// license:BSD-3-Clause // copyright-holders:Fabio Priuli #ifndef MAME_BUS_NES_MMC5_H #define MAME_BUS_NES_MMC5_H #pragma once #include "nxrom.h" #include "sound/nes_apu.h" // temp hack to pass the additional sound regs to APU... #include "video/ppu2c0x.h" // this has to be included so that IRQ functions can access ppu2c0x_device::BOTTOM_VISIBLE_SCANLINE // ======================> nes_exrom_device class nes_exrom_device : public nes_nrom_device { public: // construction/destruction nes_exrom_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); ~nes_exrom_device(); virtual uint8_t read_l(offs_t offset) override; virtual uint8_t read_m(offs_t offset) override; virtual uint8_t read_h(offs_t offset) override; virtual void write_l(offs_t offset, uint8_t data) override; virtual void write_m(offs_t offset, uint8_t data) override; virtual void write_h(offs_t offset, uint8_t data) override; virtual uint8_t chr_r(offs_t offset) override; virtual uint8_t nt_r(offs_t offset) override; virtual void nt_w(offs_t offset, uint8_t data) override; virtual void hblank_irq(int scanline, int vblank, int blanked) override; virtual void pcb_reset() override; protected: // device-level overrides virtual void device_add_mconfig(machine_config &config) override; virtual void device_start() override; void set_mirror(int page, int src); void update_prg(); inline uint8_t base_chr_r(int bank, uint32_t offset); inline uint8_t split_chr_r(uint32_t offset); inline uint8_t bg_ex1_chr_r(uint32_t offset); inline bool in_split(); uint16_t m_irq_count; uint8_t m_irq_status; int m_irq_enable; int m_mult1, m_mult2; int m_mmc5_scanline; int m_vrom_page_a; int m_vrom_page_b; uint16_t m_vrom_bank[12]; // MMC5 has 10bit wide VROM regs! int m_floodtile; int m_floodattr; int m_prg_mode; // $5100 int m_chr_mode; // $5101 int m_wram_protect_1; // $5102 int m_wram_protect_2; // $5103 int m_exram_control; // $5104 int m_wram_base; // $5113 uint8_t m_last_chr; uint8_t m_ex1_chr; uint8_t m_split_chr; uint8_t m_prg_regs[4]; uint8_t m_prg_ram_mapped[4]; uint8_t m_ex1_bank; uint8_t m_ex1_attrib; uint8_t m_high_chr; // $5130 uint8_t m_split_scr; // $5200 uint8_t m_split_rev; // $5200 uint8_t m_split_ctrl; // $5200 uint8_t m_split_yst; // $5201 uint8_t m_split_bank; // $5202 int m_vcount; // MMC-5 contains 1K of internal ram uint8_t m_exram[0x400]; uint8_t m_ram_hi_banks[4]; // int m_nes_vram_sprite[8]; required_device m_ppu; required_device m_sound; }; // device type definition DECLARE_DEVICE_TYPE(NES_EXROM, nes_exrom_device) #endif // MAME_BUS_NES_MMC5_H