summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/fp200.cpp
blob: bb8d027dc5597c4679b3e3522dd35f5b8a0240ba (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
// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************

    FP-200 (c) 1982 Casio

    preliminary driver by Angelo Salese

    TODO:
    - What's the LCDC type? Custom?
    - Unless I've missed something in the schems, this one shouldn't have any
      sound capability.
    - backup RAM.
    - Rewrite video emulation from scratch.

    Notes:
    - on start-up there's a "memory illegal" warning. Enter "RESET" command
      to initialize it (thanks to Takeda Toshiya for pointing this out).

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


#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"

static constexpr XTAL MAIN_CLOCK = 6.144_MHz_XTAL;

class fp200_state : public driver_device
{
public:
	fp200_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
	{ }

	void fp200(machine_config &config);

	DECLARE_INPUT_CHANGED_MEMBER(keyb_irq);

private:
	// devices
	required_device<i8085a_cpu_device> m_maincpu;
	uint8_t m_io_type;
	uint8_t *m_chargen;
	uint8_t m_keyb_mux;

	struct{
		uint8_t x;
		uint8_t y;
		uint8_t status;
		std::unique_ptr<uint8_t[]> vram;
		std::unique_ptr<uint8_t[]> attr;
	}m_lcd;
	uint8_t read_lcd_attr(uint16_t X, uint16_t Y);
	uint8_t read_lcd_vram(uint16_t X, uint16_t Y);
	void write_lcd_attr(uint16_t X, uint16_t Y,uint8_t data);
	void write_lcd_vram(uint16_t X, uint16_t Y,uint8_t data);

	// screen updates
	uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);

	uint8_t fp200_io_r(offs_t offset);
	void fp200_io_w(offs_t offset, uint8_t data);
	uint8_t fp200_lcd_r(offs_t offset);
	void fp200_lcd_w(offs_t offset, uint8_t data);
	uint8_t fp200_keyb_r(offs_t offset);
	void fp200_keyb_w(offs_t offset, uint8_t data);

	DECLARE_WRITE_LINE_MEMBER(sod_w);
	DECLARE_READ_LINE_MEMBER(sid_r);

	void fp200_palette(palette_device &palette) const;
	void fp200_io(address_map &map);
	void fp200_map(address_map &map);

	// driver_device overrides
	virtual void machine_start() override;
	virtual void machine_reset() override;

	virtual void video_start() override;
};

void fp200_state::video_start()
{
	m_lcd.vram = make_unique_clear<uint8_t[]>(20*64);
	m_lcd.attr = make_unique_clear<uint8_t[]>(20*64);
}

/* TODO: Very preliminary, I actually believe that the LCDC writes in a blitter fashion ... */
uint32_t fp200_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
{
	uint16_t l_offs, r_offs;

	bitmap.fill(0, cliprect);

	l_offs = 0;
	r_offs = 0;
	for(int y=cliprect.top(); y<cliprect.bottom(); y++) // FIXME: off-by-one?
	{
		for(int x=0;x<80;x++)
		{
			if(m_lcd.attr[x/8+y*20] == 0x50)
			{
				l_offs = (y & ~7);
				break;
			}
		}
	}

	for(int y=cliprect.top(); y<cliprect.bottom(); y++) // FIXME: off-by-one?
	{
		for(int x=80;x<160;x++)
		{
			if(m_lcd.attr[x/8+y*20] == 0x50)
			{
				r_offs = (y & ~7);
				break;
			}
		}
	}

	for(int y=cliprect.top(); y<cliprect.bottom(); y++) // FIXME: off-by-one?
	{
		for(int x=0;x<80;x++)
		{
			uint16_t yoffs;

			yoffs = y + l_offs;

			if(yoffs >= 64)
				yoffs -= 64;

			if(m_lcd.attr[x/8+yoffs*20] == 0x60 || m_lcd.attr[x/8+yoffs*20] == 0x50)
			{
				uint8_t vram,pix;

				vram = m_lcd.vram[x/8+yoffs*20];
				pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(yoffs & 7))) & 1;
				bitmap.pix16(y,x) = pix;
			}
			/*
			else if(m_lcd.attr[x/8+yoffs*20] == 0x40)
			{
			    uint8_t vram,pix;

			    vram = m_lcd.vram[x/8+yoffs*20];
			    pix = (vram) >> (7-(yoffs & 7)) & 1;
			    bitmap.pix16(y,x) = pix;
			}*/
		}
	}

	for(int y=cliprect.top(); y<cliprect.bottom(); y++) // FIXME: off-by-one?
	{
		for(int x=80;x<160;x++)
		{
			uint16_t yoffs;

