summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/apf.c
blob: 3f5096d48d2484dd66f3c111786ce6ebaba4b1b3 (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
/******************************************************************************

driver by ?

PeT   around February 2008:
 added apfm1000 cartridge loading
 fixed apfm1000 pads
 added apf video mode


APF M1000/MP1000 and Imagination Machine
----------------------------------------
- The M1000 contains the video RAM, ROM, CPU, PIA0, handsets, Video and cart slot, and thus was a TV Game computer.
- The MPA-10 was a base unit containing the main keyboard, custom cassette recorder, 8k RAM and PIA1.
- When the two were joined, they formed the Imagination Machine.
- Although the BASIC cart could be plugged into the M1000, it could not be used as it needs the main keyboard.
- BB-01 Building Block - provides 4 cart slots. Includes a RS-232 cart for a printer or modem.
- R8-K 8K RAM Expansion cart.
- FI-100 Minifloppy Disk Interface Cartridge - drives 1 or 2 D100-0 floppy drives on AS-400 bus.
- D100-0 Floppy drive 5 1/4"
- A cassette program must be loaded on the same memory size it was saved from. Since the standard machine
  had 8K, almost all tapes require this exact amount of RAM to be present
- The cart-slot is physically the same as the Arcadia 2001.


RAM switch
----------
- The M1000 only had available the 1K video ram (0000-03FF)
- Space Destroyer needs more, so it includes another 1K in the cart
- The MPA-10 base includes 8K of RAM (A000-BFFF) (-ram 8K)
- A very few games need 16K which requires hacking the pcb (-ram 16K)
- Basic will work with 8K or 16K.

- On the M1000, ram options (8K and 16K) are ignored.
- On the IMAG, ram options (8K and 16K) work.


Status of cart-based games
--------------------------
backgammon - works, needs offset of 0x120, bottom line is coming from 0x3E0, should be 0x380
baseball - works, needs offset of 0x200, some bad colours
basic - works in apfimag only (as designed)
blackjack - works, some bad colours
bowling - works
boxing - works
brickdown - works
columns - runs but seems to be buggy
casino - appears to work (need instructions)
catena - works
hangman - works
pinball - works
movblock - works
rocket patrol - works, some bad colours
space destroyer - works
ufo - works


ToDo:
-----
- When pasting a large program, characters can be lost
- Some bad colours or graphics
- Tape loading is not very reliable
- Add back the disk support when we can get some info on it
  (6600, 6500-6503 wd179x disc controller? 6400, 6401)
- Need disk-based software


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

#include "emu.h"
#include "cpu/m6800/m6800.h"
#include "video/mc6847.h"
#include "sound/speaker.h"
#include "sound/wave.h"
#include "machine/6821pia.h"
#include "machine/wd17xx.h"
#include "imagedev/flopdrv.h"
#include "formats/basicdsk.h"
#include "imagedev/cassette.h"
#include "imagedev/cartslot.h"
#include "formats/apf_apt.h"
#include "machine/ram.h"


class apf_state : public driver_device
{
public:
	apf_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_has_cart_ram(false)
		, m_p_videoram(*this, "videoram")
		, m_maincpu(*this, "maincpu")
		, m_ram(*this, RAM_TAG)
		, m_crtc(*this, "mc6847")
		, m_speaker(*this, "speaker")
		, m_pia0(*this, "pia0")
		, m_pia1(*this, "pia1")
		, m_cass(*this, "cassette")
		, m_fdc(*this, "fdc")
	{ }

	DECLARE_READ8_MEMBER(videoram_r);
	DECLARE_READ8_MEMBER(pia0_porta_r);
	DECLARE_WRITE8_MEMBER(pia0_portb_w);
	DECLARE_WRITE_LINE_MEMBER(pia0_ca2_w);
	DECLARE_READ8_MEMBER(pia1_porta_r);
	DECLARE_READ8_MEMBER(pia1_portb_r);
	DECLARE_WRITE8_MEMBER(pia1_portb_w);
	DECLARE_WRITE8_MEMBER(apf_dischw_w);
	DECLARE_READ8_MEMBER(serial_r);
	DECLARE_WRITE8_MEMBER(serial_w);
	DECLARE_DEVICE_IMAGE_LOAD_MEMBER(apf_cart);
private:
	UINT8 m_latch;
	UINT8 m_keyboard_data;
	UINT8 m_pad_data;
	UINT8 m_portb;
	bool m_ca2;
	bool m_has_cart_ram;
	virtual void machine_reset();
	required_shared_ptr<UINT8> m_p_videoram;
	required_device<m6800_cpu_device> m_maincpu;
	required_device<ram_device> m_ram;
	required_device<mc6847_base_device> m_crtc;
	required_device<speaker_sound_device> m_speaker;
	required_device<pia6821_device> m_pia0;
	optional_device<pia6821_device> m_pia1;
	optional_device<cassette_image_device> m_cass;
	optional_device<wd1770_device> m_fdc;
	dynamic_buffer m_cart_ram;
};


READ8_MEMBER( apf_state::videoram_r )
{
	if BIT(m_pad_data, 7) // AG line
	{
		// Need the cpu and crtc to be locked together for proper graphics
		// This is a hack to fix Rocket Patrol and Blackjack
		if (BIT(m_pad_data, 6) && !m_has_cart_ram)
			offset -= 0x400;

		// This is a hack to fix Space Destroyer
		if (BIT(m_pad_data, 6) && m_has_cart_ram)
			offset -= 0x120;

		UINT16 part1 = offset & 0x1f;
		UINT16 part2 = (offset & 0x1e0) >> 5;
		UINT16 part3 = (offset & 0x1e00) >> 4;
		if (m_ca2) m_latch = m_p_videoram[part3 | part1]; // get chr
		m_crtc->css_w(BIT(m_latch, 6));
		UINT16 latch = (m_latch & 0x1f) << 4;
		return m_p_videoram[latch | part2 | 0x200]; // get gfx
	}
	else
	{
		UINT8 data = m_p_videoram[(offset & 0x1ff) | 0x200];
		if (m_ca2) m_crtc->css_w(BIT(data, 6));
		m_crtc->inv_w(BIT(data, 6));
		m_crtc->as_w(BIT(data, 7));
		return data;
	}
}

READ8_MEMBER( apf_state::pia0_porta_r )
{
	UINT8 data = 0xff;

	if (!BIT(m_pad_data, 3))
		data &= ioport("joy3")->read();
	if (!BIT(m_pad_data, 2))
		data &= ioport("joy2")->read();
	if (!BIT(m_pad_data, 1))
		data &= ioport("joy1")->read();
	if (!BIT(m_pad_data, 0))
		data &= ioport("joy0")->read();

	return data;
}

WRITE8_MEMBER( apf_state::pia0_portb_w )
{
	/* bit 7..6 video control */
	m_crtc->ag_w(BIT(data, 7));
	m_crtc->gm0_w(BIT(data, 6));

	/* bit 3..0 keypad line select */
	m_pad_data = data;
}

WRITE_LINE_MEMBER( apf_state::pia0_ca2_w )
{
	m_ca2 = state;
}

READ8_MEMBER( apf_state::pia1_porta_r )
{
	static const char *const keynames[] = { "key0", "key1", "key2", "key3", "key4", "key5", "key6", "key7" };
	return ioport(keynames[m_keyboard_data])->read();
}

READ8_MEMBER( apf_state::pia1_portb_r )
{
	UINT8 data = m_portb;

	if (m_cass->input() > 0.0038)
		data |= 0x80;

	return data;
}


WRITE8_MEMBER( apf_state::pia1_portb_w )
{
	/* bits 2..0 = keyboard line */
	/* bit 3 = cass audio enable */
	/* bit 4 = cassette motor */
	/* bit 5 = /cass write enable */
	/* bit 6 = cass out */
	/* bit 7 = cass in */

	m_portb = data & 0x7f;
	m_keyboard_data = data & 7;

	m_cass->change_state(BIT(data, 4) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);

	if (!BIT(data, 5))
		m_cass->output(BIT(data, 6) ? -1.0 : 1.0);
}

void apf_state::machine_reset()
{
	address_space &space = m_maincpu->space(AS_PROGRAM);
	m_portb = 0;
	m_ca2 = 0;

	if (m_cass) // apfimag only
	{
		m_cass->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);

