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Add skeleton BusLogic BT-545S SCSI host adapter device [modem7, minuszerodegrees.net]

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This commit is contained in:
AJR 2019-03-13 00:34:21 -04:00
parent d86f02ac45
commit 8bb26b3bc0
6 changed files with 173 additions and 4 deletions
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2
scripts/src/bus.lua
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@ -1300,6 +1300,8 @@ if (BUSES["ISA"]~=null) then
MAME_DIR .. "src/devices/bus/isa/lbaenhancer.h",
MAME_DIR .. "src/devices/bus/isa/np600.cpp",
MAME_DIR .. "src/devices/bus/isa/np600.h",
MAME_DIR .. "src/devices/bus/isa/bt54x.cpp",
MAME_DIR .. "src/devices/bus/isa/bt54x.h",
}
end

102
src/devices/bus/isa/bt54x.cpp Normal file
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@ -0,0 +1,102 @@
// 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.
***************************************************************************/
#include "emu.h"
#include "bt54x.h"
#include "machine/ncr5390.h"
//#include "machine/ncr86c05.h"
#include "machine/nscsi_cd.h"
#include "machine/nscsi_hd.h"
DEFINE_DEVICE_TYPE(BT545S, bt545s_device, "bt545s", "BusLogic BT-545S Fast SCSI Host Adapter")
bt545s_device::bt545s_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, BT545S, tag, owner, clock)
, device_isa16_card_interface(mconfig, *this)
, m_mpu(*this, "mpu")
, m_fdc(*this, "fdc")
, m_bios(*this, "bios")
{
}
void bt545s_device::device_start()
{
}
u8 bt545s_device::local_status_r()
{
return 0;
}
void bt545s_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:fsc", FUNC(ncr53cf94_device::map));
map(0x02180, 0x02180).r(FUNC(bt545s_device::local_status_r));
map(0xf8000, 0xfffff).rom().region("mpu", 0);
}
static void fast_scsi_devices(device_slot_interface &device)
{
// FIXME: these device options are placeholders
device.option_add("cdrom", NSCSI_CDROM);
device.option_add("harddisk", NSCSI_HARDDISK);
device.option_add_internal("fsc", NCR53CF94); // FAS216
}
void bt545s_device::fsc_config(device_t *device)
{
ncr53cf94_device &fsc = downcast<ncr53cf94_device &>(*device);
fsc.set_clock(40_MHz_XTAL);
fsc.irq_handler_cb().set(m_mpu, FUNC(i80188_cpu_device::int0_w)); // mostly polled
//fsc.drq_handler_cb().set("busintf", FUNC(ncr86c05_device::dma_req_w));
}
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);
//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:fsc", FUNC(ncr53cf94_device::dma_w));
NSCSI_BUS(config, "scsi");
NSCSI_CONNECTOR(config, "scsi:0", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:1", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:2", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:3", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:4", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:5", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:6", fast_scsi_devices, nullptr);
NSCSI_CONNECTOR(config, "scsi:7", fast_scsi_devices, "fsc", true).set_option_machine_config("fsc", [this] (device_t *device) { fsc_config(device); });
PC8477A(config, m_fdc, 24_MHz_XTAL); // actually PC8477BV
}
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 *bt545s_device::device_rom_region() const
{
return ROM_NAME(bt545s);
}

43
src/devices/bus/isa/bt54x.h Normal file
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@ -0,0 +1,43 @@
// license:BSD-3-Clause
// copyright-holders:AJR
/***************************************************************************
BusTek/BusLogic BT-54x series PC/AT SCSI host adapters
***************************************************************************/
#ifndef MAME_BUS_ISA_BT54X_H
#define MAME_BUS_ISA_BT54X_H
#pragma once
#include "isa.h"
#include "cpu/i86/i186.h"
#include "machine/upd765.h"
class bt545s_device : public device_t, public device_isa16_card_interface
{
public:
bt545s_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_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_start() override;
private:
u8 local_status_r();
void local_map(address_map &map);
void fsc_config(device_t *device);
required_device<i80188_cpu_device> m_mpu;
required_device<upd765_family_device> m_fdc;
required_region_ptr<u8> m_bios;
};
DECLARE_DEVICE_TYPE(BT545S, bt545s_device)
#endif // MAME_BUS_ISA_BT54X_H

2
src/devices/bus/isa/isa_cards.cpp
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@ -37,6 +37,7 @@
#include "mcd.h"
#include "lbaenhancer.h"
#include "cl_sh260.h"
#include "bt54x.h"
// sound
#include "adlib.h"
@ -173,4 +174,5 @@ void pc_isa16_cards(device_slot_interface &device)
device.option_add("wd1007a", WD1007A);
device.option_add("ev346", EV346);
device.option_add("jc1310", JC1310);
device.option_add("bt545s", BT545S);
}

19
src/devices/machine/ncr5390.cpp
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@ -20,9 +20,10 @@
#define DELAY_HACK
DEFINE_DEVICE_TYPE(NCR5390, ncr5390_device, "ncr5390", "NCR 5390 SCSI")
DEFINE_DEVICE_TYPE(NCR53C90A, ncr53c90a_device, "ncr53c90a", "NCR 53C90A SCSI")
DEFINE_DEVICE_TYPE(NCR53C94, ncr53c94_device, "ncr53c94", "NCR 53C94 SCSI")
DEFINE_DEVICE_TYPE(NCR5390, ncr5390_device, "ncr5390", "NCR 5390 SCSI Controller")
DEFINE_DEVICE_TYPE(NCR53C90A, ncr53c90a_device, "ncr53c90a", "NCR 53C90A Advanced SCSI Controller")
DEFINE_DEVICE_TYPE(NCR53C94, ncr53c94_device, "ncr53c94", "NCR 53C94 Advanced SCSI Controller")
DEFINE_DEVICE_TYPE(NCR53CF94, ncr53cf94_device, "ncr53cf94", "NCR 53CF94-2 Fast SCSI Controller") // TODO: differences not emulated
void ncr5390_device::map(address_map &map)
{
@ -147,12 +148,22 @@ ncr53c90a_device::ncr53c90a_device(const machine_config &mconfig, const char *ta
}
ncr53c94_device::ncr53c94_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: ncr53c90a_device(mconfig, NCR53C94, tag, owner, clock)
: ncr53c94_device(mconfig, NCR53C94, tag, owner, clock)
{
}
ncr53c94_device::ncr53c94_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
: ncr53c90a_device(mconfig, type, tag, owner, clock)
, config3(0)
, m_busmd(BUSMD_0)
{
}
ncr53cf94_device::ncr53cf94_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: ncr53c94_device(mconfig, NCR53CF94, tag, owner, clock)
{
}
void ncr5390_device::device_start()
{
nscsi_device::device_start();

9
src/devices/machine/ncr5390.h
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@ -307,6 +307,8 @@ public:
void dma16_w(u16 data);
protected:
ncr53c94_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
enum conf3_mask : u8
{
BS8 = 0x01, // burst size 8
@ -324,8 +326,15 @@ private:
busmd_t m_busmd;
};
class ncr53cf94_device : public ncr53c94_device
{
public:
ncr53cf94_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
};
DECLARE_DEVICE_TYPE(NCR5390, ncr5390_device)
DECLARE_DEVICE_TYPE(NCR53C90A, ncr53c90a_device)
DECLARE_DEVICE_TYPE(NCR53C94, ncr53c94_device)
DECLARE_DEVICE_TYPE(NCR53CF94, ncr53cf94_device)
#endif // MAME_MACHINE_NCR5390_H