			yoffs = y + r_offs;

			if(yoffs >= 64)
				yoffs -= 64;

			if(m_lcd.attr[x/8+yoffs*20] == 0x60 || m_lcd.attr[x/8+yoffs*20] == 0x50)
			{
				uint8_t vram,pix;

				vram = m_lcd.vram[x/8+yoffs*20];
				pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(yoffs & 7))) & 1;
				bitmap.pix16(y,x) = pix;
			}
			/*else if(m_lcd.attr[x/8+yoffs*20] == 0x40)
			{
			    uint8_t vram,pix;

			    vram = m_lcd.vram[x/8+yoffs*20];
			    pix = (vram) >> (7-(yoffs & 7)) & 1;
			    bitmap.pix16(y,x) = pix;
			}*/
		}
	}

	return 0;
}


/*
[1] DDDD DDDD vram data/attr (left half)
[2] DDDD DDDD vram data/attr (right half)
[8] SSSS --YY Status code (1=vram type/0xb=attr type) / upper part of Y address
[9] YYYY XXXX lower part of Y address / X address
*/
uint8_t fp200_state::read_lcd_attr(uint16_t X, uint16_t Y)
{
	uint16_t base_offs;
	uint8_t res = 0;

	for(int yi=0;yi<8;yi++)
	{
		base_offs = X+(Y+yi)*20;

		if(base_offs >= 20*64)
			return 0xff;

		res = m_lcd.attr[base_offs];
	}

	return res;
}

uint8_t fp200_state::read_lcd_vram(uint16_t X, uint16_t Y)
{
	uint16_t base_offs;
	uint8_t res = 0;

	for(int yi=0;yi<8;yi++)
	{
		base_offs = X+(Y+yi)*20;

		if(base_offs >= 20*64)
			return 0xff;

		res = m_lcd.vram[base_offs];
	}

	return res;
}

uint8_t fp200_state::fp200_lcd_r(offs_t offset)
{
	uint8_t res;

	res = 0;

	switch(offset)
	{
		case 1:
			//printf("%d %d -> (L) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
			if(m_lcd.status == 0xb)
				res = read_lcd_attr(m_lcd.x,m_lcd.y);
			else if(m_lcd.status == 1)
				res = read_lcd_vram(m_lcd.x,m_lcd.y);
			break;
		case 2:
			//printf("%d %d -> (R) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
			if(m_lcd.status == 0xb)
				res = read_lcd_attr(m_lcd.x + 10,m_lcd.y);
			else if(m_lcd.status == 1)
				res = read_lcd_vram(m_lcd.x + 10,m_lcd.y);
			break;
		case 8:
			res =  (m_lcd.status & 0xf) << 4;
			res |= (m_lcd.y & 0x30) >> 4;
			break;
		case 9:
			res =  (m_lcd.y & 0xf) << 4;
			res |= (m_lcd.x & 0xf);
			break;
	}


	return res;
}

void fp200_state::write_lcd_attr(uint16_t X, uint16_t Y,uint8_t data)
{
	uint16_t base_offs;

	for(int yi=0;yi<8;yi++)
	{
		base_offs = X+(Y+yi)*20;

		if(base_offs >= 20*64)
			return;

		//if(data != 0x60)
		//  printf("%d %d %02x\n",X,Y,data);

		m_lcd.attr[base_offs] = data;
	}
}

void fp200_state::write_lcd_vram(uint16_t X, uint16_t Y,uint8_t data)
{
	uint16_t base_offs;

	for(int yi=0;yi<8;yi++)
	{
		base_offs = X+(Y+yi)*20;

		if(base_offs >= 20*64)
			return;

		m_lcd.vram[base_offs] = data;
	}
}

void fp200_state::fp200_lcd_w(offs_t offset, uint8_t data)
{
	switch(offset)
	{
		case 1:
			//printf("%d %d -> %02x (%c) (L %02x)\n",m_lcd.x,m_lcd.y,data,data,m_lcd.status);
			if(m_lcd.status == 0xb)
				write_lcd_attr(m_lcd.x,m_lcd.y,data);
			else if(m_lcd.status == 1)
				write_lcd_vram(m_lcd.x,m_lcd.y,data);
			break;
		case 2:
			//printf("%d %d -> %02x (%c) (R %02x)\n",m_lcd.x + 10,m_lcd.y,data,data,m_lcd.status);
			if(m_lcd.status == 0xb)
				write_lcd_attr(m_lcd.x + 10,m_lcd.y,data);
			else if(m_lcd.status == 1)
				write_lcd_vram(m_lcd.x + 10,m_lcd.y,data);
			break;
		case 8:
			m_lcd.status = (data & 0xf0) >> 4;
			if(m_lcd.status == 0x0b)
				m_lcd.y = (m_lcd.y & 0xf) | ((data & 3) << 4);
			break;
		case 9:
			m_lcd.y = (m_lcd.y & 0x30) | ((data & 0xf0) >> 4);
			m_lcd.x = data & 0xf;
			break;
	}
}

