mirror of
https://github.com/libretro/snes9x.git
synced 2024-11-23 08:19:46 +00:00
342 lines
8.1 KiB
C
342 lines
8.1 KiB
C
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#ifndef _SNES9X_H_
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#define _SNES9X_H_
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#ifndef VERSION
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#define VERSION "1.61"
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#endif
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#include "port.h"
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#include "65c816.h"
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#include "messages.h"
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#ifdef ZLIB
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#include <zlib.h>
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#define FSTREAM gzFile
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#define READ_FSTREAM(p, l, s) gzread(s, p, l)
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#define WRITE_FSTREAM(p, l, s) gzwrite(s, p, l)
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#define GETS_FSTREAM(p, l, s) gzgets(s, p, l)
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#define GETC_FSTREAM(s) gzgetc(s)
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#define OPEN_FSTREAM(f, m) gzopen(f, m)
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#define REOPEN_FSTREAM(f, m) gzdopen(f, m)
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#define FIND_FSTREAM(f) gztell(f)
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#define REVERT_FSTREAM(s, o, p) gzseek(s, o, p)
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#define CLOSE_FSTREAM(s) gzclose(s)
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#else
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#define FSTREAM FILE *
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#define READ_FSTREAM(p, l, s) fread(p, 1, l, s)
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#define WRITE_FSTREAM(p, l, s) fwrite(p, 1, l, s)
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#define GETS_FSTREAM(p, l, s) fgets(p, l, s)
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#define GETC_FSTREAM(s) fgetc(s)
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#define OPEN_FSTREAM(f, m) fopen(f, m)
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#define REOPEN_FSTREAM(f, m) fdopen(f, m)
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#define FIND_FSTREAM(s) ftell(s)
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#define REVERT_FSTREAM(s, o, p) fseek(s, o, p)
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#define CLOSE_FSTREAM(s) fclose(s)
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#endif
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#include "stream.h"
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#define STREAM Stream *
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#define READ_STREAM(p, l, s) s->read(p,l)
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#define WRITE_STREAM(p, l, s) s->write(p,l)
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#define GETS_STREAM(p, l, s) s->gets(p,l)
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#define GETC_STREAM(s) s->get_char()
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#define OPEN_STREAM(f, m) openStreamFromFSTREAM(f, m)
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#define REOPEN_STREAM(f, m) reopenStreamFromFd(f, m)
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#define FIND_STREAM(s) s->pos()
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#define REVERT_STREAM(s, o, p) s->revert(p, o)
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#define CLOSE_STREAM(s) s->closeStream()
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#define SNES_WIDTH 256
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#define SNES_HEIGHT 224
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#define SNES_HEIGHT_EXTENDED 239
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#define MAX_SNES_WIDTH (SNES_WIDTH * 2)
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#define MAX_SNES_HEIGHT (SNES_HEIGHT_EXTENDED * 2)
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#define NTSC_MASTER_CLOCK 21477272.727272 // 21477272 + 8/11 exact
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#define PAL_MASTER_CLOCK 21281370.0
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#define SNES_MAX_NTSC_VCOUNTER 262
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#define SNES_MAX_PAL_VCOUNTER 312
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#define SNES_HCOUNTER_MAX 341
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#ifndef ALLOW_CPU_OVERCLOCK
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#define ONE_CYCLE 6
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#define SLOW_ONE_CYCLE 8
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#define TWO_CYCLES 12
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#else
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#define ONE_CYCLE (Settings.OneClockCycle)
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#define SLOW_ONE_CYCLE (Settings.OneSlowClockCycle)
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#define TWO_CYCLES (Settings.TwoClockCycles)
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#endif
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#define ONE_DOT_CYCLE 4
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#define SNES_CYCLES_PER_SCANLINE (SNES_HCOUNTER_MAX * ONE_DOT_CYCLE)
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#define SNES_SCANLINE_TIME (SNES_CYCLES_PER_SCANLINE / NTSC_MASTER_CLOCK)
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#define SNES_WRAM_REFRESH_HC_v1 530
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#define SNES_WRAM_REFRESH_HC_v2 538
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#define SNES_WRAM_REFRESH_CYCLES 40
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#define SNES_HBLANK_START_HC 1096 // H=274
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#define SNES_HDMA_START_HC 1106 // FIXME: not true
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#define SNES_HBLANK_END_HC 4 // H=1
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#define SNES_HDMA_INIT_HC 20 // FIXME: not true
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#define SNES_RENDER_START_HC (128 * ONE_DOT_CYCLE) // FIXME: Snes9x renders a line at a time.
