/
cc7.cpp
283 lines (214 loc) · 9.73 KB
/
cc7.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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:Berger
/*******************************************************************************
Fidelity Chess Challenger 7 (BCC)
------------------------
It was Fidelity's most sold chess computer. The first version was released in
1979, and a newer PCB revision was produced in 1980.
Zilog Z80A, 3.579MHz from XTAL
Z80 IRQ/NMI unused, no timer IC.
This is a cost-reduced design from CC10, no special I/O chips.
Known ROM labels (long production run, so there are several revisions):
CN19064N BCC, CN19103N BCC-REVB, 101-32016, 101-1005C01
Backgammon Challenger (BKC) is the same PCB, with the speaker connection going
to the display panel instead.
CC7 (BCC) was also bootlegged around 1981 by Splice Industria Brasileira,
as "Byte XD-300". Mostek MK3880N-4 @ 4MHz, ROM contents is same as BCC REVB.
RE information from netlist by Berger (1st version PCB)
Memory map:
-----------
0000-0FFF: 4K 2332 ROM
2000-2FFF: ROM/RAM bus conflict!
3000-3FFF: 256 bytes RAM (2111 SRAM x2)
4000-FFFF: Z80 A14/A15 not connected
Port map (Write):
---------
D0-D3: digit select and keypad mux
D4: CHECK led
D5: LOSE led
A0-A2: NE591 A0-A2
D7: NE591 D (_C not used)
NE591 Q0-Q6: digit segments A-G
NE591 Q7: buzzer
Port map (Read):
---------
D0-D3: keypad row
*******************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "sound/dac.h"
#include "video/pwm.h"
#include "speaker.h"
// internal artwork
#include "fidel_bcc.lh"
#include "fidel_bkc.lh"
namespace {
class bcc_state : public driver_device
{
public:
bcc_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_display(*this, "display"),
m_dac(*this, "dac"),
m_inputs(*this, "IN.%u", 0)
{ }
// machine configs
void bcc(machine_config &config);
void bkc(machine_config &config);
protected:
virtual void machine_start() override;
private:
// devices/pointers
required_device<cpu_device> m_maincpu;
required_device<pwm_display_device> m_display;
optional_device<dac_1bit_device> m_dac;
required_ioport_array<4> m_inputs;
u8 m_inp_mux = 0;
u8 m_7seg_data = 0;
// address maps
void main_map(address_map &map);
void main_io(address_map &map);
// I/O handlers
u8 input_r();
void control_w(offs_t offset, u8 data);
};
void bcc_state::machine_start()
{
// register for savestates
save_item(NAME(m_inp_mux));
save_item(NAME(m_7seg_data));
}
/*******************************************************************************
I/O
*******************************************************************************/
void bcc_state::control_w(offs_t offset, u8 data)
{
// a0-a2,d7: digit segment data via NE591
u8 mask = 1 << (offset & 7);
m_7seg_data = (m_7seg_data & ~mask) | ((data & 0x80) ? mask : 0);
// BCC: NE591 Q7 is speaker out
if (m_dac != nullptr)
m_dac->write(BIT(m_7seg_data, 7));
// d0-d3: led select, input mux
// d4,d5: upper leds(direct)
m_display->matrix(data & 0x3f, m_7seg_data);
m_inp_mux = data & 0xf;
}
u8 bcc_state::input_r()
{
u8 data = 0;
// d0-d3: multiplexed inputs
for (int i = 0; i < 4; i++)
if (BIT(m_inp_mux, i))
data |= m_inputs[i]->read();
return data;
}
/*******************************************************************************
Address Maps
*******************************************************************************/
void bcc_state::main_map(address_map &map)
{
map.unmap_value_high();
map.global_mask(0x3fff);
map(0x0000, 0x0fff).rom();
map(0x3000, 0x30ff).mirror(0x0f00).ram();
}
void bcc_state::main_io(address_map &map)
{
map.global_mask(0x07);
map(0x00, 0x07).rw(FUNC(bcc_state::input_r), FUNC(bcc_state::control_w));
}
/*******************************************************************************
Input Ports
*******************************************************************************/
static INPUT_PORTS_START( bcc )
PORT_START("IN.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("EN") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PV") PORT_CODE(KEYCODE_V)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_D)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_H)
PORT_START("IN.1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CL") PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PB") PORT_CODE(KEYCODE_P)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_C)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_G)
PORT_START("IN.2")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CB") PORT_CODE(KEYCODE_X)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("DM") PORT_CODE(KEYCODE_M)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_B)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_F)
PORT_START("IN.3")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("RE") PORT_CODE(KEYCODE_R)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("LV") PORT_CODE(KEYCODE_L)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_A)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_E)
INPUT_PORTS_END
static INPUT_PORTS_START( bkc )
PORT_START("IN.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("EN") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CODE(KEYCODE_9_PAD)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD)
PORT_START("IN.1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CL") PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD)
PORT_START("IN.2")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("GM") PORT_CODE(KEYCODE_G)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD)
PORT_START("IN.3")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("RE") PORT_CODE(KEYCODE_R)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PB") PORT_CODE(KEYCODE_P)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PV") PORT_CODE(KEYCODE_V)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD)
INPUT_PORTS_END
/*******************************************************************************
Machine Configs
*******************************************************************************/
void bcc_state::bkc(machine_config &config)
{
// basic machine hardware
Z80(config, m_maincpu, 3.579545_MHz_XTAL);
m_maincpu->set_addrmap(AS_PROGRAM, &bcc_state::main_map);
m_maincpu->set_addrmap(AS_IO, &bcc_state::main_io);
// video hardware
PWM_DISPLAY(config, m_display).set_size(6, 8);
m_display->set_segmask(0xf, 0x7f);
config.set_default_layout(layout_fidel_bkc);
}
void bcc_state::bcc(machine_config &config)
{
bkc(config);
config.set_default_layout(layout_fidel_bcc);
// sound hardware
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
}
/*******************************************************************************
ROM Definitions
*******************************************************************************/
ROM_START( cc7 ) // PCB label 510-380
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "101-32016", 0x0000, 0x1000, CRC(b9076c52) SHA1(09b17ac6cd6a1c5c62aea3649f3367bcf4405598) ) // 2332
ROM_END
ROM_START( cc7a )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "cn19103n_bcc-revb", 0x0000, 0x1000, CRC(a397d471) SHA1(9b12bc442fccee40f4d8500c792bc9d886c5e1a5) ) // 2332
ROM_END
ROM_START( backgamc ) // model BKC, PCB label P-380A-5
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "cn19255n_101-32012", 0x0000, 0x1000, CRC(0a8a19b7) SHA1(d6f0dd44b33c9b79570cf0ceac02a036ec91ba57) ) // 2332
ROM_END
} // anonymous namespace
/*******************************************************************************
Drivers
*******************************************************************************/
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS
SYST( 1980, cc7, 0, 0, bcc, bcc, bcc_state, empty_init, "Fidelity Electronics", "Chess Challenger \"7\" (set 1)", MACHINE_SUPPORTS_SAVE )
SYST( 1979, cc7a, cc7, 0, bcc, bcc, bcc_state, empty_init, "Fidelity Electronics", "Chess Challenger \"7\" (set 2)", MACHINE_SUPPORTS_SAVE )
SYST( 1979, backgamc, 0, 0, bkc, bkc, bcc_state, empty_init, "Fidelity Electronics", "Backgammon Challenger", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW )