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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
IEEE-488.1 General Purpose Interface Bus emulation
(aka HP-IB, GPIB, CBM IEEE)
**********************************************************************/
#pragma once
#ifndef __IEEE488__
#define __IEEE488__
#include "emu.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define IEEE488_TAG "ieee_bus"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_IEEE488_BUS_ADD() \
MCFG_DEVICE_ADD(IEEE488_TAG, IEEE488, 0)
#define MCFG_IEEE488_EOI_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_eoi_callback(DEVCB_##_write);
#define MCFG_IEEE488_DAV_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_dav_callback(DEVCB_##_write);
#define MCFG_IEEE488_NRFD_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_nrfd_callback(DEVCB_##_write);
#define MCFG_IEEE488_NDAC_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_ndac_callback(DEVCB_##_write);
#define MCFG_IEEE488_IFC_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_ifc_callback(DEVCB_##_write);
#define MCFG_IEEE488_SRQ_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_srq_callback(DEVCB_##_write);
#define MCFG_IEEE488_ATN_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_atn_callback(DEVCB_##_write);
#define MCFG_IEEE488_REN_CALLBACK(_write) \
downcast<ieee488_device *>(device)->set_ren_callback(DEVCB_##_write);
#define MCFG_IEEE488_SLOT_ADD(_tag, _address, _slot_intf, _def_slot) \
MCFG_DEVICE_ADD(_tag, IEEE488_SLOT, 0) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) \
downcast<ieee488_slot_device *>(device)->set_address(_address);
#define MCFG_CBM_IEEE488_ADD(_default_drive) \
MCFG_IEEE488_SLOT_ADD("ieee4", 4, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee8", 8, cbm_ieee488_devices, _default_drive) \
MCFG_IEEE488_SLOT_ADD("ieee9", 9, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee10", 10, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee11", 11, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee12", 12, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee13", 13, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee14", 14, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_SLOT_ADD("ieee15", 15, cbm_ieee488_devices, NULL) \
MCFG_IEEE488_BUS_ADD()
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> ieee488_device
class ieee488_slot_device;
class device_ieee488_interface;
class ieee488_device : public device_t
{
public:
// construction/destruction
ieee488_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
template<class _write> void set_eoi_callback(_write wr) { m_write_eoi.set_callback(wr); }
template<class _write> void set_dav_callback(_write wr) { m_write_dav.set_callback(wr); }
template<class _write> void set_nrfd_callback(_write wr) { m_write_nrfd.set_callback(wr); }
template<class _write> void set_ndac_callback(_write wr) { m_write_ndac.set_callback(wr); }
template<class _write> void set_ifc_callback(_write wr) { m_write_ifc.set_callback(wr); }
template<class _write> void set_srq_callback(_write wr) { m_write_srq.set_callback(wr); }
template<class _write> void set_atn_callback(_write wr) { m_write_atn.set_callback(wr); }
template<class _write> void set_ren_callback(_write wr) { m_write_ren.set_callback(wr); }
void add_device(ieee488_slot_device *slot, device_t *target);
// reads for both host and peripherals
UINT8 dio_r() { return get_data(); }
DECLARE_READ8_MEMBER( dio_r ) { return get_data(); }
DECLARE_READ_LINE_MEMBER( eoi_r ) { return get_signal(EOI); }
DECLARE_READ_LINE_MEMBER( dav_r ) { return get_signal(DAV); }
DECLARE_READ_LINE_MEMBER( nrfd_r ) { return get_signal(NRFD); }
DECLARE_READ_LINE_MEMBER( ndac_r ) { return get_signal(NDAC); }
DECLARE_READ_LINE_MEMBER( ifc_r ) { return get_signal(IFC); }
DECLARE_READ_LINE_MEMBER( srq_r ) { return get_signal(SRQ); }
DECLARE_READ_LINE_MEMBER( atn_r ) { return get_signal(ATN); }
DECLARE_READ_LINE_MEMBER( ren_r ) { return get_signal(REN); }
// writes for host (driver_device)
void dio_w(UINT8 data) { return set_data(this, data); }
DECLARE_WRITE8_MEMBER( dio_w ) { set_data(this, data); }
DECLARE_WRITE_LINE_MEMBER( eoi_w ) { set_signal(this, EOI, state); }
DECLARE_WRITE_LINE_MEMBER( dav_w ) { set_signal(this, DAV, state); }
DECLARE_WRITE_LINE_MEMBER( nrfd_w ) { set_signal(this, NRFD, state); }
DECLARE_WRITE_LINE_MEMBER( ndac_w ) { set_signal(this, NDAC, state); }
DECLARE_WRITE_LINE_MEMBER( ifc_w ) { set_signal(this, IFC, state); }
DECLARE_WRITE_LINE_MEMBER( srq_w ) { set_signal(this, SRQ, state); }
DECLARE_WRITE_LINE_MEMBER( atn_w ) { set_signal(this, ATN, state); }
DECLARE_WRITE_LINE_MEMBER( ren_w ) { set_signal(this, REN, state); }
// writes for peripherals (device_t)
void dio_w(device_t *device, UINT8 data) { set_data(device, data); }
void eoi_w(device_t *device, int state) { set_signal(device, EOI, state); }
void dav_w(device_t *device, int state) { set_signal(device, DAV, state); }
void nrfd_w(device_t *device, int state) { set_signal(device, NRFD, state); }
void ndac_w(device_t *device, int state) { set_signal(device, NDAC, state); }
void ifc_w(device_t *device, int state) { set_signal(device, IFC, state); }
void srq_w(device_t *device, int state) { set_signal(device, SRQ, state); }
void atn_w(device_t *device, int state) { set_signal(device, ATN, state); }
void ren_w(device_t *device, int state) { set_signal(device, REN, state); }
protected:
enum
{
EOI = 0,
DAV,
NRFD,
NDAC,
IFC,
SRQ,
ATN,
REN,
SIGNAL_COUNT
};
// device-level overrides
virtual void device_start();
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_write_line m_write_eoi;
devcb_write_line m_write_dav;
devcb_write_line m_write_nrfd;
devcb_write_line m_write_ndac;
devcb_write_line m_write_ifc;
devcb_write_line m_write_srq;
devcb_write_line m_write_atn;
devcb_write_line m_write_ren;
void set_signal(device_t *device, int signal, int state);
int get_signal(int signal);
void set_data(device_t *device, UINT8 data);
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);
void set_address(int address) { m_address = address; }
int get_address() { return m_address; }
// device-level overrides
virtual void device_start();
protected:
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;
ieee488_slot_device *m_slot;
};
// device type definition
extern const device_type IEEE488;
extern const device_type IEEE488_SLOT;
SLOT_INTERFACE_EXTERN( cbm_ieee488_devices );
#endif
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