nec_p72: add skeleton driver for NEC PinWriter P72 dot-matrix printer

scripts/src/bus.lua

@@ -1494,6 +1494,8 @@ if (BUSES["CENTRONICS"]~=null) then
 		MAME_DIR .. "src/devices/bus/centronics/epson_lx800.h",
 		MAME_DIR .. "src/devices/bus/centronics/epson_lx810l.c",
 		MAME_DIR .. "src/devices/bus/centronics/epson_lx810l.h",
+		MAME_DIR .. "src/devices/bus/centronics/nec_p72.c",
+		MAME_DIR .. "src/devices/bus/centronics/nec_p72.h",
 		MAME_DIR .. "src/devices/bus/centronics/printer.c",
 		MAME_DIR .. "src/devices/bus/centronics/printer.h",
 		MAME_DIR .. "src/devices/bus/centronics/digiblst.c",

src/devices/bus/centronics/ctronics.c

@@ -117,6 +117,7 @@ device_centronics_peripheral_interface::~device_centronics_peripheral_interface(
 #include "epson_ex800.h"
 #include "epson_lx800.h"
 #include "epson_lx810l.h"
+#include "nec_p72.h"
 #include "printer.h"
 #include "covox.h"
 
@@ -126,6 +127,7 @@ SLOT_INTERFACE_START(centronics_devices)
 	SLOT_INTERFACE("lx800", EPSON_LX800)
 	SLOT_INTERFACE("lx810l", EPSON_LX810L)
 	SLOT_INTERFACE("ap2000", EPSON_AP2000)
+	SLOT_INTERFACE("p72", NEC_P72)
 	SLOT_INTERFACE("printer", CENTRONICS_PRINTER)
 	SLOT_INTERFACE("covox", CENTRONICS_COVOX)
 	SLOT_INTERFACE("covox_stereo", CENTRONICS_COVOX_STEREO)

src/devices/bus/centronics/nec_p72.c

@@ -0,0 +1,94 @@
+// license:BSD-3-Clause
+// copyright-holders:Ramiro Polla
+
+#include "nec_p72.h"
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type NEC_P72 = &device_creator<nec_p72_t>;
+
+
+//-------------------------------------------------
+//  ROM( p72 )
+//-------------------------------------------------
+
+ROM_START( p72 )
+	ROM_REGION(0x100000, "maincpu", 0)
+	ROM_LOAD("p72.2c", 0x000000, 0x100000, CRC(2bc6846f) SHA1(10430f1d3b73ad413d77053515d9d53831a1341b))
+ROM_END
+
+
+//-------------------------------------------------
+//  rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *nec_p72_t::device_rom_region() const
+{
+	return ROM_NAME( p72 );
+}
+
+
+//-------------------------------------------------
+//  ADDRESS_MAP( p72_mem )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( p72_mem, AS_PROGRAM, 8, nec_p72_t )
+	AM_RANGE(0x000000, 0x0fffff) AM_ROM /* 1Mbit firmware */
+	AM_RANGE(0x100000, 0x1fffff) AM_RAM /* 1Mbit external RAM */ /* TODO might be 2x1Mbit */
+ADDRESS_MAP_END
+
+
+//-------------------------------------------------
+//  MACHINE_DRIVER( nec_p72 )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( nec_p72 )
+	/* basic machine hardware */
+	MCFG_CPU_ADD("maincpu", V33, XTAL_16MHz/2) /* TODO it's actually a V40 */
+	MCFG_CPU_PROGRAM_MAP(p72_mem)
+
+MACHINE_CONFIG_END
+
+//-------------------------------------------------
+//  machine_config_additions - device-specific
+//  machine configurations
+//-------------------------------------------------
+
+machine_config_constructor nec_p72_t::device_mconfig_additions() const
+{
+	return MACHINE_CONFIG_NAME( nec_p72 );
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void nec_p72_t::device_start()
+{
+}
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  nec_p72_t - constructor
+//-------------------------------------------------
+
+nec_p72_t::nec_p72_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+	device_t(mconfig, NEC_P72, "NEC PinWrite P72", tag, owner, clock, "p72", __FILE__),
+	device_centronics_peripheral_interface(mconfig, *this),
+	m_maincpu(*this, "maincpu")
+{
+}
+
+nec_p72_t::nec_p72_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) :
+	device_t(mconfig, type, name, tag, owner, clock, shortname, __FILE__),
+	device_centronics_peripheral_interface(mconfig, *this),
+	m_maincpu(*this, "maincpu")
+{
+}

src/devices/bus/centronics/nec_p72.h

@@ -0,0 +1,45 @@
+// license:BSD-3-Clause
+// copyright-holders:Ramiro Polla
+
+#pragma once
+
+#ifndef __NEC_P72__
+#define __NEC_P72__
+
+#include "emu.h"
+#include "ctronics.h"
+#include "cpu/nec/nec.h"
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> nec_p72_t
+
+class nec_p72_t : public device_t,
+                  public device_centronics_peripheral_interface
+{
+public:
+	// construction/destruction
+	nec_p72_t(const machine_config &mconfig, const char *tag,
+	          device_t *owner, UINT32 clock);
+	nec_p72_t(const machine_config &mconfig, device_type type,
+	          const char *name, const char *tag, device_t *owner,
+	          UINT32 clock, const char *shortname, const char *source);
+
+	// optional information overrides
+	virtual const rom_entry *device_rom_region() const;
+	virtual machine_config_constructor device_mconfig_additions() const;
+
+protected:
+	// device-level overrides
+	virtual void device_start();
+
+private:
+	required_device<cpu_device> m_maincpu;
+};
+
+// device type definition
+extern const device_type NEC_P72;
+
+#endif