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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* cpcexp.h -- Amstrad CPC Expansion port
*
* Created on: 16/07/2011
*
* Pinout from CPC6128 User's Manual
* SOUND 1 2 GND
* A15 3 4 A14
* A13 5 6 A12
* A11 7 8 A10
* A9 9 10 A8
* A7 11 12 A6
* A5 13 14 A4
* A3 15 16 A2
* A1 17 18 A0
* D7 19 20 D6
* D5 21 22 D4
* D3 23 24 D2
* D1 25 26 D0
* +5v 27 28 _MREQ
* _M1 29 30 _RFSH
* _IORQ 31 32 _RD
* _WR 33 34 _HALT
* _INT 35 36 _NMI
* _BUSR2 37 38 _BUSAK
* READY 39 40 _BUS RESET
* _RESET 41 42 _ROMEN
* ROMDIS 43 44 _RAMRD
* RAMDIS 45 46 CURSOR
* L.PEN 47 48 _EXP
* GND 49 50 CLOCK
*
* Aleste 520EX expansion port is 62-pin. Same as the CPC above, except that pin 40 is not connected, plus the following:
*
* MAP14 A26 B26 MAP15
* MAP16 A27 B27 MAP17
* MAP18 A28 B28 MAPBLK
* _INTA A29 B29 _DISP
* Agnd A30 B30 _CPU
* Aucc A31 B31 HIGH
*
*/
#pragma once
#ifndef CPCEXP_H_
#define CPCEXP_H_
//**************************************************************************
// CONSTANTS
//**************************************************************************
#define CPC_EXP_SLOT_TAG "cpcexp"
enum
{
MAP_LOWER = 0, // special lower ROM handling
MAP_UPPER, // special upper ROM handling
MAP_OTHER // custom ROM handling (eg: Brunword MK4)
};
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_CPC_EXPANSION_SLOT_OUT_IRQ_CB(_devcb) \
devcb = &cpc_expansion_slot_device::set_out_irq_callback(*device, DEVCB_##_devcb);
#define MCFG_CPC_EXPANSION_SLOT_OUT_NMI_CB(_devcb) \
devcb = &cpc_expansion_slot_device::set_out_nmi_callback(*device, DEVCB_##_devcb);
#define MCFG_CPC_EXPANSION_SLOT_OUT_RESET_CB(_devcb) \
devcb = &cpc_expansion_slot_device::set_out_reset_callback(*device, DEVCB_##_devcb);
#define MCFG_CPC_EXPANSION_SLOT_OUT_ROMDIS_CB(_devcb) \
devcb = &cpc_expansion_slot_device::set_out_romdis_callback(*device, DEVCB_##_devcb);
#define MCFG_CPC_EXPANSION_SLOT_ROM_SELECT(_devcb) \
devcb = &cpc_expansion_slot_device::set_out_rom_select_callback(*device, DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> device_cpc_expansion_card_interface
// class representing interface-specific live cpc_expansion card
class device_cpc_expansion_card_interface : public device_slot_card_interface
{
public:
// construction/destruction
device_cpc_expansion_card_interface(const machine_config &mconfig, device_t &device);
virtual ~device_cpc_expansion_card_interface();
// reset
virtual void cpc_reset_w() { };
virtual WRITE_LINE_MEMBER( cursor_w ) { };
virtual WRITE_LINE_MEMBER( romen_w ) { };
void set_rom_bank(uint8_t sel) { m_rom_sel = sel; } // tell device the currently selected ROM
uint8_t get_rom_bank() { return m_rom_sel; }
virtual void set_mapping(uint8_t type) { };
private:
uint8_t m_rom_sel; // currently selected ROM
};
// ======================> cpc_expansion_slot_device
class cpc_expansion_slot_device : public device_t,
public device_slot_interface
{
public:
// construction/destruction
cpc_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ~cpc_expansion_slot_device();
template<class _Object> static devcb_base &set_out_irq_callback(device_t &device, _Object object) { return downcast<cpc_expansion_slot_device &>(device).m_out_irq_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_nmi_callback(device_t &device, _Object object) { return downcast<cpc_expansion_slot_device &>(device).m_out_nmi_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_reset_callback(device_t &device, _Object object) { return downcast<cpc_expansion_slot_device &>(device).m_out_reset_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_romdis_callback(device_t &device, _Object object) { return downcast<cpc_expansion_slot_device &>(device).m_out_romdis_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_rom_select_callback(device_t &device, _Object object) { return downcast<cpc_expansion_slot_device &>(device).m_out_rom_select.set_callback(object); }
DECLARE_WRITE_LINE_MEMBER( irq_w );
DECLARE_WRITE_LINE_MEMBER( nmi_w );
DECLARE_WRITE_LINE_MEMBER( reset_w );
DECLARE_WRITE_LINE_MEMBER( romdis_w );
DECLARE_WRITE8_MEMBER( rom_select );
void set_rom_bank(uint8_t sel) { if(m_card) m_card->set_rom_bank(sel); } // tell device the currently selected ROM
void set_mapping(uint8_t type) { if(m_card) m_card->set_mapping(type); } // tell device to enable any ROM or RAM mapping
DECLARE_WRITE_LINE_MEMBER( cursor_w ) { if(m_card) m_card->cursor_w(state); } // pass on CRTC Cursor signal
DECLARE_WRITE_LINE_MEMBER( romen_w ) { if(m_card) m_card->romen_w(state); } // pass on /ROMEN signal
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
devcb_write_line m_out_irq_cb;
devcb_write_line m_out_nmi_cb;
devcb_write_line m_out_reset_cb;
devcb_write_line m_out_romdis_cb;
devcb_write8 m_out_rom_select;
device_cpc_expansion_card_interface *m_card;
};
// device type definition
extern const device_type CPC_EXPANSION_SLOT;
#endif /* CPCEXP_H_ */
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