// license:BSD-3-Clause // copyright-holders:Fabio Priuli #ifndef MAME_BUS_NES_SOMARI_H #define MAME_BUS_NES_SOMARI_H #pragma once #include "mmc3.h" // ======================> nes_somari_device class nes_somari_device : public nes_txrom_device { public: // construction/destruction nes_somari_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); virtual void write_l(offs_t offset, u8 data) override { write_m(offset + 0x100, data); } virtual void write_m(offs_t offset, u8 data) override; virtual void write_h(offs_t offset, u8 data) override; virtual void pcb_reset() override; protected: // construction/destruction nes_somari_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, u8 mmc1_prg_shift); // device-level overrides virtual void device_start() override; private: void mmc1_reset_latch(); void mmc1_w(offs_t offset, u8 data); void vrc2_w(offs_t offset, u8 data); void update_prg(); void update_chr(); void update_mirror(); void update_all_banks(); u8 m_board_mode; // MMC1 u8 m_mmc1_count; u8 m_mmc1_latch; u8 m_mmc1_reg[4]; const u8 m_mmc1_prg_shift; // VRC2 u8 m_vrc_prg_bank[2]; u8 m_vrc_vrom_bank[8]; u8 m_vrc_mirror; }; // ======================> nes_huang2_device class nes_huang2_device : public nes_somari_device { public: // construction/destruction nes_huang2_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); }; // device type definition DECLARE_DEVICE_TYPE(NES_SOMARI, nes_somari_device) DECLARE_DEVICE_TYPE(NES_HUANG2, nes_huang2_device) #endif // MAME_BUS_NES_SOMARI_H