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#define SNES_TR_MASK (1 << 4)
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#define SNES_TL_MASK (1 << 5)
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#define SNES_X_MASK (1 << 6)
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#define SNES_A_MASK (1 << 7)
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#define SNES_RIGHT_MASK (1 << 8)
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#define SNES_LEFT_MASK (1 << 9)
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#define SNES_DOWN_MASK (1 << 10)
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#define SNES_UP_MASK (1 << 11)
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#define SNES_START_MASK (1 << 12)
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#define SNES_SELECT_MASK (1 << 13)
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#define SNES_Y_MASK (1 << 14)
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#define SNES_B_MASK (1 << 15)
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#define DEBUG_MODE_FLAG (1 << 0) // debugger
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#define TRACE_FLAG (1 << 1) // debugger
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#define SINGLE_STEP_FLAG (1 << 2) // debugger
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#define BREAK_FLAG (1 << 3) // debugger
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#define SCAN_KEYS_FLAG (1 << 4) // CPU
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#define HALTED_FLAG (1 << 12) // APU
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#define FRAME_ADVANCE_FLAG (1 << 9)
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#define ROM_NAME_LEN 23
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#define AUTO_FRAMERATE 200
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struct SCPUState
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{
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uint32 Flags;
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int32 Cycles;
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int32 PrevCycles;
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int32 V_Counter;
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uint8 *PCBase;
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bool8 NMIPending;
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bool8 IRQLine;
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bool8 IRQTransition;
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bool8 IRQLastState;
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bool8 IRQExternal;
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int32 IRQPending;
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int32 MemSpeed;
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int32 MemSpeedx2;
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int32 FastROMSpeed;
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bool8 InDMA;
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bool8 InHDMA;
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bool8 InDMAorHDMA;
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bool8 InWRAMDMAorHDMA;
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uint8 HDMARanInDMA;
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int32 CurrentDMAorHDMAChannel;
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uint8 WhichEvent;
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int32 NextEvent;
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bool8 WaitingForInterrupt;
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uint32 AutoSaveTimer;
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bool8 SRAMModified;
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};
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enum
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{
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HC_HBLANK_START_EVENT = 1,
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HC_HDMA_START_EVENT = 2,
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HC_HCOUNTER_MAX_EVENT = 3,
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HC_HDMA_INIT_EVENT = 4,
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HC_RENDER_EVENT = 5,
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HC_WRAM_REFRESH_EVENT = 6
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};
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enum
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{
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IRQ_NONE = 0x0,
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IRQ_SET_FLAG = 0x1,
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IRQ_CLEAR_FLAG = 0x2,
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IRQ_TRIGGER_NMI = 0x4
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};
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struct STimings
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{
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int32 H_Max_Master;
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int32 H_Max;
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int32 V_Max_Master;
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int32 V_Max;
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int32 HBlankStart;
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int32 HBlankEnd;
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int32 HDMAInit;
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int32 HDMAStart;
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int32 NMITriggerPos;
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int32 NextIRQTimer;
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int32 IRQTriggerCycles;
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int32 WRAMRefreshPos;
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int32 RenderPos;
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bool8 InterlaceField;
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int32 DMACPUSync; // The cycles to synchronize DMA and CPU. Snes9x cannot emulate correctly.
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int32 NMIDMADelay; // The delay of NMI trigger after DMA transfers. Snes9x cannot emulate correctly.
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int32 IRQFlagChanging; // This value is just a hack.
