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zboy.c
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zboy.c
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/*
* zBoy - A GameBoy emulator for Windows and Linux
* Copyright (C) Mateusz Viste 2010, 2011, 2012, 2013, 2014, 2015
* ----------------------------------------------------------------------
* 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 some standard C headers */
#include <stdio.h> /* for printf() and fprintf() */
#include <stdlib.h> /* for atoi() and exit(), random() and randomize() */
#include <string.h>
#include <time.h> /* for time-related functions (clock, time...) */
#include <stdint.h> /* for uint8_t type */
#include <signal.h>
#include "drv.h"
#define pVer "0.60"
#define pDate "2010,2011,2012,2013,2014,2015"
/* The options below make zBoy to be compiled in debug mode, and optionally trace CPU activity to a trace file */
/* #define DEBUGMODE */
/* #define DEBUGTRACEFILE */
/* #define MEMDUMP_AT_EXIT */
/* Produce a stand-alone exe file with an embedded ROM file */
/* #define EMBEDROM "embedrom/dracula.c" */
/* #define EMBEDROM "embedrom/pacman.c" */
/* #define EMBEDROM "embedrom/drmario.c" */
#ifndef DEBUGMODE /* If not in debugmode, then disable PrintDebug */
/* #define PrintDebug printf */
/* #define PrintDebug(...) */
void PrintDebug(char *s, ...) {
s = s; /* just to make gcc warnings shut up */
}
#else
#define PrintDebug printf
#endif
#include "zboystructs.h"
struct RomInformations RomInfos;
// char CartTypes[256][256];
signed int AskForScreenshot = 0;
unsigned int LastScreenshotTime = 0;
uint8_t NetPlay = 0;
char *NetPlayPeer;
char *NetPlayBindaddr = NULL;
int QuitEmulator = 0;
unsigned int GraphicWidth, GraphicHeight;
// char UserMessage[1024];
unsigned int UserMessageFramesLeft = 0;
/* the zboyversion() function is used by many modules to display the app version */
char *zboyversion(void) {
return(pVer);
}
/* the zboyversion() function is used by many modules to display the app date */
char *zboydate(void) {
return(pDate);
}
#include "about.h"
#include "declares.h" /* Some SUB/FUNCTION declarations */
#include "binary.h" /* Provides basic support to binary notation (eg. bx01100111) */
#include "adjtiming.c" /* AdjustTiming() */
#include "config.h" /* zBoy_loadconfig() & zBoy_saveconfig() */
#include "numconv.c" /* UbyteToByte() and DwordVal() */
#include "presskey.c" /* PressAnyKey() */
#include "getsnapshotfilename.c"
#include "mmu.c" /* Include Memory Management Unit emulation core */
#include "hiscores.c" /* Provides SaveHiScoresMem() and LoadHiScoresMem() */
#include "cpu-ints.c" /* Interrupts routines */
#include "video.c" /* Video emulation core */
#include "loadpal.h" /* LoadPalette() */
#include "colorize.c" /* colorize() */
#include "joypad.c" /* Joypad interface emulation */
#include "cpu-timer.c" /* Include timer emulation */
#include "cpu-divider.c" /* Include divider emulation */
#ifdef DEBUGMODE
#include "debug.c" /* Includes some debugging routines */
#endif
#include "cpu-z80.c" /* Z80 CPU emulation core */
#include "battery.c" /* Provides LoadBattRAM() and SaveBattRAM() */
#include "font.c" /* Includes font data used by zBoy to display onscreen messages */
#include "wordwrap.h" /* WordWrap(), required by PrintMsg() */
#include "printmsg.c" /* PrintMsg(text AS STRING) */
#include "loadrom.h" /* LoadROM(RomFile AS STRING) */
#include "serial.c" /* Serial interface emulation */
#include "savepcx.c" /* Screenshot routine SavePcxFile() */
#include "save.c" /* SaveGame() and LoadGame() */
#include "reset.c" /* ResetEmulator() */
#include "about.c" /* printhelp() */
/* checks whether a joystick is needed in current input configuration
* returns 0 if not, non-zero otherwise */
static int isjoystickneeded(struct zboyparamstype *p) {
int res;
res = p->key_bckg | p->key_sprt | p->key_wind | p->key_save | p->key_load |
