summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/lazercmd.cpp
blob: f78dd9488cd964065839c236c45de71eb74ea4d6 (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
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
// license:GPL-2.0+
// copyright-holders:Juergen Buchmueller
/***************************************************************************
  Lazer Command memory map (preliminary)

  driver by Juergen Buchmueller

  0000-0bff ROM

  1c00-1c1f RAM     CPU scratch pad is first 32 bytes of video RAM(not displayed)

  1c20-1eff RAM     video buffer
            xxxx    D0 - D5 character select
                    D6      horz line below character (row #9)
                    D7      vert line right of character (bit #0)

  1f00-1f03         R/W hardware

            1f00 W     audio channels
                    D4 gun fire
                    D5 explosion
                    D6 tank engine
                    D7 running man
            1f00 R     player 1 joystick
                    D0 up
                    D1 down
                    D2 right
                    D3 left

            1f01 W  D0 - D7 marker y position
            1f01 R     player 2 joystick
                    D0 up
                    D1 down
                    D2 right
                    D3 left

            1f02 W  D0 - D7 marker x position
            1f02 R     player 1 + 2 buttons
                    D0 button 1 player 2
                    D1 button 1 player 1
                    D2 button 2 player 2
                    D3 button 2 player 1

            1f03 W      attract mode
                    D0 toggle on attract mode
                       (attract mode switched off by coin detected)
                    D4 clear coin detected toggle
            1f03 R      coinage, coin detected and start buttons
                    D0 coin 1/2 (DIP switch 4)
                    D1 start 'expert'
                    D2 start 'novice'
                    D3 coin detected

  1f04-1f07         Read only hardware

            1f04 R     vertical scan counter
                    D0 60 Hz
                    D1 120 Hz
                    D2 240 Hz
                    D3 480 Hz

            1f05 R     vertical scan counter
                    D0 7.860 KHz
                    D1 3.960 KHz
                    D2 1.980 KHz
                    D3 960 Hz

            1f06 R  D0 - D7 readback of marker x position

            1f07 R  D0 - D7 readback of marker y position

  I/O ports:

  'data'         R          game time
                    D0 - D1 60,90,120,180 seconds (DIP switch 1 - 2)

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

/***************************************************************************
  Meadows Lanes memory map (preliminary)

  0000-0bff ROM

  0c00-0c1f RAM     CPU scratch pad is first 32 bytes of video RAM(not displayed)

  0c20-0eff RAM     video buffer
            xxxx    D0 - D5 character select
                    D6      horz line below character (row #9)
                    D7      vert line right of character (bit #0)

  1000-17ff ROM

  1f00-1f03         R/W hardware

            1f00 W     audio control bits
                    D0 - D3 not used
                    D4 bowl and hit
                    D5 hit
                    D6 - D7 not used
            1f00 R     bowl ball
                    D0 fast
                    D1 slow
                       joystick
                    D2 right
                    D3 left

            1f01 W  D0 - D7 marker y position
            1f01 R     hook control
                    D0 left
                    D1 right
                    D2 - D3 not used

            1f02 W  D0 - D7 marker x position
            1f02 R  D0 - D3 not used

            1f03 W      attract mode
                    D0 toggle on attract mode
                       (attract mode switched off by coin detected)
                    D4 clear coin detected toggle
                    D5 can be jumpered to control inverse video
                    D6 - D7 not used
            1f03 R      coinage, coin detected and start buttons
                    D0 coin 1/2 (DIP switch 4)
                    D1 start
                    D2 not used
                    D3 coin detected

  1f04-1f07         Read only hardware

            1f04 R     vertical scan counter
                    D0 60 Hz
                    D1 120 Hz
                    D2 240 Hz
                    D3 480 Hz

            1f05 R     vertical scan counter
                    D0 7.860 KHz
                    D1 3.960 KHz
                    D2 1.980 KHz
                    D3 960 Hz

            1f06 R  D0 - D7 readback of marker x position

            1f07 R  D0 - D7 readback of marker y position

  I/O ports:

  'data'         R          game time
                    D0 time on     (DIP switch 1)
                    D1 3,5 seconds (DIP switch 2)

