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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
#ifndef __NES_SOMARI_H
#define __NES_SOMARI_H
#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 clock);
// device-level overrides
virtual void device_start() override;
virtual DECLARE_WRITE8_MEMBER(write_l) override { write_m(space, offset + 0x100, data, mem_mask); }
virtual DECLARE_WRITE8_MEMBER(write_m);
virtual DECLARE_WRITE8_MEMBER(mmc1_w);
virtual DECLARE_WRITE8_MEMBER(mmc3_w);
virtual DECLARE_WRITE8_MEMBER(vrc2_w);
virtual DECLARE_WRITE8_MEMBER(write_h);
virtual void pcb_reset() override;
private:
void update_prg();
void update_chr();
void update_mirror();
void bank_update_switchmode();
UINT8 m_board_mode;
// MMC3 - inherited from txrom
UINT8 m_mmc3_mirror_reg;
// MMC1
UINT8 m_count;
UINT8 m_mmc1_latch;
UINT8 m_mmc1_reg[4];
// VRC2
UINT8 m_vrc_prg_bank[2];
UINT8 m_vrc_vrom_bank[8];
UINT8 m_vrc_mirror_reg;
};
// device type definition
extern const device_type NES_SOMARI;
#endif
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