abc800: Added skeleton for Databoard 4112-23 floppy disk controller. [Curt Coder]

scripts/src/bus.lua

@@ -66,6 +66,8 @@ if (BUSES["ABCBUS"]~=null) then
 		MAME_DIR .. "src/devices/bus/abcbus/abcbus.h",
 		MAME_DIR .. "src/devices/bus/abcbus/abc890.cpp",
 		MAME_DIR .. "src/devices/bus/abcbus/abc890.h",
+		MAME_DIR .. "src/devices/bus/abcbus/db411223.cpp",
+		MAME_DIR .. "src/devices/bus/abcbus/db411223.h",
 		MAME_DIR .. "src/devices/bus/abcbus/fd2.cpp",
 		MAME_DIR .. "src/devices/bus/abcbus/fd2.h",
 		MAME_DIR .. "src/devices/bus/abcbus/hdc.cpp",

src/devices/bus/abcbus/abcbus.cpp

@@ -80,6 +80,7 @@ void abcbus_slot_device::device_start()
 
 // slot devices
 #include "abc890.h"
+#include "db411223.h"
 #include "fd2.h"
 #include "hdc.h"
 #include "lux10828.h"
@@ -106,6 +107,7 @@ SLOT_INTERFACE_START( abc80_cards )
 	SLOT_INTERFACE("16k", ABC80_16KB_RAM_CARD)
 	SLOT_INTERFACE("slow", LUXOR_55_10828)
 	SLOT_INTERFACE("abc830", ABC830)
+	SLOT_INTERFACE("db411223", DATABOARD_4112_23)
 	SLOT_INTERFACE("unidisk", UNIDISK)
 SLOT_INTERFACE_END
 
@@ -125,6 +127,7 @@ SLOT_INTERFACE_START( abcbus_cards )
 	SLOT_INTERFACE("abc856", ABC856)
 	SLOT_INTERFACE("abc890", ABC890)
 	SLOT_INTERFACE("abc894", ABC894)
+	SLOT_INTERFACE("db411223", DATABOARD_4112_23)
 	SLOT_INTERFACE("hdc", ABC_HDC)
 	SLOT_INTERFACE("sio", ABC_SIO)
 	SLOT_INTERFACE("slow", LUXOR_55_10828)

