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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Commodore SuperPET emulation
**********************************************************************/
#ifndef MAME_BUS_PET_SUPERPET_H
#define MAME_BUS_PET_SUPERPET_H
#pragma once
#include "exp.h"
#include "machine/mos6551.h"
#include "machine/mos6702.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> superpet_device
class superpet_device : public device_t,
public device_pet_expansion_card_interface
{
public:
// construction/destruction
superpet_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
// device_pet_expansion_card_interface overrides
virtual int pet_norom_r(offs_t offset, int sel) override;
virtual uint8_t pet_bd_r(offs_t offset, uint8_t data, int &sel) override;
virtual void pet_bd_w(offs_t offset, uint8_t data, int &sel) override;
virtual int pet_diag_r() override;
virtual void pet_irq_w(int state) override;
private:
void acia_irq_w(int state);
uint8_t read(offs_t offset);
void write(offs_t offset, uint8_t data);
void superpet_mem(address_map &map) ATTR_COLD;
required_device<cpu_device> m_maincpu;
required_device<mos6551_device> m_acia;
required_device<mos6702_device> m_dongle;
required_memory_region m_rom;
memory_share_creator<uint8_t> m_ram;
required_ioport m_io_sw1;
required_ioport m_io_sw2;
inline void update_cpu();
inline bool is_ram_writable();
uint8_t m_system;
uint8_t m_bank;
uint8_t m_sw1;
uint8_t m_sw2;
int m_sel9_rom;
int m_pet_irq;
int m_acia_irq;
};
// device type definition
DECLARE_DEVICE_TYPE(SUPERPET, superpet_device)
#endif // MAME_BUS_PET_SUPERPET_H
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