diff options
Diffstat (limited to 'src/devices/bus/vcs/vcs_slot.h')
-rwxr-xr-x | src/devices/bus/vcs/vcs_slot.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/devices/bus/vcs/vcs_slot.h b/src/devices/bus/vcs/vcs_slot.h new file mode 100755 index 00000000000..9b087988d80 --- /dev/null +++ b/src/devices/bus/vcs/vcs_slot.h @@ -0,0 +1,160 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +#ifndef __VCS_SLOT_H +#define __VCS_SLOT_H + + +/*************************************************************************** + TYPE DEFINITIONS + ***************************************************************************/ + + +/* PCB */ +enum +{ + A26_2K = 0, + A26_4K, + A26_F4, + A26_F6, + A26_F8, + A26_F8SW, + A26_FA, + A26_FE, + A26_3E, // to test + A26_3F, + A26_E0, + A26_E7, + A26_UA, + A26_DC, + A26_CV, + A26_FV, + A26_JVP, // to test + A26_32IN1, + A26_8IN1, + A26_4IN1, + A26_DPC, + A26_SS, + A26_CM +}; + + +// ======================> device_vcs_cart_interface + +class device_vcs_cart_interface : public device_slot_card_interface +{ +public: + // construction/destruction + device_vcs_cart_interface(const machine_config &mconfig, device_t &device); + virtual ~device_vcs_cart_interface(); + + // reading from ROM + virtual DECLARE_READ8_MEMBER(read_rom) { return 0xff; } + // writing to RAM chips (sometimes it is in a different range than write_bank!) + virtual DECLARE_WRITE8_MEMBER(write_ram) {} + + // read/write to bankswitch address + virtual DECLARE_READ8_MEMBER(read_bank) { return 0xff; } + virtual DECLARE_WRITE8_MEMBER(write_bank) {} + + // direct update handler + virtual DECLARE_DIRECT_UPDATE_MEMBER(cart_opbase) { return address; } + + virtual void setup_addon_ptr(UINT8 *ptr) {} + + void rom_alloc(UINT32 size, const char *tag); + void ram_alloc(UINT32 size); + UINT8* get_rom_base() { return m_rom; } + UINT8* get_ram_base() { return &m_ram[0]; } + UINT32 get_rom_size() { return m_rom_size; } + UINT32 get_ram_size() { return m_ram.size(); } + +protected: + // internal state + UINT8 *m_rom; + UINT32 m_rom_size; + dynamic_buffer m_ram; +}; + + +// ======================> vcs_cart_slot_device + +class vcs_cart_slot_device : public device_t, + public device_image_interface, + public device_slot_interface +{ +public: + // construction/destruction + vcs_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + virtual ~vcs_cart_slot_device(); + + // device-level overrides + virtual void device_start(); + virtual void device_config_complete(); + + // image-level overrides + virtual bool call_load(); + virtual void call_unload(); + virtual bool call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry); + + int get_cart_type() { return m_type; }; + int identify_cart_type(UINT8 *ROM, UINT32 len); + + 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 1; } + virtual bool is_reset_on_load() const { return 1; } + virtual const option_guide *create_option_guide() const { return NULL; } + virtual const char *image_interface() const { return "a2600_cart"; } + virtual const char *file_extensions() const { return "bin,a26"; } + + // slot interface overrides + virtual void get_default_card_software(std::string &result); + + // reading and writing + virtual DECLARE_READ8_MEMBER(read_rom); + virtual DECLARE_READ8_MEMBER(read_bank); + virtual DECLARE_WRITE8_MEMBER(write_bank); + virtual DECLARE_WRITE8_MEMBER(write_ram); + virtual DECLARE_DIRECT_UPDATE_MEMBER(cart_opbase); + +private: + device_vcs_cart_interface* m_cart; + int m_type; + + int detect_snowhite(UINT8 *cart, UINT32 len); + int detect_modeDC(UINT8 *cart, UINT32 len); + int detect_modeF6(UINT8 *cart, UINT32 len); + int detect_mode3E(UINT8 *cart, UINT32 len); + int detect_modeSS(UINT8 *cart, UINT32 len); + int detect_modeFE(UINT8 *cart, UINT32 len); + int detect_modeE0(UINT8 *cart, UINT32 len); + int detect_modeCV(UINT8 *cart, UINT32 len); + int detect_modeFV(UINT8 *cart, UINT32 len); + int detect_modeJVP(UINT8 *cart, UINT32 len); + int detect_modeE7(UINT8 *cart, UINT32 len); + int detect_modeUA(UINT8 *cart, UINT32 len); + int detect_8K_mode3F(UINT8 *cart, UINT32 len); + int detect_32K_mode3F(UINT8 *cart, UINT32 len); + int detect_super_chip(UINT8 *cart, UINT32 len); +}; + + +// device type definition +extern const device_type VCS_CART_SLOT; + + +/*************************************************************************** + DEVICE CONFIGURATION MACROS + ***************************************************************************/ + +#define A26SLOT_ROM_REGION_TAG ":cart:rom" + + +#define MCFG_VCS_CARTRIDGE_ADD(_tag,_slot_intf,_def_slot) \ + MCFG_DEVICE_ADD(_tag, VCS_CART_SLOT, 0) \ + MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) + + +#endif |