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// license:BSD-3-Clause
// copyright-holders:Kaz, Fabio Priuli
#ifndef MAME_BUS_NES_SUBOR_H
#define MAME_BUS_NES_SUBOR_H
#pragma once
#include "nxrom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> nes_subor0_device
class nes_subor0_device :
public nes_nrom_device
{
public:
// construction/destruction
nes_subor0_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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:
uint8_t m_reg[4];
};
// ======================> nes_subor1_device
class nes_subor1_device :
public nes_nrom_device
{
public:
// construction/destruction
nes_subor1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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:
uint8_t m_reg[4];
};
// ======================> nes_subor2_device
class nes_subor2_device :
public nes_nrom_device
{
public:
// construction/destruction
nes_subor2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual uint8_t nt_r(offs_t offset) override;
virtual void write_l(offs_t offset, uint8_t data) override;
virtual uint8_t read_l(offs_t offset) override;
virtual void ppu_latch(offs_t offset) override;
virtual void pcb_reset() override;
protected:
// device-level overrides
virtual void device_start() override;
private:
void update_banks();
uint8_t m_switch_reg, m_bank_reg, m_chr_banking, m_page;
};
// device type definition
DECLARE_DEVICE_TYPE(NES_SUBOR0, nes_subor0_device)
DECLARE_DEVICE_TYPE(NES_SUBOR1, nes_subor1_device)
DECLARE_DEVICE_TYPE(NES_SUBOR2, nes_subor2_device)
#endif // MAME_BUS_NES_SUBOR_H
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