		/* if we specified 8K of RAM, delete the extended RAM */
		if (m_ram->size() < 16*1024)
			space.unmap_readwrite(0xc000, 0xdfff);
		// this is a hack to get 'columns' to work. It misbehaves if a000-a003 are all zero
		else
			space.write_byte(0xa002, 0xe5);
	}

	/* Space Destroyer has 1K of on-cart RAM */
	if (m_has_cart_ram)
	{
		space.unmap_readwrite(0x9800, 0x9fff);
		space.install_ram(0x9800, 0x9bff, m_cart_ram);
	}
}

WRITE8_MEMBER( apf_state::apf_dischw_w)
{
	/* bit 3 is index of drive to select */
	UINT8 drive = BIT(data, 3);

	m_fdc->set_drive(drive);
	floppy_image_legacy *floppy;
	floppy = floppy_get_device(machine(), drive)->flopimg_get_image();
	floppy_get_device(machine(), drive)->floppy_mon_w((floppy != NULL) ? 0 : 1);
	floppy_get_device(machine(), drive)->floppy_drive_set_ready_state((floppy != NULL) ? 1 : 0,0);


	logerror("disc w %04x %04x\n",offset,data);
}

READ8_MEMBER( apf_state::serial_r)
{
	logerror("serial r %04x\n",offset);
	return 0;
}

WRITE8_MEMBER( apf_state::serial_w)
{
	logerror("serial w %04x %04x\n",offset,data);
}

static ADDRESS_MAP_START( apfm1000_map, AS_PROGRAM, 8, apf_state )
	AM_RANGE( 0x0000, 0x03ff) AM_MIRROR(0x1c00) AM_RAM AM_SHARE("videoram")
	AM_RANGE( 0x2000, 0x3fff) AM_MIRROR(0x1ffc) AM_DEVREADWRITE("pia0", pia6821_device, read, write)
	AM_RANGE( 0x4000, 0x4fff) AM_MIRROR(0x1000) AM_ROM AM_REGION("roms", 0)
	AM_RANGE( 0x6800, 0x7fff) AM_ROM AM_REGION("cart", 0x2000)
	AM_RANGE( 0x8000, 0x9fff) AM_ROM AM_REGION("cart", 0)
	AM_RANGE( 0xe000, 0xefff) AM_MIRROR(0x1000) AM_ROM AM_REGION("roms", 0)
ADDRESS_MAP_END

static ADDRESS_MAP_START( apfimag_map, AS_PROGRAM, 8, apf_state )
	AM_IMPORT_FROM(apfm1000_map)
	AM_RANGE( 0x6000, 0x63ff) AM_MIRROR(0x03fc) AM_DEVREADWRITE("pia1", pia6821_device, read, write)
	// These need to be confirmed, disk does not work
	AM_RANGE( 0x6400, 0x64ff) AM_READWRITE(serial_r, serial_w)
	AM_RANGE( 0x6500, 0x6503) AM_DEVREADWRITE("fdc", fd1771_device, read, write)
	AM_RANGE( 0x6600, 0x6600) AM_WRITE(apf_dischw_w)
	AM_RANGE( 0xa000, 0xbfff) AM_RAM // standard
	AM_RANGE( 0xc000, 0xdfff) AM_RAM // expansion
ADDRESS_MAP_END


/* Each controller has these features:

   1 8-way joystick
   1 big red fire button on the upper side
   12-keys keypad with the following layout

   7 8 9 0
   4 5 6 Cl
   1 2 3 En

   On the control panel of the M-1000 there are two big buttons: a Reset key and the Power switch

   Reference: http://www.nausicaa.net/~lgreenf/apfpage2.htm
*/

static INPUT_PORTS_START( apfm1000 )

/*
       This simple Basic program can be used to read the joysticks and the keyboard:

       10 PRINT KEY$(n);
       20 GOTO 10

       where n = 0, 1 or 2 - 0 = keyboard, 1,2 = joysticks #1 and #2

       When reading the keyboard KEY$(0) returns the character associated to the key, with the
       following exceptions:

       Ctrl =    CHR$(1)
       Rept =    CHR$(2)
       Here Is = CHR$(4)
       Rubout =  CHR$(8)

       When reading the joysticks, KEY$() = "N", "S", "E", "W" for the directions
                                            "0" - "9" for the keypad digits
                                            "?" for "Cl"
                                            "!" for "En"


