cdu415: Add skeleton

scripts/src/bus.lua

@@ -2505,6 +2505,8 @@ if (BUSES["NSCSI"]~=null) then
 		MAME_DIR .. "src/devices/bus/nscsi/cdrn820s.h",
 		MAME_DIR .. "src/devices/bus/nscsi/cdu75s.cpp",
 		MAME_DIR .. "src/devices/bus/nscsi/cdu75s.h",
+		MAME_DIR .. "src/devices/bus/nscsi/cdu415.cpp",
+		MAME_DIR .. "src/devices/bus/nscsi/cdu415.h",
 		MAME_DIR .. "src/devices/bus/nscsi/cw7501.cpp",
 		MAME_DIR .. "src/devices/bus/nscsi/cw7501.h",
 		MAME_DIR .. "src/devices/bus/nscsi/devices.cpp",

src/devices/bus/nscsi/cdu415.cpp

@@ -0,0 +1,72 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/*******************************************************************************
+
+    Skeleton device for Sony CDU415 cdrom reader
+
+*******************************************************************************/
+
+// Chips:
+// - IC201: H8/3032        - main mcu, 64k internal rom
+// - IC202: CXD1804AR      - cdrom decoder and scsi interface
+// - IC203: V53C16126HK40  - DRAM 128k*16
+// - IC205: BU6243K        - ?
+// - IC207: AM28F512       - Firmware
+
+#include "emu.h"
+#include "cdu415.h"
+
+DEFINE_DEVICE_TYPE(CDU415, cdu415_device, "cdu415", "Sony CDU415 CD-R")
+
+cdu415_device::cdu415_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+	: device_t(mconfig, CDU415, tag, owner, clock)
+	, nscsi_slot_card_interface(mconfig, *this, "cxd1804ar")
+	, m_mcu(*this, "mcu")
+	, m_scsi(*this, "cxd1804ar")
+	, m_rom(*this, "mcu")
+{
+}
+
+void cdu415_device::device_start()
+{
+	// The reset vector is the only obvious one there.
+	m_rom[0] = m_rom[0x8000];
+	m_rom[1] = m_rom[0x8001];
+}
+
+void cdu415_device::mem_map(address_map &map)
+{
+	map(0x00000, 0x0ffff).rom().region("mcu", 0);
+	map(0x20000, 0x2ffff).rom().region("mcu", 0x10000);
+}
+
+void cdu415_device::io_map(address_map &map)
+{
+}
+
+void cdu415_device::device_add_mconfig(machine_config &config)
+{
+	H83032(config, m_mcu, 10000000);
+	m_mcu->set_addrmap(AS_PROGRAM, &cdu415_device::mem_map);
+	m_mcu->set_addrmap(AS_IO, &cdu415_device::io_map);
+
+	NCR53C94(config, m_scsi, 25'000'000); // Temporary placeholder
+}
+
+ROM_START(cdu415)
+	ROM_REGION(0x20000, "mcu", 0)
+	ROM_FILL(0x00000, 0x10000, 0x00) // Internal rom not yet dumped
+	ROM_LOAD("cdu415.bin", 0x10000, 0x10000, CRC(9873b898) SHA1(72d0b192efc32f7c8985dd96df3e346c57a236e7))
+ROM_END
+
+const tiny_rom_entry *cdu415_device::device_rom_region() const
+{
+	return ROM_NAME(cdu415);
+}
+
+u8 cdu415_device::jumpers_r()
+{
+	u32 jumpers_id = strtol(owner()->basetag(), nullptr, 16);
+	return (jumpers_id ^ 7) << 1;
+}
+

src/devices/bus/nscsi/cdu415.h

@@ -0,0 +1,38 @@
+// license:BSD-3-Clause
+// copyright-holders:O. Galibert
+
+#ifndef MAME_BUS_NSCSI_CDU415_H
+#define MAME_BUS_NSCSI_CDU415_H
+
+#pragma once
+
+#include "machine/nscsi_bus.h"
+#include "cpu/h8/h83032.h"
+#include "machine/ncr5390.h"
+
+class cdu415_device : public device_t, public nscsi_slot_card_interface
+{
+public:
+	cdu415_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+	static constexpr feature_type unemulated_features() { return feature::DISK; }
+
+protected:
+	virtual void device_start() override;
+	virtual void device_add_mconfig(machine_config &config) override;
+	virtual const tiny_rom_entry *device_rom_region() const override;
+
+private:
+	void mem_map(address_map &map);
+	void io_map(address_map &map);
+
+	required_device<h83032_device> m_mcu;
+	required_device<ncr53c94_device> m_scsi;
+	required_region_ptr<u16> m_rom;
+
+	u8 jumpers_r();
+};
+
+DECLARE_DEVICE_TYPE(CDU415, cdu415_device)
+
+#endif // MAME_BUS_NSCSI_CDU415_H

src/devices/bus/nscsi/cdu75s.cpp

@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:AJR
+// copyright-holders:Olivier Galibert
 /*******************************************************************************
 
     Skeleton device for Sony/Apple CDU75S 2x cdrom reader
@@ -7,7 +7,7 @@
 *******************************************************************************/
 
 // Chips:
-// - IC101: CXA1841Q       - ? probably something related to audio
+// - IC101: CXA1841Q       - RF signal analog amplifier
 // - IC102: CXA1182Q-Z     - servo control
 // - IC103: CXD2510Q       - CD DSP
 // - IC105: BU4053BCF      - analog mux/demux
@@ -22,7 +22,7 @@
 #include "emu.h"
 #include "cdu75s.h"
 
-DEFINE_DEVICE_TYPE(CDU75S, cdu75s_device, "cdu75s", "Philips CDU75S CD-R")
+DEFINE_DEVICE_TYPE(CDU75S, cdu75s_device, "cdu75s", "Sony/Apple CDU75S CD-R")
 
 cdu75s_device::cdu75s_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
 	: device_t(mconfig, CDU75S, tag, owner, clock)
@@ -64,7 +64,7 @@ void cdu75s_device::mem_map(address_map &map)
 	map(0x00000, 0x1ffff).rom().region("mcu", 0);
 	map(0x40000, 0x4000f).m(m_scsi, FUNC(ncr53c94_device::map));
 
-	map(0x60000, 0x60007); // General i/o?
+	map(0x60000, 0x60007); // CXD8532Q
 	map(0x60005, 0x60005).r(FUNC(cdu75s_device::jumpers_r));
 
 	map(0xc0000, 0xc003f); // CXD1808AQ

src/devices/bus/nscsi/devices.cpp

@@ -8,6 +8,7 @@
 #include "bus/nscsi/cdd2000.h"
 #include "bus/nscsi/cdrn820s.h"
 #include "bus/nscsi/cdu75s.h"
+#include "bus/nscsi/cdu415.h"
 #include "bus/nscsi/cw7501.h"
 #include "bus/nscsi/hd.h"
 #include "bus/nscsi/s1410.h"
@@ -23,6 +24,7 @@ void default_scsi_devices(device_slot_interface &device)
 	device.option_add("cdrn820s", CDRN820S);
 	device.option_add("cdd2000", CDD2000);
 	device.option_add("cdu75s", CDU75S);
+	device.option_add("cdu415", CDU415);
 	device.option_add("smoc501", SMOC501);
 	device.option_add("aplcd150", APPLECD150);
 };