/********************************************************************** Sega Game Gear EXT port emulation Also known as Gear-to-Gear (or VS, in Japan) cable connector Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. ********************************************************************** **********************************************************************/ #pragma once #ifndef __GG_EXT_PORT__ #define __GG_EXT_PORT__ #include "emu.h" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_GG_EXT_PORT_ADD(_tag, _slot_intf, _def_slot) \ MCFG_DEVICE_ADD(_tag, GG_EXT_PORT, 0) \ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) #define MCFG_GG_EXT_PORT_MODIFY(_tag) \ MCFG_DEVICE_MODIFY(_tag) #define MCFG_GG_EXT_PORT_TH_INPUT_HANDLER(_devcb) \ devcb = &gg_ext_port_device::set_th_input_handler(*device, DEVCB_##_devcb); #define MCFG_GG_EXT_PORT_PIXEL_HANDLER(_devcb) \ devcb = &gg_ext_port_device::set_pixel_handler(*device, DEVCB_##_devcb); //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> gg_ext_port_device class device_gg_ext_port_interface; class gg_ext_port_device : public device_t, public device_slot_interface { public: // construction/destruction gg_ext_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual ~gg_ext_port_device(); // static configuration helpers template static devcb_base &set_th_input_handler(device_t &device, _Object object) { return downcast(device).m_th_pin_handler.set_callback(object); } template static devcb_base &set_pixel_handler(device_t &device, _Object object) { return downcast(device).m_pixel_handler.set_callback(object); } // Currently, only the support for SMS Controller Adaptor is emulated, // for when SMS Compatibility mode is enabled. In that mode, the 10 pins // of the EXT port follows the same numbering of a SMS Control port. // Data returned by the port_r methods: // bit 0 - pin 1 - Up // bit 1 - pin 2 - Down // bit 2 - pin 3 - Left // bit 3 - pin 4 - Right // bit 4 - pin 5 - Vcc (no data) // bit 5 - pin 6 - TL (Button 1/Light Phaser Trigger) // bit 6 - pin 7 - TH (Light Phaser sensor) // pin 8 - GND // bit 7 - pin 9 - TR (Button 2) // pin 10 - Not connected // UINT8 port_r(); void port_w( UINT8 data ); void th_pin_w(int state); UINT32 pixel_r(); //protected: // device-level overrides virtual void device_start(); device_gg_ext_port_interface *m_device; private: devcb_write_line m_th_pin_handler; devcb_read32 m_pixel_handler; }; // ======================> device_gg_ext_port_interface // class representing interface-specific live sms_expansion card class device_gg_ext_port_interface : public device_slot_card_interface { public: // construction/destruction device_gg_ext_port_interface(const machine_config &mconfig, device_t &device); virtual ~device_gg_ext_port_interface(); virtual UINT8 peripheral_r() { return 0xff; }; virtual void peripheral_w(UINT8 data) { }; protected: gg_ext_port_device *m_port; }; // device type definition extern const device_type GG_EXT_PORT; SLOT_INTERFACE_EXTERN( gg_ext_port_devices ); #endif