// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** VideoBrain Expansion Port emulation ********************************************************************** GND 1 2 BO2 BO1 3 4 BO0 BA0 5 6 BA1 BA2 7 8 BA3 BA4 9 10 BA5 BA6 11 12 BA7 +5V 13 14 BA8 BA9 15 16 _CS1 BA10 17 18 BO7 BO6 19 20 BO5 BO4 21 22 BO3 BA11 23 24 BA12 BRC 25 26 ? EXTRES 27 28 _CS2 ? 29 30 UV202/35 HBLANK 31 32 UV201/5 UV201/2 33 34 UV201/4 UV201/3 35 36 BISTROBE UV202/1 37 38 BA13 UV202/18 39 40 ? R/W 41 42 +5V GND 43 44 GND GND 45 46 N/C ? 47 48 N/C N/C 49 50 N/C **********************************************************************/ #ifndef MAME_BUS_VIDBRAIN_EXP_H #define MAME_BUS_VIDBRAIN_EXP_H #pragma once #include "softlist_dev.h" //************************************************************************** // CONSTANTS //************************************************************************** #define VIDEOBRAIN_EXPANSION_SLOT_TAG "exp" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class videobrain_expansion_slot_device; // ======================> device_videobrain_expansion_card_interface class device_videobrain_expansion_card_interface : public device_slot_card_interface { friend class videobrain_expansion_slot_device; public: // construction/destruction virtual ~device_videobrain_expansion_card_interface() { } protected: device_videobrain_expansion_card_interface(const machine_config &mconfig, device_t &device); // initialization virtual uint8_t* videobrain_rom_pointer(running_machine &machine, size_t size); virtual uint8_t* videobrain_ram_pointer(running_machine &machine, size_t size); // runtime virtual uint8_t videobrain_bo_r(offs_t offset, int cs1, int cs2) { return 0; } virtual void videobrain_bo_w(offs_t offset, uint8_t data, int cs1, int cs2) { } virtual void videobrain_extres_w() { } videobrain_expansion_slot_device *m_slot; std::vector m_rom; std::vector m_ram; size_t m_rom_mask; size_t m_ram_mask; }; // ======================> videobrain_expansion_slot_device class videobrain_expansion_slot_device : public device_t, public device_slot_interface, public device_image_interface { public: // construction/destruction template videobrain_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, T &&opts, char const* dflt) : videobrain_expansion_slot_device(mconfig, tag, owner, 0) { option_reset(); opts(*this); set_default_option(dflt); set_fixed(false); } videobrain_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); auto extres_wr_callback() { return m_write_extres.bind(); } // computer interface uint8_t bo_r(offs_t offset, int cs1, int cs2); void bo_w(offs_t offset, uint8_t data, int cs1, int cs2); uint8_t cs1_r(offs_t offset) { return bo_r(offset + 0x1000, 0, 1); } void cs1_w(offs_t offset, uint8_t data) { bo_w(offset + 0x1000, data, 0, 1); } uint8_t cs2_r(offs_t offset) { return bo_r(offset + 0x1800, 1, 0); } void cs2_w(offs_t offset, uint8_t data) { bo_w(offset + 0x1800, data, 1, 0); } uint8_t unmap_r(offs_t offset) { return bo_r(offset + 0x3000, 1, 0); } void unmap_w(offs_t offset, uint8_t data) { bo_w(offset + 0x3000, data, 1, 0); } // cartridge interface DECLARE_WRITE_LINE_MEMBER( extres_w ) { m_write_extres(state); } protected: // device-level overrides virtual void device_start() override; // image-level overrides virtual image_init_result call_load() override; virtual const software_list_loader &get_software_list_loader() const override { return rom_software_list_loader::instance(); } virtual iodevice_t image_type() const override { return IO_CARTSLOT; } virtual bool is_readable() const override { return 1; } virtual bool is_writeable() const override { return 0; } virtual bool is_creatable() const override { return 0; } virtual bool must_be_loaded() const override { return 0; } virtual bool is_reset_on_load() const override { return 1; } virtual const char *image_interface() const override { return "vidbrain_cart"; } virtual const char *file_extensions() const override { return "bin"; } // slot interface overrides virtual std::string get_default_card_software(get_default_card_software_hook &hook) const override; devcb_write_line m_write_extres; device_videobrain_expansion_card_interface *m_cart; }; // device type definition DECLARE_DEVICE_TYPE(VIDEOBRAIN_EXPANSION_SLOT, videobrain_expansion_slot_device) void vidbrain_expansion_cards(device_slot_interface &device); #endif // MAME_BUS_VIDBRAIN_EXP_H