// Pico Library - Internal Header File // (c) Copyright 2004 Dave, All rights reserved. // (c) Copyright 2006,2007 Grazvydas "notaz" Ignotas, all rights reserved. // Free for non-commercial use. // For commercial use, separate licencing terms must be obtained. #ifndef PICO_INTERNAL_INCLUDED #define PICO_INTERNAL_INCLUDED #include #include #include #include "Pico.h" // #define USE_POLL_DETECT #ifndef PICO_INTERNAL #define PICO_INTERNAL #endif #ifndef PICO_INTERNAL_ASM #define PICO_INTERNAL_ASM #endif // to select core, define EMU_C68K, EMU_M68K or EMU_A68K in your makefile or project #ifdef __cplusplus extern "C" { #endif // ----------------------- 68000 CPU ----------------------- #ifdef EMU_C68K #include "../cpu/Cyclone/Cyclone.h" extern struct Cyclone PicoCpu, PicoCpuS68k; #define SekCyclesLeftNoMCD PicoCpu.cycles // cycles left for this run #define SekCyclesLeft \ (((PicoMCD&1) && (PicoOpt & 0x2000)) ? (SekCycleAim-SekCycleCnt) : SekCyclesLeftNoMCD) #define SekCyclesLeftS68k \ ((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoCpuS68k.cycles) #define SekSetCyclesLeftNoMCD(c) PicoCpu.cycles=c #define SekSetCyclesLeft(c) { \ if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCycleCnt=SekCycleAim-(c); else SekSetCyclesLeftNoMCD(c); \ } #define SekPc (PicoCpu.pc-PicoCpu.membase) #define SekPcS68k (PicoCpuS68k.pc-PicoCpuS68k.membase) #define SekSetStop(x) { PicoCpu.state_flags&=~1; if (x) { PicoCpu.state_flags|=1; PicoCpu.cycles=0; } } #define SekSetStopS68k(x) { PicoCpuS68k.state_flags&=~1; if (x) { PicoCpuS68k.state_flags|=1; PicoCpuS68k.cycles=0; } } #endif #ifdef EMU_A68K void __cdecl M68000_RUN(); // The format of the data in a68k.asm (at the _M68000_regs location) struct A68KContext { unsigned int d[8],a[8]; unsigned int isp,srh,ccr,xc,pc,irq,sr; int (*IrqCallback) (int nIrq); unsigned int ppc; void *pResetCallback; unsigned int sfc,dfc,usp,vbr; unsigned int AsmBank,CpuVersion; }; struct A68KContext M68000_regs; extern int m68k_ICount; #define SekCyclesLeft m68k_ICount #define SekSetCyclesLeft(c) m68k_ICount=c #define SekPc M68000_regs.pc #endif #ifdef EMU_M68K #include "../cpu/musashi/m68kcpu.h" extern m68ki_cpu_core PicoM68kCPU; // MD's CPU extern m68ki_cpu_core PicoS68kCPU; // Mega CD's CPU #ifndef SekCyclesLeft #define SekCyclesLeftNoMCD PicoM68kCPU.cyc_remaining_cycles #define SekCyclesLeft \ (((PicoMCD&1) && (PicoOpt & 0x2000)) ? (SekCycleAim-SekCycleCnt) : SekCyclesLeftNoMCD) #define SekCyclesLeftS68k \ ((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoS68kCPU.cyc_remaining_cycles) #define SekSetCyclesLeftNoMCD(c) SET_CYCLES(c) #define SekSetCyclesLeft(c) { \ if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCycleCnt=SekCycleAim-(c); else SET_CYCLES(c); \ } #define SekPc m68k_get_reg(&PicoM68kCPU, M68K_REG_PC) #define SekPcS68k m68k_get_reg(&PicoS68kCPU, M68K_REG_PC) #define SekSetStop(x) { \ if(x) { SET_CYCLES(0); PicoM68kCPU.stopped=STOP_LEVEL_STOP; } \ else PicoM68kCPU.stopped=0; \ } #define SekSetStopS68k(x) { \ if(x) { SET_CYCLES(0); PicoS68kCPU.stopped=STOP_LEVEL_STOP; } \ else PicoS68kCPU.stopped=0; \ } #endif #endif extern int SekCycleCnt; // cycles done in this frame extern int SekCycleAim; // cycle aim extern unsigned int SekCycleCntT; // total cycle counter, updated once per frame #define SekCyclesReset() {SekCycleCntT+=SekCycleCnt;SekCycleCnt=SekCycleAim=0;} #define SekCyclesBurn(c) SekCycleCnt+=c #define SekCyclesDone() (SekCycleAim-SekCyclesLeft) // nuber of cycles done in this frame (can be checked anywhere) #define SekCyclesDoneT() (SekCycleCntT+SekCyclesDone()) // total nuber of cycles done for this rom #define SekEndRun(after) { \ SekCycleCnt -= SekCyclesLeft - after; \ if(SekCycleCnt < 0) SekCycleCnt = 0; \ SekSetCyclesLeft(after); \ } extern int SekCycleCntS68k; extern int