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

/***************************************************************************
  Bigfoot Bonkers memory map (preliminary)

  driver by Juergen Buchmueller

  0000-07ff ROM

  1c00-1c1f RAM     CPU scratch pad is first 32 bytes of video RAM(not displayed)

  1c20-1eff RAM     video buffer
            xxxx    D0 - D5 character select
                    D6      horz line below character (row #9)
                    D7      vert line right of character (bit #0)

  1f00-1f03         R/W hardware

            1f00 W     audio channels
                    D4 unused
                    D5 tone 1
                    D6 tone 2
                    D7 unused
            1f00 R     player 1 joystick
                    D0 up
                    D1 down
                    D2 right
                    D3 left

            1f01 W  D0 - D7 unused
            1f01 R     player 2 joystick
                    D0 up
                    D1 down
                    D2 right
                    D3 left

            1f02 W  D0 - D7 unused
            1f02 R     player 1 + 2 buttons
                    D0 unused
                    D1 unused
                    D2 unused
                    D3 unused

            1f03 W      attract mode
                    D0 toggle on attract mode
                       (attract mode switched off by coin detected)
                    D4 clear coin detected toggle
            1f03 R      coinage, coin detected and start buttons
                    D0 coin 1/2 (DIP switch 4)
                    D1 start
                    D2 start
                    D3 coin detected

  1f04-1f07         Read only hardware

            1f04 R     vertical scan counter
                    D0 60 Hz
                    D1 120 Hz
                    D2 240 Hz
                    D3 480 Hz

            1f05 R     vertical scan counter
                    D0 7.860 KHz
                    D1 3.960 KHz
                    D2 1.980 KHz
                    D3 960 Hz

            1f06 R  D0 - D7 unused

            1f07 R  D0 - D7 unused

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

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

  TODO
  - how does video invert exactly work? the hardware can control it,
    for example in bbonk death sequence
  - bbonk video on youtube shows a 1-pixel gap horizontally between tiles,
    maybe the characters are 9*10 or it differs per game
  - improve sound emulation

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

#include "emu.h"
#include "includes/lazercmd.h"

// color overlays, bbonk does not have an overlay
#include "lazercmd.lh"
#include "medlanes.lh"

#define MASTER_CLOCK XTAL_8MHz

/*************************************************************
 * Interrupt for the cpu
 * Fake something toggling the sense input line of the S2650
 * The rate should be at about 1 Hz
 *************************************************************/

TIMER_DEVICE_CALLBACK_MEMBER(lazercmd_state::lazercmd_timer)
{
	int scanline = param;

	if((scanline % 2) == 1)
		return;

	if (++m_timer_count >= 64 * 128)
	{
		m_timer_count = 0;
		m_sense_state ^= 1;
		m_maincpu->set_input_line(S2650_SENSE_LINE, m_sense_state ? ASSERT_LINE : CLEAR_LINE);
	}
}

TIMER_DEVICE_CALLBACK_MEMBER(lazercmd_state::bbonk_timer)
{
	int scanline = param;

	if((scanline % 2) == 1)
		return;

	if (++m_timer_count >= 64 * 128)
		m_timer_count = 0;
}

/*************************************************************
 *
 * IO port read/write
 *
 *************************************************************/

/* triggered by WRTC,r opcode */
WRITE8_MEMBER(lazercmd_state::lazercmd_ctrl_port_w)
{
}

/* triggered by REDC,r opcode */
READ8_MEMBER(lazercmd_state::lazercmd_ctrl_port_r)
{
	UINT8 data = 0;
	return data;
}

/* triggered by WRTD,r opcode */
WRITE8_MEMBER(lazercmd_state::lazercmd_data_port_w)
{
}

/* triggered by REDD,r opcode */
READ8_MEMBER(lazercmd_state::lazercmd_data_port_r)
{
	UINT8 data = ioport("DSW")->read() & 0x0f;
	return data;
}

