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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Sinclair QL ROM cartridge port emulation
**********************************************************************
A B
* 1 * VDD
A12 * 2 * A14
A7 * 3 * A13
A6 * 4 * A8
A5 * 5 * A9
SLOT 6 SLOT
A4 * 7 * A11
A3 * 8 * ROMOEH
A2 * 9 * A10
A1 * 10 * A15
A0 * 11 * D7
D0 * 12 * D6
D1 * 13 * D5
D2 * 14 * D4
GND * 15 * D3
**********************************************************************/
#pragma once
#ifndef __QL_ROM_CARTRIDGE_SLOT__
#define __QL_ROM_CARTRIDGE_SLOT__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_QL_ROM_CARTRIDGE_SLOT_ADD(_tag, _slot_intf, _def_slot) \
MCFG_DEVICE_ADD(_tag, QL_ROM_CARTRIDGE_SLOT, 0) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> device_ql_rom_cartridge_card_interface
class ql_rom_cartridge_slot_t;
class device_ql_rom_cartridge_card_interface : public device_slot_card_interface
{
friend class ql_rom_cartridge_slot_t;
public:
// construction/destruction
device_ql_rom_cartridge_card_interface(const machine_config &mconfig, device_t &device);
virtual ~device_ql_rom_cartridge_card_interface();
virtual void romoeh_w(int state) { m_romoeh = state; }
virtual UINT8 read(address_space &space, offs_t offset, UINT8 data) { return data; }
virtual void write(address_space &space, offs_t offset, UINT8 data) { }
protected:
ql_rom_cartridge_slot_t *m_slot;
optional_shared_ptr<UINT8> m_rom;
int m_romoeh;
};
// ======================> ql_rom_cartridge_slot_t
class ql_rom_cartridge_slot_t : public device_t,
public device_slot_interface,
public device_image_interface
{
public:
// construction/destruction
ql_rom_cartridge_slot_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// computer interface
UINT8 read(address_space &space, offs_t offset, UINT8 data) { if (m_card) data = m_card->read(space, offset, data); return data; }
void write(address_space &space, offs_t offset, UINT8 data) { if (m_card) m_card->write(space, offset, data); }
DECLARE_WRITE_LINE_MEMBER( romoeh_w ) { if (m_card) m_card->romoeh_w(state); }
protected:
// device-level overrides
virtual void device_config_complete() override { update_names(); }
virtual void device_start() override;
// image-level overrides
virtual bool call_load() override;
virtual bool call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry) override;
virtual iodevice_t image_type() const override { return IO_CARTSLOT; }
virtual bool is_readable() const override { return 1; }
virtual bool is_writeable() const override { return 0; }
virtual bool is_creatable() const override { return 0; }
virtual bool must_be_loaded() const override { return 0; }
virtual bool is_reset_on_load() const override { return 1; }
virtual const char *image_interface() const override { return "ql_cart"; }
virtual const char *file_extensions() const override { return "rom,bin"; }
virtual const option_guide *create_option_guide() const override { return nullptr; }
// slot interface overrides
virtual std::string get_default_card_software() override;
device_ql_rom_cartridge_card_interface *m_card;
};
// device type definition
extern const device_type QL_ROM_CARTRIDGE_SLOT;
SLOT_INTERFACE_EXTERN( ql_rom_cartridge_cards );
#endif
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