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Diffstat (limited to 'src/devices/bus/nscsi/cdu75s.cpp')
-rw-r--r--src/devices/bus/nscsi/cdu75s.cpp78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/devices/bus/nscsi/cdu75s.cpp b/src/devices/bus/nscsi/cdu75s.cpp
new file mode 100644
index 00000000000..601b849f36a
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+++ b/src/devices/bus/nscsi/cdu75s.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/*******************************************************************************
+
+ Skeleton device for Sony/Apple CDU75S 4x cdrom reader
+
+*******************************************************************************/
+
+// Chips:
+// - IC101: CXA1841Q - RF signal analog amplifier
+// - IC102: CXA1182Q-Z - servo control
+// - IC103: CXD2510Q - CD DSP
+// - IC105: BU4053BCF - analog mux/demux
+// - IC201: H8/3032 - main mcu, 64k internal rom
+// - IC202: CXD1808AQ - cdrom decoder
+// - IC203: LH62800K-60 - DRAM 256k*8
+// - IC204: FAS204 2405027 - Fast Architecture SCSI 204, ncr 53c94 compatible
+// - IC205: CXD8532Q - ? probable logic/processing, suspect it handles the jumpers, some dma, that kind of stuff
+// - IC301: pcm-1715u - DAC
+// - IC401: BA6295AFP - 2 channel motor driver
+
+// irq1 on CXD1808AQ
+// irq3 on FAS204
+
+#include "emu.h"
+#include "cdu75s.h"
+
+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)
+ , nscsi_slot_card_interface(mconfig, *this, "fas204")
+ , m_mcu(*this, "mcu")
+ , m_scsi(*this, "fas204")
+ , m_rom(*this, "mcu")
+{
+}
+
+void cdu75s_device::device_start()
+{
+}
+
+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); // CXD8532Q
+ map(0x60005, 0x60005).r(FUNC(cdu75s_device::jumpers_r));
+
+ map(0xc0000, 0xc003f); // CXD1808AQ
+}
+
+void cdu75s_device::device_add_mconfig(machine_config &config)
+{
+ H83032(config, m_mcu, 33.8688_MHz_XTAL/2);
+ m_mcu->set_addrmap(AS_PROGRAM, &cdu75s_device::mem_map);
+
+ NCR53C94(config, m_scsi, 25'000'000); // FAS204, compatible
+}
+
+ROM_START(cdu75s)
+ ROM_REGION(0x20000, "mcu", 0)
+ ROM_LOAD("ic201.bin", 0x00000, 0x10000, CRC(8781ad49) SHA1(abdfb2561f2420a7f462e3bd5c8bd4d6eb0a9dfb))
+ ROM_LOAD("cdu-75s_1.0j_95.03.14_apple.bin", 0x10000, 0x10000, CRC(f4ad4d48) SHA1(7d674116304bc6948fe4a52d9859b4eb5d40b914))
+ROM_END
+
+const tiny_rom_entry *cdu75s_device::device_rom_region() const
+{
+ return ROM_NAME(cdu75s);
+}
+
+u8 cdu75s_device::jumpers_r()
+{
+ u32 jumpers_id = strtol(owner()->basetag(), nullptr, 16);
+ return (jumpers_id ^ 7) << 1;
+}
+