/* * Copyright (C) 2002-2007 The DOSBox Team * * 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* $Id: dosbox.cpp,v 1.118 2007/07/02 20:06:59 c2woody Exp $ */ #include #include #include #include #include #include "dosbox.h" #include "debug.h" #include "cpu.h" #include "video.h" #include "pic.h" #include "cpu.h" #include "callback.h" #include "inout.h" #include "mixer.h" #include "timer.h" #include "dos_inc.h" #include "setup.h" #include "cross.h" #include "programs.h" #include "support.h" #include "mapper.h" Config * control; MachineType machine; SVGACards svgaCard; /* The whole load of startups for all the subfunctions */ void MSG_Init(Section_prop *); void LOG_StartUp(void); void MEM_Init(Section *); void PAGING_Init(Section *); void IO_Init(Section * ); void CALLBACK_Init(Section*); void PROGRAMS_Init(Section*); //void CREDITS_Init(Section*); void RENDER_Init(Section*); void VGA_Init(Section*); void DOS_Init(Section*); void CPU_Init(Section*); #if C_FPU void FPU_Init(Section*); #endif void DMA_Init(Section*); void MIXER_Init(Section*); void MIDI_Init(Section*); void HARDWARE_Init(Section*); void KEYBOARD_Init(Section*); //TODO This should setup INT 16 too but ok ;) void JOYSTICK_Init(Section*); void MOUSE_Init(Section*); void SBLASTER_Init(Section*); void GUS_Init(Section*); void MPU401_Init(Section*); void PCSPEAKER_Init(Section*); void TANDYSOUND_Init(Section*); void DISNEY_Init(Section*); void SERIAL_Init(Section*); #if C_IPX void IPX_Init(Section*); #endif void SID_Init(Section* sec); void PIC_Init(Section*); void TIMER_Init(Section*); void BIOS_Init(Section*); void DEBUG_Init(Section*); void CMOS_Init(Section*); void MSCDEX_Init(Section*); void DRIVES_Init(Section*); void CDROM_Image_Init(Section*); /* Dos Internal mostly */ void EMS_Init(Section*); void XMS_Init(Section*); void DOS_KeyboardLayout_Init(Section*); void AUTOEXEC_Init(Section*); void SHELL_Init(void); void INT10_Init(Section*); static LoopHandler * loop; bool SDLNetInited; static Bit32u ticksRemain; static Bit32u ticksLast; static Bit32u ticksAdded; static Bit32s ticksDone; static Bit32u ticksScheduled; bool ticksLocked; static Bitu Normal_Loop(void) { Bits ret; while (1) { if (PIC_RunQueue()) { ret=(*cpudecoder)(); if (ret<0) return 1; if (ret>0) { Bitu blah=(*CallBack_Handlers[ret])(); if (blah) return blah; } #if C_DEBUG if (DEBUG_ExitLoop()) return 0; #endif } else { GFX_Events(); if (ticksRemain>0) { TIMER_AddTick(); ticksRemain--; } else goto increaseticks; } } increaseticks: if (GCC_UNLIKELY(ticksLocked)) { ticksRemain=5; /* Reset any auto cycle guessing for this frame */ ticksLast = GetTicks(); ticksAdded = 0; ticksDone = 0; ticksScheduled = 0; } else { Bit32u ticksNew; ticksNew=GetTicks(); ticksScheduled += ticksAdded; if (ticksNew > ticksLast) { ticksRemain = ticksNew-ticksLast; ticksLast = ticksNew; ticksDone += ticksRemain; if ( ticksRemain > 20 ) { ticksRemain = 20; } ticksAdded = ticksRemain; if (CPU_CycleAutoAdjust) { if(ticksScheduled >= 250 || ticksDone >= 250 || (ticksAdded > 15 && ticksScheduled >= 5) ) { /* ratio we are aiming for is around 90% usage*/ Bits ratio = (ticksScheduled * (CPU_CyclePercUsed*90*1024/100/100)) / ticksDone; Bit32s new_cmax = CPU_CycleMax; Bit64s cproc = (Bit64s)CPU_CycleMax * (Bit64s)ticksScheduled; if(cproc > 0) { double ratioremoved = (double) CPU_IODelayRemoved / (double) cproc; if(ratioremoved < 1.0) { ratio = (Bits)((double)ratio * (1 - ratioremoved)); if (ratio <= 1024) new_cmax = (CPU_CycleMax * ratio) / 1024; else new_cmax = 1 + (CPU_CycleMax >> 1) + (CPU_CycleMax * ratio) / 2048; } } // maybe care about not going negative if (new_cmax > 0) CPU_CycleMax = new_cmax; if (CPU_CycleLimit > 0) { if (CPU_CycleMax>CPU_CycleLimit) CPU_CycleMax = CPU_CycleLimit; } CPU_IODelayRemoved = 0; ticksDone = 0; ticksScheduled = 0; } else if (ticksAdded > 15) { CPU_CycleMax /= 3; if (CPU_CycleMax < 100) CPU_CycleMax = 100; } } } else { ticksAdded = 0; SDL_Delay(1); ticksDone -= GetTicks() - ticksNew; if (ticksDone < 0) ticksDone = 0; } } return 0; } void DOSBOX_SetLoop(LoopHandler * handler) { loop=handler; } void DOSBOX_SetNormalLoop() { loop=Normal_Loop; } void DOSBOX_RunMachine(void){ Bitu ret; do { ret=(*loop)(); } while (!ret); } static void DOSBOX_UnlockSpeed( bool pressed ) { if (pressed) ticksLocked = true; else ticksLocked = false; } static void DOSBOX_RealInit(Section * sec) { Section_prop * section=static_cast(sec); /* Initialize some dosbox internals */ ticksRemain=0; ticksLast=GetTicks(); ticksLocked = false; DOSBOX_SetLoop(&Normal_Loop); MSG_Init(section); MSG_Add("CONFIGFILE_INTRO", "# This is the configurationfile for DOSBox %s.\n" "# Lines starting with a # are commentlines.\n" "# They are used to (briefly) document the effect of each option.\n"); MAPPER_AddHandler(DOSBOX_UnlockSpeed, MK_f12, MMOD2,"speedlock","Speedlock"); svgaCard = SVGA_S3Trio; machine=MCH_VGA; std::string cmd_machine; const char * mtype; if (control->cmdline->FindString("-machine",cmd_machine,true)) mtype=cmd_machine.c_str(); else mtype=section->Get_string("machine"); if (strcasecmp(mtype,"cga")==0) machine=MCH_CGA; else if (strcasecmp(mtype,"tandy")==0) machine=MCH_TANDY; else if (strcasecmp(mtype,"pcjr")==0) machine=MCH_PCJR; else if (strcasecmp(mtype,"hercules")==0) machine=MCH_HERC; else if (strcasecmp(mtype,"vga")==0) machine=MCH_VGA; else LOG_MSG("DOSBOX:Unknown machine type %s",mtype); } void DOSBOX_Init(void) { Section_prop * secprop; Section_line * secline; SDLNetInited = false; /* Setup all the different modules making up DOSBox */ secprop=control->AddSection_prop("dosbox",&DOSBOX_RealInit); secprop->Add_string("language",""); secprop->Add_string("machine","vga"); secprop->Add_string("captures","capture"); #if C_DEBUG LOG_StartUp(); #endif secprop->AddInitFunction(&IO_Init);//done secprop->AddInitFunction(&PAGING_Init);//done secprop->AddInitFunction(&MEM_Init);//done secprop->AddInitFunction(&HARDWARE_Init);//done secprop->Add_int("memsize",16); secprop->AddInitFunction(&CALLBACK_Init); secprop->AddInitFunction(&PIC_Init);//done secprop->AddInitFunction(&PROGRAMS_Init); secprop->AddInitFunction(&TIMER_Init);//done secprop->AddInitFunction(&CMOS_Init);//done MSG_Add("DOSBOX_CONFIGFILE_HELP", "language -- Select another language file.\n" "memsize -- Amount of memory dosbox has in megabytes.\n" "machine -- The type of machine tries to emulate:hercules,cga,tandy,pcjr,vga.\n" "captures -- Directory where things like wave,midi,screenshot get captured.\n" ); secprop=control->AddSection_prop("render",&RENDER_Init,true); secprop->Add_int("frameskip",0); secprop->Add_bool("aspect",false); secprop->Add_string("scaler","normal2x"); MSG_Add("RENDER_CONFIGFILE_HELP", "frameskip -- How many frames dosbox skips before drawing one.\n" "aspect -- Do aspect correction, if your output method doesn't support scaling this can slow things down!.\n" "scaler -- Scaler used to enlarge/enhance low resolution modes.\n" " Supported are none,normal2x,normal3x,advmame2x,advmame3x,hq2x,hq3x,\n" " 2xsai,super2xsai,supereagle,advinterp2x,advinterp3x,\n" " tv2x,tv3x,rgb2x,rgb3x,scan2x,scan3x.\n" " If forced is appended (like scaler=hq2x forced), the scaler will be used\n" " even if the result might not be desired.\n" ); secprop=control->AddSection_prop("cpu",&CPU_Init,true);//done #if (C_DYNAMIC_X86) secprop->Add_string("core","auto"); #else secprop->Add_string("core","normal"); #endif secprop->Add_string("cycles","auto"); secprop->Add_int("cycleup",500); secprop->Add_int("cycledown",20); MSG_Add("CPU_CONFIGFILE_HELP", "core -- CPU Core used in emulation: normal,simple" #if (C_DYNAMIC_X86) ",dynamic,auto.