summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/sv8000.cpp
blob: 290be9e8908a7f36884fbb36b915c41dca2caa78 (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
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
// license:BSD-3-Clause
// copyright-holders:Wilbert Pol, Robbbert
/***************************************************************************

    Bandai Super Vision 8000 (TV Jack 8000)
      driver by Wilbert Pol, Robbbert, ranger_lennier, and Charles McDonald

        2014/01/07 Skeleton driver.

The Bandai Super Vision 8000 contains:
- NEC D78C (Z80)
- AY-3-8910
- AMI S68047P (6847 variant)
- NEC D8255C

Looking at the code of the cartridges it seems there is:
- 1KB of main system RAM
- 3KB of video RAM

    TODO:
    - Check configuration of S68047P pins through 8910 port A against
      schematics
    - Verify clock

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


#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/i8255.h"
#include "sound/ay8910.h"
#include "video/mc6847.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.h"

class sv8000_state : public driver_device
{
public:
	sv8000_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_s68047p(*this, "s68047p")
		, m_cart(*this, "cartslot")
		, m_videoram(*this, "videoram")
		, m_io_row0(*this, "ROW0")
		, m_io_row1(*this, "ROW1")
		, m_io_row2(*this, "ROW2")
		, m_io_joy(*this, "JOY")
	{ }

	void sv8000(machine_config &config);

private:
	DECLARE_DEVICE_IMAGE_LOAD_MEMBER( cart_load );

	DECLARE_READ8_MEMBER( ay_port_a_r );
	DECLARE_READ8_MEMBER( ay_port_b_r );
	DECLARE_WRITE8_MEMBER( ay_port_a_w );
	DECLARE_WRITE8_MEMBER( ay_port_b_w );

	DECLARE_READ8_MEMBER( i8255_porta_r );
	DECLARE_WRITE8_MEMBER( i8255_porta_w );
	DECLARE_READ8_MEMBER( i8255_portb_r );
	DECLARE_WRITE8_MEMBER( i8255_portb_w );
	DECLARE_READ8_MEMBER( i8255_portc_r );
	DECLARE_WRITE8_MEMBER( i8255_portc_w );

	DECLARE_READ8_MEMBER( mc6847_videoram_r );

	virtual void machine_start() override;
	virtual void machine_reset() override;
	void sv8000_io(address_map &map);
	void sv8000_mem(address_map &map);

	required_device<cpu_device> m_maincpu;
	required_device<s68047_device> m_s68047p;
	required_device<generic_slot_device> m_cart;
	required_shared_ptr<uint8_t> m_videoram;
	required_ioport m_io_row0;
	required_ioport m_io_row1;
	required_ioport m_io_row2;
	required_ioport m_io_joy;

	uint8_t m_column;

	// graphics signals
	uint8_t m_ag;
	uint8_t m_gm2;
	uint8_t m_gm1;
	uint8_t m_gm0;
	uint8_t m_as;
	uint8_t m_css;
	uint8_t m_intext;
	uint8_t m_inv;
};


void sv8000_state::sv8000_mem(address_map &map)
{
	map.unmap_value_high();
	//AM_RANGE(0x0000, 0x0fff)      // mapped by the cartslot
	map(0x8000, 0x83ff).ram(); // Work RAM??
	map(0xc000, 0xcbff).ram().share("videoram");
}


void sv8000_state::sv8000_io(address_map &map)
{
	map.unmap_value_high();
	map.global_mask(0xff);
	map(0x80, 0x83).rw("i8255", FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0xc0, 0xc0).w("ay8910", FUNC(ay8910_device::data_w));   // Not sure yet
	map(0xc1, 0xc1).w("ay8910", FUNC(ay8910_device::address_w)); // Not sure yet
}


/* Input ports */
// On the main console:
//
//  1 2 3                              1 2 3
//  4 5 6                              4 5 6
//  7 8 9                              7 8 9
//  * 0 #                              * 0 #
//
//  Button/dial?    POWER   RESET    Button/dial?
//
static INPUT_PORTS_START( sv8000 )
	PORT_START("ROW0")
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("Left 1")
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_Q) PORT_NAME("Left 4") // Guess
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_A) PORT_NAME("Left 7") // Guess
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_Z) PORT_NAME("Left *") // Guess
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("Right 1")
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("Right 4") // Guess
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_7_PAD) PORT_NAME("Right 7") // Guess
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_DEL_PAD) PORT_NAME("Right *") // Guess

	PORT_START("ROW1")
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_NAME("Left 2")
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_W) PORT_NAME("Left 5") // Guess
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_S) PORT_NAME("Left 8") // Guess
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_X) PORT_NAME("Left 0")
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("Right 2")
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("Right 5") // Guess
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_8_PAD) PORT_NAME("Right 8") // Guess
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_0_PAD) PORT_NAME("Right 0")

