summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/conic_cchess2.cpp
blob: dcb90d1612160e2f15acf3a0d61bba4ddfc10547 (plain) (blame)
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
284
285
// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:bataais
/******************************************************************************

Conic Computer Chess (model 07012), also sold under the same name by
Hanimex (model HMG 1200) and Westrak (model CC 1). It's also known as
Tracer Chess, this title is from an advertisement flyer, the actual chess
computer was simply named Computer Chess.

The chessboard sensors aren't buttons or magnets, but 64 jacks. There is
a metal plug under each chesspiece. From MAME's perspective, it works the
same as a magnet sensorboard.

After the player's move, the user needs to press Enter. This does not apply
to the computer's move.

Hardware notes:
- Synertek 6504 @ ~1MHz
- 2*Motorola MC6821P PIA
- 4KB ROM(AMI), 1KB RAM(2*Synertek 1024x4)
- beeper, 8*8 leds, plug board

BTANB:
- Learn button still works when in modify-mode

******************************************************************************/

#include "emu.h"
#include "cpu/m6502/m6504.h"
#include "machine/6821pia.h"
#include "machine/sensorboard.h"
#include "sound/dac.h"
#include "sound/volt_reg.h"
#include "video/pwm.h"
#include "speaker.h"

// internal artwork
#include "conic_cchess2.lh" // clickable


namespace {

class cchess2_state : public driver_device
{
public:
	cchess2_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_pia(*this, "pia%u", 0),
		m_board(*this, "board"),
		m_display(*this, "display"),
		m_dac(*this, "dac"),
		m_inputs(*this, "IN.%u", 0)
	{ }

	// machine configs
	void cncchess2(machine_config &config);

	// assume that RESET button is tied to 6504 reset pin
	DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); }

protected:
	virtual void machine_start() override;

private:
	// devices/pointers
	required_device<cpu_device> m_maincpu;
	required_device_array<pia6821_device, 2> m_pia;
	required_device<sensorboard_device> m_board;
	required_device<pwm_display_device> m_display;
	required_device<dac_bit_interface> m_dac;
	required_ioport_array<8> m_inputs;

	// address maps
	void main_map(address_map &map);

	// I/O handlers
	void update_display();
	void update_dac();
	DECLARE_WRITE8_MEMBER(pia0_pa_w);
	DECLARE_WRITE8_MEMBER(pia0_pb_w);
	DECLARE_READ8_MEMBER(pia1_pa_r);
	DECLARE_READ8_MEMBER(pia1_pb_r);
	DECLARE_WRITE8_MEMBER(pia1_pb_w);

	u8 m_inp_mux = 0;
	u8 m_led_data = 0;
	int m_dac_on = 0;
};

void cchess2_state::machine_start()
{
	save_item(NAME(m_inp_mux));
	save_item(NAME(m_led_data));
	save_item(NAME(m_dac_on));
}



/******************************************************************************
    I/O
******************************************************************************/

void cchess2_state::update_display()
{
	m_display->matrix(m_inp_mux, m_led_data);
}

void cchess2_state::update_dac()
{
	m_dac->write(m_dac_on & BIT(m_inp_mux, 1));
}

WRITE8_MEMBER(cchess2_state::pia0_pa_w)
{
	// d0-d7: input mux/led select
	// d1: dac data
	m_inp_mux = data;
	update_display();
	update_dac();
}

WRITE8_MEMBER(cchess2_state::pia0_pb_w)
{
	// d0-d7: led data
	m_led_data = data;
	update_display();
}

READ8_MEMBER(cchess2_state::pia1_pa_r)
{
	u8 data = 0;

	// d0-d7: chessboard sensors
	for (int i = 0; i < 8; i++)
		if (BIT(m_inp_mux, i))
			data |= m_board->read_rank(i);

	return ~data;
}

READ8_MEMBER(cchess2_state::pia1_pb_r)
{
	u8 data = 0;

	// d0-d3: multiplexed inputs
	for (int i = 0; i < 8; i++)
		if (BIT(m_inp_mux, i))
			data |= m_inputs[i]->read();

	return data;
}

WRITE8_MEMBER(cchess2_state::pia1_pb_w)
{
	// d7: dac on
	m_dac_on = BIT(data, 7);
	update_dac();
}