uint8_t fp200_state::fp200_keyb_r(offs_t offset)
{
	const char *const keynames[16] = { "KEY0", "KEY1", "KEY2", "KEY3",
										"KEY4", "KEY5", "KEY6", "KEY7",
										"KEY8", "KEY9", "UNUSED", "UNUSED",
										"UNUSED", "UNUSED", "UNUSED", "UNUSED"};
	uint8_t res;

	if(offset == 0)
		res = ioport(keynames[m_keyb_mux])->read();
	else
	{
		printf("Unknown keyboard offset read access %02x\n",offset + 0x20);
		res = 0;
	}

	return res;
}

void fp200_state::fp200_keyb_w(offs_t offset, uint8_t data)
{
	if(offset == 1)
		m_keyb_mux = data & 0xf;
	else if(offset == 0)
	{
		// ... ?
	}
	else
		printf("Unknown keyboard offset write access %02x %02x\n",offset + 0x20,data);
}

/*
Annoyingly the i/o map uses the SOD to access different devices, so we need trampolines.
SOD = 0
0x10 - 0x1f Timer control (RPC05 RTC)
0x20 - 0x2f AUTO-POWER OFF
0x40 - 0x4f FDC Device ID Code (5 for "FP-1021FD")
0x80 - 0xff FDD (unknown type)
SOD = 1
0x00 - 0x0f LCD control.
0x10 - 0x1f I/O control
0x20 - 0x2f Keyboard
0x40 - 0x4f MT.RS-232C control
0x80 - 0x8f Printer (Centronics)
*/
uint8_t fp200_state::fp200_io_r(offs_t offset)
{
	uint8_t res;

	if(m_io_type == 0)
	{
		res = 0;
		logerror("Unemulated I/O read %02x (%02x)\n",offset,m_io_type);
	}
	else
	{
		switch(offset & 0xf0)
		{
			//case 0x00: return;
			case 0x00: res = fp200_lcd_r(offset & 0xf); break;
			case 0x20: res = fp200_keyb_r(offset & 0xf); break;
			default: res = 0; logerror("Unemulated I/O read %02x (%02x)\n",offset,m_io_type); break;
		}
	}

	return res;
}

void fp200_state::fp200_io_w(offs_t offset, uint8_t data)
{
	if(m_io_type == 0)
	{
		switch(offset & 0xf0)
		{
			default:logerror("Unemulated I/O write %02x (%02x) <- %02x\n",offset,m_io_type,data); break;
		}
	}
	else
	{
		switch(offset & 0xf0)
		{
			case 0x00: fp200_lcd_w(offset & 0xf,data); break;
			case 0x20: fp200_keyb_w(offset & 0xf,data); break;
			default:logerror("Unemulated I/O write %02x (%02x) <- %02x\n",offset,m_io_type,data); break;
		}
	}
}

void fp200_state::fp200_map(address_map &map)
{
	map(0x0000, 0x7fff).rom();
	map(0x8000, 0x9fff).ram();
//  0xa000, 0xffff exp RAM
	map(0xa000, 0xbfff).ram();
	map(0xc000, 0xdfff).ram();
	map(0xe000, 0xffff).ram();
}

void fp200_state::fp200_io(address_map &map)
{
	map(0x00, 0xff).rw(FUNC(fp200_state::fp200_io_r), FUNC(fp200_state::fp200_io_w));
}

INPUT_CHANGED_MEMBER(fp200_state::keyb_irq)
{
	/* a keyboard stroke causes a rst7.5 */
	m_maincpu->set_input_line(I8085_RST75_LINE, (newval) ? ASSERT_LINE : CLEAR_LINE);