WRITE8_MEMBER(lazercmd_state::lazercmd_hardware_w)
{
	switch (offset)
	{
		case 0: /* audio channels */
			m_dac_data = (data & 0x80) ^ ((data & 0x40) << 1) ^ ((data & 0x20) << 2) ^ ((data & 0x10) << 3);
			if (m_dac_data)
				m_dac->write_unsigned8(0xff);
			else
				m_dac->write_unsigned8(0);
			break;
		case 1: /* marker Y position */
			m_marker_y = data;
			break;
		case 2: /* marker X position */
			m_marker_x = data;
			break;
		case 3: /* D4 clears coin detected and D0 toggles on attract mode */
			m_attract = data;
			break;
	}
}

WRITE8_MEMBER(lazercmd_state::medlanes_hardware_w)
{
	switch (offset)
	{
		case 0: /* audio control */
			/* bits 4 and 5 are used to control a sound board */
			/* these could be used to control sound samples */
			/* at the moment they are routed through the dac */
			m_dac_data = ((data & 0x20) << 2) ^ ((data & 0x10) << 3);
			if (m_dac_data)
				m_dac->write_unsigned8(0xff);
			else
				m_dac->write_unsigned8(0);
			break;
		case 1: /* marker Y position */
			m_marker_y = data;
			break;
		case 2: /* marker X position */
			m_marker_x = data;
			break;
		case 3: /* D4 clears coin detected and D0 toggles on attract mode */
			m_attract = data;
			break;
	}
}

WRITE8_MEMBER(lazercmd_state::bbonk_hardware_w)
{
	switch (offset)
	{
		case 0: /* audio control */
			/* bits 4 and 5 are used to control a sound board */
			/* these could be used to control sound samples */
			/* at the moment they are routed through the dac */
			m_dac_data = ((data & 0x20) << 2) ^ ((data & 0x10) << 3);
			if (m_dac_data)
				m_dac->write_unsigned8(0xff);
			else
				m_dac->write_unsigned8(0);
			break;
		case 3: /* D5 inverts video?, D4 clears coin detected and D0 toggles on attract mode */
			m_attract = data;
			break;
	}
}

READ8_MEMBER(lazercmd_state::lazercmd_hardware_r)
{
	UINT8 data = 0;

	switch (offset)
	{
		case 0: /* player 1 joysticks */
			data = ioport("IN0")->read();
			break;
		case 1: /* player 2 joysticks */
			data = ioport("IN1")->read();
			break;
		case 2: /* player 1 + 2 buttons */
			data = ioport("IN3")->read();
			break;
		case 3: /* coin slot + start buttons */
			data = ioport("IN2")->read();
			break;
		case 4: /* vertical scan counter */
			data = ((m_timer_count & 0x10) >> 1) | ((m_timer_count & 0x20) >> 3) | ((m_timer_count & 0x40) >> 5) | ((m_timer_count & 0x80) >> 7);
			break;
		case 5: /* vertical scan counter */
			data = m_timer_count & 0x0f;
			break;
		case 6: /* 1f02 readback */
			data = m_marker_x;
			break;
		case 7: /* 1f01 readback */
			data = m_marker_y;
			break;
	}
	return data;
}


/*************************************************************
 *
 * Memory maps
 *
 *************************************************************/

static ADDRESS_MAP_START( lazercmd_map, AS_PROGRAM, 8, lazercmd_state )
	AM_RANGE(0x0000, 0x0bff) AM_ROM
	AM_RANGE(0x1c00, 0x1c1f) AM_RAM
	AM_RANGE(0x1c20, 0x1eff) AM_RAM AM_SHARE("videoram")
	AM_RANGE(0x1f00, 0x1f03) AM_WRITE(lazercmd_hardware_w)
	AM_RANGE(0x1f00, 0x1f07) AM_READ(lazercmd_hardware_r)
ADDRESS_MAP_END


static ADDRESS_MAP_START( medlanes_map, AS_PROGRAM, 8, lazercmd_state )
	AM_RANGE(0x0000, 0x0bff) AM_ROM
	AM_RANGE(0x1000, 0x17ff) AM_ROM
	AM_RANGE(0x1c00, 0x1c1f) AM_RAM
	AM_RANGE(0x1c20, 0x1eff) AM_RAM AM_SHARE("videoram")
	AM_RANGE(0x1f00, 0x1f03) AM_WRITE(medlanes_hardware_w)
	AM_RANGE(0x1f00, 0x1f07) AM_READ(lazercmd_hardware_r)
ADDRESS_MAP_END


