/
aha174x.cpp
182 lines (145 loc) · 7.29 KB
/
aha174x.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
// license:BSD-3-Clause
// copyright-holders:AJR
/***************************************************************************
Adaptec AHA-1740/44 and AHA-1740A/42A Fast SCSI host adapters
These are actually EISA cards, though they also have a compatibility
mode that provides an interface like the older ISA AHA-154X series.
On the AHA-1740 and AHA-1744, the HPC microcode is stored in an EEPROM
(of unknown type), allowing it to be reprogrammed by the host. This is
not possible on the AHA-1740A and AHA-1744A, which use a conventional
27C256 EPROM for the microcode. In both cases the HPC copies the code
to and then executes it out of RAM.
Though the AHA-1740 and AHA-1740A have different board layouts, they
share the following ICs:
AIC-565 Bus Auxiliary Interface Chip
AIC-575 EISA Configuration Chip
AIC-4600 HPC (HPC46003V20)
AIC-6251A SCSI Interface and Protocol Chip
IDT7201 or QS7201 512x9 FIFO (2 on board)
Intel 82355 Bus Master Interface Controller
AHA-1742A is the same as AHA-1740A, only with the FDC populated.
AHA-1744 uses the same layout as AHA-1740, but populates the area
around the SCSI port with DS36F95J differential drivers.
***************************************************************************/
#include "emu.h"
#include "aha174x.h"
#include "bus/nscsi/devices.h"
#include "machine/aic6250.h"
#include "machine/i82355.h"
#include "machine/nscsi_bus.h"
DEFINE_DEVICE_TYPE(AHA1740, aha1740_device, "aha1740", "AHA-1740 Fast SCSI Host Adapter")
DEFINE_DEVICE_TYPE(AHA1742A, aha1742a_device, "aha1742a", "AHA-1742A Fast SCSI Host Adapter")
aha174x_device::aha174x_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_hpc(*this, "hpc")
, m_busaic(*this, "busaic")
, m_fifo(*this, "fifo%u", 0U)
, m_bios(*this, "bios")
{
}
aha1740_device::aha1740_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: aha174x_device(mconfig, AHA1740, tag, owner, clock)
{
}
aha1742a_device::aha1742a_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: aha174x_device(mconfig, AHA1742A, tag, owner, clock)
, m_fdc(*this, "fdc")
{
}
void aha174x_device::device_start()
{
}
void aha174x_device::hpc_map(address_map &map)
{
map(0x2000, 0x2003).rw(m_busaic, FUNC(aic565_device::local_r), FUNC(aic565_device::local_w));
map(0x4000, 0x4002).rw("bmic", FUNC(i82355_device::local_r), FUNC(i82355_device::local_w));
map(0x5000, 0x500f).m("scsi:7:scsic", FUNC(aic6251a_device::map));
map(0x7000, 0x7000).w(m_fifo[0], FUNC(fifo7200_device::data_byte_w));
map(0x7001, 0x7001).w(m_fifo[1], FUNC(fifo7200_device::data_byte_w));
map(0x7002, 0x7002).r(m_fifo[0], FUNC(fifo7200_device::data_byte_r));
map(0x7003, 0x7003).r(m_fifo[1], FUNC(fifo7200_device::data_byte_r));
map(0x8000, 0xffff).rom().region("mcode", 0);
}
void aha174x_device::scsic_config(device_t *device)
{
device->set_clock(40_MHz_XTAL / 2); // divider not verified
}
void aha1740_device::device_add_mconfig(machine_config &config)
{
HPC46003(config, m_hpc, 40_MHz_XTAL / 2);
m_hpc->set_addrmap(AS_PROGRAM, &aha1740_device::hpc_map);
AIC565(config, m_busaic);
m_busaic->hrst_callback().set_inputline(m_hpc, INPUT_LINE_RESET);
//m_busaic->srst_callback().set_inputline(m_hpc, hpc_device::EI_LINE);
I82355(config, "bmic", 0);
//bmic.lint_callback().set_inputline(m_hpc, hpc_device::I2_LINE);
IDT7201(config, m_fifo[0]);
IDT7201(config, m_fifo[1]);
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").option_set("scsic", AIC6251A)
.machine_config([this] (device_t *device) { scsic_config(device); });
}
void aha1742a_device::device_add_mconfig(machine_config &config)
{
HPC46003(config, m_hpc, 40_MHz_XTAL / 2);
m_hpc->set_addrmap(AS_PROGRAM, &aha1742a_device::hpc_map);
AIC565(config, m_busaic);
m_busaic->hrst_callback().set_inputline(m_hpc, INPUT_LINE_RESET);
//m_busaic->srst_callback().set_inputline(m_hpc, hpc_device::EI_LINE);
I82355(config, "bmic", 0);
//bmic.lint_callback().set_inputline(m_hpc, hpc_device::I2_LINE);
IDT7201(config, m_fifo[0]);
IDT7201(config, m_fifo[1]);
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").option_set("scsic", AIC6251A)
.machine_config([this] (device_t *device) { scsic_config(device); });
N82077AA(config, m_fdc, 24_MHz_XTAL);
}
ROM_START(aha1740)
ROM_REGION(0x4000, "bios", 0)
ROM_LOAD("b_dc00.bin", 0x0000, 0x4000, CRC(056d75ec) SHA1(8ca143adfc7d20ad5d49f14dedabc8276454bf9e))
ROM_REGION16_LE(0x8000, "mcode", 0)
ROM_SYSTEM_BIOS(0, "v140st", "BIOS v1.40 (Standard Mode)")
ROMX_LOAD("standard.bin", 0x0000, 0x8000, CRC(8c15c6a2) SHA1(77e15b0244e3a814f53f957270e6474a8a839955), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "v140en", "BIOS v1.40 (Enhanced Mode)")
ROMX_LOAD("enhanced.bin", 0x0000, 0x8000, CRC(84b3df89) SHA1(a718c3ea5443a609b4b20bfe48be18193737ad25), ROM_BIOS(1))
// Adaptec's help file claims that "the EEPROM on the board can hold firmware for both modes simultaneously."
// The AHA-174XA firmware images obviously have this, but the files provided here do not agree.
ROM_END
ROM_START(aha1742a)
ROM_REGION(0x4000, "bios", 0)
ROM_DEFAULT_BIOS("v140")
ROM_SYSTEM_BIOS(0, "v134", "BIOS v1.34")
ROMX_LOAD("adaptec_inc_450214-00_a_bios_8800_1991.u47", 0x0000, 0x4000, CRC(6cf06151) SHA1(0da45634b12b33fc886920d065cc8ffb2cf376b8), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "v140", "BIOS v1.40")
ROMX_LOAD("adaptec_inc_450216-00_a_bios_dc00_1992.u47", 0x0000, 0x4000, CRC(056d75ec) SHA1(8ca143adfc7d20ad5d49f14dedabc8276454bf9e), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "v140s", "BIOS v1.40 (Extended Timeout)")
ROMX_LOAD("b_f100.bin", 0x0000, 0x4000, CRC(b695acc0) SHA1(683112fafdf83d5eb89237d9215f7d6eacc6eeaf), ROM_BIOS(2))
ROM_REGION16_LE(0x8000, "mcode", 0)
ROMX_LOAD("adaptec_inc_450117-00_c_mcode_23a8_1991.u10", 0x0000, 0x8000, NO_DUMP, ROM_BIOS(0))
ROMX_LOAD("adaptec_inc_450113-00_d_mcode_b7d6_1992.u10", 0x0000, 0x8000, CRC(0a55a555) SHA1(ff400f56b33f0ad94e34564d7715a0773b335844), ROM_BIOS(1))
ROMX_LOAD("m_c7b8.bin", 0x0000, 0x8000, CRC(21282e86) SHA1(18cb3960dc47f2c14beb88f9680c1f66c4652b04), ROM_BIOS(2))
ROM_END
const tiny_rom_entry *aha1740_device::device_rom_region() const
{
return ROM_NAME(aha1740);
}
const tiny_rom_entry *aha1742a_device::device_rom_region() const
{
return ROM_NAME(aha1742a);
}