\n" " auto switches from normal to dynamic if appropriate" #endif ".\n" "cycles -- Amount of instructions dosbox tries to emulate each millisecond.\n" " Setting this value too high results in sound dropouts and lags.\n" " You can also let DOSBox guess the correct value by setting it to max.\n" " The default setting (auto) switches to max if appropriate.\n" "cycleup -- Amount of cycles to increase/decrease with keycombo.\n" "cycledown Setting it lower than 100 will be a percentage.\n" ); #if C_FPU secprop->AddInitFunction(&FPU_Init); #endif secprop->AddInitFunction(&DMA_Init);//done secprop->AddInitFunction(&VGA_Init); secprop->AddInitFunction(&KEYBOARD_Init); secprop=control->AddSection_prop("mixer",&MIXER_Init); secprop->Add_bool("nosound",false); secprop->Add_int("rate",22050); secprop->Add_int("blocksize",2048); secprop->Add_int("prebuffer",10); MSG_Add("MIXER_CONFIGFILE_HELP", "nosound -- Enable silent mode, sound is still emulated though.\n" "rate -- Mixer sample rate, setting any devices higher than this will\n" " probably lower their sound quality.\n" "blocksize -- Mixer block size, larger blocks might help sound stuttering\n" " but sound will also be more lagged.\n" "prebuffer -- How many milliseconds of data to keep on top of the blocksize.\n" ); secprop=control->AddSection_prop("midi",&MIDI_Init,true);//done secprop->AddInitFunction(&MPU401_Init,true);//done secprop->Add_string("mpu401","intelligent"); secprop->Add_string("device","default"); secprop->Add_string("config",""); MSG_Add("MIDI_CONFIGFILE_HELP", "mpu401 -- Type of MPU-401 to emulate: none, uart or intelligent.\n" "device -- Device that will receive the MIDI data from MPU-401.\n" " This can be default,alsa,oss,win32,coreaudio,none.\n" "config -- Special configuration options for the device. In Windows put\n" " the id of the device you want to use. See README for details.\n" ); #if C_DEBUG secprop=control->AddSection_prop("debug",&DEBUG_Init); #endif secprop=control->AddSection_prop("sblaster",&SBLASTER_Init,true);//done secprop->Add_string("sbtype","sb16"); secprop->Add_hex("sbbase",0x220); secprop->Add_int("irq",7); secprop->Add_int("dma",1); secprop->Add_int("hdma",5); secprop->Add_bool("mixer",true); secprop->Add_string("oplmode","auto"); secprop->Add_int("oplrate",22050); MSG_Add("SBLASTER_CONFIGFILE_HELP", "sbtype -- Type of sblaster to emulate:none,sb1,sb2,sbpro1,sbpro2,sb16.\n" "sbbase,irq,dma,hdma -- The IO/IRQ/DMA/High DMA address of the soundblaster.\n" "mixer -- Allow the soundblaster mixer to modify the dosbox mixer.\n" "oplmode -- Type of OPL emulation: auto,cms,opl2,dualopl2,opl3.\n" " On auto the mode is determined by sblaster type.\n" " All OPL modes are 'Adlib', except for CMS.\n" "oplrate -- Sample rate of OPL music emulation.\n" ); secprop=control->AddSection_prop("gus",&GUS_Init,true); //done secprop->Add_bool("gus",true); secprop->Add_int("gusrate",22050); secprop->Add_hex("gusbase",0x240); secprop->Add_int("irq1",5); secprop->Add_int("irq2",5); secprop->Add_int("dma1",3); secprop->Add_int("dma2",3); secprop->Add_string("ultradir","C:\\ULTRASND"); MSG_Add("GUS_CONFIGFILE_HELP", "gus -- Enable the Gravis Ultrasound emulation.\n" "gusbase,irq1,irq2,dma1,dma2 -- The IO/IRQ/DMA addresses of the \n" " Gravis Ultrasound. (Same IRQ's and DMA's are OK.)\n" "gusrate -- Sample rate of Ultrasound emulation.\n" "ultradir -- Path to Ultrasound directory. In this directory\n" " there should be a MIDI directory that contains\n" " the patch files for GUS playback. Patch sets used\n" " with Timidity should work fine.