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+/**********************************************************************
+
+ IEEE-488.1 General Purpose Interface Bus emulation
+ (aka HP-IB, GPIB, CBM IEEE)
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __IEEE488__
+#define __IEEE488__
+
+#include "emu.h"
+
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+#define IEEE488_TAG "ieee_bus"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_IEEE488_BUS_ADD(_config) \
+ MCFG_DEVICE_ADD(IEEE488_TAG, IEEE488, 0) \
+ MCFG_DEVICE_CONFIG(_config)
+
+
+#define IEEE488_INTERFACE(_name) \
+ const ieee488_interface (_name) =
+
+
+#define MCFG_IEEE488_SLOT_ADD(_tag, _num, _slot_intf, _def_slot, _def_inp) \
+ MCFG_DEVICE_ADD(_tag, IEEE488_SLOT, 0) \
+ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false) \
+ ieee488_slot_device::static_set_slot(*device, _num);
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> ieee488_interface
+
+struct ieee488_interface
+{
+ devcb_write_line m_out_eoi_cb;
+ devcb_write_line m_out_dav_cb;
+ devcb_write_line m_out_nrfd_cb;
+ devcb_write_line m_out_ndac_cb;
+ devcb_write_line m_out_ifc_cb;
+ devcb_write_line m_out_srq_cb;
+ devcb_write_line m_out_atn_cb;
+ devcb_write_line m_out_ren_cb;
+};
+
+
+// ======================> ieee488_device
+
+class device_ieee488_interface;
+
+class ieee488_device : public device_t,
+ public ieee488_interface
+{
+public:
+ // construction/destruction
+ ieee488_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ void add_device(device_t *target, int address);
+
+ // reads for both host and peripherals
+ UINT8 dio_r();
+ READ8_MEMBER( dio_r );
+ DECLARE_READ_LINE_MEMBER( eoi_r );
+ DECLARE_READ_LINE_MEMBER( dav_r );
+ DECLARE_READ_LINE_MEMBER( nrfd_r );
+ DECLARE_READ_LINE_MEMBER( ndac_r );
+ DECLARE_READ_LINE_MEMBER( ifc_r );
+ DECLARE_READ_LINE_MEMBER( srq_r );
+ DECLARE_READ_LINE_MEMBER( atn_r );
+ DECLARE_READ_LINE_MEMBER( ren_r );
+
+ // writes for host (driver_device)
+ void dio_w(UINT8 data);
+ WRITE8_MEMBER( dio_w );
+ DECLARE_WRITE_LINE_MEMBER( eoi_w );
+ DECLARE_WRITE_LINE_MEMBER( dav_w );
+ DECLARE_WRITE_LINE_MEMBER( nrfd_w );
+ DECLARE_WRITE_LINE_MEMBER( ndac_w );
+ DECLARE_WRITE_LINE_MEMBER( ifc_w );
+ DECLARE_WRITE_LINE_MEMBER( srq_w );
+ DECLARE_WRITE_LINE_MEMBER( atn_w );
+ DECLARE_WRITE_LINE_MEMBER( ren_w );
+
+ // writes for peripherals (device_t)
+ void dio_w(device_t *device, UINT8 data);
+ void eoi_w(device_t *device, int state);
+ void dav_w(device_t *device, int state);
+ void nrfd_w(device_t *device, int state);
+ void ndac_w(device_t *device, int state);
+ void ifc_w(device_t *device, int state);
+ void srq_w(device_t *device, int state);
+ void atn_w(device_t *device, int state);
+ void ren_w(device_t *device, int state);
+
+protected:
+ enum
+ {
+ EOI = 0,
+ DAV,
+ NRFD,
+ NDAC,
+ IFC,
+ SRQ,
+ ATN,
+ REN,
+ SIGNAL_COUNT
+ };
+
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_config_complete();
+ virtual void device_stop();
+
+ class daisy_entry
+ {
+ public:
+ daisy_entry(device_t *device);
+ daisy_entry *next() const { return m_next; }
+
+ daisy_entry * m_next; // next device
+ device_t * m_device; // associated device
+ device_ieee488_interface * m_interface; // associated device's daisy interface
+
+ int m_line[SIGNAL_COUNT];
+ UINT8 m_dio;
+ };
+
+ simple_list<daisy_entry> m_device_list;
+
+private:
+ devcb_resolved_write_line m_out_eoi_func;
+ devcb_resolved_write_line m_out_dav_func;
+ devcb_resolved_write_line m_out_nrfd_func;
+ devcb_resolved_write_line m_out_ndac_func;
+ devcb_resolved_write_line m_out_ifc_func;
+ devcb_resolved_write_line m_out_srq_func;
+ devcb_resolved_write_line m_out_atn_func;
+ devcb_resolved_write_line m_out_ren_func;
+
+ inline void set_signal(device_t *device, int signal, int state);
+ inline int get_signal(int signal);
+ inline void set_data(device_t *device, UINT8 data);
+ inline UINT8 get_data();
+
+ int m_line[SIGNAL_COUNT];
+ UINT8 m_dio;
+};
+
+
+// ======================> ieee488_slot_device
+
+class ieee488_slot_device : public device_t,
+ public device_slot_interface
+{
+public:
+ // construction/destruction
+ ieee488_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // device-level overrides
+ virtual void device_start();
+
+ // inline configuration
+ static void static_set_slot(device_t &device, int address);
+
+private:
+ // configuration
+ int m_address;
+};
+
+
+// ======================> device_ieee488_interface
+
+class device_ieee488_interface : public device_slot_card_interface
+{
+ friend class ieee488_device;
+
+public:
+ // construction/destruction
+ device_ieee488_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_ieee488_interface();
+
+ device_ieee488_interface *next() const { return m_next; }
+ device_ieee488_interface *m_next;
+
+ // optional operation overrides
+ virtual void ieee488_eoi(int state) { };
+ virtual void ieee488_dav(int state) { };
+ virtual void ieee488_nrfd(int state) { };
+ virtual void ieee488_ndac(int state) { };
+ virtual void ieee488_ifc(int state) { };
+ virtual void ieee488_srq(int state) { };
+ virtual void ieee488_atn(int state) { };
+ virtual void ieee488_ren(int state) { };
+
+ ieee488_device *m_bus;
+ int m_address;
+};
+
+
+// device type definition
+extern const device_type IEEE488;
+extern const device_type IEEE488_SLOT;
+
+
+
+#endif