// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** COMX-35 Expansion Slot emulation ********************************************************************** GND 1 A GND NC 2 B DS +5V 3 C V+ D0 4 D D1 D2 5 E D3 D4 6 F D5 D6 7 H D7 _DP 8 J Q _CLEAR 9 K _MRD TPA 10 L N0 N1 11 M N2 _RAS 12 N _INT _WAIT 13 P CLOCK SC1 14 R SC0 _EF4 15 S _CASE TPB 16 T _A15 _MWR 17 U A14 MA7 18 V _A14 MA5 19 W MA6 MA4 20 X MA3 MA2 21 Y _EXTROM MA1 22 Z MA0 **********************************************************************/ #ifndef MAME_BUS_COMX35_EXP_H #define MAME_BUS_COMX35_EXP_H #pragma once #define COMX_EXPANSION_BUS_TAG "comxexp" // ======================> comx_expansion_slot_device class device_comx_expansion_card_interface; class comx_expansion_slot_device : public device_t, public device_slot_interface { public: // construction/destruction template comx_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&opts, const char *dflt) : comx_expansion_slot_device(mconfig, tag, owner, clock) { option_reset(); opts(*this); set_default_option(dflt); set_fixed(false); } comx_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); auto irq_callback() { return m_write_irq.bind(); } uint8_t mrd_r(offs_t offset, int *extrom); void mwr_w(offs_t offset, uint8_t data); uint8_t io_r(offs_t offset); void io_w(offs_t offset, uint8_t data); DECLARE_READ_LINE_MEMBER(ef4_r); DECLARE_WRITE_LINE_MEMBER(ds_w); DECLARE_WRITE_LINE_MEMBER(q_w); DECLARE_WRITE_LINE_MEMBER(irq_w) { m_write_irq(state); } DECLARE_WRITE8_MEMBER(sc_w); DECLARE_WRITE_LINE_MEMBER(tpb_w); protected: // device-level overrides virtual void device_start() override; devcb_write_line m_write_irq; device_comx_expansion_card_interface *m_card; }; // ======================> device_comx_expansion_card_interface // class representing interface-specific live comx_expansion card class device_comx_expansion_card_interface : public device_slot_card_interface { friend class comx_expansion_slot_device; protected: // construction/destruction device_comx_expansion_card_interface(const machine_config &mconfig, device_t &device); // signals virtual int comx_ef4_r() { return CLEAR_LINE; } virtual void comx_ds_w(int state) { m_ds = state; } virtual void comx_q_w(int state) { } virtual void comx_sc_w(int n, int sc) { } virtual void comx_tpb_w(int state) { } // memory access virtual uint8_t comx_mrd_r(offs_t offset, int *extrom) { return 0; } virtual void comx_mwr_w(offs_t offset, uint8_t data) { } // I/O access virtual uint8_t comx_io_r(offs_t offset) { return 0; } virtual void comx_io_w(offs_t offset, uint8_t data) { } comx_expansion_slot_device *m_slot; int m_ds; }; DECLARE_DEVICE_TYPE(COMX_EXPANSION_SLOT, comx_expansion_slot_device) void comx_expansion_cards(device_slot_interface &device); #endif // MAME_BUS_COMX35_EXP_H