summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/compucolor.cpp
blob: 4de6390e1b9074bc453424a29071eff7ee270784 (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
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/*

    Compucolor II

    http://www.compucolor.org/index.html

*/

/*

    TODO:

    - floppy
    - interlaced video
    - add-on ROM
    - add-on RAM
    - add-on unit

*/

#define I8080_TAG   "ua2"
#define TMS5501_TAG "ud2"
#define CRT5027_TAG "uf9"
#define RS232_TAG   "rs232"

#include "bus/rs232/rs232.h"
#include "cpu/i8085/i8085.h"
#include "bus/compucolor/floppy.h"
#include "machine/ram.h"
#include "machine/tms5501.h"
#include "video/tms9927.h"
#include "softlist.h"

class compucolor2_state : public driver_device
{
public:
	compucolor2_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
			m_maincpu(*this, I8080_TAG),
			m_mioc(*this, TMS5501_TAG),
			m_vtac(*this, CRT5027_TAG),
			m_palette(*this, "palette"),
			m_rs232(*this, RS232_TAG),
			m_floppy0(*this, "cd0"),
			m_floppy1(*this, "cd1"),
			m_char_rom(*this, "chargen"),
			m_video_ram(*this, "videoram"),
			m_y0(*this, "Y0"),
			m_y1(*this, "Y1"),
			m_y2(*this, "Y2"),
			m_y3(*this, "Y3"),
			m_y4(*this, "Y4"),
			m_y5(*this, "Y5"),
			m_y6(*this, "Y6"),
			m_y7(*this, "Y7"),
			m_y8(*this, "Y8"),
			m_y9(*this, "Y9"),
			m_y10(*this, "Y10"),
			m_y11(*this, "Y11"),
			m_y12(*this, "Y12"),
			m_y13(*this, "Y13"),
			m_y14(*this, "Y14"),
			m_y15(*this, "Y15"),
			m_y128(*this, "Y128")
	{ }

	required_device<cpu_device> m_maincpu;
	required_device<tms5501_device> m_mioc;
	required_device<crt5027_device> m_vtac;
	required_device<palette_device> m_palette;
	required_device<rs232_port_device> m_rs232;
	required_device<compucolor_floppy_port_device> m_floppy0;
	required_device<compucolor_floppy_port_device> m_floppy1;
	required_memory_region m_char_rom;
	required_shared_ptr<UINT8> m_video_ram;
	required_ioport m_y0;
	required_ioport m_y1;
	required_ioport m_y2;
	required_ioport m_y3;
	required_ioport m_y4;
	required_ioport m_y5;
	required_ioport m_y6;
	required_ioport m_y7;
	required_ioport m_y8;
	required_ioport m_y9;
	required_ioport m_y10;
	required_ioport m_y11;
	required_ioport m_y12;
	required_ioport m_y13;
	required_ioport m_y14;
	required_ioport m_y15;
	required_ioport m_y128;

	virtual void machine_start();
	virtual void machine_reset();

	UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);

	DECLARE_READ8_MEMBER( xi_r );
	DECLARE_WRITE8_MEMBER( xo_w );
	DECLARE_WRITE_LINE_MEMBER( xmt_w );

	IRQ_CALLBACK_MEMBER( int_ack );

	UINT8 m_xo;
};

static ADDRESS_MAP_START( compucolor2_mem, AS_PROGRAM, 8, compucolor2_state )
	AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION(I8080_TAG, 0)
	AM_RANGE(0x6000, 0x6fff) AM_MIRROR(0x1000) AM_RAM AM_SHARE("videoram")
	AM_RANGE(0x8000, 0xffff) AM_RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( compucolor2_io, AS_IO, 8, compucolor2_state )
	AM_RANGE(0x00, 0x0f) AM_MIRROR(0x10) AM_DEVICE(TMS5501_TAG, tms5501_device, io_map)
	AM_RANGE(0x60, 0x6f) AM_MIRROR(0x10) AM_DEVREADWRITE(CRT5027_TAG, crt5027_device, read, write)
	AM_RANGE(0x80, 0x9f) AM_MIRROR(0x60) AM_ROM AM_REGION("ua1", 0)
ADDRESS_MAP_END

static INPUT_PORTS_START( compucolor2 )
	PORT_START("Y0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("_ CRT") PORT_CHAR('_')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F15 PLOT ESC")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BL/A7 OFF")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BLINK ON")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("^ USER") PORT_CHAR('^')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F14 CHAR RECT")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A7 ON")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BG ON")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("m M TERM MODE") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("] BLCK") PORT_CHAR(']')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F13 POINT X")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("FG ON")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad =") PORT_CODE(KEYCODE_ENTER_PAD)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("l L LOCL") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\\ 45 UP") PORT_CHAR('\\')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F12 POINT Y")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ERASE PAGE")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("k K ROLL") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("[ VIS") PORT_CHAR('[')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F11 POINT INC")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ERASE LINE")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad +") PORT_CODE(KEYCODE_PLUS_PAD)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y5")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("z Z 45 DW") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F10 X BAR XO")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad X") PORT_CODE(KEYCODE_ASTERISK)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y6")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("y Y TEST") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F9 X BAR Y")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_MAMEKEY(TAB))
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y7")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("h H HALF") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("x X XMIT") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F8 X BAR XM")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("HOME")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y8")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("g G BELL") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("w W BASIC") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F7 X BAR INC")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LIST")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y9")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("v V DEL LINE") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F6 Y BAR YO")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("POKE")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y10")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("e E BSC RST") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("u U INS LINE") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F5 Y BAR X")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("AUTO") PORT_CODE(KEYCODE_PGDN)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PRINT")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y11")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("d D DISK FCS") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("t T TEXT EDIT") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F4 Y BAR YM")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DELETE CHAR")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LOAD")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y12")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("c C CURSOR X-Y") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("s S ASMB") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F3 Y BAR INC")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("INSERT LINE")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SAVE")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y13")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("b B PLOT") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("r R BAUD RATE") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F2 VECT X1")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DELETE LINE")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PLOT")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y14")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("a A PROT BLND") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("q Q INS CHAR") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F1 VECT Y1")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("INSERT CHAR")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PUT")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y15")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("@ NULL") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("p P CPU OP SYS") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F0 VECT INC")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK ATTN")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("OUT")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Y128")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CPU RESET")
	PORT_BIT( 0x0e, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("REPEAT")
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
INPUT_PORTS_END

