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Diffstat (limited to 'src/devices/bus/a1bus/a1bus.h')
-rw-r--r-- | src/devices/bus/a1bus/a1bus.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/devices/bus/a1bus/a1bus.h b/src/devices/bus/a1bus/a1bus.h new file mode 100644 index 00000000000..ecdb440f948 --- /dev/null +++ b/src/devices/bus/a1bus/a1bus.h @@ -0,0 +1,145 @@ +// 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__ + +#include "emu.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 clock); + a1bus_slot_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + + // device-level overrides + virtual void device_start(); + + // 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 clock); + a1bus_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + + // inline configuration + static void static_set_cputag(device_t &device, const char *tag); + template<class _Object> static devcb_base &set_out_irq_callback(device_t &device, _Object object) { return downcast<a1bus_device &>(device).m_out_irq_cb.set_callback(object); } + template<class _Object> static devcb_base &set_out_nmi_callback(device_t &device, _Object object) { return downcast<a1bus_device &>(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, offs_t mask, offs_t mirror, const char *tag, UINT8 *data); + + DECLARE_WRITE_LINE_MEMBER( irq_w ); + DECLARE_WRITE_LINE_MEMBER( nmi_w ); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + + // 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, offs_t mask, offs_t mirror, char *tag, UINT8 *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__ */ |