src/devices/bus/abcbus/db411223.cpp

@@ -0,0 +1,208 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+    Databoard 4112-23 floppy disk controller emulation
+
+*********************************************************************/
+
+#include "emu.h"
+#include "db411223.h"
+
+
+
+//**************************************************************************
+//  MACROS / CONSTANTS
+//**************************************************************************
+
+#define Z80_TAG	"maincpu"
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(DATABOARD_4112_23, databoard_4112_23_t, "db411223", "Databoard 4112-23")
+
+
+//-------------------------------------------------
+//  ROM( databoard_4112_23 )
+//-------------------------------------------------
+
+ROM_START( databoard_4112_23 )
+	ROM_REGION( 0x2000, Z80_TAG, 0 )
+	ROM_LOAD("fpy_int_4112-23_teac_fd55.bin", 0x0000, 0x2000, CRC(9175ceb8) SHA1(95c150d3152df318abd9267915d5669d2ec33895))
+ROM_END
+
+
+//-------------------------------------------------
+//  rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const tiny_rom_entry *databoard_4112_23_t::device_rom_region() const
+{
+	return ROM_NAME( databoard_4112_23 );
+}
+
+
+//-------------------------------------------------
+//  ADDRESS_MAP( databoard_4112_23_mem )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( databoard_4112_23_mem, AS_PROGRAM, 8, databoard_4112_23_t )
+	AM_RANGE(0x0000, 0x1fff) AM_ROM AM_REGION(Z80_TAG, 0)
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+//  ADDRESS_MAP( databoard_4112_23_io )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( databoard_4112_23_io, AS_IO, 8, databoard_4112_23_t )
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+//  device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+MACHINE_CONFIG_MEMBER( databoard_4112_23_t::device_add_mconfig )
+	MCFG_CPU_ADD(Z80_TAG, Z80, 4000000)
+	MCFG_CPU_PROGRAM_MAP(databoard_4112_23_mem)
+	MCFG_CPU_IO_MAP(databoard_4112_23_io)
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+//  INPUT_PORTS( databoard_4112_23 )
+//-------------------------------------------------
+
+INPUT_PORTS_START( databoard_4112_23 )
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+//  input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor databoard_4112_23_t::device_input_ports() const
+{
+	return INPUT_PORTS_NAME( databoard_4112_23 );
+}
+
+
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  databoard_4112_23_t - constructor
+//-------------------------------------------------
+
+databoard_4112_23_t::databoard_4112_23_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+	device_t(mconfig, DATABOARD_4112_23, tag, owner, clock),
+	device_abcbus_card_interface(mconfig, *this),
+	m_maincpu(*this, Z80_TAG)
+{
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void databoard_4112_23_t::device_start()
+{
+}
+
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void databoard_4112_23_t::device_reset()
+{
+	m_cs = false;
+}
+
+
+
+//**************************************************************************
+//  ABC BUS INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+//  abcbus_cs -
+//-------------------------------------------------
+
+void databoard_4112_23_t::abcbus_cs(uint8_t data)
+{
+}
+
+
+//-------------------------------------------------
+//  abcbus_stat -
+//-------------------------------------------------
+
+uint8_t databoard_4112_23_t::abcbus_stat()
+{
+	uint8_t data = 0xff;
+
+	if (m_cs)
+	{
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  abcbus_inp -
+//-------------------------------------------------
+
+uint8_t databoard_4112_23_t::abcbus_inp()
+{
+	uint8_t data = 0xff;
+
+	if (m_cs)
+	{
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  abcbus_out -
+//-------------------------------------------------
+
+void databoard_4112_23_t::abcbus_out(uint8_t data)
+{
+	if (!m_cs) return;
+}
+
+
+//-------------------------------------------------
+//  abcbus_c1 -
+//-------------------------------------------------
+
+void databoard_4112_23_t::abcbus_c1(uint8_t data)
+{
+	if (m_cs)
+	{
+	}
+}
+
+
+//-------------------------------------------------
+//  abcbus_c3 -
+//-------------------------------------------------
+
+void databoard_4112_23_t::abcbus_c3(uint8_t data)
+{
+	if (m_cs)
+	{
+		m_maincpu->reset();
+	}
+}

src/devices/bus/abcbus/db411223.h

@@ -0,0 +1,60 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+    Databoard 4112-23 floppy disk controller emulation
+
+*********************************************************************/
+
+#ifndef MAME_BUS_ABCBUS_DATABOARD_4112_23_H
+#define MAME_BUS_ABCBUS_DATABOARD_4112_23_H
+
+#pragma once
+
+#include "abcbus.h"
+#include "cpu/z80/z80.h"
+
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> databoard_4112_23_t
+
+class databoard_4112_23_t :  public device_t,
+				   			 public device_abcbus_card_interface
+{
+public:
+	// construction/destruction
+	databoard_4112_23_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+	// device-level overrides
+	virtual void device_start() override;
+	virtual void device_reset() override;
+
+	// optional information overrides
+	virtual const tiny_rom_entry *device_rom_region() const override;
+	virtual void device_add_mconfig(machine_config &config) override;
+	virtual ioport_constructor device_input_ports() const override;
+
+	// device_abcbus_interface overrides
+	virtual void abcbus_cs(uint8_t data) override;
+	virtual uint8_t abcbus_inp() override;
+	virtual void abcbus_out(uint8_t data) override;
+	virtual uint8_t abcbus_stat() override;
+	virtual void abcbus_c1(uint8_t data) override;
+	virtual void abcbus_c3(uint8_t data) override;
+
+private:
+	required_device<cpu_device> m_maincpu;
+
+	bool m_cs;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(DATABOARD_4112_23, databoard_4112_23_t)
+
+#endif // MAME_BUS_ABCBUS_DATABOARD_4112_23_H