// license:BSD-3-Clause // copyright-holders:Wilbert Pol /*************************************************************************** Bandai WonderSwan cartridge slot 48-pin single-sided PCB edge connector The SoC maps the following ranges to the cartridge slot: * Memory 0x10000-0x1ffff 8-bit read/write (typically used for cartridge SRAM) 3-cycle access on WonderSwan, 1-cycle access on WonderSwan Color * Memory 0x20000-0xfffff 16-bit read-only (writes not emitted) * I/O 0xc0-0xff Pin Name Notes 1 GND 2 A15 3 A10 4 A11 5 A9 6 A8 7 A13 8 A14 9 A12 10 A7 11 A6 12 A5 13 A4 14 D15 15 D14 16 D7 17 D6 18 D5 19 D4 20 D3 21 D2 22 D1 23 D0 24 +3.3V 25 +3.3V 26 A0 27 A1 28 A2 29 A3 30 A19 31 A18 32 A17 33 A16 34 D8 35 D9 36 D10 37 D11 38 D12 39 D13 40 /RESET 41 ? input used while authenticating cartridge 42 IO/M low when accessing I/O ports 43 /RD 44 /WR 45 /CART low when accessing cartridge 46 INT usually used for RTC alarm interrupt 47 CLK 384 kHz on WonderSwan 48 GND ***************************************************************************/ #ifndef MAME_BUS_WSWAN_SLOT_H #define MAME_BUS_WSWAN_SLOT_H #pragma once #include "imagedev/cartrom.h" /*************************************************************************** TYPE DEFINITIONS ***************************************************************************/ /* PCB */ enum { WS_STD = 0, WS_SRAM, WS_EEPROM, WWITCH }; // ======================> device_ws_cart_interface class device_ws_cart_interface : public device_interface { public: // construction/destruction virtual ~device_ws_cart_interface(); // reading and writing virtual u16 read_rom20(offs_t offset, u16 mem_mask) { return 0xffff; } virtual u16 read_rom30(offs_t offset, u16 mem_mask) { return 0xffff; } virtual u16 read_rom40(offs_t offset, u16 mem_mask) { return 0xffff; } virtual u16 read_ram(offs_t offset, u16 mem_mask) { return 0xffff; } virtual void write_ram(offs_t offset, u16 data, u16 mem_mask) {} virtual u16 read_io(offs_t offset, u16 mem_mask) { return 0xffff; } virtual void write_io(offs_t offset, u16 data, u16 mem_mask) { } void rom_alloc(u32 size); void nvram_alloc(u32 size); u16* get_rom_base() { return m_rom; } uint8_t* get_nvram_base() { return &m_nvram[0]; } uint32_t get_rom_size() { return m_rom_size; } uint32_t get_nvram_size() { return m_nvram.size(); } void save_nvram() { device().save_item(NAME(m_nvram)); } void set_has_rtc(bool val) { m_has_rtc = val; } protected: device_ws_cart_interface(const machine_config &mconfig, device_t &device); // internal state u16 *m_rom; u32 m_rom_size; std::vector m_nvram; u32 m_nvram_size; int m_bank_mask; bool m_has_rtc; }; // ======================> ws_cart_slot_device class ws_cart_slot_device : public device_t, public device_cartrom_image_interface, public device_single_card_slot_interface { public: // construction/destruction template ws_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock, T &&opts, const char *dflt) : ws_cart_slot_device(mconfig, tag, owner, clock) { option_reset(); opts(*this); set_default_option(dflt); set_fixed(false); } ws_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); virtual ~ws_cart_slot_device(); // image-level overrides virtual std::error_condition call_load() override; virtual void call_unload() override; virtual bool is_reset_on_load() const noexcept override { return true; } virtual const char *image_interface() const noexcept override { return "wswan_cart"; } virtual const char *file_extensions() const noexcept override { return "ws,wsc,bin"; } // slot interface overrides virtual std::string get_default_card_software(get_default_card_software_hook &hook) const override; int get_type() { return m_type; } int get_cart_type(const u16 *ROM, u32 len, u32 &nvram_len) const; void internal_header_logging(const u16 *ROM, u32 offs, u32 len); void save_nvram() { if (m_cart && m_cart->get_nvram_size()) m_cart->save_nvram(); } // reading and writing virtual u16 read_rom20(offs_t offset, u16 mem_mask); virtual u16 read_rom30(offs_t offset, u16 mem_mask); virtual u16 read_rom40(offs_t offset, u16 mem_mask); virtual u16 read_ram(offs_t offset, u16 mem_mask); virtual void write_ram(offs_t offset, u16 data, u16 mem_mask); virtual u16 read_io(offs_t offset, u16 mem_mask); virtual void write_io(offs_t offset, u16 data, u16 mem_mask); protected: // device-level overrides virtual void device_start() override; int m_type; device_ws_cart_interface* m_cart; }; // device type definition DECLARE_DEVICE_TYPE(WS_CART_SLOT, ws_cart_slot_device) #endif // MAME_BUS_WSWAN_SLOT_H