/
slicer.cpp
174 lines (144 loc) · 6.85 KB
/
slicer.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
// license:BSD-3-Clause
// copyright-holders:Carl
// Slicer Computers Slicer 80186 SBC
// The bios makefile refers to a "exe3bin" utility, this can be substituted with FreeDOS exe2bin and the /l=0xf800 option
// which will fixup the relocations
#include "emu.h"
#include "cpu/i86/i186.h"
#include "imagedev/floppy.h"
#include "machine/74259.h"
#include "machine/wd_fdc.h"
#include "machine/mc68681.h"
#include "bus/rs232/rs232.h"
#include "bus/isa/isa.h"
#include "bus/scsi/scsi.h"
namespace {
class slicer_state : public driver_device
{
public:
slicer_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_fdc(*this, "fdc"),
m_sasi(*this, "sasi")
{
}
void slicer(machine_config &config);
private:
void sio_out_w(uint8_t data);
void drive_size_w(int state);
template<unsigned int drive> void drive_sel_w(int state);
void slicer_io(address_map &map);
void slicer_map(address_map &map);
required_device<fd1797_device> m_fdc;
required_device<scsi_port_device> m_sasi;
};
void slicer_state::sio_out_w(uint8_t data)
{
floppy_image_device *floppy;
int state = (data & 0x80) ? 0 : 1;
char devname[8];
for(int i = 0; i < 4; i++)
{
sprintf(devname, "%d", i);
floppy = m_fdc->subdevice<floppy_connector>(devname)->get_device();
if(floppy)
floppy->mon_w(state);
}
}
template<unsigned int drive>
void slicer_state::drive_sel_w(int state)
{
floppy_image_device *floppy;
char devname[8];
if (!state)
return;
sprintf(devname, "%d", drive);
floppy = m_fdc->subdevice<floppy_connector>(devname)->get_device();
m_fdc->set_floppy(floppy);
}
void slicer_state::drive_size_w(int state)
{
m_fdc->set_unscaled_clock (state ? 1'000'000 : 2'000'000);
}
void slicer_state::slicer_map(address_map &map)
{
map(0x00000, 0x3ffff).ram(); // fixed 256k for now
map(0xf8000, 0xfffff).rom().region("bios", 0);
}
void slicer_state::slicer_io(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x007f).rw(m_fdc, FUNC(fd1797_device::read), FUNC(fd1797_device::write)).umask16(0x00ff); //PCS0
map(0x0080, 0x00ff).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask16(0x00ff); //PCS1
map(0x0100, 0x010f).mirror(0x0070).w("drivelatch", FUNC(ls259_device::write_d0)).umask16(0x00ff); //PCS2
// TODO: 0x180 sets ack
map(0x0180, 0x0180).r("sasi_data_in", FUNC(input_buffer_device::read)).w("sasi_data_out", FUNC(output_latch_device::write)).umask16(0x00ff); //PCS3
map(0x0181, 0x0181).r("sasi_ctrl_in", FUNC(input_buffer_device::read));
map(0x0184, 0x0184).r("sasi_data_in", FUNC(input_buffer_device::read)).w("sasi_data_out", FUNC(output_latch_device::write)).umask16(0x00ff);
map(0x0185, 0x0185).r("sasi_ctrl_in", FUNC(input_buffer_device::read));
}
static void slicer_floppies(device_slot_interface &device)
{
device.option_add("525dd", FLOPPY_525_DD);
device.option_add("8dsdd", FLOPPY_8_DSDD);
}
void slicer_state::slicer(machine_config &config)
{
i80186_cpu_device &maincpu(I80186(config, "maincpu", 16_MHz_XTAL)); // 8 MHz clock output
maincpu.set_addrmap(AS_PROGRAM, &slicer_state::slicer_map);
maincpu.set_addrmap(AS_IO, &slicer_state::slicer_io);
scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL));
duart.irq_cb().set("maincpu", FUNC(i80186_cpu_device::int0_w));
duart.a_tx_cb().set("rs232_1", FUNC(rs232_port_device::write_txd));
duart.b_tx_cb().set("rs232_2", FUNC(rs232_port_device::write_txd));
