/********************************************************************* a2diskii.c Implementation of the Apple II Disk II controller card *********************************************************************/ #include "emu.h" #include "includes/apple2.h" #include "imagedev/flopdrv.h" #include "formats/ap2_dsk.h" #include "machine/appldriv.h" #include "machine/applefdc.h" #include "a2diskii.h" /*************************************************************************** PARAMETERS ***************************************************************************/ //************************************************************************** // GLOBAL VARIABLES //************************************************************************** const device_type A2BUS_DISKII = &device_creator; const device_type A2BUS_IWM_FDC = &device_creator; #define DISKII_ROM_REGION "diskii_rom" #define FDC_TAG "diskii_fdc" const applefdc_interface fdc_interface = { apple525_set_lines, /* set_lines */ apple525_set_enable_lines, /* set_enable_lines */ apple525_read_data, /* read_data */ apple525_write_data, /* write_data */ apple525_read_status /* read_status */ }; static const floppy_interface floppy_interface = { DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, FLOPPY_STANDARD_5_25_DSHD, LEGACY_FLOPPY_OPTIONS_NAME(apple2), "floppy_5_25", NULL }; MACHINE_CONFIG_FRAGMENT( diskii ) MCFG_APPLEFDC_ADD(FDC_TAG, fdc_interface) MCFG_LEGACY_FLOPPY_APPLE_2_DRIVES_ADD(floppy_interface,15,16) MACHINE_CONFIG_END MACHINE_CONFIG_FRAGMENT( iwmflop ) MCFG_IWM_ADD(FDC_TAG, fdc_interface) MCFG_LEGACY_FLOPPY_APPLE_2_DRIVES_ADD(floppy_interface,15,16) MACHINE_CONFIG_END ROM_START( diskii ) ROM_REGION(0x100, DISKII_ROM_REGION, 0) ROM_LOAD( "341-0027-a.p5", 0x000000, 0x000100, CRC(ce7144f6) SHA1(d4181c9f046aafc3fb326b381baac809d9e38d16) ) ROM_END //------------------------------------------------- // machine_config_additions - device-specific // machine configurations //------------------------------------------------- machine_config_constructor a2bus_floppy_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( diskii ); } machine_config_constructor a2bus_iwmflop_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( iwmflop ); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const rom_entry *a2bus_floppy_device::device_rom_region() const { return ROM_NAME( diskii ); } //************************************************************************** // LIVE DEVICE //************************************************************************** a2bus_floppy_device::a2bus_floppy_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) : device_t(mconfig, type, name, tag, owner, clock, shortname, source), device_a2bus_card_interface(mconfig, *this), m_fdc(*this, FDC_TAG) { } a2bus_diskii_device::a2bus_diskii_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : a2bus_floppy_device(mconfig, A2BUS_DISKII, "Apple Disk II controller", tag, owner, clock, "a2diskii", __FILE__) { } a2bus_iwmflop_device::a2bus_iwmflop_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : a2bus_floppy_device(mconfig, A2BUS_IWM_FDC, "Apple IWM floppy card", tag, owner, clock, "a2iwm_flop", __FILE__) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void a2bus_floppy_device::device_start() { // set_a2bus_device makes m_slot valid set_a2bus_device(); astring tempstring; m_rom = device().machine().root_device().memregion(this->subtag(tempstring, DISKII_ROM_REGION))->base(); } void a2bus_floppy_device::device_reset() { } /*------------------------------------------------- read_c0nx - called for reads from this card's c0nx space -------------------------------------------------*/ UINT8 a2bus_floppy_device::read_c0nx(address_space &space, UINT8 offset) { return m_fdc->read(offset); } /*------------------------------------------------- write_c0nx - called for writes to this card's c0nx space -------------------------------------------------*/ void a2bus_floppy_device::write_c0nx(address_space &space, UINT8 offset, UINT8 data) { m_fdc->write(offset, data); } /*------------------------------------------------- read_cnxx - called for reads from this card's c0nx space -------------------------------------------------*/ UINT8 a2bus_floppy_device::read_cnxx(address_space &space, UINT8 offset) { return m_rom[offset]; }