// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** COMX-35 Expansion Slot emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. ********************************************************************** 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 **********************************************************************/ #pragma once #ifndef __COMX35_EXPANSION_SLOT__ #define __COMX35_EXPANSION_SLOT__ #include "emu.h" //************************************************************************** // CONSTANTS //************************************************************************** #define COMX_EXPANSION_BUS_TAG "comxexp" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_COMX_EXPANSION_SLOT_ADD(_tag, _slot_intf, _def_slot) \ MCFG_DEVICE_ADD(_tag, COMX_EXPANSION_SLOT, 0) \ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) #define MCFG_COMX_EXPANSION_SLOT_IRQ_CALLBACK(_write) \ devcb = &comx_expansion_slot_device::set_irq_wr_callback(*device, DEVCB_##_write); //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> 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 comx_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual ~comx_expansion_slot_device() { } template static devcb_base &set_irq_wr_callback(device_t &device, _Object object) { return downcast(device).m_write_irq.set_callback(object); } UINT8 mrd_r(address_space &space, offs_t offset, int *extrom); void mwr_w(address_space &space, offs_t offset, UINT8 data); UINT8 io_r(address_space &space, offs_t offset); void io_w(address_space &space, offs_t offset, UINT8 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); } protected: // device-level overrides virtual void device_start(); 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; public: // construction/destruction device_comx_expansion_card_interface(const machine_config &mconfig, device_t &device); virtual ~device_comx_expansion_card_interface() { } protected: // 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) { }; // memory access virtual UINT8 comx_mrd_r(address_space &space, offs_t offset, int *extrom) { return 0; }; virtual void comx_mwr_w(address_space &space, offs_t offset, UINT8 data) { }; // I/O access virtual UINT8 comx_io_r(address_space &space, offs_t offset) { return 0; }; virtual void comx_io_w(address_space &space, offs_t offset, UINT8 data) { }; comx_expansion_slot_device *m_slot; int m_ds; }; // device type definition extern const device_type COMX_EXPANSION_SLOT; SLOT_INTERFACE_EXTERN( comx_expansion_cards ); #endif