// license:BSD-3-Clause // copyright-holders:R. Belmont /*************************************************************************** a1bus.h - Apple I expansion slot and card emulation ***************************************************************************/ #pragma once #ifndef __A1BUS_H__ #define __A1BUS_H__ //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_A1BUS_CPU(_cputag) \ a1bus_device::static_set_cputag(*device, _cputag); #define MCFG_A1BUS_OUT_IRQ_CB(_devcb) \ devcb = &a1bus_device::set_out_irq_callback(*device, DEVCB_##_devcb); #define MCFG_A1BUS_OUT_NMI_CB(_devcb) \ devcb = &a1bus_device::set_out_nmi_callback(*device, DEVCB_##_devcb); #define MCFG_A1BUS_SLOT_ADD(_nbtag, _tag, _slot_intf, _def_slot) \ MCFG_DEVICE_ADD(_tag, A1BUS_SLOT, 0) \ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) \ a1bus_slot_device::static_set_a1bus_slot(*device, _nbtag, _tag); #define MCFG_A1BUS_SLOT_REMOVE(_tag) \ MCFG_DEVICE_REMOVE(_tag) #define MCFG_A1BUS_ONBOARD_ADD(_nbtag, _tag, _dev_type, _def_inp) \ MCFG_DEVICE_ADD(_tag, _dev_type, 0) \ MCFG_DEVICE_INPUT_DEFAULTS(_def_inp) \ device_a1bus_card_interface::static_set_a1bus_tag(*device, _nbtag, _tag); //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class a1bus_device; class a1bus_slot_device : public device_t, public device_slot_interface { public: // construction/destruction a1bus_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); a1bus_slot_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, uint32_t clock, const char *shortname, const char *source); // device-level overrides virtual void device_start() override; // inline configuration static void static_set_a1bus_slot(device_t &device, const char *tag, const char *slottag); protected: // configuration const char *m_a1bus_tag, *m_a1bus_slottag; }; // device type definition extern const device_type A1BUS_SLOT; class device_a1bus_card_interface; // ======================> a1bus_device class a1bus_device : public device_t { public: // construction/destruction a1bus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); a1bus_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, uint32_t clock, const char *shortname, const char *source); // inline configuration static void static_set_cputag(device_t &device, const char *tag); template static devcb_base &set_out_irq_callback(device_t &device, _Object object) { return downcast(device).m_out_irq_cb.set_callback(object); } template static devcb_base &set_out_nmi_callback(device_t &device, _Object object) { return downcast(device).m_out_nmi_cb.set_callback(object); } void add_a1bus_card(device_a1bus_card_interface *card); device_a1bus_card_interface *get_a1bus_card(); void set_irq_line(int state); void set_nmi_line(int state); void install_device(offs_t start, offs_t end, read8_delegate rhandler, write8_delegate whandler); void install_bank(offs_t start, offs_t end, const char *tag, uint8_t *data); DECLARE_WRITE_LINE_MEMBER( irq_w ); DECLARE_WRITE_LINE_MEMBER( nmi_w ); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // internal state cpu_device *m_maincpu; devcb_write_line m_out_irq_cb; devcb_write_line m_out_nmi_cb; device_a1bus_card_interface *m_device; const char *m_cputag; }; // device type definition extern const device_type A1BUS; // ======================> device_a1bus_card_interface // class representing interface-specific live a1bus card class device_a1bus_card_interface : public device_slot_card_interface { friend class a1bus_device; public: // construction/destruction device_a1bus_card_interface(const machine_config &mconfig, device_t &device); virtual ~device_a1bus_card_interface(); device_a1bus_card_interface *next() const { return m_next; } void set_a1bus_device(); void raise_slot_irq() { m_a1bus->set_irq_line(ASSERT_LINE); } void lower_slot_irq() { m_a1bus->set_irq_line(CLEAR_LINE); } void raise_slot_nmi() { m_a1bus->set_nmi_line(ASSERT_LINE); } void lower_slot_nmi() { m_a1bus->set_nmi_line(CLEAR_LINE); } void install_device(offs_t start, offs_t end, read8_delegate rhandler, write8_delegate whandler); void install_bank(offs_t start, offs_t end, char *tag, uint8_t *data); // inline configuration static void static_set_a1bus_tag(device_t &device, const char *tag, const char *slottag); public: a1bus_device *m_a1bus; const char *m_a1bus_tag, *m_a1bus_slottag; device_a1bus_card_interface *m_next; }; #endif /* __A1BUS_H__ */