  ? player right is player 1
*/

	/* line 0 */
	PORT_START("joy0")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 1") PORT_CODE(KEYCODE_1) PORT_PLAYER(2)
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 0") PORT_CODE(KEYCODE_0) PORT_PLAYER(2)
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 4") PORT_CODE(KEYCODE_4) PORT_PLAYER(2)
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 7") PORT_CODE(KEYCODE_7) PORT_PLAYER(2)
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 1") PORT_CODE(KEYCODE_1_PAD) PORT_PLAYER(1)
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 0") PORT_CODE(KEYCODE_0_PAD) PORT_PLAYER(1)
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 4") PORT_CODE(KEYCODE_4_PAD) PORT_PLAYER(1)
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 7") PORT_CODE(KEYCODE_7_PAD) PORT_PLAYER(1)

	/* line 1 */
	PORT_START("joy1")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_NAME("PAD 1/RIGHT down") PORT_PLAYER(2) PORT_8WAY
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_NAME("PAD 1/RIGHT right") PORT_PLAYER(2) PORT_8WAY
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_NAME("PAD 1/RIGHT up") PORT_PLAYER(2) PORT_8WAY
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_NAME("PAD 1/RIGHT left") PORT_PLAYER(2) PORT_8WAY
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_NAME("PAD 2/LEFT down") PORT_PLAYER(1) PORT_8WAY
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_NAME("PAD 2/LEFT right") PORT_PLAYER(1) PORT_8WAY
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_NAME("PAD 2/LEFT up") PORT_PLAYER(1) PORT_8WAY
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_NAME("PAD 2/LEFT left") PORT_PLAYER(1) PORT_8WAY

	/* line 2 */
	PORT_START("joy2")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 3") PORT_CODE(KEYCODE_3) PORT_PLAYER(2)
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT clear") PORT_CODE(KEYCODE_DEL) PORT_PLAYER(2)
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 6") PORT_CODE(KEYCODE_6) PORT_PLAYER(2)
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 9") PORT_CODE(KEYCODE_9) PORT_PLAYER(2)
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 3") PORT_CODE(KEYCODE_3_PAD) PORT_PLAYER(1)
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT clear") PORT_CODE(KEYCODE_DEL_PAD) PORT_PLAYER(1)
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 6") PORT_CODE(KEYCODE_6_PAD) PORT_PLAYER(1)
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 9") PORT_CODE(KEYCODE_9_PAD) PORT_PLAYER(1)

	/* line 3 */
	PORT_START("joy3")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 2") PORT_CODE(KEYCODE_2) PORT_PLAYER(2)
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT enter/fire") PORT_CODE(KEYCODE_ENTER) PORT_PLAYER(2)
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 5") PORT_CODE(KEYCODE_5) PORT_PLAYER(2)
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 1/RIGHT 8") PORT_CODE(KEYCODE_8) PORT_PLAYER(2)
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 2") PORT_CODE(KEYCODE_2_PAD) PORT_PLAYER(1)
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT enter/fire") PORT_CODE(KEYCODE_ENTER_PAD) PORT_PLAYER(1)
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 5") PORT_CODE(KEYCODE_5_PAD) PORT_PLAYER(1)
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("PAD 2/LEFT 8") PORT_CODE(KEYCODE_8_PAD) PORT_PLAYER(1)
INPUT_PORTS_END


static INPUT_PORTS_START( apfimag )

	PORT_INCLUDE( apfm1000 )

	/* Reference: http://www.nausicaa.net/~lgreenf/apfpage2.htm */

	/* keyboard line 0 */
	PORT_START("key0")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X")               PORT_CODE(KEYCODE_X)          PORT_CHAR('X')
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z")               PORT_CODE(KEYCODE_Z)          PORT_CHAR('Z')
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q       IF")      PORT_CODE(KEYCODE_Q)          PORT_CHAR('Q')
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2   \"    LET")   PORT_CODE(KEYCODE_2)          PORT_CHAR('2') PORT_CHAR('\"')
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A")               PORT_CODE(KEYCODE_A)          PORT_CHAR('A')
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1   !   GOSUB")   PORT_CODE(KEYCODE_1)          PORT_CHAR('1') PORT_CHAR('!')
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W       STEP")    PORT_CODE(KEYCODE_W)          PORT_CHAR('W')
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S")               PORT_CODE(KEYCODE_S)          PORT_CHAR('S')