}

/* TODO: remote SW? */
static INPUT_PORTS_START( fp200 )
	PORT_START("KEY0")
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("7 / '") PORT_CODE(KEYCODE_7) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY1")
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("8 / (") PORT_CODE(KEYCODE_8) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY2")
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("9 / )") PORT_CODE(KEYCODE_9) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(". / >") PORT_CODE(KEYCODE_STOP) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY3")
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(", / <") PORT_CODE(KEYCODE_COMMA) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("; / +") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY4")
//  PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) //PORT_TOGGLE PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("INS / DEL") PORT_CODE(KEYCODE_INSERT) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("HOME / CLS") PORT_CODE(KEYCODE_HOME) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF0 / PF5") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("1 / !") PORT_CODE(KEYCODE_1) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY5")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("STOP / CONT") PORT_CODE(KEYCODE_RIGHT) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("\\ / |") PORT_CODE(KEYCODE_RIGHT) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT") PORT_CODE(KEYCODE_RIGHT) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF1 / PF6") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("2 / \"") PORT_CODE(KEYCODE_2) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY6")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("^ / ~") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT") PORT_CODE(KEYCODE_LEFT) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF2 / PF7") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("3 / #") PORT_CODE(KEYCODE_3) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY7")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("@ / '") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("- / =") PORT_CODE(KEYCODE_MINUS) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("DOWN") PORT_CODE(KEYCODE_DOWN) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF3 / PF8") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("4 / $") PORT_CODE(KEYCODE_4) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY8")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("[") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(": / *") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("UP") PORT_CODE(KEYCODE_UP) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF4 / PF9") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("5 / %") PORT_CODE(KEYCODE_5) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEY9")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("] / }") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SHIFT LOCK") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("_") PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("6 / &") PORT_CODE(KEYCODE_6) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_IMPULSE(1) PORT_CHANGED_MEMBER(DEVICE_SELF, fp200_state,keyb_irq, 0)

	PORT_START("KEYMOD")
	PORT_BIT( 0x01f, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CETL") PORT_TOGGLE
	PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT)
	PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK")
	PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GRAPH")
	PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL)

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

static const gfx_layout charlayout =
{
	8,8,
	RGN_FRAC(1,1),
	1,
	{ RGN_FRAC(0,1) },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	8*8
};

static GFXDECODE_START( gfx_fp200 )
	GFXDECODE_ENTRY( "chargen", 0, charlayout,     0, 1 )
GFXDECODE_END


void fp200_state::machine_start()
{
	uint8_t *raw_gfx = memregion("raw_gfx")->base();
	m_chargen = memregion("chargen")->base();

	for(int i=0;i<0x800;i++)
	{
		m_chargen[i] = raw_gfx[bitswap<16>(i,15,14,13,12,11,6,5,4,3,10,9,8,7,2,1,0)];
	}
}

void fp200_state::machine_reset()
{
}


void fp200_state::fp200_palette(palette_device &palette) const
{
	palette.set_pen_color(0, 0xa0, 0xa8, 0xa0);
	palette.set_pen_color(1, 0x30, 0x38, 0x10);
}

WRITE_LINE_MEMBER( fp200_state::sod_w )
{
	m_io_type = state;
}

READ_LINE_MEMBER( fp200_state::sid_r )
{
	return (ioport("KEYMOD")->read() >> m_keyb_mux) & 1;
}

void fp200_state::fp200(machine_config &config)
{
	/* basic machine hardware */
	I8085A(config, m_maincpu, MAIN_CLOCK);
	m_maincpu->set_addrmap(AS_PROGRAM, &fp200_state::fp200_map);
	m_maincpu->set_addrmap(AS_IO, &fp200_state::fp200_io);
	m_maincpu->in_sid_func().set(FUNC(fp200_state::sid_r));
	m_maincpu->out_sod_func().set(FUNC(fp200_state::sod_w));

	/* video hardware */
	screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
	screen.set_refresh_hz(60);
	screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500));
	screen.set_screen_update(FUNC(fp200_state::screen_update));
	screen.set_size(20*8, 8*8);
	screen.set_visarea(0*8, 20*8-1, 0*8, 8*8-1);
	screen.set_palette("palette");

	GFXDECODE(config, "gfxdecode", "palette", gfx_fp200);

	PALETTE(config, "palette", FUNC(fp200_state::fp200_palette), 2);

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
}


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

  ROM definition(s)

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

ROM_START( fp200 )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASE00 )
	ROM_LOAD( "fp200rom.bin", 0x0000, 0x8000, CRC(dba6e41b) SHA1(c694fa19172eb56585a9503997655bcf9d369c34) )

	ROM_REGION( 0x800, "raw_gfx", ROMREGION_ERASE00 )
	ROM_LOAD( "chr.bin", 0x0000, 0x800, CRC(2e6501a5) SHA1(6186e25feabe6db851ee7d61dad11e182a6d3a4a) )

	ROM_REGION( 0x800, "chargen", ROMREGION_ERASE00 )
ROM_END

COMP( 1982, fp200, 0, 0, fp200, fp200, fp200_state, empty_init, "Casio", "FP-200 (Japan)", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )