// license:BSD-3-Clause // copyright-holders:R. Belmont /********************************************************************* a2diskii.c Implementation of the Apple II Disk II controller card *********************************************************************/ #include "emu.h" #include "imagedev/flopdrv.h" #include "formats/ap2_dsk.h" #include "machine/appldriv.h" #include "a2diskii.h" /*************************************************************************** PARAMETERS ***************************************************************************/ //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(A2BUS_DISKII, a2bus_diskii_device, "a2diskii", "Apple Disk II controller") DEFINE_DEVICE_TYPE(A2BUS_IWM_FDC, a2bus_iwmflop_device, "a2iwm_flop", "Apple IWM floppy card") DEFINE_DEVICE_TYPE(A2BUS_AGAT7_FDC, a2bus_agat7flop_device, "agat7_flop", "Agat-7 140K floppy card") DEFINE_DEVICE_TYPE(A2BUS_AGAT9_FDC, a2bus_agat9flop_device, "agat9_flop", "Agat-9 140K floppy card") #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 = { FLOPPY_STANDARD_5_25_DSHD, LEGACY_FLOPPY_OPTIONS_NAME(apple2), "floppy_5_25" }; ROM_START( diskii ) ROM_REGION(0x100, DISKII_ROM_REGION, 0) ROM_LOAD( "341-0027-a.p5", 0x000000, 0x000100, CRC(ce7144f6) SHA1(d4181c9f046aafc3fb326b381baac809d9e38d16) ) ROM_END ROM_START( agat7 ) ROM_REGION(0x100, DISKII_ROM_REGION, 0) ROM_LOAD( "shugart7.rom", 0x0000, 0x0100, CRC(c6e4850c) SHA1(71626d3d2d4bbeeac2b77585b45a5566d20b8d34) ) ROM_END ROM_START( agat9 ) ROM_REGION(0x100, DISKII_ROM_REGION, 0) ROM_LOAD( "shugart9.rom", 0x0000, 0x0100, CRC(964a0ce2) SHA1(bf955189ebffe874c20ef649a3db8177dc16af61) ) ROM_END //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void a2bus_floppy_device::device_add_mconfig(machine_config &config) { APPLEFDC(config, m_fdc, &fdc_interface); FLOPPY_APPLE(config, FLOPPY_0, &floppy_interface, 15, 16); FLOPPY_APPLE(config, FLOPPY_1, &floppy_interface, 15, 16); } void a2bus_iwmflop_device::device_add_mconfig(machine_config &config) { IWM(config, m_fdc, &fdc_interface); FLOPPY_APPLE(config, FLOPPY_0, &floppy_interface, 15, 16); FLOPPY_APPLE(config, FLOPPY_1, &floppy_interface, 15, 16); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *a2bus_floppy_device::device_rom_region() const { return ROM_NAME( diskii ); } const tiny_rom_entry *a2bus_agat7flop_device::device_rom_region() const { return ROM_NAME( agat7 ); } const tiny_rom_entry *a2bus_agat9flop_device::device_rom_region() const { return ROM_NAME( agat9 ); } //************************************************************************** // LIVE DEVICE //************************************************************************** a2bus_floppy_device::a2bus_floppy_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, type, tag, owner, clock), device_a2bus_card_interface(mconfig, *this), m_fdc(*this, FDC_TAG), m_rom(nullptr) { } a2bus_diskii_device::a2bus_diskii_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : a2bus_floppy_device(mconfig, A2BUS_DISKII, tag, owner, clock) { } a2bus_iwmflop_device::a2bus_iwmflop_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : a2bus_floppy_device(mconfig, A2BUS_IWM_FDC, tag, owner, clock) { } a2bus_agat7flop_device::a2bus_agat7flop_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : a2bus_floppy_device(mconfig, A2BUS_AGAT7_FDC, tag, owner, clock) { } a2bus_agat9flop_device::a2bus_agat9flop_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : a2bus_floppy_device(mconfig, A2BUS_AGAT9_FDC, tag, owner, clock) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void a2bus_floppy_device::device_start() { m_rom = device().machine().root_device().memregion(this->subtag(DISKII_ROM_REGION).c_str())->base(); } void a2bus_floppy_device::device_reset() { } /*------------------------------------------------- read_c0nx - called for reads from this card's c0nx space -------------------------------------------------*/ uint8_t a2bus_floppy_device::read_c0nx(uint8_t offset) { return m_fdc->read(offset); } /*------------------------------------------------- write_c0nx - called for writes to this card's c0nx space -------------------------------------------------*/ void a2bus_floppy_device::write_c0nx(uint8_t offset, uint8_t data) { m_fdc->write(offset, data); } /*------------------------------------------------- read_cnxx - called for reads from this card's c0nx space -------------------------------------------------*/ uint8_t a2bus_floppy_device::read_cnxx(uint8_t offset) { return m_rom[offset]; }