	/* keyboard line 1 */
	PORT_START("key1")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C")               PORT_CODE(KEYCODE_C)          PORT_CHAR('C')
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V")               PORT_CODE(KEYCODE_V)          PORT_CHAR('V')
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R       READ")    PORT_CODE(KEYCODE_R)          PORT_CHAR('R')
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3   #   DATA")    PORT_CODE(KEYCODE_3)          PORT_CHAR('3') PORT_CHAR('#')
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F")               PORT_CODE(KEYCODE_F)          PORT_CHAR('F')
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4   $   INPUT")   PORT_CODE(KEYCODE_4)          PORT_CHAR('4') PORT_CHAR('$')
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E       STOP")    PORT_CODE(KEYCODE_E)          PORT_CHAR('E')
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D")               PORT_CODE(KEYCODE_D)          PORT_CHAR('D')

	/* keyboard line 2 */
	PORT_START("key2")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N   ^")           PORT_CODE(KEYCODE_N)          PORT_CHAR('N') PORT_CHAR('^')
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B")               PORT_CODE(KEYCODE_B)          PORT_CHAR('B')
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T       NEXT")    PORT_CODE(KEYCODE_T)          PORT_CHAR('T')
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6   &   FOR")     PORT_CODE(KEYCODE_6)          PORT_CHAR('6') PORT_CHAR('&')
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G")               PORT_CODE(KEYCODE_G)          PORT_CHAR('G')
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5   %   DIM")     PORT_CODE(KEYCODE_5)          PORT_CHAR('5') PORT_CHAR('%')
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y       PRINT")   PORT_CODE(KEYCODE_Y)          PORT_CHAR('Y')
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H")               PORT_CODE(KEYCODE_H)          PORT_CHAR('H')

	/* keyboard line 3 */
	PORT_START("key3")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M   ]")           PORT_CODE(KEYCODE_M)          PORT_CHAR('M') PORT_CHAR(']')
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(",   <")           PORT_CODE(KEYCODE_COMMA)      PORT_CHAR(',') PORT_CHAR('<')
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I       LIST")    PORT_CODE(KEYCODE_I)          PORT_CHAR('I')
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7   '   RETURN")  PORT_CODE(KEYCODE_7)          PORT_CHAR('7') PORT_CHAR('\'')
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K   [")           PORT_CODE(KEYCODE_K)          PORT_CHAR('K') PORT_CHAR('[')
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8   (   THEN")    PORT_CODE(KEYCODE_8)          PORT_CHAR('8') PORT_CHAR('(')
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U       END")     PORT_CODE(KEYCODE_U)          PORT_CHAR('U')
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J")               PORT_CODE(KEYCODE_J)          PORT_CHAR('J')

	/* keyboard line 4 */
	PORT_START("key4")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/   ?")           PORT_CODE(KEYCODE_SLASH)      PORT_CHAR('/') PORT_CHAR('?')
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(".   >")           PORT_CODE(KEYCODE_STOP)       PORT_CHAR('.') PORT_CHAR('>')
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O   _   REM")     PORT_CODE(KEYCODE_O)          PORT_CHAR('O') PORT_CHAR('_')
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0       GOTO")    PORT_CODE(KEYCODE_0)          PORT_CHAR('0')
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L   \\")          PORT_CODE(KEYCODE_L)          PORT_CHAR('L') PORT_CHAR('\\')
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9   )   ON")      PORT_CODE(KEYCODE_9)          PORT_CHAR('9') PORT_CHAR(')')
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P   @   USING")   PORT_CODE(KEYCODE_P)          PORT_CHAR('P') PORT_CHAR('@')
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(";   +")           PORT_CODE(KEYCODE_COLON)      PORT_CHAR(';') PORT_CHAR('+')

	/* keyboard line 5 */
	PORT_START("key5")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space")           PORT_CODE(KEYCODE_SPACE)      PORT_CHAR(32)
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(":   *")           PORT_CODE(KEYCODE_MINUS)      PORT_CHAR(':') PORT_CHAR('*')
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return")          PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(13)
	PORT_BIT(0x08, 0x08, IPT_UNUSED)
	PORT_BIT(0x10, 0x10, IPT_UNUSED)
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("-   =   RESTORE") PORT_CODE(KEYCODE_EQUALS)     PORT_CHAR('-') PORT_CHAR('=')
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Line Feed")       PORT_CODE(KEYCODE_OPENBRACE)  PORT_CHAR(10)
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Rubout")          PORT_CODE(KEYCODE_QUOTE)      PORT_CHAR(8)

	/* line 6 */
	PORT_START("key6")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift")     PORT_CODE(KEYCODE_RSHIFT) PORT_CODE(KEYCODE_LSHIFT)     PORT_CHAR(UCHAR_SHIFT_1)
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Esc")             PORT_CODE(KEYCODE_TAB)        PORT_CHAR(27)
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl")            PORT_CODE(KEYCODE_LCONTROL)   PORT_CHAR(UCHAR_SHIFT_2)
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Rept")            PORT_CODE(KEYCODE_ENTER)      PORT_CHAR(UCHAR_MAMEKEY(TAB))
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Break")           PORT_CODE(KEYCODE_BACKSLASH)  PORT_CHAR(UCHAR_MAMEKEY(DEL))
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Here Is")         PORT_CODE(KEYCODE_BACKSPACE)  PORT_CHAR(UCHAR_MAMEKEY(HOME))
	PORT_BIT(0x40, 0x40, IPT_UNUSED) // another X
	PORT_BIT(0x80, 0x80, IPT_UNUSED) // another Z

	/* line 7 */
	PORT_START("key7")
	PORT_BIT(0xff, 0xff, IPT_UNUSED)
INPUT_PORTS_END


DEVICE_IMAGE_LOAD_MEMBER( apf_state, apf_cart )
{
	UINT8 *ROM = memregion("cart")->base();
	UINT32 cart_size;
	
	if (image.software_entry() == NULL)
	{
		cart_size = image.length();
		if (cart_size > 0x3800)
		{
			logerror("%s extends beyond the expected size for an APF cart.\n", image.filename());
			return IMAGE_INIT_FAIL;
		}

		image.fread(ROM, cart_size);
		
		// attempt to identify Space Destroyer, which needs 1K of additional RAM
		if (cart_size == 0x1800)
		{
			m_has_cart_ram = true;
			m_cart_ram.resize(0x400);
		}
	}
	else
	{
		cart_size = image.get_software_region_length("rom");
		if (cart_size > 0x3800)
		{
			logerror("%s extends beyond the expected size for an APF cart.\n", image.filename());
			return IMAGE_INIT_FAIL;
		}

		memcpy(ROM, image.get_software_region("rom"), cart_size);

		if (image.get_software_region("ram"))
		{
			m_has_cart_ram = true;
			m_cart_ram.resize(image.get_software_region_length("ram"));
		}
	}
	
	return IMAGE_INIT_PASS;
}

static LEGACY_FLOPPY_OPTIONS_START(apfimag)
	LEGACY_FLOPPY_OPTION(apfimag, "apd", "APF disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
		HEADS([1])
		TRACKS([40])
		SECTORS([8])
		SECTOR_LENGTH([256])
		FIRST_SECTOR_ID([1]))
LEGACY_FLOPPY_OPTIONS_END

static const floppy_interface apfimag_floppy_interface =
{
	FLOPPY_STANDARD_5_25_SSDD_40,
	LEGACY_FLOPPY_OPTIONS_NAME(apfimag),
	NULL
};

static MACHINE_CONFIG_START( apfm1000, apf_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M6800, XTAL_3_579545MHz / 4 )  // divided by 4 in external clock circuit
	MCFG_CPU_PROGRAM_MAP(apfm1000_map)

	/* video hardware */
	MCFG_SCREEN_MC6847_NTSC_ADD("screen", "mc6847")

	MCFG_DEVICE_ADD("mc6847", MC6847_NTSC, XTAL_3_579545MHz)
	MCFG_MC6847_FSYNC_CALLBACK(DEVWRITELINE("pia0", pia6821_device, cb1_w))
	MCFG_MC6847_INPUT_CALLBACK(READ8(apf_state, videoram_r))
	MCFG_MC6847_FIXED_MODE(MC6847_MODE_GM2 | MC6847_MODE_GM1)
	// INTEXT = GND
	// other lines not connected

