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-rw-r--r--src/devices/bus/cbm2/user.h157
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diff --git a/src/devices/bus/cbm2/user.h b/src/devices/bus/cbm2/user.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Commodore CBM-II User Port emulation
+
+**********************************************************************
+
+ GND 1 14 2D0
+ PB2 2 15 1D7
+ GND 3 16 1D6
+ PB3 4 17 1D5
+ PC 5 18 1D4
+ FLAG 6 19 1D3
+ 2D7 7 20 1D2
+ 2D6 8 21 1D1
+ 2D5 9 22 1D0
+ 2D4 10 23 CNT
+ 2D3 11 24 +5V
+ 2D2 12 25 IRQ
+ 2D1 13 26 SP
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __CBM2_USER_PORT__
+#define __CBM2_USER_PORT__
+
+#include "emu.h"
+
+
+
+//**************************************************************************
+// CONSTANTS
+//**************************************************************************
+
+#define CBM2_USER_PORT_TAG "user"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_CBM2_USER_PORT_ADD(_tag, _slot_intf, _def_slot) \
+ MCFG_DEVICE_ADD(_tag, CBM2_USER_PORT, 0) \
+ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
+
+
+#define MCFG_CBM2_USER_PORT_IRQ_CALLBACK(_write) \
+ devcb = &cbm2_user_port_device::set_irq_wr_callback(*device, DEVCB_##_write);
+
+#define MCFG_CBM2_USER_PORT_SP_CALLBACK(_write) \
+ devcb = &cbm2_user_port_device::set_sp_wr_callback(*device, DEVCB_##_write);
+
+#define MCFG_CBM2_USER_PORT_CNT_CALLBACK(_write) \
+ devcb = &cbm2_user_port_device::set_cnt_wr_callback(*device, DEVCB_##_write);
+
+#define MCFG_CBM2_USER_PORT_FLAG_CALLBACK(_write) \
+ devcb = &cbm2_user_port_device::set_flag_wr_callback(*device, DEVCB_##_write);
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class cbm2_user_port_device;
+
+// ======================> device_cbm2_user_port_interface
+
+// class representing interface-specific live cbm2_expansion card
+class device_cbm2_user_port_interface : public device_slot_card_interface
+{
+public:
+ // construction/destruction
+ device_cbm2_user_port_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_cbm2_user_port_interface() { }
+
+ virtual UINT8 cbm2_d1_r(address_space &space, offs_t offset) { return 0xff; };
+ virtual void cbm2_d1_w(address_space &space, offs_t offset, UINT8 data) { };
+
+ virtual UINT8 cbm2_d2_r(address_space &space, offs_t offset) { return 0xff; };
+ virtual void cbm2_d2_w(address_space &space, offs_t offset, UINT8 data) { };
+
+ virtual int cbm2_pb2_r() { return 1; }
+ virtual void cbm2_pb2_w(int state) { };
+ virtual int cbm2_pb3_r() { return 1; }
+ virtual void cbm2_pb3_w(int state) { };
+
+ virtual void cbm2_pc_w(int state) { };
+ virtual void cbm2_cnt_w(int state) { };
+ virtual void cbm2_sp_w(int state) { };
+
+protected:
+ cbm2_user_port_device *m_slot;
+};
+
+
+// ======================> cbm2_user_port_device
+
+class cbm2_user_port_device : public device_t,
+ public device_slot_interface
+{
+public:
+ // construction/destruction
+ cbm2_user_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ virtual ~cbm2_user_port_device() { }
+
+ template<class _Object> static devcb_base &set_irq_wr_callback(device_t &device, _Object object) { return downcast<cbm2_user_port_device &>(device).m_write_irq.set_callback(object); }
+ template<class _Object> static devcb_base &set_sp_wr_callback(device_t &device, _Object object) { return downcast<cbm2_user_port_device &>(device).m_write_sp.set_callback(object); }
+ template<class _Object> static devcb_base &set_cnt_wr_callback(device_t &device, _Object object) { return downcast<cbm2_user_port_device &>(device).m_write_cnt.set_callback(object); }
+ template<class _Object> static devcb_base &set_flag_wr_callback(device_t &device, _Object object) { return downcast<cbm2_user_port_device &>(device).m_write_flag.set_callback(object); }
+
+ // computer interface
+ DECLARE_READ8_MEMBER( d1_r ) { UINT8 data = 0xff; if (m_card != NULL) data = m_card->cbm2_d1_r(space, offset); return data; }
+ DECLARE_WRITE8_MEMBER( d1_w ) { if (m_card != NULL) m_card->cbm2_d1_w(space, offset, data); }
+ DECLARE_READ8_MEMBER( d2_r ) { UINT8 data = 0xff; if (m_card != NULL) data = m_card->cbm2_d2_r(space, offset); return data; }
+ DECLARE_WRITE8_MEMBER( d2_w ) { if (m_card != NULL) m_card->cbm2_d2_w(space, offset, data); }
+ DECLARE_READ_LINE_MEMBER( pb2_r ) { return m_card ? m_card->cbm2_pb2_r() : 1; }
+ DECLARE_WRITE_LINE_MEMBER( pb2_w ) { if (m_card != NULL) m_card->cbm2_pb2_w(state); }
+ DECLARE_READ_LINE_MEMBER( pb3_r ) { return m_card ? m_card->cbm2_pb3_r() : 1; }
+ DECLARE_WRITE_LINE_MEMBER( pb3_w ) { if (m_card != NULL) m_card->cbm2_pb3_w(state); }
+ DECLARE_WRITE_LINE_MEMBER( pc_w ) { if (m_card != NULL) m_card->cbm2_pc_w(state); }
+ DECLARE_WRITE_LINE_MEMBER( cnt_w ) { if (m_card != NULL) m_card->cbm2_cnt_w(state); }
+ DECLARE_WRITE_LINE_MEMBER( sp_w ) { if (m_card != NULL) m_card->cbm2_sp_w(state); }
+
+ // cartridge interface
+ DECLARE_WRITE_LINE_MEMBER( irq_w ) { m_write_irq(state); }
+ DECLARE_WRITE_LINE_MEMBER( cia_sp_w ) { m_write_sp(state); }
+ DECLARE_WRITE_LINE_MEMBER( cia_cnt_w ) { m_write_cnt(state); }
+ DECLARE_WRITE_LINE_MEMBER( flag_w ) { m_write_flag(state); }
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+
+ devcb_write_line m_write_irq;
+ devcb_write_line m_write_sp;
+ devcb_write_line m_write_cnt;
+ devcb_write_line m_write_flag;
+
+ device_cbm2_user_port_interface *m_card;
+};
+
+
+// device type definition
+extern const device_type CBM2_USER_PORT;
+
+
+// slot devices
+SLOT_INTERFACE_EXTERN( cbm2_user_port_cards );
+
+
+
+#endif