1/* Copyright (c) 2013-2016 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#ifndef GB_H
  7#define GB_H
  8
  9#include "util/common.h"
 10
 11#include "core/log.h"
 12
 13#include "lr35902/lr35902.h"
 14
 15#include "gb/audio.h"
 16#include "gb/interface.h"
 17#include "gb/memory.h"
 18#include "gb/sio.h"
 19#include "gb/timer.h"
 20#include "gb/video.h"
 21
 22extern const uint32_t DMG_LR35902_FREQUENCY;
 23extern const uint32_t CGB_LR35902_FREQUENCY;
 24extern const uint32_t SGB_LR35902_FREQUENCY;
 25
 26mLOG_DECLARE_CATEGORY(GB);
 27
 28// TODO: Prefix GBAIRQ
 29enum GBIRQ {
 30	GB_IRQ_VBLANK = 0x0,
 31	GB_IRQ_LCDSTAT = 0x1,
 32	GB_IRQ_TIMER = 0x2,
 33	GB_IRQ_SIO = 0x3,
 34	GB_IRQ_KEYPAD = 0x4,
 35};
 36
 37enum GBIRQVector {
 38	GB_VECTOR_VBLANK = 0x40,
 39	GB_VECTOR_LCDSTAT = 0x48,
 40	GB_VECTOR_TIMER = 0x50,
 41	GB_VECTOR_SIO = 0x58,
 42	GB_VECTOR_KEYPAD = 0x60,
 43};
 44
 45struct mCoreSync;
 46struct mAVStream;
 47struct mCoreCallbacks;
 48struct GB {
 49	struct mCPUComponent d;
 50
 51	struct LR35902Core* cpu;
 52	struct GBMemory memory;
 53	struct GBVideo video;
 54	struct GBTimer timer;
 55	struct GBAudio audio;
 56	struct GBSIO sio;
 57	enum GBModel model;
 58
 59	struct mCoreSync* sync;
 60
 61	uint8_t* keySource;
 62
 63	void* pristineRom;
 64	size_t pristineRomSize;
 65	size_t yankedRomSize;
 66	uint32_t romCrc32;
 67	struct VFile* romVf;
 68	struct VFile* biosVf;
 69	struct VFile* sramVf;
 70	struct VFile* sramRealVf;
 71	uint32_t sramSize;
 72	int sramDirty;
 73	int32_t sramDirtAge;
 74	bool sramMaskWriteback;
 75
 76	struct mCoreCallbacks* coreCallbacks;
 77	struct mAVStream* stream;
 78
 79	int32_t eiPending;
 80	unsigned doubleSpeed;
 81};
 82
 83struct GBCartridge {
 84	uint8_t entry[4];
 85	uint8_t logo[48];
 86	union {
 87		char titleLong[16];
 88		struct {
 89			char titleShort[11];
 90			char maker[4];
 91			uint8_t cgb;
 92		};
 93	};
 94	char licensee[2];
 95	uint8_t sgb;
 96	uint8_t type;
 97	uint8_t romSize;
 98	uint8_t ramSize;
 99	uint8_t region;
100	uint8_t oldLicensee;
101	uint8_t version;
102	uint8_t headerChecksum;
103	uint16_t globalChecksum;
104	// And ROM data...
105};
106
107void GBCreate(struct GB* gb);
108void GBDestroy(struct GB* gb);
109
110void GBReset(struct LR35902Core* cpu);
111void GBDetectModel(struct GB* gb);
112
113void GBUpdateIRQs(struct GB* gb);
114void GBHalt(struct LR35902Core* cpu);
115
116struct VFile;
117bool GBLoadROM(struct GB* gb, struct VFile* vf);
118bool GBLoadSave(struct GB* gb, struct VFile* vf);
119void GBYankROM(struct GB* gb);
120void GBUnloadROM(struct GB* gb);
121
122bool GBIsBIOS(struct VFile* vf);
123void GBLoadBIOS(struct GB* gb, struct VFile* vf);
124
125void GBSramClean(struct GB* gb, uint32_t frameCount);
126void GBResizeSram(struct GB* gb, size_t size);
127void GBSavedataMask(struct GB* gb, struct VFile* vf, bool writeback);
128void GBSavedataUnmask(struct GB* gb);
129
130struct Patch;
131void GBApplyPatch(struct GB* gb, struct Patch* patch);
132
133bool GBIsROM(struct VFile* vf);
134void GBGetGameTitle(const struct GB* gba, char* out);
135void GBGetGameCode(const struct GB* gba, char* out);
136
137void GBFrameEnded(struct GB* gb);
138
139#endif