/** VGB: portable GameBoy emulator ***************************/ /** **/ /** GB.h **/ /** **/ /** This file contains definitions for the GameBoy hardware **/ /** emulation. **/ /** **/ /** Copyright (C) Marat Fayzullin 1995 **/ /** You are not allowed to distribute this software **/ /** commercially. Please, notify me, if you make any **/ /** changes to this file. **/ /*************************************************************/ /* Amiga includes */ #include #include #include #include #include #include #include #include #include "Z80.h" #define NORAM 0xFF #define MAXCHEAT 256 #define VBL_IFLAG 0x01 #define LCD_IFLAG 0x02 #define TIM_IFLAG 0x04 #define SIO_IFLAG 0x08 #define JOY_IFLAG 0x10 #define JOYPAD RAM[0xFF00] /* Joystick: 1.1.P15.P14.P13.P12.P11.P10 */ #define SIODATA RAM[0xFF01] /* Serial IO data buffer */ #define SIOCONT RAM[0xFF02] /* Serial IO control register */ #define DIVREG RAM[0xFF04] /* Divider register (???) */ #define TIMECNT RAM[0xFF05] /* Timer counter. Gen. int. when it overflows */ #define TIMEMOD RAM[0xFF06] /* New value of TimeCount after it overflows */ #define TIMEFRQ RAM[0xFF07] /* Timer frequency and start/stop switch */ #define IFLAGS RAM[0xFF0F] /* Interrupt flags: 0.0.0.JST.SIO.TIM.LCD.VBL */ #define ISWITCH RAM[0xFFFF] /* Switches to enable/disable interrupts */ #define LCDCONT RAM[0xFF40] /* LCD control register */ #define LCDSTAT RAM[0xFF41] /* LCD status register */ #define SCROLLY RAM[0xFF42] /* Starting Y position of the background */ #define SCROLLX RAM[0xFF43] /* Starting X position of the background */ #define CURLINE RAM[0xFF44] /* Current screen line being scanned */ #define CMPLINE RAM[0xFF45] /* Gen. int. when scan reaches this line */ #define BGRDPAL RAM[0xFF47] /* Background palette */ #define SPR0PAL RAM[0xFF48] /* Sprite palette #0 */ #define SPR1PAL RAM[0xFF49] /* Sprite palette #1 */ #define WNDPOSY RAM[0xFF4A] /* Window Y position */ #define WNDPOSX RAM[0xFF4B] /* Window X position */ #define SNDREG10 RAM[0xFF10] #define SNDREG11 RAM[0xFF11] #define SNDREG12 RAM[0xFF12] #define SNDREG13 RAM[0xFF13] #define SNDREG14 RAM[0xFF14] #define SNDREG21 RAM[0xFF16] #define SNDREG22 RAM[0xFF17] #define SNDREG23 RAM[0xFF18] #define SNDREG24 RAM[0xFF19] #define SNDREG30 RAM[0xFF1A] #define SNDREG31 RAM[0xFF1B] #define SNDREG32 RAM[0xFF1C] #define SNDREG33 RAM[0xFF1D] #define SNDREG34 RAM[0xFF1E] #define SNDREG41 RAM[0xFF20] #define SNDREG42 RAM[0xFF21] #define SNDREG43 RAM[0xFF22] #define SNDREG44 RAM[0xFF23] #define SNDREG50 RAM[0xFF24] #define SNDREG51 RAM[0xFF25] #define SNDREG52 RAM[0xFF26] extern byte Verbose; /* Verboseness level */ extern byte *RAM; /* Pointer to Z80 address space (64kB) */ extern int UPeriod; /* Number of VBlanks per screen update */ extern int VPeriod; /* Number of Z80 cycles between VBlanks */ extern byte LineDelay; /* When 1, CMPLINE interrupts are delayed */ extern int ROMBanks; /* Total number of ROM banks */ extern int RAMBanks; /* Total number of RAM banks */ extern byte BPal[4]; /* Background palette */ extern byte SPal0[4],SPal1[4];/* Sprite palettes */ extern byte *ChrGen; /* Character generator */ extern byte *BgdTab,*WndTab; /* Background and window character tables */ void M_WRMEM(word A,byte V); /****************************************************************/ /*** Initialize and start GameBoy emulation. This function ***/ /*** returns 0 in the case of failure. ***/ /****************************************************************/ int StartGB(char *CartName); /****************************************************************/ /*** Free resources allocated by StartGB(). ***/ /****************************************************************/ void TrashGB(void); /****************************************************************/ /*** Add a cheat to the cheat list [call before StartGB()]. ***/ /****************************************************************/ int AddCheat(char *Cheat); /****************************************************************/ /*** Allocate resources needed by the machine-dependent code. ***/ /************************************** TO BE WRITTEN BY USER ***/ int InitMachine(void); /****************************************************************/ /*** Deallocate all resources taken by InitMachine(). ***/ /************************************** TO BE WRITTEN BY USER ***/ void TrashMachine(void); /****************************************************************/ /*** Refresh screen. ***/ /************************************** TO BE WRITTEN BY USER ***/ void RefreshScreen(void); /****************************************************************/ /*** Refresh line Y [0-143]. ***/ /************************************** TO BE WRITTEN BY USER ***/ void RefreshLine(byte Y); /****************************************************************/ /*** Refresh sprites. ***/ /************************************** TO BE WRITTEN BY USER ***/ void RefreshSprites(void); /****************************************************************/ /*** Get joystick state: START.SELECT.B.A.D.U.L.R. ***/ /************************************** TO BE WRITTEN BY USER ***/ byte Joystick(void); /****************************************************************/ /*** Amiga specific functions and defines ***/ /************************************** TO BE WRITTEN BY USER ***/ STRPTR ReqFile(void); void __inline AllocatePens(void); extern void __asm StartDisplay(register __d0 byte Y); BOOL __inline InitSound(void); void __inline FreeSound(void); struct IOAudio *NewIOBlock(UBYTE*); void FreeIOBlock(struct IOAudio*); void __inline PlaySound(void); void __inline PlaySample(UBYTE*, UWORD, UWORD, UBYTE, UBYTE); #define OPT_VERBOSE ((ULONG*)(ArgPtrs[0])) #define OPT_VPER ((ULONG*)(ArgPtrs[1])) #define OPT_UPER ((ULONG*)(ArgPtrs[2])) #define OPT_TRAP ((STRPTR)(ArgPtrs[3])) #define OPT_HELP ((BOOL)(ArgPtrs[4])) #define OPT_SCALEUP ((BOOL)(ArgPtrs[5]))