diff options
Diffstat (limited to 'src/devices/bus/a2bus/a2diskiing.cpp')
-rw-r--r-- | src/devices/bus/a2bus/a2diskiing.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2diskiing.cpp b/src/devices/bus/a2bus/a2diskiing.cpp new file mode 100644 index 00000000000..de0f84c26db --- /dev/null +++ b/src/devices/bus/a2bus/a2diskiing.cpp @@ -0,0 +1,123 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + a2diskii.c + + Implementation of the Apple II Disk II controller card + +*********************************************************************/ + +#include "emu.h" +#include "imagedev/floppy.h" +#include "formats/ap2_dsk.h" +#include "a2diskiing.h" + +/*************************************************************************** + PARAMETERS +***************************************************************************/ + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type A2BUS_DISKIING = &device_creator<a2bus_diskiing_device>; + +#define WOZFDC_TAG "wozfdc" +#define DISKII_ROM_REGION "diskii_rom" + +static SLOT_INTERFACE_START( a2_floppies ) + SLOT_INTERFACE( "525", FLOPPY_525_SD ) +SLOT_INTERFACE_END + +static MACHINE_CONFIG_FRAGMENT( diskiing ) + MCFG_DEVICE_ADD(WOZFDC_TAG, DISKII_FDC, 1021800*2) + MCFG_FLOPPY_DRIVE_ADD("0", a2_floppies, "525", a2bus_diskiing_device::floppy_formats) + MCFG_FLOPPY_DRIVE_ADD("1", a2_floppies, "525", a2bus_diskiing_device::floppy_formats) +MACHINE_CONFIG_END + +ROM_START( diskiing ) + ROM_REGION(0x100, DISKII_ROM_REGION, 0) + ROM_LOAD( "341-0027-a.p5", 0x0000, 0x0100, CRC(ce7144f6) SHA1(d4181c9f046aafc3fb326b381baac809d9e38d16) ) /* 341-0027-a: 16-sector disk drive (older version), PROM P5 */ +ROM_END + +FLOPPY_FORMATS_MEMBER( a2bus_diskiing_device::floppy_formats ) + FLOPPY_A216S_FORMAT, FLOPPY_RWTS18_FORMAT, FLOPPY_EDD_FORMAT +FLOPPY_FORMATS_END + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor a2bus_diskiing_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( diskiing ); +} + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *a2bus_diskiing_device::device_rom_region() const +{ + return ROM_NAME( diskiing ); +} + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +a2bus_diskiing_device::a2bus_diskiing_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, A2BUS_DISKIING, "Apple Disk II NG controller", tag, owner, clock, "a2diskiing", __FILE__), + device_a2bus_card_interface(mconfig, *this), + m_wozfdc(*this, WOZFDC_TAG), + floppy0(*this, "0"), + floppy1(*this, "1") +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void a2bus_diskiing_device::device_start() +{ + // set_a2bus_device makes m_slot valid + set_a2bus_device(); + + m_rom = device().machine().root_device().memregion(this->subtag(DISKII_ROM_REGION).c_str())->base(); +} + +void a2bus_diskiing_device::device_reset() +{ + m_wozfdc->set_floppies(floppy0, floppy1); +} + +/*------------------------------------------------- + read_c0nx - called for reads from this card's c0nx space +-------------------------------------------------*/ + +UINT8 a2bus_diskiing_device::read_c0nx(address_space &space, UINT8 offset) +{ + return m_wozfdc->read(space, offset); +} + + +/*------------------------------------------------- + write_c0nx - called for writes to this card's c0nx space +-------------------------------------------------*/ + +void a2bus_diskiing_device::write_c0nx(address_space &space, UINT8 offset, UINT8 data) +{ + m_wozfdc->write(space, offset, data); +} + +/*------------------------------------------------- + read_cnxx - called for reads from this card's cnxx space +-------------------------------------------------*/ + +UINT8 a2bus_diskiing_device::read_cnxx(address_space &space, UINT8 offset) +{ + return m_rom[offset]; +} |