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")
	MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	/* Devices */
	MCFG_DEVICE_ADD("pia0", PIA6821, 0)
	MCFG_PIA_READPA_HANDLER(READ8(apf_state, pia0_porta_r))
	MCFG_PIA_WRITEPB_HANDLER(WRITE8(apf_state, pia0_portb_w))
	MCFG_PIA_CA2_HANDLER(WRITELINE(apf_state, pia0_ca2_w))
	MCFG_PIA_CB2_HANDLER(DEVWRITELINE("speaker", speaker_sound_device, level_w))
	MCFG_PIA_IRQA_HANDLER(DEVWRITELINE("maincpu", m6800_cpu_device, irq_line))
	MCFG_PIA_IRQB_HANDLER(DEVWRITELINE("maincpu", m6800_cpu_device, irq_line))

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("8K")
	MCFG_RAM_EXTRA_OPTIONS("16K")

	MCFG_CARTSLOT_ADD("cart")
	MCFG_CARTSLOT_INTERFACE("apfm1000_cart")
	MCFG_CARTSLOT_LOAD(apf_state, apf_cart)

	/* software lists */
	MCFG_SOFTWARE_LIST_ADD("cart_list","apfm1000")
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( apfimag, apfm1000 )
	MCFG_CPU_MODIFY( "maincpu" )
	MCFG_CPU_PROGRAM_MAP( apfimag_map)

	MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.15)

	MCFG_DEVICE_ADD("pia1", PIA6821, 0)
	MCFG_PIA_READPA_HANDLER(READ8(apf_state, pia1_porta_r))
	MCFG_PIA_READPB_HANDLER(READ8(apf_state, pia1_portb_r))
	MCFG_PIA_WRITEPB_HANDLER(WRITE8(apf_state, pia1_portb_w))

	MCFG_CASSETTE_ADD( "cassette" )
	MCFG_CASSETTE_FORMATS(apf_cassette_formats)
	MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY)
	
	MCFG_DEVICE_ADD("fdc", FD1771, 0)
	MCFG_WD17XX_DEFAULT_DRIVE2_TAGS

	MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(apfimag_floppy_interface)
MACHINE_CONFIG_END


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

  Game driver(s)

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

ROM_START(apfm1000)
	ROM_REGION(0x1000,"roms", 0)
	ROM_SYSTEM_BIOS( 0, "0", "Standard" )
	ROMX_LOAD("apf_4000.rom", 0x0000, 0x0800, CRC(cc6ac840) SHA1(1110a234bcad99bd0894ad44c591389d16376ca4), ROM_BIOS(1) )
	ROM_RELOAD(0x0800, 0x0800)

	ROM_SYSTEM_BIOS( 1, "trash", "Trash II" ) // In Rocket Patrol, the ships are replaced by garbage trucks
	ROMX_LOAD("trash-ii.bin", 0x0000, 0x1000, CRC(3bd8640a) SHA1(da4cd8163990adbc5acd3eab604b41e1066bb832), ROM_BIOS(2) )

	ROM_SYSTEM_BIOS( 2, "mod", "Mod Bios" ) // (c) 1982 W.Lunquist - In Basic, CALL 18450 to get a machine-language monitor
	ROMX_LOAD("mod_bios.bin", 0x0000, 0x1000, CRC(f320aba6) SHA1(9442349fca8b001a5765e2fe8b84db4ece7886c1), ROM_BIOS(3) )

	ROM_REGION(0x3800,"cart", ROMREGION_ERASEFF)
ROM_END

#define rom_apfimag rom_apfm1000

// old rom, has a bad byte at 0087.
//ROMX_LOAD("apf_4000.rom", 0x0000, 0x0800, CRC(2a331a33) SHA1(387b90882cd0b66c192d9cbaa3bec250f897e4f1), ROM_BIOS(1) )

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

  Game driver(s)

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

/*    YEAR  NAME     PARENT     COMPAT  MACHINE     INPUT      CLASS          INIT         COMPANY               FULLNAME */
COMP(1979, apfimag,  apfm1000,  0,      apfimag,    apfimag,   driver_device,  0,   "APF Electronics Inc", "APF Imagination Machine" , 0 )
CONS(1978, apfm1000, 0,         0,      apfm1000,   apfm1000,  driver_device,  0,   "APF Electronics Inc", "APF M-1000" , 0 )