static ADDRESS_MAP_START( bbonk_map, AS_PROGRAM, 8, lazercmd_state )
	AM_RANGE(0x0000, 0x0bff) AM_ROM
	AM_RANGE(0x1c00, 0x1c1f) AM_RAM
	AM_RANGE(0x1c20, 0x1eff) AM_RAM AM_SHARE("videoram")
	AM_RANGE(0x1f00, 0x1f03) AM_WRITE(bbonk_hardware_w)
	AM_RANGE(0x1f00, 0x1f07) AM_READ(lazercmd_hardware_r)
ADDRESS_MAP_END


static ADDRESS_MAP_START( lazercmd_portmap, AS_IO, 8, lazercmd_state )
	AM_RANGE(S2650_CTRL_PORT, S2650_CTRL_PORT) AM_READWRITE(lazercmd_ctrl_port_r, lazercmd_ctrl_port_w)
	AM_RANGE(S2650_DATA_PORT, S2650_DATA_PORT) AM_READWRITE(lazercmd_data_port_r, lazercmd_data_port_w)
ADDRESS_MAP_END



static INPUT_PORTS_START( lazercmd )
	PORT_START("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Game_Time ) ) PORT_DIPLOCATION("SW1:!1,!2")
	PORT_DIPSETTING(    0x00, "60 seconds" )
	PORT_DIPSETTING(    0x01, "90 seconds" )
	PORT_DIPSETTING(    0x02, "120 seconds" )
	PORT_DIPSETTING(    0x03, "180 seconds" )
	PORT_BIT( 0x98, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_DIPNAME( 0x20, 0x20, "Video Invert" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Marker Size" ) // jumper
	PORT_DIPSETTING(    0x00, "Small" )
	PORT_DIPSETTING(    0x40, "Large" )

	PORT_START("IN2")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_1C ) )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 ) PORT_NAME("Start Expert")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 ) PORT_NAME("Start Novice")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("IN3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

static INPUT_PORTS_START( medlanes )
	PORT_START("IN0")
	// note: real cpanel has 2 buttons for left/right, no joystick. 6 buttons total (excluding start)
	// layout is: move left, move right  -  throw fast, throw slow  -  hook right, hook left
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Throw Fast")
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("Throw Slow")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("Hook Left")
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("Hook Right")
	PORT_BIT( 0xfc, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x03, "Throw Time" ) PORT_DIPLOCATION("SW1:!1,!2")
	PORT_DIPSETTING(    0x01, "3 seconds" )
	PORT_DIPSETTING(    0x03, "5 seconds" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
//  PORT_DIPSETTING(    0x02, DEF_STR( Off ) ) // dupe
	PORT_BIT( 0x9C, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_DIPNAME( 0x20, 0x00, "Video Invert" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, "Marker Size" ) // jumper
	PORT_DIPSETTING(    0x00, "Small" )
	PORT_DIPSETTING(    0x40, "Large" )

	PORT_START("IN2")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_1C ) )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0xf4, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("IN3")
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

static INPUT_PORTS_START( bbonk )
	PORT_START("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x03, "Games to win" ) PORT_DIPLOCATION("SW1:!1,!2")
	PORT_DIPSETTING(    0x02, "2" )
	PORT_DIPSETTING(    0x03, "3" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_BIT( 0x9C, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_DIPNAME( 0x20, 0x00, "Video Invert" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) // marker is not used in this game

	PORT_START("IN2")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_1C ) )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("IN3")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW1:3")
	PORT_DIPSETTING(    0x00, "Partial" )
	PORT_DIPSETTING(    0x01, DEF_STR( On ) )
	PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END


static const gfx_layout charlayout =
{
	8, 10,                  /* 8*10 characters */
	4*64,                   /* 4 * 64 characters */
	1,                      /* 1 bit per pixel */
	{ 0 },                  /* no bitplanes */
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 },
	10*8                    /* every char takes 10 bytes */
};

static GFXDECODE_START( lazercmd )
	GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 2 )
GFXDECODE_END

PALETTE_INIT_MEMBER(lazercmd_state, lazercmd)
{
	palette.set_pen_color(0, rgb_t(0xb0, 0xb0, 0xb0)); /* white */
	palette.set_pen_color(1, rgb_t(0x00, 0x00, 0x00)); /* black */

	palette.set_pen_color(2, rgb_t(0x00, 0x00, 0x00)); /* black */
	palette.set_pen_color(3, rgb_t(0xb0, 0xb0, 0xb0)); /* white */

	palette.set_pen_color(4, rgb_t(0xff, 0xff, 0xff)); /* bright white */
}


void lazercmd_state::machine_start()
{
	save_item(NAME(m_marker_x));
	save_item(NAME(m_marker_y));
	save_item(NAME(m_timer_count));
	save_item(NAME(m_sense_state));
	save_item(NAME(m_dac_data));
	save_item(NAME(m_attract));
}

void lazercmd_state::machine_reset()
{
	m_marker_x = 0;
	m_marker_y = 0;
	m_timer_count = 0;
	m_sense_state = 0;
	m_dac_data = 0;
	m_attract = 0;
}


static MACHINE_CONFIG_START( lazercmd, lazercmd_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", S2650, MASTER_CLOCK/12) /* 666 kHz? */
/*  Main Clock is 8MHz divided by 12
    but memory and IO access is only possible
    within the line and frame blanking period
    thus requiring an extra loading of approx 3-5 */
	MCFG_CPU_PROGRAM_MAP(lazercmd_map)
	MCFG_CPU_IO_MAP(lazercmd_portmap)
	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", lazercmd_state, lazercmd_timer, "screen", 0, 1)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MCFG_SCREEN_SIZE(HORZ_RES * HORZ_CHR, VERT_RES * VERT_CHR + 16)
	MCFG_SCREEN_VISIBLE_AREA(0 * HORZ_CHR, HORZ_RES * HORZ_CHR - 1, 0 * VERT_CHR, (VERT_RES - 1) * VERT_CHR - 1)
	MCFG_SCREEN_UPDATE_DRIVER(lazercmd_state, screen_update_lazercmd)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_GFXDECODE_ADD("gfxdecode", "palette", lazercmd)
	MCFG_PALETTE_ADD("palette", 5)
	MCFG_PALETTE_INIT_OWNER(lazercmd_state, lazercmd)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_DAC_ADD("dac")
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END


static MACHINE_CONFIG_START( medlanes, lazercmd_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", S2650, MASTER_CLOCK/12) /* 666 kHz */
/*  Main Clock is 8MHz divided by 12
    but memory and IO access is only possible
    within the line and frame blanking period
    thus requiring an extra loading of approx 3-5 */
	MCFG_CPU_PROGRAM_MAP(medlanes_map)
	MCFG_CPU_IO_MAP(lazercmd_portmap)
	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", lazercmd_state, lazercmd_timer, "screen", 0, 1)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MCFG_SCREEN_SIZE(HORZ_RES * HORZ_CHR, VERT_RES * VERT_CHR)
	MCFG_SCREEN_VISIBLE_AREA(0 * HORZ_CHR, HORZ_RES * HORZ_CHR - 1, 0 * VERT_CHR, VERT_RES * VERT_CHR - 1)
	MCFG_SCREEN_UPDATE_DRIVER(lazercmd_state, screen_update_lazercmd)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_GFXDECODE_ADD("gfxdecode", "palette", lazercmd)
	MCFG_PALETTE_ADD("palette", 5)
	MCFG_PALETTE_INIT_OWNER(lazercmd_state, lazercmd)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_DAC_ADD("dac")
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END