/******************************************************************************
    Address Maps
******************************************************************************/

void cchess2_state::main_map(address_map &map)
{
	map.global_mask(0x1fff);
	map(0x0000, 0x03ff).ram();
	map(0x0a00, 0x0a03).mirror(0x00fc).rw(m_pia[0], FUNC(pia6821_device::read), FUNC(pia6821_device::write));
	map(0x0c00, 0x0c03).mirror(0x00fc).rw(m_pia[1], FUNC(pia6821_device::read), FUNC(pia6821_device::write));
	map(0x1000, 0x1fff).rom();
}



/******************************************************************************
    Input Ports
******************************************************************************/

static INPUT_PORTS_START( cncchess2 )
	PORT_START("IN.0")
	PORT_BIT(0x03, IP_ACTIVE_HIGH, IPT_UNUSED)
	PORT_CONFNAME( 0x0c, 0x08, "Mode" )
	PORT_CONFSETTING(    0x04, "Modify" )
	PORT_CONFSETTING(    0x08, "Play" )

	PORT_START("IN.1")
	PORT_CONFNAME( 0x03, 0x02, "Color" )
	PORT_CONFSETTING(    0x01, "Black" ) // from the bottom
	PORT_CONFSETTING(    0x02, "White" )
	PORT_BIT(0x0c, IP_ACTIVE_HIGH, IPT_UNUSED)

	PORT_START("IN.2")
	PORT_BIT(0x0f, IP_ACTIVE_HIGH, IPT_UNUSED)

	PORT_START("IN.3")
	PORT_BIT(0x0f, IP_ACTIVE_HIGH, IPT_UNUSED)

	PORT_START("IN.4")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_NAME("Enter")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_N) PORT_NAME("Learn")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_L) PORT_NAME("Level")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_NAME("6 / White King")

	PORT_START("IN.5")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_NAME("5 / White Queen")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_NAME("4 / White Rook")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_NAME("3 / White Bishop")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_NAME("2 / White Knight")

	PORT_START("IN.6")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("1 / White Pawn")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE) PORT_NAME("Clear")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_7) PORT_NAME("7 / Black Pawn")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_NAME("8 / Black Knight")

	PORT_START("IN.7")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_9) PORT_NAME("9 / Black Bishop")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_0) PORT_NAME("10 / Black Rook")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_MINUS) PORT_NAME("11 / Black Queen")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_EQUALS) PORT_NAME("12 / Black King")

	PORT_START("RESET")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_CHANGED_MEMBER(DEVICE_SELF, cchess2_state, reset_button, 0) PORT_NAME("Reset")
INPUT_PORTS_END



/******************************************************************************
    Machine Configs
******************************************************************************/

void cchess2_state::cncchess2(machine_config &config)
{
	/* basic machine hardware */
	M6504(config, m_maincpu, 1000000); // approximation, no XTAL
	m_maincpu->set_addrmap(AS_PROGRAM, &cchess2_state::main_map);

	PIA6821(config, m_pia[0], 0);
	m_pia[0]->writepa_handler().set(FUNC(cchess2_state::pia0_pa_w));
	m_pia[0]->writepb_handler().set(FUNC(cchess2_state::pia0_pb_w));

	PIA6821(config, m_pia[1], 0);
	m_pia[1]->readpa_handler().set(FUNC(cchess2_state::pia1_pa_r));
	m_pia[1]->readpb_handler().set(FUNC(cchess2_state::pia1_pb_r));
	m_pia[1]->writepb_handler().set(FUNC(cchess2_state::pia1_pb_w));

	SENSORBOARD(config, m_board).set_type(sensorboard_device::MAGNETS);
	m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess));
	m_board->set_delay(attotime::from_msec(150));

	/* video hardware */
	PWM_DISPLAY(config, m_display).set_size(8, 8);
	config.set_default_layout(layout_conic_cchess2);

	/* sound hardware */
	SPEAKER(config, "speaker").front_center();
	DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
	VOLTAGE_REGULATOR(config, "vref").add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
}



/******************************************************************************
    ROM Definitions
******************************************************************************/

ROM_START( cncchess2 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD("c11485.u2", 0x1000, 0x1000, CRC(b179d536) SHA1(0b1f9c247a4a3e2ccbf8d3ae5efa62b8938f572f) ) // AMI 2332
ROM_END

} // anonymous namespace



/******************************************************************************
    Drivers
******************************************************************************/

//    YEAR  NAME       PARENT CMP MACHINE    INPUT      STATE          INIT        COMPANY, FULLNAME, FLAGS
CONS( 1980, cncchess2, 0,      0, cncchess2, cncchess2, cchess2_state, empty_init, "Conic", "Computer Chess (Conic, model 7012)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )