diff options
Diffstat (limited to 'src/mess/machine/vic10exp.h')
-rw-r--r-- | src/mess/machine/vic10exp.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/mess/machine/vic10exp.h b/src/mess/machine/vic10exp.h new file mode 100644 index 00000000000..298df7b6f7c --- /dev/null +++ b/src/mess/machine/vic10exp.h @@ -0,0 +1,186 @@ +/********************************************************************** + + Commodore VIC-10 Expansion Port emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +********************************************************************** + + GND 1 A GND + +5V 2 B _UPROM + +5V 3 C _RESET + _IRQ 4 D _NMI + _CR/W 5 E Sphi2 + SP 6 F CA15 + _EXRAM 7 H CA14 + CNT 8 J CA13 + _CIA 9 K CA12 + _CIA PLA 10 L CA11 + _LOROM 11 M CA10 + BA 12 N CA9 + R/_W PLA 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 + P2 22 Z GND + +**********************************************************************/ + +#pragma once + +#ifndef __VIC10_EXPANSION_SLOT__ +#define __VIC10_EXPANSION_SLOT__ + +#include "emu.h" +#include "formats/cbm_crt.h" + + + +//************************************************************************** +// CONSTANTS +//************************************************************************** + +#define VIC10_EXPANSION_SLOT_TAG "exp" + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define VIC10_EXPANSION_INTERFACE(_name) \ + const vic10_expansion_slot_interface (_name) = + + +#define MCFG_VIC10_EXPANSION_SLOT_ADD(_tag, _config, _slot_intf, _def_slot, _def_inp) \ + MCFG_DEVICE_ADD(_tag, VIC10_EXPANSION_SLOT, 0) \ + MCFG_DEVICE_CONFIG(_config) \ + MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false) + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> vic10_expansion_slot_interface + +struct vic10_expansion_slot_interface +{ + devcb_write_line m_out_irq_cb; + devcb_write_line m_out_sp_cb; + devcb_write_line m_out_cnt_cb; + devcb_write_line m_out_res_cb; +}; + + +// ======================> vic10_expansion_slot_device + +class device_vic10_expansion_card_interface; + +class vic10_expansion_slot_device : public device_t, + public vic10_expansion_slot_interface, + public device_slot_interface, + public device_image_interface +{ +public: + // construction/destruction + vic10_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + virtual ~vic10_expansion_slot_device(); + + // computer interface + UINT8 cd_r(address_space &space, offs_t offset, int lorom, int uprom, int exram); + void cd_w(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram); + DECLARE_READ_LINE_MEMBER( p0_r ); + DECLARE_WRITE_LINE_MEMBER( p0_w ); + DECLARE_WRITE_LINE_MEMBER( port_res_w ); + + // cartridge interface + DECLARE_WRITE_LINE_MEMBER( irq_w ); + DECLARE_WRITE_LINE_MEMBER( sp_w ); + DECLARE_WRITE_LINE_MEMBER( cnt_w ); + DECLARE_WRITE_LINE_MEMBER( res_w ); + + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + +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 1; } + virtual bool is_reset_on_load() const { return 1; } + virtual const char *image_interface() const { return "vic10_cart"; } + virtual const char *file_extensions() const { return "80,e0"; } + 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_write_line m_out_irq_func; + devcb_resolved_write_line m_out_sp_func; + devcb_resolved_write_line m_out_cnt_func; + devcb_resolved_write_line m_out_res_func; + + device_vic10_expansion_card_interface *m_cart; +}; + + +// ======================> device_vic10_expansion_card_interface + +// class representing interface-specific live vic10_expansion card +class device_vic10_expansion_card_interface : public device_slot_card_interface +{ + friend class vic10_expansion_slot_device; + +public: + // construction/destruction + device_vic10_expansion_card_interface(const machine_config &mconfig, device_t &device); + virtual ~device_vic10_expansion_card_interface(); + +protected: + // initialization + virtual UINT8* vic10_exram_pointer(running_machine &machine, size_t size); + virtual UINT8* vic10_lorom_pointer(running_machine &machine, size_t size); + virtual UINT8* vic10_uprom_pointer(running_machine &machine, size_t size); + + // runtime + virtual UINT8 vic10_cd_r(address_space &space, offs_t offset, int lorom, int uprom, int exram) { return 0; }; + virtual void vic10_cd_w(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram) { }; + virtual int vic10_p0_r() { return 0; }; + virtual void vic10_p0_w(int state) { }; + virtual void vic10_sp_w(int state) { }; + virtual void vic10_cnt_w(int state) { }; + virtual UINT32 vic10_screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return false; } + virtual void vic10_res_w(int state) { }; + + vic10_expansion_slot_device *m_slot; + + UINT8 *m_exram; + UINT8 *m_lorom; + UINT8 *m_uprom; +}; + + +// device type definition +extern const device_type VIC10_EXPANSION_SLOT; + + + +#endif |