static MACHINE_CONFIG_START( bbonk, lazercmd_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", S2650, MASTER_CLOCK/12) /* 666 kHz */
/*  Main Clock is 8MHz divided by 12
    but memory and IO access is only possible
    within the line and frame blanking period
    thus requiring an extra loading of approx 3-5 */
	MCFG_CPU_PROGRAM_MAP(bbonk_map)
	MCFG_CPU_IO_MAP(lazercmd_portmap)
	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", lazercmd_state, bbonk_timer, "screen", 0, 1)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MCFG_SCREEN_SIZE(HORZ_RES * HORZ_CHR, VERT_RES * VERT_CHR)
	MCFG_SCREEN_VISIBLE_AREA(0 * HORZ_CHR, HORZ_RES * HORZ_CHR - 1, 0 * VERT_CHR, (VERT_RES - 1) * VERT_CHR - 1)
	MCFG_SCREEN_UPDATE_DRIVER(lazercmd_state, screen_update_lazercmd)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_GFXDECODE_ADD("gfxdecode", "palette", lazercmd)
	MCFG_PALETTE_ADD("palette", 5)
	MCFG_PALETTE_INIT_OWNER(lazercmd_state, lazercmd)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_DAC_ADD("dac")
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END

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

  Game driver(s)

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

ROM_START( lazercmd )
	ROM_REGION( 0x0c00, "maincpu", ROMREGION_INVERT ) /* 32K cpu, 4K for ROM/RAM */
	ROM_LOAD_NIB_HIGH( "lc.e5", 0x0000, 0x0400, CRC(56dc7a40) SHA1(1324d5d6a44d7314723a0b5745d89f8e27f49d25) )
	ROM_LOAD_NIB_LOW(  "lc.f5", 0x0000, 0x0400, CRC(fc5b38a4) SHA1(bff670d7b78c6b9324d2bf4b2d8a4f9dbfe82158) )
	ROM_LOAD_NIB_HIGH( "lc.e6", 0x0400, 0x0400, CRC(b1ef0aa2) SHA1(3edeaa4d4f4e18536066898284d430a1ac00512e) )
	ROM_LOAD_NIB_LOW(  "lc.f6", 0x0400, 0x0400, CRC(26eaee21) SHA1(9c0a4a22abb0b0466378f067ef52a45f86cc4369) )
	ROM_LOAD_NIB_HIGH( "lc.e7", 0x0800, 0x0400, CRC(8e6ffc97) SHA1(d5243ce88585db91573b6586d3d47d13b5b473c8) )
	ROM_LOAD_NIB_LOW(  "lc.f7", 0x0800, 0x0400, CRC(9ec3534d) SHA1(98f15c5828ad2743bf205f71b8e69abd4db78a58) )

	ROM_REGION( 0x0c00, "gfx1", 0 )
	ROM_LOAD( "lc.b8", 0x0a00, 0x0200, CRC(6d708edd) SHA1(85a45a292eb7bca288b06a118658bf754f828a92) )
ROM_END

ROM_START( medlanes )
	ROM_REGION( 0x1800, "maincpu", ROMREGION_INVERT ) /* 32K cpu, 4K for ROM/RAM */
	ROM_LOAD_NIB_HIGH( "medlanes.2a", 0x0000, 0x0400, CRC(9c77566a) SHA1(60e1820012b47da8b86d54f00b6f60d2d0123745) )
	ROM_LOAD_NIB_LOW(  "medlanes.3a", 0x0000, 0x0400, CRC(22bc56a6) SHA1(7444170c19274d9d889df61796e6f61af2361f3e) )
	ROM_LOAD_NIB_HIGH( "medlanes.2b", 0x0400, 0x0400, CRC(7841b1a9) SHA1(80621d30995dad42ae44c62494922ca8b75415cf) )
	ROM_LOAD_NIB_LOW(  "medlanes.3b", 0x0400, 0x0400, CRC(6616dbef) SHA1(9506177315883b7d87a9bfada712ddeea12fd446) )
	ROM_LOAD_NIB_HIGH( "medlanes.2c", 0x0800, 0x0400, CRC(a359b5b8) SHA1(dbc3c286951c50e3465132fc0d6054f06026425d) )
	ROM_LOAD_NIB_LOW(  "medlanes.3c", 0x0800, 0x0400, CRC(b3db0f3d) SHA1(57c28a54f7a1f17df3a24b61dd0cf37f9f6bc7d8) )
	ROM_LOAD_NIB_HIGH( "medlanes.1a", 0x1000, 0x0400, CRC(0d57c596) SHA1(f3ce4802fc777c57f75fe691c93b7062903bdf06) )
	ROM_LOAD_NIB_LOW(  "medlanes.4a", 0x1000, 0x0400, CRC(30d495e9) SHA1(4f2414bf60ef91093bedf5e9ae16833e9e135aa7) )
	ROM_LOAD_NIB_HIGH( "medlanes.1b", 0x1400, 0x0400, CRC(1d451630) SHA1(bf9de3096e98685355c906ab7e1dc2628dce79d6) )
	ROM_LOAD_NIB_LOW(  "medlanes.4b", 0x1400, 0x0400, CRC(a4abb5db) SHA1(a20da872b0f7d6b16b9551233af4269db9d1b55f) )