p->key_asht | p->key_shot | p->key_rset | p->key_quit | p->key_up |
p->key_down | p->key_left | p->key_right | p->key_start |
p->key_select | p->key_a | p->key_b | p->key_turboa | p->key_turbob;
res &= DRV_INPUT_JOYSTICK;
return(res);
}
int zboymain(int argc, char **argv) {
struct zboyparamstype zboyparams;
int UsedCycles;
RomInfos.MemoryROM_PTR = MemoryROM;
/* preload a default zBoy configuration */
zboy_loaddefaultconfig(&zboyparams);
/* (try to) load parameters from the zBoy configuration file */
zboy_loadconfig(&zboyparams);
zboyparams.GraphicScaleFactor = 1; /* use 1x scaling */
zboyparams.scalingalgo = REFRESHSCREEN_NOSCALE; /* No scaling at all */
/* check the configuration, and fix it if needed */
zboy_fixconfig(&zboyparams);
GraphicWidth = 160 * zboyparams.GraphicScaleFactor;
GraphicHeight = 144 * zboyparams.GraphicScaleFactor;
/* init the I/O subsystem and set a window title */
if (drv_init(GraphicWidth, GraphicHeight, isjoystickneeded(&zboyparams) != 0 ? zboyparams.joyid : -1) != 0) {
return(0);
}
// InitScreenOldBuffer(); /* Init the screen buff used for LCD change detection (will force the complete draw of the 1st frame) */
/* load the palette into the I/O subsystem now, in case we need to display an error message */
// drv_loadpal(ScreenPalette32);
/*
if (NetPlay != 0) {
if (net_open(NetPlayBindaddr, NetPlayPeer) != 0) {
printf("Error: Failed to init networking!\n");
}
}
* /
switch (RomInfos.MbcModel) { /* Check the MBC chip type, and select the right Read/Write functions * /
case 0: /* ROM ONLY * /
MemoryWriteSpecial = &MBC0_MemoryWrite;
MemoryReadSpecial = &MBC0_MemoryRead;
break;
/*
case 1: /* MBC1 * /
MemoryWriteSpecial = &MBC1_MemoryWrite;
MemoryReadSpecial = &MBC1_MemoryRead;
break;
case 2: /* MBC2 * /
MemoryWriteSpecial = &MBC2_MemoryWrite;
MemoryReadSpecial = &MBC2_MemoryRead;
break;
case 3: /* MBC3 * /
MemoryWriteSpecial = &MBC3_MemoryWrite;
MemoryReadSpecial = &MBC3_MemoryRead;
break;
case 5: /* MBC5 * /
MemoryWriteSpecial = &MBC5_MemoryWrite;
MemoryReadSpecial = &MBC5_MemoryRead;
break;
* /
default: /* Any other (not supported) memory controller * /
PrintMsg("ERROR: THE MEMORY CONTROLLER USED BY THIS ROM IS NOT SUPPORTED (YET) BY ZBOY. SORRY.", 0);
RefreshScreen(0, 159, 0, 143, &zboyparams);
PressAnyKey();
return(0);
break;
}
/*InitRAM() */ /* Init RAM areas to random values (as in a real GameBoy) */
if ((RomInfos.Battery != 0) && (RomInfos.RamSize > 0)) LoadBattRAM(); /* check for battery-saved RAM */
ResetEmulator(); /* Fire up the Zilog80 monster, and init all required variables */
// if (zboyparams.HiScoresMem != 0) LoadHiScoresMem(); /* Check out if need to look after hiscores */
/* starting emulation... */
while (QuitEmulator == 0) {
UsedCycles = CpuExec();
TotalCycles += UsedCycles; /* Increment the global cycles counter */
uTimer( UsedCycles ); /* Update uTimer */
incDivider( UsedCycles ); /* Increment the DIV register */
if( HaltState ){
VideoSysUpdate(UsedCycles, &zboyparams); /* Update Video subsystem */
CheckJoypad(UsedCycles , &zboyparams); /* Update the Joypad register */
CheckInterrupts( &Register );
UsedCycles = 0;
}
int partial = CpuExec();
UsedCycles += partial;
TotalCycles += partial; /* Increment the global cycles counter */
uTimer( partial ); /* Update uTimer */
incDivider( partial ); /* Increment the DIV register */
VideoSysUpdate(UsedCycles, &zboyparams); /* Update Video subsystem */
CheckJoypad(UsedCycles , &zboyparams); /* Update the Joypad register */
if ( InterruptsState || HaltState )
CheckInterrupts( &Register );
}
if ((RomInfos.Battery != 0) && (RomInfos.RamSize > 0)) SaveBattRAM(); /* save the battery-saved RAM, if any */
if (zboyparams.HiScoresMem != 0) SaveHiScoresMem();
zboy_saveconfig(&zboyparams);
if (NetPlay != 0) net_close();
/* shutdown the I/O subsystem */
drv_close();
return(0);
}