// 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, uint32_t clock); virtual void write_l(offs_t offset, uint8_t data) override { write_m(offset + 0x100, data); } virtual void write_m(offs_t offset, uint8_t data) override; void mmc1_w(offs_t offset, uint8_t data); void mmc3_w(offs_t offset, uint8_t data); void vrc2_w(offs_t offset, uint8_t data); virtual void write_h(offs_t offset, uint8_t data) override; virtual void pcb_reset() override; protected: // device-level overrides virtual void device_start() override; private: void update_prg(); void update_chr(); void update_mirror(); void bank_update_switchmode(); uint8_t m_board_mode; // MMC3 - inherited from txrom uint8_t m_mmc3_mirror_reg; // MMC1 uint8_t m_count; uint8_t m_mmc1_latch; uint8_t m_mmc1_reg[4]; // VRC2 uint8_t m_vrc_prg_bank[2]; uint8_t m_vrc_vrom_bank[8]; uint8_t m_vrc_mirror_reg; }; // device type definition DECLARE_DEVICE_TYPE(NES_SOMARI, nes_somari_device) #endif // MAME_BUS_NES_SOMARI_H