	PORT_START("ROW2")
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_NAME("Left 3")
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_NAME("Left 6") // Guess
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_D) PORT_NAME("Left 9") // Guess
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_C) PORT_NAME("Left #") // Guess
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("Right 3")
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("Right 6") // Guess
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_9_PAD) PORT_NAME("Right 9") // Guess
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_ENTER_PAD) PORT_NAME("Right #") // Guess

	PORT_START("JOY")
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_STOP) PORT_NAME("Left Right")
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_COMMA) PORT_NAME("Left Left")
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_K) PORT_NAME("Left Down")
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("Left Up")
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_NAME("Right Right")
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_NAME("Right Left")
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_NAME("Right Down")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_NAME("Right Up")
INPUT_PORTS_END


void sv8000_state::machine_start()
{
	m_ag = 0;
	m_gm2 = 0;
	m_gm1 = 0;
	m_gm0 = 0;
	m_as = 0;
	m_css = 0;
	m_intext = 0;
	m_inv = 0;

	if (m_cart->exists())
		m_maincpu->space(AS_PROGRAM).install_read_handler(0x0000, 0x0fff, read8sm_delegate(FUNC(generic_slot_device::read_rom),(generic_slot_device*)m_cart));

	save_item(NAME(m_column));
	save_item(NAME(m_ag));
	save_item(NAME(m_gm2));
	save_item(NAME(m_gm1));
	save_item(NAME(m_gm0));
	save_item(NAME(m_as));
	save_item(NAME(m_css));
	save_item(NAME(m_intext));
	save_item(NAME(m_inv));
}


void sv8000_state::machine_reset()
{
	m_column = 0xff;
}


DEVICE_IMAGE_LOAD_MEMBER( sv8000_state::cart_load )
{
	uint32_t size = m_cart->common_get_size("rom");

	if (size != 0x1000)
	{
		image.seterror(IMAGE_ERROR_UNSPECIFIED, "Incorrect or not support cartridge size");
		return image_init_result::FAIL;
	}

	m_cart->rom_alloc(size, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE);
	m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom");

	return image_init_result::PASS;
}


READ8_MEMBER( sv8000_state::i8255_porta_r )
{
	//logerror("i8255_porta_r\n");
	return m_io_joy->read();
}


WRITE8_MEMBER( sv8000_state::i8255_porta_w )
{
	//logerror("i8255_porta_w: %02X\n", data);
}


READ8_MEMBER( sv8000_state::i8255_portb_r )
{
	uint8_t data = 0xff;

	//logerror("i8255_portb_r\n");

	if (!(m_column & 0x01))
	{
		data &= m_io_row0->read();
	}
	if (!(m_column & 0x02))
	{
		data &= m_io_row1->read();
	}
	if (!(m_column & 0x04))
	{
		data &= m_io_row2->read();
	}
	return data;
}


WRITE8_MEMBER( sv8000_state::i8255_portb_w )
{
	//logerror("i8255_portb_w: %02X\n", data);
}


READ8_MEMBER( sv8000_state::i8255_portc_r )
{
	//logerror("i8255_portc_r\n");
	return 0xff;
}


WRITE8_MEMBER( sv8000_state::i8255_portc_w )
{
	//logerror("i8255_portc_w: %02X\n", data);
	m_column = data;
}


READ8_MEMBER( sv8000_state::ay_port_a_r )
{
	uint8_t data = 0xff;

	//logerror("ay_port_a_r\n");
	return data;
}


READ8_MEMBER( sv8000_state::ay_port_b_r )
{
	uint8_t data = 0xff;

	//logerror("ay_port_b_r\n");
	return data;
}


// Possibly connected to S68047P for selecting text/graphics modes
// misvader:
// 0x42 01000010 set on normal text screen
// 0x5A 01011010 set for a 256x192 bit mapped screen 3KB in 6KB mode?
//
// spfire:
// 0x42 01000010 text
// 0x5A 01011010 graphics 3KB in 6KB mode?
//
// othello:
// 0x02 00000010 normal text screen
// 0x58 01011000 graphics 3KB in 6KB mode?
//
// gunprof:
// 0x00 00000000 text
// 0x38 00111000 graphics 3KB mode
//
// pacpac:
// 0x00 00000000 text
// 0x5A 01011010 graphics 3KB in 6KB mode?
//
// submar:
// 0x00 00000000 text
// 0x5A 01011010 graphics 3KB in 6KB mode?
//
// beamgala:
// 0x5A 01011010 graphics 3KB in 6KB mode?
//
WRITE8_MEMBER( sv8000_state::ay_port_a_w )
{
	//logerror("ay_port_a_w: %02X\n", data);

