summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/fidel_as12.cpp
blob: 3dd4f04f92561e62e3343adb321df8778097f833 (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
// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:yoyo_chessboard, Berger
/******************************************************************************

Fidelity Elegance Chess Challenger (AS12/6085)

Hardware notes:
- R65C02P4 CPU @ 3/3.57/4MHz
- 3*8KB ROM(TMM2764), 2*2KB RAM(HM6116)
- PCB label 510-1084B01

This is on the SC12B board, with enough modifications to support more leds and
magnetic chess board sensors. See fidel_sc12.cpp for a more technical description.

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

#include "emu.h"
#include "machine/fidel_clockdiv.h"

#include "bus/generic/carts.h"
#include "bus/generic/slot.h"
#include "cpu/m6502/r65c02.h"
#include "machine/clock.h"
#include "machine/sensorboard.h"
#include "sound/dac.h"
#include "video/pwm.h"

#include "softlist_dev.h"
#include "speaker.h"

// internal artwork
#include "fidel_as12.lh" // clickable


namespace {

// note: sub-class of fidel_clockdiv_state (see mame/machine/fidel_clockdiv.*)

class as12_state : public fidel_clockdiv_state
{
public:
	as12_state(const machine_config &mconfig, device_type type, const char *tag) :
		fidel_clockdiv_state(mconfig, type, tag),
		m_board(*this, "board"),
		m_display(*this, "display"),
		m_dac(*this, "dac"),
		m_inputs(*this, "IN.0")
	{ }

	// machine configs
	void feleg(machine_config &config);
	void felega(machine_config &config);

	DECLARE_INPUT_CHANGED_MEMBER(switch_cpu_freq) { set_cpu_freq(); }

protected:
	virtual void machine_start() override;
	virtual void machine_reset() override;
	void set_cpu_freq();

private:
	// devices/pointers
	required_device<sensorboard_device> m_board;
	required_device<pwm_display_device> m_display;
	required_device<dac_bit_interface> m_dac;
	required_ioport m_inputs;

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

	// I/O handlers
	void update_display();
	void control_w(u8 data);
	void led_w(offs_t offset, u8 data);
	u8 input_r(offs_t offset);

	u16 m_inp_mux = 0;
	u8 m_led_data = 0;
};

void as12_state::machine_start()
{
	fidel_clockdiv_state::machine_start();

	// register for savestates
	save_item(NAME(m_inp_mux));
	save_item(NAME(m_led_data));
}

void as12_state::machine_reset()
{
	set_cpu_freq();
	fidel_clockdiv_state::machine_reset();
}

void as12_state::set_cpu_freq()
{
	// known official CPU speeds: 3MHz, 3.57MHz, 4MHz
	static const XTAL xtal[3] = { 3_MHz_XTAL, 3.579545_MHz_XTAL, 4_MHz_XTAL };
	m_maincpu->set_unscaled_clock(xtal[ioport("FAKE")->read() % 3]);
	div_refresh();
}



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

void as12_state::update_display()
{
	// 8*8(+1) chessboard leds
	m_display->matrix(m_inp_mux, m_led_data);
}

void as12_state::control_w(u8 data)
{
	// d0-d3: 74245 P0-P3
	// 74245 Q0-Q8: input mux, led select
	u16 sel = 1 << (data & 0xf) & 0x3ff;
	m_inp_mux = bitswap<9>(sel,5,8,7,6,4,3,1,0,2);
	update_display();

	// 74245 Q9: speaker out
	m_dac->write(BIT(sel, 9));

	// d4,d5: printer?
	// d6,d7: N/C?
}

void as12_state::led_w(offs_t offset, u8 data)
{
	// a0-a2,d0: led data via NE591N
	m_led_data = (m_led_data & ~(1 << offset)) | ((data & 1) << offset);
	update_display();
}

u8 as12_state::input_r(offs_t offset)
{
	u8 data = 0;

	// a0-a2,d7: multiplexed inputs (active low)
	// read chessboard sensors
	for (int i = 0; i < 8; i++)
		if (BIT(m_inp_mux, i))
			data |= m_board->read_file(i);

	// read sidepanel buttons
	if (m_inp_mux & 0x100)
		data |= m_inputs->read();

	data = bitswap<8>(data,4,3,2,1,0,5,6,7);
	return (data >> offset & 1) ? 0 : 0x80;
}



