From b663c4bc50bb782f32f4ca6a4667f71347d3daae Mon Sep 17 00:00:00 2001 From: Olivier Galibert Date: Thu, 8 Apr 2021 09:13:28 +0200 Subject: cdu75s: start the driver --- scripts/src/bus.lua | 2 + src/devices/bus/nscsi/cdu75s.cpp | 88 +++++++++++++++++++++++++++++++++++++++ src/devices/bus/nscsi/cdu75s.h | 38 +++++++++++++++++ src/devices/bus/nscsi/devices.cpp | 2 + 4 files changed, 130 insertions(+) create mode 100644 src/devices/bus/nscsi/cdu75s.cpp create mode 100644 src/devices/bus/nscsi/cdu75s.h diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua index 1540f2c8d54..e30a51e2c2e 100644 --- a/scripts/src/bus.lua +++ b/scripts/src/bus.lua @@ -2503,6 +2503,8 @@ if (BUSES["NSCSI"]~=null) then MAME_DIR .. "src/devices/bus/nscsi/cdd2000.h", MAME_DIR .. "src/devices/bus/nscsi/cdrn820s.cpp", 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/cw7501.cpp", MAME_DIR .. "src/devices/bus/nscsi/cw7501.h", MAME_DIR .. "src/devices/bus/nscsi/devices.cpp", diff --git a/src/devices/bus/nscsi/cdu75s.cpp b/src/devices/bus/nscsi/cdu75s.cpp new file mode 100644 index 00000000000..d5a3a0b0863 --- /dev/null +++ b/src/devices/bus/nscsi/cdu75s.cpp @@ -0,0 +1,88 @@ +// license:BSD-3-Clause +// copyright-holders:AJR +/******************************************************************************* + + Skeleton device for Sony/Apple CDU75S 2x cdrom reader + +*******************************************************************************/ + +// Chips: +// - IC101: CXA1841Q - ? probably something related to audio +// - 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 +// - IC301: pcm-1715u - DAC +// - IC401: BA6295AFP - 2 channel motor driver + +#include "emu.h" +#include "cdu75s.h" + +DEFINE_DEVICE_TYPE(CDU75S, cdu75s_device, "cdu75s", "Philips 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() +{ + // We're getting interesting results with a basic vectors map, + // e.g. vector points to 0x10000+4*n, where there's a jmp to + // the final destination + + for(u32 i = 0; i != 64; i++) { + m_rom[i*2] = 1; + m_rom[i*2+1] = i*4; + } +} + +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(0x60005, 0x60005).r(FUNC(cdu75s_device::jumpers_r)); + + map(0xc0000, 0xc003f); // CXD1808AQ +} + +void cdu75s_device::io_map(address_map &map) +{ +} + +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); + m_mcu->set_addrmap(AS_IO, &cdu75s_device::io_map); + + NCR53C94(config, m_scsi, 25'000'000); // FAS204, compatible +} + +ROM_START(cdu75s) + ROM_REGION(0x20000, "mcu", 0) + ROM_FILL(0x00000, 0x10000, 0x00) // Internal rom not yet dumped + 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; +} + diff --git a/src/devices/bus/nscsi/cdu75s.h b/src/devices/bus/nscsi/cdu75s.h new file mode 100644 index 00000000000..b57550f9033 --- /dev/null +++ b/src/devices/bus/nscsi/cdu75s.h @@ -0,0 +1,38 @@ +// license:BSD-3-Clause +// copyright-holders:O. Galibert + +#ifndef MAME_BUS_NSCSI_CDU75S_H +#define MAME_BUS_NSCSI_CDU75S_H + +#pragma once + +#include "machine/nscsi_bus.h" +#include "cpu/h8/h83032.h" +#include "machine/ncr5390.h" + +class cdu75s_device : public device_t, public nscsi_slot_card_interface +{ +public: + cdu75s_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 m_mcu; + required_device m_scsi; + required_region_ptr m_rom; + + u8 jumpers_r(); +}; + +DECLARE_DEVICE_TYPE(CDU75S, cdu75s_device) + +#endif // MAME_BUS_NSCSI_CDU75S_H diff --git a/src/devices/bus/nscsi/devices.cpp b/src/devices/bus/nscsi/devices.cpp index cc44339902a..98d6db0553a 100644 --- a/src/devices/bus/nscsi/devices.cpp +++ b/src/devices/bus/nscsi/devices.cpp @@ -7,6 +7,7 @@ #include "bus/nscsi/cd.h" #include "bus/nscsi/cdd2000.h" #include "bus/nscsi/cdrn820s.h" +#include "bus/nscsi/cdu75s.h" #include "bus/nscsi/cw7501.h" #include "bus/nscsi/hd.h" #include "bus/nscsi/s1410.h" @@ -21,6 +22,7 @@ void default_scsi_devices(device_slot_interface &device) device.option_add("cdr4210", CDR4210); device.option_add("cdrn820s", CDRN820S); device.option_add("cdd2000", CDD2000); + device.option_add("cdu75s", CDU75S); device.option_add("smoc501", SMOC501); device.option_add("aplcd150", APPLECD150); }; -- cgit v1.2.3