/* gameplaySP * * Copyright (C) 2006 Exophase * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef MEMORY_H #define MEMORY_H #include "libretro.h" extern int use_libretro_save_method; #define DMA_CHAN_CNT 4 #define DMA_START_IMMEDIATELY 0 #define DMA_START_VBLANK 1 #define DMA_START_HBLANK 2 #define DMA_START_SPECIAL 3 #define DMA_INACTIVE 4 #define DMA_16BIT 0 #define DMA_32BIT 1 #define DMA_NO_REPEAT 0 #define DMA_REPEAT 1 #define DMA_INCREMENT 0 #define DMA_DECREMENT 1 #define DMA_FIXED 2 #define DMA_RELOAD 3 #define DMA_NO_IRQ 0 #define DMA_TRIGGER_IRQ 1 #define DMA_DIRECT_SOUND_A 0 #define DMA_DIRECT_SOUND_B 1 #define DMA_NO_DIRECT_SOUND 2 // Access to timer registers #define REG_TMXD(n) (REG_TM0D + (2 * (n))) #define REG_TMXCNT(n) (REG_TM0CNT + (2 * (n))) typedef struct { u32 source_address; u32 dest_address; u32 length; u32 repeat_type; u32 direct_sound_channel; u32 source_direction; u32 dest_direction; u32 length_type; u32 start_type; u32 irq; } dma_transfer_type; typedef enum { REG_DISPCNT = 0x00, REG_DISPSTAT = 0x02, REG_VCOUNT = 0x03, REG_BG0CNT = 0x04, REG_BG1CNT = 0x05, REG_BG2CNT = 0x06, REG_BG3CNT = 0x07, REG_BG0HOFS = 0x08, REG_BG0VOFS = 0x09, REG_BG1HOFS = 0x0A, REG_BG1VOFS = 0x0B, REG_BG2HOFS = 0x0C, REG_BG2VOFS = 0x0D, REG_BG3HOFS = 0x0E, REG_BG3VOFS = 0x0F, REG_BG2PA = 0x10, REG_BG2PB = 0x11, REG_BG2PC = 0x12, REG_BG2PD = 0x13, REG_BG2X_L = 0x14, REG_BG2X_H = 0x15, REG_BG2Y_L = 0x16, REG_BG2Y_H = 0x17, REG_BG3PA = 0x18, REG_BG3PB = 0x19, REG_BG3PC = 0x1A, REG_BG3PD = 0x1B, REG_BG3X_L = 0x1C, REG_BG3X_H = 0x1D, REG_BG3Y_L = 0x1E, REG_BG3Y_H = 0x1F, REG_WIN0H = 0x20, REG_WIN1H = 0x21, REG_WIN0V = 0x22, REG_WIN1V = 0x23, REG_WININ = 0x24, REG_WINOUT = 0x25, REG_BLDCNT = 0x28, REG_BLDALPHA = 0x29, REG_BLDY = 0x2A, // Sound control registers REG_SOUND1CNT_L = 0x30, REG_SOUND1CNT_H = 0x31, REG_SOUND1CNT_X = 0x32, REG_SOUND2CNT_L = 0x34, REG_SOUND2CNT_H = 0x36, REG_SOUND3CNT_L = 0x38, REG_SOUND3CNT_H = 0x39, REG_SOUND3CNT_X = 0x3A, REG_SOUND4CNT_L = 0x3C, REG_SOUND4CNT_H = 0x3E, REG_SOUNDCNT_L = 0x40, REG_SOUNDCNT_H = 0x41, REG_SOUNDCNT_X = 0x42, REG_SOUNDWAVE_0 = 0x48, REG_SOUNDWAVE_1 = 0x49, REG_SOUNDWAVE_2 = 0x4A, REG_SOUNDWAVE_3 = 0x4B, REG_SOUNDWAVE_4 = 0x4C, REG_SOUNDWAVE_5 = 0x4D, REG_SOUNDWAVE_6 = 0x4E, REG_SOUNDWAVE_7 = 0x4F, REG_SOUND_FIFOA_L = 0x50, REG_SOUND_FIFOA_H = 0x51, REG_SOUND_FIFOB_L = 0x52, REG_SOUND_FIFOB_H = 0x53, // DMA control REG_DMA0SAD = 0x58, REG_DMA0DAD = 0x5A, REG_DMA0CNT_L = 0x5C, REG_DMA0CNT_H = 0x5D, REG_DMA1SAD = 0x5E, REG_DMA1DAD = 0x60, REG_DMA1CNT_L = 0x62, REG_DMA1CNT_H = 0x63, REG_DMA2SAD = 0x64, REG_DMA2DAD = 0x66, REG_DMA2CNT_L = 0x68, REG_DMA2CNT_H = 0x69, REG_DMA3SAD = 0x6A, REG_DMA3DAD = 0x6C, REG_DMA3CNT_L = 0x6E, REG_DMA3CNT_H = 0x6F, // Timers REG_TM0D = 0x80, REG_TM0CNT = 0x81, REG_TM1D = 0x82, REG_TM1CNT = 0x83, REG_TM2D = 0x84, REG_TM2CNT = 0x85, REG_TM3D = 0x86, REG_TM3CNT = 0x87, REG_P1 = 0x098, REG_P1CNT = 0x099, REG_RCNT = 0x9A, REG_IE = 0x100, REG_IF = 0x101, REG_WAITCNT = 0x102, REG_IME = 0x104, REG_HALTCNT = 0x180 } hardware_register; #define REG_BGxCNT(n) (REG_BG0CNT + (n)) #define FLASH_DEVICE_UNDEFINED 0x00 #define FLASH_DEVICE_MACRONIX_64KB 0x1C #define FLASH_DEVICE_AMTEL_64KB 0x3D #define FLASH_DEVICE_SST_64K 0xD4 #define FLASH_DEVICE_PANASONIC_64KB 0x1B #define FLASH_DEVICE_MACRONIX_128KB 