diff options
Diffstat (limited to 'src/devices/bus/nscsi/cdu415.cpp')
-rw-r--r-- | src/devices/bus/nscsi/cdu415.cpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/devices/bus/nscsi/cdu415.cpp b/src/devices/bus/nscsi/cdu415.cpp new file mode 100644 index 00000000000..a3b733b01d7 --- /dev/null +++ b/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; +} + |