// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** 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() \ MCFG_DEVICE_ADD(IEEE488_TAG, IEEE488, 0) #define MCFG_IEEE488_EOI_CALLBACK(_write) \ downcast(device)->set_eoi_callback(DEVCB_##_write); #define MCFG_IEEE488_DAV_CALLBACK(_write) \ downcast(device)->set_dav_callback(DEVCB_##_write); #define MCFG_IEEE488_NRFD_CALLBACK(_write) \ downcast(device)->set_nrfd_callback(DEVCB_##_write); #define MCFG_IEEE488_NDAC_CALLBACK(_write) \ downcast(device)->set_ndac_callback(DEVCB_##_write); #define MCFG_IEEE488_IFC_CALLBACK(_write) \ downcast(device)->set_ifc_callback(DEVCB_##_write); #define MCFG_IEEE488_SRQ_CALLBACK(_write) \ downcast(device)->set_srq_callback(DEVCB_##_write); #define MCFG_IEEE488_ATN_CALLBACK(_write) \ downcast(device)->set_atn_callback(DEVCB_##_write); #define MCFG_IEEE488_REN_CALLBACK(_write) \ downcast(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(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 void set_eoi_callback(_write wr) { m_write_eoi.set_callback(wr); } template void set_dav_callback(_write wr) { m_write_dav.set_callback(wr); } template void set_nrfd_callback(_write wr) { m_write_nrfd.set_callback(wr); } template void set_ndac_callback(_write wr) { m_write_ndac.set_callback(wr); } template void set_ifc_callback(_write wr) { m_write_ifc.set_callback(wr); } template void set_srq_callback(_write wr) { m_write_srq.set_callback(wr); } template void set_atn_callback(_write wr) { m_write_atn.set_callback(wr); } template 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 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