0x09 #define FLASH_MANUFACTURER_MACRONIX 0xC2 #define FLASH_MANUFACTURER_AMTEL 0x1F #define FLASH_MANUFACTURER_PANASONIC 0x32 #define FLASH_MANUFACTURER_SST 0xBF u32 function_cc read_memory8(u32 address); u32 function_cc read_memory8s(u32 address); u32 function_cc read_memory16(u32 address); u16 function_cc read_memory16_signed(u32 address); u32 function_cc read_memory16s(u32 address); u32 function_cc read_memory32(u32 address); cpu_alert_type function_cc write_memory8(u32 address, u8 value); cpu_alert_type function_cc write_memory16(u32 address, u16 value); cpu_alert_type function_cc write_memory32(u32 address, u32 value); u32 function_cc read_eeprom(void); void function_cc write_eeprom(u32 address, u32 value); u8 read_backup(u32 address); void function_cc write_backup(u32 address, u32 value); void function_cc write_rtc(u32 address, u32 value); /* EDIT: Shouldn't this be extern ?! */ extern const u32 def_seq_cycles[16][2]; /* Cycles can change depending on WAITCNT */ extern u8 ws_cyc_seq[16][2]; extern u8 ws_cyc_nseq[16][2]; extern u32 gamepak_size; extern char gamepak_title[13]; extern char gamepak_code[5]; extern char gamepak_maker[3]; extern char gamepak_filename[512]; cpu_alert_type dma_transfer(unsigned dma_chan, int *cycles); u8 *memory_region(u32 address, u32 *memory_limit); u32 load_gamepak(const struct retro_game_info* info, const char *name); u32 load_backup(char *name); s32 load_bios(char *name); void update_backup(void); void init_memory(void); void init_gamepak_buffer(void); bool gamepak_must_swap(void); void memory_term(void); u8 *load_gamepak_page(u32 physical_index); extern u32 oam_update; extern u32 gbc_sound_wave_update; extern dma_transfer_type dma[DMA_CHAN_CNT]; extern u8 open_gba_bios_rom[1024*16]; extern u16 palette_ram[512]; extern u16 oam_ram[512]; extern u16 palette_ram_converted[512]; extern u16 io_registers[512]; extern u8 vram[1024 * 96]; extern u8 bios_rom[1024 * 16]; // Double buffer used for SMC detection extern u8 ewram[1024 * 256 * 2]; extern u8 iwram[1024 * 32 * 2]; extern u8 *memory_map_read[8 * 1024]; extern u32 reg[64]; #define BACKUP_SRAM 0 #define BACKUP_FLASH 1 #define BACKUP_EEPROM 2 #define BACKUP_NONE 3 #define SRAM_SIZE_32KB 1 #define SRAM_SIZE_64KB 2 #define FLASH_SIZE_64KB 1 #define FLASH_SIZE_128KB 2 #define EEPROM_512_BYTE 1 #define EEPROM_8_KBYTE 16 #define EEPROM_BASE_MODE 0 #define EEPROM_READ_MODE 1 #define EEPROM_READ_HEADER_MODE 2 #define EEPROM_ADDRESS_MODE 3 #define EEPROM_WRITE_MODE 4 #define EEPROM_WRITE_ADDRESS_MODE 5 #define EEPROM_ADDRESS_FOOTER_MODE 6 #define EEPROM_WRITE_FOOTER_MODE 7 #define FLASH_BASE_MODE 0 #define FLASH_ERASE_MODE 1 #define FLASH_ID_MODE 2 #define FLASH_WRITE_MODE 3 #define FLASH_BANKSWITCH_MODE 4 extern u32 backup_type; extern u32 sram_bankcount; extern u32 flash_bank_cnt; extern u32 eeprom_size; extern u8 gamepak_backup[1024 * 128]; // Page sticky bit routines extern u32 gamepak_sticky_bit[1024/32]; static inline void touch_gamepak_page(u32 physical_index) { u32 idx = (physical_index >> 5) & 31; u32 bof = physical_index & 31; gamepak_sticky_bit[idx] |= (1 << bof); } static inline void clear_gamepak_stickybits(void) { memset(gamepak_sticky_bit, 0, sizeof(gamepak_sticky_bit)); } unsigned memory_write_savestate(u8 *dst); bool memory_read_savestate(const u8*src); #endif