35 +01:00
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/* check for menu request */
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2009-01-08 20:01:16 +01:00
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if (ConfigRequested)
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{
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2009-01-14 17:32:35 +01:00
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/* stop audio & video */
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2009-01-08 20:01:16 +01:00
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ogc_audio__stop();
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2009-01-09 18:11:42 +01:00
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ogc_video__stop();
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2009-01-08 20:01:16 +01:00
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/* go to menu */
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2009-01-13 21:02:06 +01:00
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MainMenu (FramesPerSecond);
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2009-01-08 20:01:16 +01:00
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ConfigRequested = 0;
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2009-01-14 17:32:35 +01:00
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/* reset framecounts */
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2009-01-13 21:02:06 +01:00
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RenderedFrames = 0;
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TotalFrames = 0;
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FramesPerSecond = vdp_rate;
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2009-01-08 20:01:16 +01:00
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2009-01-14 17:32:35 +01:00
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/* start audio & video */
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2009-01-09 18:11:42 +01:00
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ogc_video__start();
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2009-02-22 20:57:41 +01:00
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ogc_audio__start();
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/* reset framesync */
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frameticker = 1;
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2009-01-08 20:01:16 +01:00
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}
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2009-01-13 18:00:37 +01:00
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if (frameticker > 1)
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{
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2009-01-14 17:32:35 +01:00
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/* skip frame */
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2009-02-22 20:57:41 +01:00
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frameticker-=2;
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2009-01-13 18:00:37 +01:00
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system_frame (1);
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/* update audio only */
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ogc_audio__update();
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}
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else
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{
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2009-01-14 17:32:35 +01:00
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/* framesync */
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while (frameticker < 1) usleep(1);
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2009-02-22 20:57:41 +01:00
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frameticker--;
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2009-01-13 18:00:37 +01:00
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2009-01-14 17:32:35 +01:00
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/* render frame */
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2009-01-13 18:00:37 +01:00
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system_frame (0);
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/* update video & audio */
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ogc_video__update();
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2009-02-22 20:57:41 +01:00
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ogc_audio__update();
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2009-01-13 21:02:06 +01:00
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RenderedFrames++;
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2009-01-13 18:00:37 +01:00
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}
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2009-01-14 17:32:35 +01:00
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/* update framecounts */
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2009-01-13 21:02:06 +01:00
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TotalFrames++;
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if (TotalFrames == vdp_rate)
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{
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FramesPerSecond = RenderedFrames;
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RenderedFrames = 0;
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TotalFrames = 0;
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}
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2008-08-07 14:26:07 +02:00
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}
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2009-01-06 18:15:28 +01:00
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2008-08-07 14:26:07 +02:00
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return 0;
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}
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