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/**********************************************************************
Commodore Plus/4 User Port emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
GND 1 A GND
+5V 2 B P0
_BRESET 3 C RxD
P2 4 D RTS
P3 5 E DTR
P4 6 F P7
P5 7 H DCD
P0 8 J P6
ATN 9 K P1
+9VAC 10 L DSR
+9VAC 11 M TxD
GND 12 N GND
**********************************************************************/
#pragma once
#ifndef __PLUS4_USER_PORT__
#define __PLUS4_USER_PORT__
#include "emu.h"
//**************************************************************************
// CONSTANTS
//**************************************************************************
#define PLUS4_USER_PORT_TAG "user"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_PLUS4_USER_PORT_ADD(_tag, _slot_intf, _def_slot) \
MCFG_DEVICE_ADD(_tag, PLUS4_USER_PORT, 0) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> plus4_user_port_device
class device_plus4_user_port_interface;
class plus4_user_port_device : public device_t,
public device_slot_interface
{
public:
// construction/destruction
plus4_user_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// computer interface
DECLARE_READ8_MEMBER( p_r );
DECLARE_WRITE8_MEMBER( p_w );
DECLARE_READ_LINE_MEMBER( rxd_r );
DECLARE_READ_LINE_MEMBER( dcd_r );
DECLARE_READ_LINE_MEMBER( dsr_r );
DECLARE_WRITE_LINE_MEMBER( txd_w );
DECLARE_WRITE_LINE_MEMBER( dtr_w );
DECLARE_WRITE_LINE_MEMBER( rts_w );
DECLARE_WRITE_LINE_MEMBER( rxc_w );
DECLARE_WRITE_LINE_MEMBER( atn_w );
protected:
// device-level overrides
virtual void device_config_complete() { };
virtual void device_start();
virtual void device_reset();
device_plus4_user_port_interface *m_cart;
};
// ======================> device_plus4_user_port_interface
// class representing interface-specific live plus4_expansion card
class device_plus4_user_port_interface : public device_slot_card_interface
{
public:
// construction/destruction
device_plus4_user_port_interface(const machine_config &mconfig, device_t &device);
virtual ~device_plus4_user_port_interface();
virtual UINT8 plus4_p_r() { return 0xff; };
virtual void plus4_p_w(UINT8 data) { };
virtual int plus4_rxd_r() { return 1; };
virtual int plus4_dcd_r() { return 0; };
virtual int plus4_dsr_r() { return 0; };
virtual void plus4_txd_w(int state) { };
virtual void plus4_dtr_w(int state) { };
virtual void plus4_rts_w(int state) { };
virtual void plus4_rxc_w(int state) { };
virtual void plus4_atn_w(int state) { };
protected:
plus4_user_port_device *m_slot;
};
// device type definition
extern const device_type PLUS4_USER_PORT;
#endif
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