/***************************************************************************** nes.h Nintendo Entertainment System / Famicom ****************************************************************************/ #ifndef NES_H_ #define NES_H_ #include "video/ppu2c0x.h" #include "bus/nes/nes_slot.h" #include "bus/nes/nes_carts.h" #include "sound/nes_apu.h" #include "imagedev/cassette.h" /*************************************************************************** CONSTANTS ***************************************************************************/ #define NTSC_CLOCK N2A03_DEFAULTCLOCK /* 1.789772 MHz */ #define PAL_CLOCK (26601712.0/16) /* 1.662607 MHz */ #define NES_BATTERY_SIZE 0x2000 /*************************************************************************** TYPE DEFINITIONS ***************************************************************************/ struct nes_input { UINT32 shift; UINT32 i0, i1, i2; }; /*PPU fast banking constants and structures */ #define CHRROM 0 #define CHRRAM 1 /*PPU nametable fast banking constants and structures */ #define CIRAM 0 #define ROM 1 #define EXRAM 2 #define MMC5FILL 3 #define CART_NTRAM 4 #define NES_BATTERY 0 #define NES_WRAM 1 class nes_state : public driver_device { public: enum { TIMER_ZAPPER_TICK, TIMER_LIGHTGUN_TICK }; nes_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_ppu(*this, "ppu"), m_sound(*this, "nessound"), m_cartslot(*this, "nes_slot"), m_cassette(*this, "tape") { } /* video-related */ int m_last_frame_flip; /* misc */ ioport_port *m_io_ctrlsel; ioport_port *m_io_fckey[9]; ioport_port *m_io_subkey[13]; ioport_port *m_io_pad[4]; ioport_port *m_io_powerpad[2]; ioport_port *m_io_mahjong[4]; ioport_port *m_io_ftrainer[4]; ioport_port *m_io_cc_left; ioport_port *m_io_cc_right; ioport_port *m_io_zapper1_t; ioport_port *m_io_zapper1_x; ioport_port *m_io_zapper1_y; ioport_port *m_io_zapper2_t; ioport_port *m_io_zapper2_x; ioport_port *m_io_zapper2_y; ioport_port *m_io_paddle; ioport_port *m_io_paddle_btn; ioport_port *m_io_exp; UINT8 *m_vram; UINT8 *m_ciram; //PPU nametable RAM - external to PPU! required_device m_maincpu; required_device m_ppu; required_device m_sound; optional_device m_cartslot; optional_device m_cassette; int nes_ppu_vidaccess(int address, int data); void ppu_nmi(int *ppu_regs); DECLARE_READ8_MEMBER(nes_in0_r); DECLARE_READ8_MEMBER(nes_in1_r); DECLARE_WRITE8_MEMBER(nes_in0_w); DECLARE_WRITE8_MEMBER(nes_in1_w); DECLARE_READ8_MEMBER(fc_in0_r); DECLARE_READ8_MEMBER(fc_in1_r); DECLARE_WRITE8_MEMBER(fc_in0_w); DECLARE_WRITE8_MEMBER(nes_vh_sprite_dma_w); virtual void machine_start(); virtual void machine_reset(); virtual void video_start(); virtual void video_reset(); DECLARE_PALETTE_INIT(nes); UINT32 screen_update_nes(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); DECLARE_READ8_MEMBER(psg_4015_r); DECLARE_WRITE8_MEMBER(psg_4015_w); DECLARE_WRITE8_MEMBER(psg_4017_w); void state_register(); /***** FDS-floppy related *****/ DECLARE_WRITE8_MEMBER(fds_chr_w); DECLARE_READ8_MEMBER(fds_chr_r); DECLARE_WRITE8_MEMBER(fds_nt_w); DECLARE_READ8_MEMBER(fds_nt_r); int m_disk_expansion; UINT8 m_fds_sides; UINT8 *m_fds_data; // here, we store a copy of the disk UINT8 *m_fds_ram; // here, we emulate the RAM adapter /* Variables which can change */ UINT8 m_fds_motor_on; UINT8 m_fds_door_closed; UINT8 m_fds_current_side; UINT32 m_fds_head_position; UINT8 m_fds_status0; UINT8 m_fds_read_mode; UINT8 m_fds_write_reg; int m_fds_mirroring; int m_IRQ_enable, m_IRQ_enable_latch; UINT16 m_IRQ_count, m_IRQ_count_latch; /* these are used in the mapper 20 handlers */ int m_fds_last_side; int m_fds_count; DECLARE_READ8_MEMBER(nes_fds_r); DECLARE_WRITE8_MEMBER(nes_fds_w); DECLARE_DRIVER_INIT(famicom); DECLARE_DEVICE_IMAGE_LOAD_MEMBER(nes_disk); DECLARE_DEVICE_IMAGE_UNLOAD_MEMBER(nes_disk); void fds_irq(int scanline, int vblank, int blanked); // input related UINT32 m_pad_latch[4]; UINT8 m_zapper_latch[2][3]; UINT8 m_paddle_latch, m_paddle_btn_latch; UINT8 m_mjpanel_latch; UINT8 m_fck_scan, m_fck_mode; UINT8 m_mic_obstruct; UINT8 m_powerpad_latch[2]; UINT8 m_ftrainer_scan; protected: virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); private: memory_bank *m_prg_bank_mem[5]; }; #endif /* NES_H_ */