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+/**********************************************************************
+
+ Commodore 64 Expansion Port emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************
+
+ GND 1 A GND
+ +5V 2 B _ROMH
+ +5V 3 C _RESET
+ _IRQ 4 D _NMI
+ _CR/W 5 E Sphi2
+ DOTCLK 6 F CA15
+ _I/O1 7 H CA14
+ _GAME 8 J CA13
+ _EXROM 9 K CA12
+ _I/O2 10 L CA11
+ _ROML 11 M CA10
+ BA 12 N CA9
+ _DMA 13 P CA8
+ CD7 14 R CA7
+ CD6 15 S CA6
+ CD5 16 T CA5
+ CD4 17 U CA4
+ CD3 18 V CA3
+ CD2 19 W CA2
+ CD1 20 X CA1
+ CD0 21 Y CA0
+ GND 22 Z GND
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __C64_EXPANSION_SLOT__
+#define __C64_EXPANSION_SLOT__
+
+#include "emu.h"
+#include "formats/cbm_crt.h"
+
+
+
+//**************************************************************************
+// CONSTANTS
+//**************************************************************************
+
+#define C64_EXPANSION_SLOT_TAG "exp"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define C64_EXPANSION_INTERFACE(_name) \
+ const c64_expansion_slot_interface (_name) =
+
+
+#define MCFG_C64_EXPANSION_SLOT_ADD(_tag, _clock, _config, _slot_intf, _def_slot, _def_inp) \
+ MCFG_DEVICE_ADD(_tag, C64_EXPANSION_SLOT, _clock) \
+ MCFG_DEVICE_CONFIG(_config) \
+ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false)
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> c64_expansion_slot_interface
+
+struct c64_expansion_slot_interface
+{
+ devcb_read8 m_in_dma_cd_cb;
+ devcb_write8 m_out_dma_cd_cb;
+ devcb_write_line m_out_irq_cb;
+ devcb_write_line m_out_nmi_cb;
+ devcb_write_line m_out_dma_cb;
+ devcb_write_line m_out_reset_cb;
+};
+
+
+// ======================> c64_expansion_slot_device
+
+class device_c64_expansion_card_interface;
+
+class c64_expansion_slot_device : public device_t,
+ public c64_expansion_slot_interface,
+ public device_slot_interface,
+ public device_image_interface
+{
+public:
+ // construction/destruction
+ c64_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ virtual ~c64_expansion_slot_device();
+
+ // computer interface
+ UINT8 cd_r(address_space &space, offs_t offset, int ba, int roml, int romh, int io1, int io2);
+ void cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int roml, int romh, int io1, int io2);
+ int game_r(offs_t offset, int ba, int rw, int hiram);
+ int exrom_r(offs_t offset, int ba, int rw, int hiram);
+ UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ DECLARE_WRITE_LINE_MEMBER( port_reset_w );
+
+ // cartridge interface
+ UINT8 dma_cd_r(offs_t offset);
+ void dma_cd_w(offs_t offset, UINT8 data);
+ DECLARE_WRITE_LINE_MEMBER( irq_w );
+ DECLARE_WRITE_LINE_MEMBER( nmi_w );
+ DECLARE_WRITE_LINE_MEMBER( dma_w );
+ DECLARE_WRITE_LINE_MEMBER( reset_w );
+ int phi2();
+ int dotclock();
+
+protected:
+ // device-level overrides
+ virtual void device_config_complete();
+ virtual void device_start();
+ virtual void device_reset();
+
+ // image-level overrides
+ virtual bool call_load();
+ virtual bool call_softlist_load(char *swlist, char *swname, rom_entry *start_entry);
+
+ virtual iodevice_t image_type() const { return IO_CARTSLOT; }
+
+ virtual bool is_readable() const { return 1; }
+ virtual bool is_writeable() const { return 0; }
+ virtual bool is_creatable() const { return 0; }
+ virtual bool must_be_loaded() const { return 0; }
+ virtual bool is_reset_on_load() const { return 1; }
+ virtual const char *image_interface() const { return "c64_cart,vic10_cart"; }
+ virtual const char *file_extensions() const { return "80,a0,e0,crt"; }
+ virtual const option_guide *create_option_guide() const { return NULL; }
+
+ // slot interface overrides
+ virtual const char * get_default_card_software(const machine_config &config, emu_options &options);
+
+ devcb_resolved_read8 m_in_dma_cd_func;
+ devcb_resolved_write8 m_out_dma_cd_func;
+ devcb_resolved_write_line m_out_irq_func;
+ devcb_resolved_write_line m_out_nmi_func;
+ devcb_resolved_write_line m_out_dma_func;
+ devcb_resolved_write_line m_out_reset_func;
+
+ device_c64_expansion_card_interface *m_cart;
+};
+
+
+// ======================> device_c64_expansion_card_interface
+
+class device_c64_expansion_card_interface : public device_slot_card_interface
+{
+ friend class c64_expansion_slot_device;
+
+public:
+ // construction/destruction
+ device_c64_expansion_card_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_c64_expansion_card_interface();
+
+protected:
+ // initialization
+ virtual UINT8* c64_roml_pointer(running_machine &machine, size_t size);
+ virtual UINT8* c64_romh_pointer(running_machine &machine, size_t size);
+ virtual UINT8* c64_ram_pointer(running_machine &machine, size_t size);
+ virtual UINT8* c64_nvram_pointer(running_machine &machine, size_t size);
+
+ // runtime
+ virtual UINT8 c64_cd_r(address_space &space, offs_t offset, int ba, int roml, int romh, int io1, int io2) { return 0; };
+ virtual void c64_cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int roml, int romh, int io1, int io2) { };
+ virtual int c64_game_r(offs_t offset, int ba, int rw, int hiram) { return m_game; }
+ virtual int c64_exrom_r(offs_t offset, int ba, int rw, int hiram) { return m_exrom; }
+ virtual void c64_reset_w(int state) { };
+ virtual UINT32 c64_screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; }
+
+ c64_expansion_slot_device *m_slot;
+
+ UINT8 *m_roml;
+ UINT8 *m_romh;
+ UINT8 *m_ram;
+ UINT8 *m_nvram;
+
+ size_t m_nvram_size;
+
+ size_t m_roml_mask;
+ size_t m_romh_mask;
+ size_t m_ram_mask;
+ size_t m_nvram_mask;
+
+ int m_game;
+ int m_exrom;
+};
+
+
+// device type definition
+extern const device_type C64_EXPANSION_SLOT;
+
+
+
+#endif