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Diffstat (limited to 'src/devices/bus/thomson/cd90_640.cpp')
-rw-r--r--src/devices/bus/thomson/cd90_640.cpp91
1 files changed, 91 insertions, 0 deletions
diff --git a/src/devices/bus/thomson/cd90_640.cpp b/src/devices/bus/thomson/cd90_640.cpp
new file mode 100644
index 00000000000..4cae4efb97a
--- /dev/null
+++ b/src/devices/bus/thomson/cd90_640.cpp
@@ -0,0 +1,91 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+
+// CD 90-640 - Floppy drive controller built from a wd1770
+//
+// Handles up to two 5.25 dual-sided drives (DD 90-320)
+
+#include "emu.h"
+#include "cd90_640.h"
+#include "formats/thom_dsk.h"
+
+DEFINE_DEVICE_TYPE(CD90_640, cd90_640_device, "cd90_640", "Thomson CD90-640 floppy drive controller")
+
+cd90_640_device::cd90_640_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, CD90_640, tag, owner, clock),
+ thomson_extension_interface(mconfig, *this),
+ m_fdc(*this, "fdc"),
+ m_floppy(*this, "%u", 0U),
+ m_rom(*this, "rom")
+{
+}
+
+ROM_START(cd90_640)
+ ROM_REGION( 0x7c0, "rom", 0 )
+ ROM_LOAD ( "cd90-640.rom", 0x000, 0x7c0, CRC(5114c0a5) SHA1(5c72566c22d8160ef0c75959e1863a1309bbbe49) )
+ROM_END
+
+void cd90_640_device::rom_map(address_map &map)
+{
+ map(0x000, 0x7bf).rom().region(m_rom, 0);
+}
+
+void cd90_640_device::io_map(address_map &map)
+{
+ map(0, 3).rw(m_fdc, FUNC(wd1770_device::read), FUNC(wd1770_device::write));
+ map(8, 8).rw(FUNC(cd90_640_device::control_r), FUNC(cd90_640_device::control_w));
+}
+
+const tiny_rom_entry *cd90_640_device::device_rom_region() const
+{
+ return ROM_NAME(cd90_640);
+}
+
+void cd90_640_device::floppy_drives(device_slot_interface &device)
+{
+ device.option_add("dd90_640", FLOPPY_525_DD);
+}
+
+void cd90_640_device::floppy_formats(format_registration &fr)
+{
+ fr.add(FLOPPY_THOMSON_525_FORMAT);
+}
+
+void cd90_640_device::device_add_mconfig(machine_config &config)
+{
+ WD1770(config, m_fdc, 8_MHz_XTAL);
+ FLOPPY_CONNECTOR(config, m_floppy[0], floppy_drives, "dd90_640", floppy_formats).enable_sound(true);
+ FLOPPY_CONNECTOR(config, m_floppy[1], floppy_drives, nullptr, floppy_formats).enable_sound(true);
+}
+
+void cd90_640_device::device_start()
+{
+ save_item(NAME(m_control));
+}
+
+void cd90_640_device::device_reset()
+{
+ m_control = 0;
+ m_fdc->set_floppy(nullptr);
+ m_fdc->dden_w(0);
+}
+
+void cd90_640_device::control_w(u8 data)
+{
+ m_control = data;
+ floppy_image_device *floppy = nullptr;
+ if(m_control & 2)
+ floppy = m_floppy[0]->get_device();
+ else if(m_control & 4)
+ floppy = m_floppy[1]->get_device();
+ if(floppy)
+ floppy->ss_w(m_control & 1);
+ m_fdc->set_floppy(floppy);
+ m_fdc->dden_w(m_control & 0x80 ? 1 : 0);
+ logerror("control %02x\n", m_control);
+}
+
+u8 cd90_640_device::control_r()
+{
+ return m_control;
+}