SekCycleAimS68k; #define SekCyclesResetS68k() {SekCycleCntS68k=SekCycleAimS68k=0;} #define SekCyclesDoneS68k() (SekCycleAimS68k-SekCyclesLeftS68k) // debug cyclone #if defined(EMU_C68K) && defined(EMU_M68K) #undef SekSetCyclesLeftNoMCD #undef SekSetCyclesLeft #undef SekCyclesBurn #undef SekEndRun #define SekSetCyclesLeftNoMCD(c) #define SekSetCyclesLeft(c) #define SekCyclesBurn(c) c #define SekEndRun(c) #endif extern int PicoMCD; // --------------------------------------------------------- // main oscillator clock which controls timing #define OSC_NTSC 53693100 #define OSC_PAL 53203424 // not accurate struct PicoVideo { unsigned char reg[0x20]; unsigned int command; // 32-bit Command unsigned char pending; // 1 if waiting for second half of 32-bit command unsigned char type; // Command type (v/c/vsram read/write) unsigned short addr; // Read/Write address int status; // Status bits unsigned char pending_ints; // pending interrupts: ??VH???? unsigned char pad[0x13]; }; struct PicoMisc { unsigned char rotate; unsigned char z80Run; unsigned char padTHPhase[2]; // phase of gamepad TH switches short scanline; // 0 to 261||311; -1 in fast mode char dirtyPal; // Is the palette dirty (1 - change @ this frame, 2 - some time before) unsigned char hardware; // Hardware value for country unsigned char pal; // 1=PAL 0=NTSC unsigned char sram_reg; // SRAM mode register. bit0: allow read? bit1: deny write? bit2: EEPROM? bit4: detected? (header or by access) unsigned short z80_bank68k; unsigned short z80_lastaddr; // this is for Z80 faking unsigned char z80_fakeval; unsigned char pad0; unsigned char padDelay[2]; // gamepad phase time outs, so we count a delay unsigned short sram_addr; // EEPROM address register unsigned char sram_cycle; // EEPROM SRAM cycle number unsigned char sram_slave; // EEPROM slave word for X24C02 and better SRAMs unsigned char prot_bytes[2]; // simple protection faking unsigned short dma_bytes; // unsigned char pad[2]; unsigned int frame_count; // mainly for movies }; // some assembly stuff depend on these, do not touch! struct Pico { unsigned char ram[0x10000]; // 0x00000 scratch ram unsigned short vram[0x8000]; // 0x10000 unsigned char zram[0x2000]; // 0x20000 Z80 ram unsigned char ioports[0x10]; unsigned int pad[0x3c]; // unused unsigned short cram[0x40]; // 0x22100 unsigned short vsram[0x40]; // 0x22180 unsigned char *rom; // 0x22200 unsigned int romsize; // 0x22204 struct PicoMisc m; struct PicoVideo video; }; // sram struct PicoSRAM { unsigned char *data; // actual data unsigned int start; // start address in 68k address space unsigned int end; unsigned char resize; // 0c: 1=SRAM size changed and needs to be reallocated on PicoReset unsigned char reg_back; // copy of Pico.m.sram_reg to set after reset unsigned char changed; unsigned char pad; }; // MCD #include "cd/cd_sys.h" #include "cd/LC89510.h" #include "cd/gfx_cd.h" struct mcd_pcm { unsigned char control; // reg7 unsigned char enabled; // reg8 unsigned char cur_ch; unsigned char bank; int pad1; struct pcm_chan // 08, size 0x10 { unsigned char regs[8]; unsigned int addr; // .08: played sample address int pad; } ch[8]; }; struct mcd_misc { unsigned short hint_vector; unsigned char busreq; unsigned char s68k_pend_ints; unsigned int state_flags; // 04: emu state: reset_pending, dmna_pending unsigned int counter75hz; unsigned short audio_offset; // 0c: for savestates: play pointer offset (0-1023) unsigned char audio_track; // playing audio track # (zero based) char pad1; int timer_int3; // 10 unsigned int timer_stopwatch; unsigned char bcram_reg; // 18: battery-backed RAM cart register unsigned char pad2; unsigned short pad3; int pad[9]; }; typedef struct { unsigned char bios[0x20000]; // 000000: 128K union { // 020000: 512K unsigned char prg_ram[0x80000]; unsigned char prg_ram_b[4][0x20000]; }; union { // 0a0000: 256K struct { unsigned char word_ram2M[0x40000]; unsigned char unused[0x20000]; }; struct { unsigned char unused[0x20000]; unsigned char word_ram1M[2][0x20000]; }; }; union { // 100000: 64K unsigned char pcm_ram[0x10000]; unsigned char pcm_ram_b[0x10][0x1000]; }; unsigned char s68k_regs[0x200]; // 110000: GA, not CPU regs unsigned char bram[0x2000]; // 110200: 8K struct mcd_misc m; // 112200: misc struct mcd_pcm pcm; // 112240: _scd_toc TOC; // not to be saved CDD cdd; CDC cdc; _scd scd; Rot_Comp rot_comp; } mcd_state; #define Pico_mcd ((mcd_state *)Pico.rom) // Area.c PICO_INTERNAL int PicoAreaPackCpu(unsigned char *cpu, int is_sub); PICO_INTERNAL int PicoAreaUnpackCpu(unsigned char *cpu, int is_sub); // cd/Area.c PICO_INTERNAL int PicoCdSaveState(void *file); PICO_INTERNAL int PicoCdLoadState(void *file); // Draw.c PICO_INTERNAL int PicoLine(int scan); PICO_INTERNAL void PicoFrameStart(void); // Draw2.c PICO_INTERNAL void PicoFrameFull(); // Memory.c PICO_INTERNAL int PicoInitPc(unsigned int pc); PICO_INTERNAL_ASM unsigned int CPU_CALL PicoRead32(unsigned int a); PICO_INTERNAL void PicoMemSetup(void); PICO_INTERNAL_ASM void PicoMemReset(void); PICO_INTERNAL unsigned char z80_read(unsigned short a); PICO_INTERNAL unsigned short z80_read16(unsigned short a); PICO_INTERNAL_ASM void z80_write(unsigned char data, unsigned short a); PICO_INTERNAL void z80_write16(unsigned short data, unsigned short a); // cd/Memory.c PICO_INTERNAL void PicoMemSetupCD(void); PICO_INTERNAL_ASM void PicoMemResetCD(int r3); PICO_INTERNAL_ASM void PicoMemResetCDdecode(int r3); // Pico.c extern struct Pico Pico; extern struct PicoSRAM SRam; extern int emustatus; extern int z80startCycle, z80stopCycle; // in 68k cycles PICO_INTERNAL int CheckDMA(void); // cd/Pico.c PICO_INTERNAL int PicoInitMCD(void); PICO_INTERNAL int PicoResetMCD(int hard); PICO_INTERNAL int PicoFrameMCD(void); // Sek.c PICO_INTERNAL int SekInit(void); PICO_INTERNAL int SekReset(void); PICO_INTERNAL int SekInterrupt(int irq); PICO_INTERNAL void SekState(unsigned char *data); PICO_INTERNAL void SekSetRealTAS(int use_real); // cd/Sek.c PICO_INTERNAL int SekInitS68k(void); PICO_INTERNAL int SekResetS68k(void); PICO_INTERNAL int SekInterruptS68k(int irq); // sound/sound.c extern int PsndLen_exc_cnt; extern int PsndLen_exc_add; // VideoPort.c PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d); PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a); // Misc.c PICO_INTERNAL void SRAMWriteEEPROM(unsigned int d); PICO_INTERNAL void SRAMUpdPending(unsigned int a, unsigned int d); PICO_INTERNAL_ASM unsigned int SRAMReadEEPROM(void); PICO_INTERNAL_ASM void memcpy16(unsigned short *dest, unsigned short *src, int count); PICO_INTERNAL_ASM void memcpy16bswap(unsigned short *dest, void *src, int count); PICO_INTERNAL_ASM void memcpy32(int *dest, int *src, int count); // 32bit word count PICO_INTERNAL_ASM void memset32(int *dest, int c, int count); // cd/Misc.c PICO_INTERNAL_ASM void wram_2M_to_1M(unsigned char *m); PICO_INTERNAL_ASM void wram_1M_to_2M(unsigned char *m); // cd/buffering.c PICO_INTERNAL void PicoCDBufferRead(void *dest, int lba); // sound/sound.c PICO_INTERNAL void sound_reset(void); PICO_INTERNAL void sound_timers_and_dac(int raster); PICO_INTERNAL int sound_render(int offset, int length); PICO_INTERNAL void sound_clear(void); // z80 functionality wrappers PICO_INTERNAL void z80_init(void); PICO_INTERNAL void z80_resetCycles(void); PICO_INTERNAL void z80_int(void); PICO_INTERNAL int z80_run(int cycles); PICO_INTERNAL void z80_pack(unsigned char *data); PICO_INTERNAL void z80_unpack(unsigned char *data); PICO_INTERNAL void z80_reset(void); PICO_INTERNAL void z80_exit(void); #ifdef __cplusplus } // End of extern "C" #endif #endif // PICO_INTERNAL_INCLUDED