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

void as12_state::main_map(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x0fff).ram();
	map(0x1800, 0x1807).w(FUNC(as12_state::led_w)).nopr();
	map(0x2000, 0x5fff).r("cartslot", FUNC(generic_slot_device::read_rom));
	map(0x6000, 0x6000).mirror(0x1fff).w(FUNC(as12_state::control_w));
	map(0x8000, 0x9fff).rom();
	map(0xa000, 0xa007).mirror(0x1ff8).r(FUNC(as12_state::input_r));
	map(0xc000, 0xcfff).mirror(0x1000).rom();
	map(0xe000, 0xffff).rom();
}



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

static INPUT_PORTS_START( feleg )
	PORT_INCLUDE( fidel_clockdiv_4 )

	PORT_START("IN.0")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("RV / Pawn")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("DM / Knight")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("TB / Bishop")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("LV / Rook")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / King")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("RE")

	PORT_START("FAKE")
	PORT_CONFNAME( 0x03, 0x02, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, as12_state, switch_cpu_freq, 0) // factory set
	PORT_CONFSETTING(    0x00, "3MHz" )
	PORT_CONFSETTING(    0x01, "3.57MHz" )
	PORT_CONFSETTING(    0x02, "4MHz" )
INPUT_PORTS_END

static INPUT_PORTS_START( felega )
	PORT_INCLUDE( feleg )

	PORT_MODIFY("FAKE") // default to 3.57MHz
	PORT_CONFNAME( 0x03, 0x01, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, as12_state, switch_cpu_freq, 0) // factory set
	PORT_CONFSETTING(    0x00, "3MHz" )
	PORT_CONFSETTING(    0x01, "3.57MHz" )
	PORT_CONFSETTING(    0x02, "4MHz" )
INPUT_PORTS_END



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

void as12_state::feleg(machine_config &config)
{
	/* basic machine hardware */
	R65C02(config, m_maincpu, 4_MHz_XTAL); // R65C02P4
	m_maincpu->set_addrmap(AS_PROGRAM, &as12_state::main_map);

	auto &irq_clock(CLOCK(config, "irq_clock", 600)); // from 556 timer (22nF, 110K, 1K), ideal frequency is 600Hz
	irq_clock.set_pulse_width(attotime::from_usec(17)); // active for 17us
	irq_clock.signal_handler().set_inputline(m_maincpu, M6502_IRQ_LINE);

	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(9, 8);
	config.set_default_layout(layout_fidel_as12);

	/* sound hardware */
	SPEAKER(config, "speaker").front_center();
	DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);

	/* cartridge */
	GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "fidel_scc");
	SOFTWARE_LIST(config, "cart_list").set_original("fidel_scc");
}

void as12_state::felega(machine_config &config)
{
	feleg(config);

	/* basic machine hardware */
	m_maincpu->set_clock(3.579545_MHz_XTAL);
}



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

ROM_START( feleg ) // model 6085
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD("feleg.8000", 0x8000, 0x2000, CRC(e9df31e8) SHA1(31c52bb8f75580c82093eb950959c1bc294189a8) ) // TMM2764, no label
	ROM_LOAD("feleg.c000", 0xc000, 0x1000, CRC(bed9c84b) SHA1(c12f39765b054d2ad81f747e698715ad4246806d) ) // "
	ROM_CONTINUE(          0xc000, 0x1000 ) // 1st half empty
	ROM_LOAD("feleg.e000", 0xe000, 0x2000, CRC(b1fb49aa) SHA1(d8c9687dd564f0fa603e6d684effb1d113ac64b4) ) // "
ROM_END

ROM_START( felega ) // model AS12
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD("blue.8000",   0x8000, 0x2000, CRC(2e07e657) SHA1(3238f21bdbf2277851e5a32e18c043e654123f00) ) // M5L2764K-2
	ROM_LOAD("yellow.c000", 0xc000, 0x1000, CRC(fcc48302) SHA1(f60d34229721e8659e9f81c267177daec7723d8f) ) // TMS2732AJL-45
	ROM_LOAD("black.e000",  0xe000, 0x2000, CRC(9142121b) SHA1(264380e7ad36b7b1867658e1af387624d2a72630) ) // TMS2764JL-25
ROM_END

} // anonymous namespace



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

//    YEAR  NAME    PARENT  CMP  MACHINE  INPUT    STATE       INIT        COMPANY, FULLNAME, FLAGS
CONS( 1986, feleg,  0,       0,  feleg,   feleg,   as12_state, empty_init, "Fidelity Electronics", "Elegance Chess Challenger (model 6085)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_TIMING )
CONS( 1985, felega, feleg,   0,  felega,  felega,  as12_state, empty_init, "Fidelity Electronics", "Elegance Chess Challenger (model AS12)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_TIMING )