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int32 APUSpeedup;
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bool8 APUAllowTimeOverflow;
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};
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struct SSettings
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{
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bool8 TraceDMA;
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bool8 TraceHDMA;
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bool8 TraceVRAM;
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bool8 TraceUnknownRegisters;
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bool8 TraceDSP;
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bool8 TraceHCEvent;
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bool8 TraceSMP;
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bool8 SuperFX;
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uint8 DSP;
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bool8 SA1;
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bool8 C4;
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bool8 SDD1;
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bool8 SPC7110;
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bool8 SPC7110RTC;
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bool8 OBC1;
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uint8 SETA;
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bool8 SRTC;
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bool8 BS;
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bool8 BSXItself;
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bool8 BSXBootup;
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bool8 MSU1;
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bool8 MouseMaster;
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bool8 SuperScopeMaster;
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bool8 JustifierMaster;
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bool8 MultiPlayer5Master;
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bool8 MacsRifleMaster;
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bool8 ForceLoROM;
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bool8 ForceHiROM;
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bool8 ForceHeader;
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bool8 ForceNoHeader;
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bool8 ForceInterleaved;
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bool8 ForceInterleaved2;
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bool8 ForceInterleaveGD24;
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bool8 ForceNotInterleaved;
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bool8 ForcePAL;
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bool8 ForceNTSC;
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bool8 PAL;
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uint32 FrameTimePAL;
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uint32 FrameTimeNTSC;
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uint32 FrameTime;
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bool8 SoundSync;
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bool8 SixteenBitSound;
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uint32 SoundPlaybackRate;
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uint32 SoundInputRate;
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bool8 Stereo;
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bool8 ReverseStereo;
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bool8 Mute;
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bool8 DynamicRateControl;
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int32 DynamicRateLimit; /* Multiplied by 1000 */
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int32 InterpolationMethod;
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bool8 Transparency;
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uint8 BG_Forced;
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bool8 DisableGraphicWindows;
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bool8 DisplayTime;
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bool8 DisplayFrameRate;
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bool8 DisplayWatchedAddresses;
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bool8 DisplayPressedKeys;
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bool8 DisplayMovieFrame;
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bool8 AutoDisplayMessages;
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uint32 InitialInfoStringTimeout;
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uint16 DisplayColor;
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bool8 BilinearFilter;
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bool8 Multi;
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char CartAName[PATH_MAX + 1];
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char CartBName[PATH_MAX + 1];
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bool8 DisableGameSpecificHacks;
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bool8 BlockInvalidVRAMAccessMaster;
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bool8 BlockInvalidVRAMAccess;
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int32 HDMATimingHack;
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bool8 ForcedPause;
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bool8 Paused;
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bool8 StopEmulation;
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uint32 SkipFrames;
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uint32 TurboSkipFrames;
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uint32 AutoMaxSkipFrames;
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bool8 TurboMode;
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uint32 HighSpeedSeek;
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bool8 FrameAdvance;
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bool8 Rewinding;
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bool8 NetPlay;
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bool8 NetPlayServer;
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char ServerName[128];
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int Port;
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bool8 MovieTruncate;
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bool8 MovieNotifyIgnored;
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bool8 WrongMovieStateProtection;
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bool8 DumpStreams;
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int DumpStreamsMaxFrames;
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bool8 TakeScreenshot;
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int8 StretchScreenshots;
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bool8 SnapshotScreenshots;
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char InitialSnapshotFilename[PATH_MAX + 1];
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bool8 FastSavestates;
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bool8 ApplyCheats;
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bool8 NoPatch;
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bool8 IgnorePatchChecksum;
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bool8 IsPatched;
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int32 AutoSaveDelay;
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bool8 DontSaveOopsSnapshot;
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bool8 UpAndDown;
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bool8 SeparateEchoBuffer;
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uint32 SuperFXClockMultiplier;
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int OverclockMode;
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int OneClockCycle;
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int OneSlowClockCycle;
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int TwoClockCycles;
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int MaxSpriteTilesPerLine;
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};
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struct SSNESGameFixes
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{
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uint8 SRAMInitialValue;
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uint8 Uniracers;
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};
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enum
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{
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PAUSE_NETPLAY_CONNECT = (1 << 0),
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PAUSE_TOGGLE_FULL_SCREEN = (1 << 1),
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PAUSE_EXIT = (1 << 2),
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PAUSE_MENU = (1 << 3),
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PAUSE_INACTIVE_WINDOW = (1 << 4),
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PAUSE_WINDOW_ICONISED = (1 << 5),
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PAUSE_RESTORE_GUI = (1 << 6),
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PAUSE_FREEZE_FILE = (1 << 7)
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};
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void S9xSetPause(uint32);
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void S9xClearPause(uint32);
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void S9xExit(void);
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void S9xMessage(int, int, const char *);
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extern struct SSettings Settings;
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extern struct SCPUState CPU;
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extern struct STimings Timings;
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extern struct SSNESGameFixes SNESGameFixes;
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extern char String[513];
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#endif
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