// license:BSD-3-Clause // copyright-holders:AJR /*************************************************************************** BusTek/BusLogic BT-54x series PC/AT SCSI host adapters The earlier version of the BT-542B, with BusTek labels, has a NCR 86C05 bus controller where a later version has the 80C20 ASIC instead. It is believed that these chips are largely compatible with each other, as are the NCR 53CF94 and Emulex FAS216 SCSI controllers. 2.41/2.21 is the last BIOS version compatible with revisions A-G of the BT-542B. ***************************************************************************/ #include "emu.h" #include "bt54x.h" #include "bus/nscsi/devices.h" #include "machine/ncr5390.h" //#include "machine/ncr86c05.h" DEFINE_DEVICE_TYPE(BT542B, bt542b_device, "bt542b", "BusTek BT-542B SCSI Host Adapter") // Rev. G or earlier DEFINE_DEVICE_TYPE(BT542BH, bt542bh_device, "bt542bh", "BusLogic BT-542B SCSI Host Adapter (Rev. H)") DEFINE_DEVICE_TYPE(BT545S, bt545s_device, "bt545s", "BusLogic BT-545S Fast SCSI Host Adapter") bt54x_device::bt54x_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, type, tag, owner, clock) , device_isa16_card_interface(mconfig, *this) , m_mpu(*this, "mpu") , m_fdc(*this, "fdc") , m_bios(*this, "bios") { } bt542b_device::bt542b_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : bt54x_device(mconfig, BT542B, tag, owner, clock) { } bt542bh_device::bt542bh_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : bt54x_device(mconfig, BT542BH, tag, owner, clock) { } bt545s_device::bt545s_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : bt54x_device(mconfig, BT545S, tag, owner, clock) { } void bt54x_device::device_start() { } u8 bt54x_device::local_status_r() { return 0; } void bt54x_device::local_map(address_map &map) { map(0x00000, 0x01fff).ram(); //map(0x02000, 0x0201f).rw("busintf", FUNC(ncr86c05_device::local_read), FUNC(ncr86c05_device::local_write)); map(0x02080, 0x0208f).m("scsi:7:scsic", FUNC(ncr53cf94_device::map)); map(0x02180, 0x02180).r(FUNC(bt54x_device::local_status_r)); map(0xf8000, 0xfffff).rom().region("mpu", 0); } void bt54x_device::asc_config(device_t *device) { ncr53c94_device &asc = downcast(*device); asc.set_clock(25_MHz_XTAL); // not verified; perhaps selectable? (40 MHz XTAL also on board) asc.irq_handler_cb().set(m_mpu, FUNC(i80188_cpu_device::int0_w)); //asc.drq_handler_cb().set("busintf", FUNC(ncr86c05_device::dma_req_w)); } void bt54x_device::fsc_config(device_t *device) { ncr53cf94_device &fsc = downcast(*device); fsc.set_clock(40_MHz_XTAL); fsc.irq_handler_cb().set(m_mpu, FUNC(i80188_cpu_device::int0_w)); // mostly polled on BT-545S //fsc.drq_handler_cb().set("busintf", FUNC(ncr86c05_device::dma_req_w)); } void bt54x_device::fsc_base(machine_config &config) { //ncr86c05_device &busintf(NCR86C05(config, "busintf", 0)); //busintf.mint_callback().set(m_mpu, FUNC(i80188_cpu_device::int1_w)); //busintf.dma_ack_callback().set("scsi:7:scsic", FUNC(ncr53cf94_device::dma_w)); NSCSI_BUS(config, "scsi"); NSCSI_CONNECTOR(config, "scsi:0", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:1", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:2", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:3", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:4", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:5", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:6", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:7", default_scsi_devices, "scsic", true) .option_add_internal("scsic", NCR53CF94) // FAS216 .machine_config([this] (device_t *device) { fsc_config(device); }); } void bt542b_device::device_add_mconfig(machine_config &config) { I80188(config, m_mpu, 16_MHz_XTAL); m_mpu->set_addrmap(AS_PROGRAM, &bt542b_device::local_map); //ncr86c05_device &busintf(NCR86C05(config, "busintf", 0)); //busintf.mint_callback().set(m_mpu, FUNC(i80188_cpu_device::int1_w)); //busintf.dma_ack_callback().set("scsi:7:scsic", FUNC(ncr53c94_device::dma_w)); NSCSI_BUS(config, "scsi"); NSCSI_CONNECTOR(config, "scsi:0", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:1", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:2", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:3", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:4", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:5", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:6", default_scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsi:7", default_scsi_devices, "scsic", true) .option_add_internal("scsic", NCR53C94) .machine_config([this] (device_t *device) { asc_config(device); }); DP8473(config, m_fdc, 24_MHz_XTAL); } void bt542bh_device::device_add_mconfig(machine_config &config) { I80188(config, m_mpu, 40_MHz_XTAL / 2); // clock guessed m_mpu->set_addrmap(AS_PROGRAM, &bt542bh_device::local_map); fsc_base(config); DP8473(config, m_fdc, 24_MHz_XTAL); } void bt545s_device::device_add_mconfig(machine_config &config) { I80188(config, m_mpu, 40_MHz_XTAL / 2); // SAB80188-1-N; clock guessed m_mpu->set_addrmap(AS_PROGRAM, &bt545s_device::local_map); fsc_base(config); PC8477A(config, m_fdc, 24_MHz_XTAL); // actually PC8477BV } ROM_START(bt542b) ROM_REGION(0x4000, "bios", 0) // "(C) Copyright 1991 BIOS Version 2.41" ROM_LOAD("1000006-2.41_bustek.u15", 0x0000, 0x4000, CRC(5eb00d0f) SHA1(74a8bbae1c2b42f0c605b0ac98660f1e16ac5c4e)) ROM_REGION(0x8000, "mpu", 0) // "(C) Copyright 1991 BusTek Corporation 542B 91/12/14" ROM_LOAD("1000005-2.21_bustek.u2", 0x0000, 0x8000, CRC(c2c66653) SHA1(054ba1ea71b2aaab31ab9dd5aca955d861f5333b)) ROM_END ROM_START(bt542bh) ROM_REGION(0x8000, "bios", 0) // "(C) Copyright 1992 BIOS Version 4.70M" ROM_LOAD("5000006-4.70_buslogic.u15", 0x0000, 0x8000, CRC(f5a5e116) SHA1(d7b73015532838dc694edf24308ebbab6f4dd5bb)) ROM_REGION(0x8000, "mpu", 0) // "(C) Copyright 1992 BusLogic Inc. 542BH93/05/23" ROM_LOAD("5000005-3.35_buslogic.u2", 0x0000, 0x8000, CRC(181966c3) SHA1(b9b327d50cd13f3e5b5b53892b18f233aff065b7)) ROM_END ROM_START(bt545s) ROM_REGION(0x4000, "bios", 0) // "(C) Copyright 1992 BIOS Version 4.50" ROM_LOAD("u15_27128_5002026-4.50.bin", 0x0000, 0x4000, CRC(1bd3247b) SHA1(9d46a99f4b3057e94ef422f387218de2c4553c1a)) ROM_REGION(0x8000, "mpu", 0) // "(C) Copyright 1992 BusLogic Inc. 542BH92/10/05" ROM_LOAD("u2_27256_5002005-3.31.bin", 0x0000, 0x8000, CRC(20473714) SHA1(797a8dba182049949f7a5c14d8bef4b4e908305b)) ROM_END const tiny_rom_entry *bt542b_device::device_rom_region() const { return ROM_NAME(bt542b); } const tiny_rom_entry *bt542bh_device::device_rom_region() const { return ROM_NAME(bt542bh); } const tiny_rom_entry *bt545s_device::device_rom_region() const { return ROM_NAME(bt545s); }