summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/abcbus/db4106.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/abcbus/db4106.cpp')
-rw-r--r--src/devices/bus/abcbus/db4106.cpp211
1 files changed, 211 insertions, 0 deletions
diff --git a/src/devices/bus/abcbus/db4106.cpp b/src/devices/bus/abcbus/db4106.cpp
new file mode 100644
index 00000000000..edd604f610c
--- /dev/null
+++ b/src/devices/bus/abcbus/db4106.cpp
@@ -0,0 +1,211 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ DataBoard 4106 Minifloppy interface emulation
+
+*********************************************************************/
+
+#include "emu.h"
+#include "db4106.h"
+
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+#define Z80_TAG "maincpu"
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(DATABOARD_4106, databoard_4106_device, "abc_db4106", "DataBoard 4106 Minifloppy interface")
+
+
+//-------------------------------------------------
+// ROM( databoard_4106 )
+//-------------------------------------------------
+
+ROM_START( databoard_4106 )
+ ROM_REGION( 0x800, Z80_TAG, 0 )
+ ROM_LOAD("databoard-4106-a5.12-floppy-cont.bin", 0x000, 0x800, CRC(708f2a2f) SHA1(3f99ea2ef301d9e3415db152dad79171dc62cc2d) ) // single track controller
+ROM_END
+
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const tiny_rom_entry *databoard_4106_device::device_rom_region() const
+{
+ return ROM_NAME( databoard_4106 );
+}
+
+
+//-------------------------------------------------
+// ADDRESS_MAP( databoard_4106_mem )
+//-------------------------------------------------
+
+void databoard_4106_device::databoard_4106_mem(address_map &map)
+{
+ map(0x0000, 0x07ff).rom().region(Z80_TAG, 0);
+}
+
+
+//-------------------------------------------------
+// ADDRESS_MAP( databoard_4106_io )
+//-------------------------------------------------
+
+void databoard_4106_device::databoard_4106_io(address_map &map)
+{
+}
+
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void databoard_4106_device::device_add_mconfig(machine_config &config)
+{
+ Z80(config, m_maincpu, 4000000);
+ m_maincpu->set_memory_map(&databoard_4106_device::databoard_4106_mem);
+ m_maincpu->set_io_map(&databoard_4106_device::databoard_4106_io);
+}
+
+
+//-------------------------------------------------
+// INPUT_PORTS( databoard_4106 )
+//-------------------------------------------------
+
+INPUT_PORTS_START( databoard_4106 )
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor databoard_4106_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( databoard_4106 );
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// databoard_4106_device - constructor
+//-------------------------------------------------
+
+databoard_4106_device::databoard_4106_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, DATABOARD_4106, tag, owner, clock),
+ device_abcbus_card_interface(mconfig, *this),
+ m_maincpu(*this, Z80_TAG)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void databoard_4106_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void databoard_4106_device::device_reset()
+{
+ m_cs = false;
+}
+
+
+
+//**************************************************************************
+// ABC BUS INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+// abcbus_cs -
+//-------------------------------------------------
+
+void databoard_4106_device::abcbus_cs(uint8_t data)
+{
+}
+
+
+//-------------------------------------------------
+// abcbus_stat -
+//-------------------------------------------------
+
+uint8_t databoard_4106_device::abcbus_stat()
+{
+ uint8_t data = 0xff;
+
+ if (m_cs)
+ {
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// abcbus_inp -
+//-------------------------------------------------
+
+uint8_t databoard_4106_device::abcbus_inp()
+{
+ uint8_t data = 0xff;
+
+ if (m_cs)
+ {
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// abcbus_out -
+//-------------------------------------------------
+
+void databoard_4106_device::abcbus_out(uint8_t data)
+{
+ if (!m_cs) return;
+}
+
+
+//-------------------------------------------------
+// abcbus_c1 -
+//-------------------------------------------------
+
+void databoard_4106_device::abcbus_c1(uint8_t data)
+{
+ if (m_cs)
+ {
+ }
+}
+
+
+//-------------------------------------------------
+// abcbus_c3 -
+//-------------------------------------------------
+
+void databoard_4106_device::abcbus_c3(uint8_t data)
+{
+ if (m_cs)
+ {
+ m_maincpu->reset();
+ }
+}