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-rw-r--r--src/devices/bus/acorn/atom/discpack.cpp117
1 files changed, 117 insertions, 0 deletions
diff --git a/src/devices/bus/acorn/atom/discpack.cpp b/src/devices/bus/acorn/atom/discpack.cpp
new file mode 100644
index 00000000000..5c357d22136
--- /dev/null
+++ b/src/devices/bus/acorn/atom/discpack.cpp
@@ -0,0 +1,117 @@
+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Acorn Atom Disc Pack
+
+**********************************************************************/
+
+
+#include "emu.h"
+#include "discpack.h"
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(ATOM_DISCPACK, atom_discpack_device, "atom_discpack", "Acorn Atom Disc Pack")
+
+//-------------------------------------------------
+// MACHINE_DRIVER( discpack )
+//-------------------------------------------------
+
+FLOPPY_FORMATS_MEMBER(atom_discpack_device::floppy_formats )
+ FLOPPY_ACORN_SSD_FORMAT
+FLOPPY_FORMATS_END
+
+static void atom_floppies(device_slot_interface &device)
+{
+ device.option_add("525sssd", FLOPPY_525_SSSD);
+ device.option_add("525sd", FLOPPY_525_SD);
+ device.option_add("525qd", FLOPPY_525_QD);
+}
+
+ROM_START( discpack )
+ ROM_REGION(0x1000, "dos_rom", 0)
+ ROM_LOAD("dosrom.ic18", 0x0000, 0x1000, CRC(c431a9b7) SHA1(71ea0a4b8d9c3caf9718fc7cc279f4306a23b39c))
+ROM_END
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void atom_discpack_device::device_add_mconfig(machine_config &config)
+{
+ I8271(config, m_fdc, 0);
+ m_fdc->intrq_wr_callback().set(FUNC(atom_discpack_device::fdc_intrq_w));
+ m_fdc->hdl_wr_callback().set(FUNC(atom_discpack_device::motor_w));
+ m_fdc->opt_wr_callback().set(FUNC(atom_discpack_device::side_w));
+ FLOPPY_CONNECTOR(config, m_floppy[0], atom_floppies, "525sssd", atom_discpack_device::floppy_formats);
+ m_floppy[0]->enable_sound(true);
+ FLOPPY_CONNECTOR(config, m_floppy[1], atom_floppies, nullptr, atom_discpack_device::floppy_formats);
+ m_floppy[1]->enable_sound(true);
+}
+
+
+const tiny_rom_entry *atom_discpack_device::device_rom_region() const
+{
+ return ROM_NAME( discpack );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// atom_discpack_device - constructor
+//-------------------------------------------------
+
+atom_discpack_device::atom_discpack_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : device_t(mconfig, ATOM_DISCPACK, tag, owner, clock)
+ , device_acorn_bus_interface(mconfig, *this)
+ , m_dos_rom(*this, "dos_rom")
+ , m_fdc(*this, "i8271")
+ , m_floppy(*this, "i8271:%u", 0)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void atom_discpack_device::device_start()
+{
+ set_acorn_bus_device();
+ address_space &space = m_bus->memspace();
+
+ space.install_device(0x0a00, 0x0a03, *m_fdc, &i8271_device::map);
+ space.install_readwrite_handler(0x0a04, 0x0a04, 0, 0x1f8, 0, read8_delegate(FUNC(i8271_device::data_r), m_fdc.target()), write8_delegate(FUNC(i8271_device::data_w), m_fdc.target()));
+ space.install_ram(0x2000, 0x23ff);
+ space.install_ram(0x2400, 0x27ff);
+ space.install_ram(0x3c00, 0x3fff);
+ space.install_rom(0xe000, 0xefff, m_dos_rom->base());
+}
+
+
+//**************************************************************************
+// IMPLEMENTATION
+//**************************************************************************
+
+WRITE_LINE_MEMBER(atom_discpack_device::motor_w)
+{
+ if (m_floppy[0]->get_device()) m_floppy[0]->get_device()->mon_w(!state);
+ if (m_floppy[1]->get_device()) m_floppy[1]->get_device()->mon_w(!state);
+}
+
+WRITE_LINE_MEMBER(atom_discpack_device::side_w)
+{
+ if (m_floppy[0]->get_device()) m_floppy[0]->get_device()->ss_w(state);
+ if (m_floppy[1]->get_device()) m_floppy[1]->get_device()->ss_w(state);
+}
+
+WRITE_LINE_MEMBER(atom_discpack_device::fdc_intrq_w)
+{
+ m_bus->nmi_w(state);
+}