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-rw-r--r--src/devices/bus/comx35/exp.h145
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diff --git a/src/devices/bus/comx35/exp.h b/src/devices/bus/comx35/exp.h
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+// 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
+
+**********************************************************************/
+
+#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<class _Object> static devcb_base &set_irq_wr_callback(device_t &device, _Object object) { return downcast<comx_expansion_slot_device &>(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