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Diffstat (limited to 'src/devices/bus/sms_exp/smsexp.h')
-rw-r--r-- | src/devices/bus/sms_exp/smsexp.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/devices/bus/sms_exp/smsexp.h b/src/devices/bus/sms_exp/smsexp.h new file mode 100644 index 00000000000..58d1a33228d --- /dev/null +++ b/src/devices/bus/sms_exp/smsexp.h @@ -0,0 +1,95 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +/********************************************************************** + + Sega Master System expansion slot emulation + +********************************************************************** + + +**********************************************************************/ + +#pragma once + +#ifndef __SMS_EXPANSION_SLOT__ +#define __SMS_EXPANSION_SLOT__ + +#include "emu.h" + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_SMS_EXPANSION_ADD(_tag, _slot_intf, _def_slot) \ + MCFG_DEVICE_ADD(_tag, SMS_EXPANSION_SLOT, 0) \ + MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> sms_expansion_slot_device + +class device_sms_expansion_slot_interface; + +class sms_expansion_slot_device : public device_t, + public device_slot_interface +{ +public: + // construction/destruction + sms_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + virtual ~sms_expansion_slot_device(); + + // reading and writing + DECLARE_READ8_MEMBER(read); + DECLARE_WRITE8_MEMBER(write); + DECLARE_WRITE8_MEMBER(write_mapper); + DECLARE_READ8_MEMBER(read_ram); + DECLARE_WRITE8_MEMBER(write_ram); + + int get_lphaser_xoffs(); + + device_sms_expansion_slot_interface *m_device; + +protected: + // device-level overrides + virtual void device_start(); +}; + + +// ======================> device_sms_expansion_slot_interface + +// class representing interface-specific live sms_expansion card +class device_sms_expansion_slot_interface : public device_slot_card_interface +{ +public: + // construction/destruction + device_sms_expansion_slot_interface(const machine_config &mconfig, device_t &device); + virtual ~device_sms_expansion_slot_interface(); + + // reading and writing + virtual DECLARE_READ8_MEMBER(read) { return 0xff; }; + virtual DECLARE_WRITE8_MEMBER(write) { }; + virtual DECLARE_WRITE8_MEMBER(write_mapper) {}; + virtual DECLARE_READ8_MEMBER(read_ram) { return 0xff; }; + virtual DECLARE_WRITE8_MEMBER(write_ram) { }; + + virtual int get_lphaser_xoffs() { return 0; }; +}; + + +// device type definition +extern const device_type SMS_EXPANSION_SLOT; + + +// slot devices +#include "gender.h" + +SLOT_INTERFACE_EXTERN( sms_expansion_devices ); + + +#endif |