\n" ); secprop=control->AddSection_prop("speaker",&PCSPEAKER_Init,true);//done secprop->Add_bool("pcspeaker",true); secprop->Add_int("pcrate",22050); secprop->AddInitFunction(&TANDYSOUND_Init,true);//done secprop->Add_string("tandy","auto"); secprop->Add_int("tandyrate",22050); secprop->AddInitFunction(&DISNEY_Init,true);//done secprop->Add_bool("disney",true); MSG_Add("SPEAKER_CONFIGFILE_HELP", "pcspeaker -- Enable PC-Speaker emulation.\n" "pcrate -- Sample rate of the PC-Speaker sound generation.\n" "tandy -- Enable Tandy Sound System emulation (off,on,auto).\n" " For auto Tandysound emulation is present only if machine is set to tandy.\n" "tandyrate -- Sample rate of the Tandy 3-Voice generation.\n" "disney -- Enable Disney Sound Source emulation. Covox Voice Master and Speech Thing compatible.\n" ); secprop=control->AddSection_prop("joystick",&BIOS_Init,false);//done MSG_Add("JOYSTICK_CONFIGFILE_HELP", "joysticktype -- Type of joystick to emulate: auto (default), none,\n" " 2axis (supports two joysticks), 4axis,\n" " fcs (Thrustmaster), ch (CH Flightstick).\n" " none disables joystick emulation.\n" " auto chooses emulation depending on real joystick(s).\n" "timed -- enable timed intervals for axis. (false is old style behaviour).\n" "autofire -- continuously fires as long as you keep the button pressed.\n" "swap34 -- swap the 3rd and the 4th axis. can be useful for certain joysticks.\n" "buttonwrap -- enable button wrapping at the number of emulated buttons.\n" ); secprop->AddInitFunction(&INT10_Init); secprop->AddInitFunction(&MOUSE_Init); //Must be after int10 as it uses CurMode secprop->AddInitFunction(&JOYSTICK_Init); secprop->Add_string("joysticktype","auto"); secprop->Add_bool("timed",true); secprop->Add_bool("autofire",false); secprop->Add_bool("swap34",false); secprop->Add_bool("buttonwrap",true); // had to rename these to serial due to conflicts in config secprop=control->AddSection_prop("serial",&SERIAL_Init,true); secprop->Add_string("serial1","dummy"); secprop->Add_string("serial2","dummy"); secprop->Add_string("serial3","disabled"); secprop->Add_string("serial4","disabled"); MSG_Add("SERIAL_CONFIGFILE_HELP", "serial1-4 -- set type of device connected to com port.\n" " Can be disabled, dummy, modem, nullmodem, directserial.\n" " Additional parameters must be in the same line in the form of\n" " parameter:value. Parameter for all types is irq.\n" " for directserial: realport (required), rxdelay (optional).\n" " for modem: listenport (optional).\n" " for nullmodem: server, rxdelay, txdelay, telnet, usedtr,\n" " transparent, port, inhsocket (all optional).\n" " Example: serial1=modem listenport:5000\n" ); /* All the DOS Related stuff, which will eventually start up in the shell */ //TODO Maybe combine most of the dos stuff in one section like ems,xms secprop=control->AddSection_prop("dos",&DOS_Init,false);//done secprop->AddInitFunction(&XMS_Init,true);//done secprop->Add_bool("xms",true); secprop->AddInitFunction(&EMS_Init,true);//done secprop->Add_bool("ems",true); secprop->Add_bool("umb",true); secprop->AddInitFunction(&DOS_KeyboardLayout_Init,true); secprop->Add_string("keyboardlayout", "none"); MSG_Add("DOS_CONFIGFILE_HELP", "xms -- Enable XMS support.\n" "ems -- Enable EMS support.\n" "umb -- Enable UMB support.\n" "keyboardlayout -- Language code of the keyboard layout (or none).\n" ); // Mscdex secprop->AddInitFunction(&MSCDEX_Init); secprop->AddInitFunction(&DRIVES_Init); secprop->AddInitFunction(&CDROM_Image_Init); #if C_IPX secprop=control->AddSection_prop("ipx",&IPX_Init,true); secprop->Add_bool("ipx", false); MSG_Add("IPX_CONFIGFILE_HELP", "ipx -- Enable ipx over UDP/IP emulation.\n" ); #endif // secprop->AddInitFunction(&CREDITS_Init); secline=control->AddSection_line("autoexec",&AUTOEXEC_Init); MSG_Add("AUTOEXEC_CONFIGFILE_HELP", "Lines in this section will be run at startup.\n" ); control->SetStartUp(&SHELL_Init); }