duart.outport_cb().set(FUNC(slicer_state::sio_out_w));
rs232_port_device &rs232_1(RS232_PORT(config, "rs232_1", default_rs232_devices, "terminal"));
rs232_1.rxd_handler().set("duart", FUNC(scn2681_device::rx_a_w));
rs232_port_device &rs232_2(RS232_PORT(config, "rs232_2", default_rs232_devices, nullptr));
rs232_2.rxd_handler().set("duart", FUNC(scn2681_device::rx_b_w));
FD1797(config, m_fdc, 16_MHz_XTAL / 2 / 8);
m_fdc->intrq_wr_callback().set("maincpu", FUNC(i80186_cpu_device::int1_w));
m_fdc->drq_wr_callback().set("maincpu", FUNC(i80186_cpu_device::drq0_w));
FLOPPY_CONNECTOR(config, "fdc:0", slicer_floppies, "525dd", floppy_image_device::default_mfm_floppy_formats);
FLOPPY_CONNECTOR(config, "fdc:1", slicer_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats);
FLOPPY_CONNECTOR(config, "fdc:2", slicer_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats);
FLOPPY_CONNECTOR(config, "fdc:3", slicer_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats);
ls259_device &drivelatch(LS259(config, "drivelatch")); // U29
drivelatch.q_out_cb<0>().set("sasi", FUNC(scsi_port_device::write_sel));
drivelatch.q_out_cb<1>().set("sasi", FUNC(scsi_port_device::write_rst));
drivelatch.q_out_cb<2>().set(FUNC(slicer_state::drive_sel_w<3>));
drivelatch.q_out_cb<3>().set(FUNC(slicer_state::drive_sel_w<2>));
drivelatch.q_out_cb<4>().set(FUNC(slicer_state::drive_sel_w<1>));
drivelatch.q_out_cb<5>().set(FUNC(slicer_state::drive_sel_w<0>));
drivelatch.q_out_cb<6>().set(FUNC(slicer_state::drive_size_w));
drivelatch.q_out_cb<7>().set("fdc", FUNC(fd1797_device::dden_w));
SCSI_PORT(config, m_sasi, 0);
m_sasi->set_data_input_buffer("sasi_data_in");
m_sasi->bsy_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit3));
m_sasi->msg_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit4));
m_sasi->cd_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit5));
m_sasi->req_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit6));
m_sasi->io_handler().set("sasi_ctrl_in", FUNC(input_buffer_device::write_bit7));
output_latch_device &sasi_data_out(OUTPUT_LATCH(config, "sasi_data_out"));
m_sasi->set_output_latch(sasi_data_out);
INPUT_BUFFER(config, "sasi_data_in");
INPUT_BUFFER(config, "sasi_ctrl_in");
}
ROM_START( slicer )
ROM_REGION16_LE(0x8001, "bios", 0)
// built from sources, reset.asm adds an extra byte
ROM_LOAD("epbios.bin", 0x0000, 0x8001, CRC(96fe9dd4) SHA1(5fc43454fe7d51f2ae97aef822155dcd28eb7f23))
ROM_REGION(0x10000, "user1", 0)
//slicer_h.bin : main slicer board, high byte
//slicer_l.bin : main slicer board, low byte
//slvid_cg.bin : slicer video/keyboard expansion board, character generator
//slvid_e.bin : slicer video/keyboard expansion board, even byte
//slvid_o.bin : slicer video/keyboard expansion board, odd byte
ROM_LOAD( "slicer_h.bin", 0x000000, 0x004000, CRC(1f9a79b7) SHA1(2070c6818d39fe7ec4370fc2304469793a126731) )
ROM_LOAD( "slicer_l.bin", 0x000000, 0x004000, CRC(6feef94b) SHA1(174488591b727a4130166bcb2e83c0e74323d43b) )
ROM_LOAD( "slvid_cg.bin", 0x000000, 0x001000, CRC(d4d9ac2f) SHA1(866c760320b224ba8670501ea905de32193acedc) )
ROM_LOAD( "slvid_o.bin", 0x000000, 0x001000, CRC(c62dda77) SHA1(1d0b9abc53412b0725072d4c33c478fb5358ab5c) )
ROM_LOAD( "slvid_e.bin", 0x000000, 0x001000, CRC(8694274f) SHA1(8373baaea8d689bf52699b587942a57f26baf740) )
ROM_END
} // anonymous namespace
COMP( 1983, slicer, 0, 0, slicer, 0, slicer_state, empty_init, "Slicer Computers", "Slicer", MACHINE_NO_SOUND )