	// Lacking schematics, these are all wild guesses
	// Having bit 1 set makes black display as blue??
	m_ag = BIT(data, 4);
	m_gm2 = BIT(data, 6);
	m_gm1 = BIT(data, 3);
	m_gm0 = BIT(data, 3);
	m_css = m_ag;

	m_s68047p->ag_w( m_ag ? ASSERT_LINE : CLEAR_LINE );
	m_s68047p->gm2_w( m_gm2 ? ASSERT_LINE : CLEAR_LINE );
	m_s68047p->gm1_w( m_gm1 ? ASSERT_LINE : CLEAR_LINE );
	m_s68047p->gm0_w( m_gm0 ? ASSERT_LINE : CLEAR_LINE );
	m_s68047p->css_w( m_css ? ASSERT_LINE : CLEAR_LINE );
	m_s68047p->hack_black_becomes_blue( BIT(data, 1) );
}


WRITE8_MEMBER( sv8000_state::ay_port_b_w )
{
	//logerror("ay_port_b_w: %02X\n", data);
}

READ8_MEMBER( sv8000_state::mc6847_videoram_r )
{
	if (offset == ~0) return 0xff;

	if (m_ag)
	{
		if (m_gm2)
		{
			// 256 x 192 / 6KB
			offset = ((offset & 0x1fc0) >> 1) | (offset & 0x1f);
			return m_videoram[offset % 0xc00];
		}
		else
		{
			// 256 x 96 / 3KB
			return m_videoram[offset % 0xc00];
		}
	}

	// Standard text
	uint8_t data = m_videoram[offset % 0xc00];
	if (!data) data = 0x20; //bodge

	m_s68047p->inv_w((data & 0x80) ? ASSERT_LINE : CLEAR_LINE);

	return data;
}

void sv8000_state::sv8000(machine_config &config)
{
	/* basic machine hardware */
	Z80(config, m_maincpu, XTAL(10'738'635)/3);  /* Not verified */
	m_maincpu->set_addrmap(AS_PROGRAM, &sv8000_state::sv8000_mem);
	m_maincpu->set_addrmap(AS_IO, &sv8000_state::sv8000_io);
	m_maincpu->set_vblank_int("screen", FUNC(sv8000_state::irq0_line_hold));

	i8255_device &ppi(I8255(config, "i8255"));
	ppi.in_pa_callback().set(FUNC(sv8000_state::i8255_porta_r));
	ppi.out_pa_callback().set(FUNC(sv8000_state::i8255_porta_w));
	ppi.in_pb_callback().set(FUNC(sv8000_state::i8255_portb_r));
	ppi.out_pb_callback().set(FUNC(sv8000_state::i8255_portb_w));
	ppi.in_pc_callback().set(FUNC(sv8000_state::i8255_portc_r));
	ppi.out_pc_callback().set(FUNC(sv8000_state::i8255_portc_w));

	/* video hardware */
	// S68047P - Unknown whether the internal or an external character rom is used
	S68047(config, m_s68047p, XTAL(10'738'635)/3);  // Clock not verified
	m_s68047p->input_callback().set(FUNC(sv8000_state::mc6847_videoram_r));
	m_s68047p->set_screen("screen");

	SCREEN(config, "screen", SCREEN_TYPE_RASTER);

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
	ay8910_device &ay8910(AY8910(config, "ay8910", XTAL(10'738'635)/3/2));  /* Exact model and clock not verified */
	ay8910.port_a_read_callback().set(FUNC(sv8000_state::ay_port_a_r));
	ay8910.port_b_read_callback().set(FUNC(sv8000_state::ay_port_b_r));
	ay8910.port_a_write_callback().set(FUNC(sv8000_state::ay_port_a_w));
	ay8910.port_b_write_callback().set(FUNC(sv8000_state::ay_port_b_w));
	ay8910.add_route(ALL_OUTPUTS, "mono", 0.50);

	/* cartridge */
	generic_cartslot_device &cartslot(GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "sv8000_cart"));
	cartslot.set_must_be_loaded(true);
	cartslot.set_device_load(FUNC(sv8000_state::cart_load), this);

	/* software lists */
	SOFTWARE_LIST(config, "cart_list").set_original("sv8000");
}

/* ROM definition */
ROM_START( sv8000 )
	ROM_REGION( 0x1000, "maincpu", ROMREGION_ERASEFF )
ROM_END

/* Driver */

/*    YEAR  NAME    PARENT  COMPAT   MACHINE  INPUT   STATE         INIT        COMPANY   FULLNAME                            FLAGS */
CONS( 1979, sv8000, 0,      0,       sv8000,  sv8000, sv8000_state, empty_init, "Bandai", "Super Vision 8000 (TV Jack 8000)", 0 )