/********************************************************************** Commodore Plus/4 Expansion Port emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. ********************************************************************** GND 1 A GND +5V 2 B C1 LOW +5V 3 C _BRESET _IRQ 4 D _RAS R/_W 5 E phi0 C1 HIGH 6 F A15 C2 LOW 7 H A14 C2 HIGH 8 J A13 _CS1 9 K A12 _CS0 10 L A11 _CAS 11 M A10 MUX 12 N A9 BA 13 P A8 D7 14 R A7 D6 15 S A6 D5 16 T A5 D4 17 U A4 D3 18 V A3 D2 19 W A2 D1 20 X A1 D0 21 Y A0 AEC 22 Z N.C. (RAMEN) EXT AUDIO 23 AA N.C. phi2 24 BB N.C. GND 25 CC GND **********************************************************************/ #pragma once #ifndef __PLUS4_EXPANSION_SLOT__ #define __PLUS4_EXPANSION_SLOT__ #include "emu.h" //************************************************************************** // CONSTANTS //************************************************************************** #define PLUS4_EXPANSION_SLOT_TAG "exp" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_PLUS4_EXPANSION_SLOT_ADD(_tag, _clock, _slot_intf, _def_slot, _def_inp, _irq) \ MCFG_DEVICE_ADD(_tag, PLUS4_EXPANSION_SLOT, _clock) \ downcast(device)->set_irq_callback(DEVCB2_##_irq); \ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false) #define MCFG_PLUS4_PASSTHRU_EXPANSION_SLOT_ADD() \ MCFG_PLUS4_EXPANSION_SLOT_ADD(PLUS4_EXPANSION_SLOT_TAG, 0, plus4_expansion_cards, NULL, NULL, DEVWRITELINE(DEVICE_SELF_OWNER, plus4_expansion_slot_device, irq_w)) \ MCFG_PLUS4_EXPANSION_SLOT_DMA_CALLBACKS(DEVREAD8(DEVICE_SELF_OWNER, plus4_expansion_slot_device, dma_cd_r), DEVWRITE8(DEVICE_SELF_OWNER, plus4_expansion_slot_device, dma_cd_w), DEVWRITELINE(DEVICE_SELF_OWNER, plus4_expansion_slot_device, aec_w)) #define MCFG_PLUS4_EXPANSION_SLOT_DMA_CALLBACKS(_read, _write, _aec) \ downcast(device)->set_dma_callbacks(DEVCB2_##_read, DEVCB2_##_write, DEVCB2_##_aec); //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> plus4_expansion_slot_device class device_plus4_expansion_card_interface; class plus4_expansion_slot_device : public device_t, public device_slot_interface, public device_image_interface { public: // construction/destruction plus4_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); template void set_irq_callback(_irq irq) { m_write_irq.set_callback(irq); } template void set_dma_callbacks(_read read, _write write, _aec aec) { m_read_dma_cd.set_callback(read); m_write_dma_cd.set_callback(write); m_write_aec.set_callback(aec); } // computer interface UINT8 cd_r(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h); void cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h); // cartridge interface DECLARE_READ8_MEMBER( dma_cd_r ) { return m_read_dma_cd(offset); } DECLARE_WRITE8_MEMBER( dma_cd_w ) { m_write_dma_cd(offset, data); } DECLARE_WRITE_LINE_MEMBER( irq_w ) { m_write_irq(state); } DECLARE_WRITE_LINE_MEMBER( aec_w ) { m_write_aec(state); } int phi2() { return clock(); } protected: // device-level overrides virtual void device_config_complete() { update_names(); } 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 "plus4_cart"; } virtual const char *file_extensions() const { return "rom,bin"; } 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); devcb2_write_line m_write_irq; devcb2_read8 m_read_dma_cd; devcb2_write8 m_write_dma_cd; devcb2_write_line m_write_aec; device_plus4_expansion_card_interface *m_card; }; // ======================> device_plus4_expansion_card_interface class device_plus4_expansion_card_interface : public device_slot_card_interface { friend class plus4_expansion_slot_device; public: // construction/destruction device_plus4_expansion_card_interface(const machine_config &mconfig, device_t &device); virtual ~device_plus4_expansion_card_interface(); // initialization virtual UINT8* plus4_c1l_pointer(running_machine &machine, size_t size); virtual UINT8* plus4_c1h_pointer(running_machine &machine, size_t size); virtual UINT8* plus4_c2l_pointer(running_machine &machine, size_t size); virtual UINT8* plus4_c2h_pointer(running_machine &machine, size_t size); virtual UINT8* plus4_ram_pointer(running_machine &machine, size_t size); virtual UINT8* plus4_nvram_pointer(running_machine &machine, size_t size); // runtime virtual UINT8 plus4_cd_r(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h) { return data; }; virtual void plus4_cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h) { }; protected: plus4_expansion_slot_device *m_slot; UINT8 *m_c1l; UINT8 *m_c1h; UINT8 *m_c2l; UINT8 *m_c2h; UINT8 *m_ram; UINT8 *m_nvram; size_t m_nvram_size; size_t m_c1l_mask; size_t m_c1h_mask; size_t m_c2l_mask; size_t m_c2h_mask; size_t m_ram_mask; size_t m_nvram_mask; }; // device type definition extern const device_type PLUS4_EXPANSION_SLOT; #endif