	ROM_REGION( 0x0c00, "gfx1", 0 )
	ROM_LOAD( "medlanes.8b", 0x0a00, 0x0200, CRC(44e5de8f) SHA1(fc797fa137f0c11a15caf9c0013aac668fd69a3c) )
ROM_END


ROM_START( bbonk )
	ROM_REGION( 0x0c00, "maincpu", ROMREGION_INVERT ) /* 32K cpu, 4K for ROM/RAM */
	ROM_LOAD_NIB_HIGH( "bbonk.e5", 0x0000, 0x0400, CRC(d032baa0) SHA1(09cba16f6a2b7d8a8c501db639bd5eeefb63dc0f) )
	ROM_LOAD_NIB_LOW(  "bbonk.f5", 0x0000, 0x0400, CRC(748e8c7f) SHA1(99e4e182ee41c246e31f656411a9f09d7b617f92) )
	ROM_LOAD_NIB_HIGH( "bbonk.e6", 0x0400, 0x0400, CRC(71df0e25) SHA1(c2f78490816add1296923861a89df15be9822fed) )
	ROM_LOAD_NIB_LOW(  "bbonk.f6", 0x0400, 0x0400, CRC(5ce183ed) SHA1(7c78dfa463a37605e8423104426af2f5906fae24) )

	ROM_REGION( 0x0c00, "gfx1", 0 )
	ROM_LOAD( "bbonk.b8", 0x0a00, 0x0200, CRC(5ac34260) SHA1(7c2b1e378d2b9fed27117f9adab1381507f5d554) )
ROM_END


DRIVER_INIT_MEMBER(lazercmd_state,lazercmd)
{
	int i, y;
	UINT8 *gfx = memregion("gfx1")->base();

/******************************************************************
 * To show the maze bit #6 and #7 of the video ram are used.
 * Bit #7: add a vertical line to the right of the character
 * Bit #6: add a horizontal line below the character
 * The video logic generates 10 lines per character row, but the
 * character generator only contains 8 rows, so we expand the
 * font to 8x10.
 ******************************************************************/
	for (i = 0; i < 0x40; i++)
	{
		UINT8 *d = &gfx[0 * 64 * 10 + i * VERT_CHR];
		UINT8 *s = &gfx[4 * 64 * 10 + i * VERT_FNT];

		for (y = 0; y < VERT_CHR; y++)
		{
			d[0 * 64 * 10] = (y < VERT_FNT) ? *s++ : 0xff;
			d[1 * 64 * 10] = (y == VERT_CHR - 1) ? 0 : *d;
			d[2 * 64 * 10] = *d & 0xfe;
			d[3 * 64 * 10] = (y == VERT_CHR - 1) ? 0 : *d & 0xfe;
			d++;
		}
	}
}



GAMEL( 1976, lazercmd, 0, lazercmd, lazercmd, lazercmd_state, lazercmd, ROT0, "Meadows Games, Inc.", "Lazer Command", MACHINE_SUPPORTS_SAVE, layout_lazercmd )
GAMEL( 1977, medlanes, 0, medlanes, medlanes, lazercmd_state, lazercmd, ROT0, "Meadows Games, Inc.", "Meadows Lanes", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE, layout_medlanes )
GAME ( 1976, bbonk,    0, bbonk,    bbonk,    lazercmd_state, lazercmd, ROT0, "Meadows Games, Inc.", "Bigfoot Bonkers", MACHINE_SUPPORTS_SAVE )