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Diffstat (limited to 'src/devices/bus/mtx/exp.h')
-rw-r--r-- | src/devices/bus/mtx/exp.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/devices/bus/mtx/exp.h b/src/devices/bus/mtx/exp.h new file mode 100644 index 00000000000..d4e05f2f9c9 --- /dev/null +++ b/src/devices/bus/mtx/exp.h @@ -0,0 +1,93 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + MTX expansion emulation + +**********************************************************************/ + + +#ifndef MAME_BUS_MTX_EXP_H +#define MAME_BUS_MTX_EXP_H + +#pragma once + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> mtx_exp_slot_device + +class device_mtx_exp_interface; + +class mtx_exp_slot_device : public device_t, public device_slot_interface +{ +public: + // construction/destruction + template <typename T> + mtx_exp_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&slot_options, const char *default_option) + : mtx_exp_slot_device(mconfig, tag, owner) + { + option_reset(); + slot_options(*this); + set_default_option(default_option); + set_fixed(false); + } + + mtx_exp_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, uint32_t clock = 0); + + template <typename T> void set_program_space(T &&tag, int spacenum) { m_program.set_tag(std::forward<T>(tag), spacenum); } + template <typename T> void set_io_space(T &&tag, int spacenum) { m_io.set_tag(std::forward<T>(tag), spacenum); } + + // callbacks + auto busreq_handler() { return m_busreq_handler.bind(); } + auto int_handler() { return m_int_handler.bind(); } + auto nmi_handler() { return m_nmi_handler.bind(); } + + DECLARE_WRITE_LINE_MEMBER( busreq_w ) { m_busreq_handler(state); } + DECLARE_WRITE_LINE_MEMBER( int_w ) { m_int_handler(state); } + DECLARE_WRITE_LINE_MEMBER( nmi_w ) { m_nmi_handler(state); } + + // address spaces we are attached to + required_address_space m_program; + required_address_space m_io; + +protected: + // device-level overrides + virtual void device_validity_check(validity_checker &valid) const override; + virtual void device_start() override; + virtual void device_reset() override; + + device_mtx_exp_interface *m_card; + +private: + devcb_write_line m_busreq_handler; + devcb_write_line m_int_handler; + devcb_write_line m_nmi_handler; +}; + + +// ======================> device_mtx_exp_interface + +class device_mtx_exp_interface : public device_slot_card_interface +{ +public: + // construction/destruction + device_mtx_exp_interface(const machine_config &mconfig, device_t &device); + +protected: + address_space &program_space() { return *m_slot->m_program; } + address_space &io_space() { return *m_slot->m_io; } + + mtx_exp_slot_device *m_slot; +}; + + +// device type definition +DECLARE_DEVICE_TYPE(MTX_EXP_SLOT, mtx_exp_slot_device) + +void mtx_expansion_devices(device_slot_interface &device); + + +#endif // MAME_BUS_MTX_EXP_H |