UINT32 compucolor2_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
	for (int y = 0; y < 32*8; y++)
	{
		offs_t offset = (y / 8) * 128;

		for (int sx = 0; sx < 64; sx++)
		{
			UINT8 code = m_video_ram[offset++];
			UINT8 attr = m_video_ram[offset++];

			offs_t char_offs = ((code & 0x7f) << 3) | (y & 0x07);
			if (BIT(code, 7)) char_offs = ((code & 0x7f) << 3) | ((y >> 1) & 0x07);

			UINT8 data = m_char_rom->base()[char_offs];

			rgb_t fg = m_palette->pen_color(attr & 0x07);
			rgb_t bg = m_palette->pen_color((attr >> 3) & 0x07);

			for (int x = 0; x < 6; x++)
			{
				bitmap.pix32(y, (sx * 6) + x) = BIT(data, 7) ? fg : bg;

				data <<= 1;
			}
		}
	}

	return 0;
}

READ8_MEMBER( compucolor2_state::xi_r )
{
	UINT8 data = 0xff;

	switch ((m_xo >> 4) & 0x03)
	{
	case 0:
		switch (m_xo & 0x0f)
		{
		case 0: data &= m_y0->read(); break;
		case 1: data &= m_y1->read(); break;
		case 2: data &= m_y2->read(); break;
		case 3: data &= m_y3->read(); break;
		case 4: data &= m_y4->read(); break;
		case 5: data &= m_y5->read(); break;
		case 6: data &= m_y6->read(); break;
		case 7: data &= m_y7->read(); break;
		case 8: data &= m_y8->read(); break;
		case 9: data &= m_y9->read(); break;
		case 10: data &= m_y10->read(); break;
		case 11: data &= m_y11->read(); break;
		case 12: data &= m_y12->read(); break;
		case 13: data &= m_y13->read(); break;
		case 14: data &= m_y14->read(); break;
		case 15: data &= m_y15->read(); break;
		}

		if (BIT(m_xo, 7))
		{
			data = (m_y128->read() & 0xf0) | (data & 0x0f);
		}
		break;

	default:
		data = 0;
	}

	return data;
}

WRITE8_MEMBER( compucolor2_state::xo_w )
{
	/*

	    bit     description

	    0       Keyboard A0, Stepper Phase 0
	    1       Keyboard A1, Stepper Phase 1
	    2       Keyboard A2, Stepper Phase 2
	    3       Keyboard A3, Disk _R/W
	    4       00=Keyboard/Modem, 01=Internal Drive (CD0), 10=External Drive (CD1)
	    5       ^
	    6       LED
	    7       0=Normal Keyboard, 1=SHIFT/CONTROL/REPEAT/CAPS LOCK

	*/

	m_xo = data;

	switch ((m_xo >> 4) & 0x03)
	{
	case 1:
		m_floppy0->select_w(0);
		m_floppy0->rw_w(BIT(data, 3));
		m_floppy0->stepper_w(data & 0x07);

		m_floppy1->select_w(1);
		break;

	case 2:
		m_floppy1->select_w(0);
		m_floppy1->rw_w(BIT(data, 3));
		m_floppy1->stepper_w(data & 0x07);

		m_floppy0->select_w(1);
		break;
	}
}

WRITE_LINE_MEMBER( compucolor2_state::xmt_w )
{
	switch ((m_xo >> 4) & 0x03)
	{
	case 0:
		m_rs232->write_txd(state);
		break;

	case 1:
		m_floppy0->write_txd(state);
		break;

	case 2:
		m_floppy1->write_txd(state);
		break;
	}
}

IRQ_CALLBACK_MEMBER( compucolor2_state::int_ack )
{
	return m_mioc->get_vector();
}

void compucolor2_state::machine_start()
{
	// state saving
	save_item(NAME(m_xo));
}

void compucolor2_state::machine_reset()
{
	m_rs232->write_rts(1);
	m_rs232->write_dtr(1);
}

static MACHINE_CONFIG_START( compucolor2, compucolor2_state )
	// basic machine hardware
	MCFG_CPU_ADD(I8080_TAG, I8080, XTAL_17_9712MHz/9)
	MCFG_CPU_PROGRAM_MAP(compucolor2_mem)
	MCFG_CPU_IO_MAP(compucolor2_io)
	MCFG_CPU_IRQ_ACKNOWLEDGE_DRIVER(compucolor2_state,int_ack)

	// video hardware
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(250))
	MCFG_SCREEN_UPDATE_DRIVER(compucolor2_state, screen_update)
	MCFG_SCREEN_SIZE(64*6, 32*8)
	MCFG_SCREEN_VISIBLE_AREA(0, 64*6-1, 0, 32*8-1)

	MCFG_PALETTE_ADD_3BIT_RGB("palette")

	MCFG_DEVICE_ADD(CRT5027_TAG, CRT5027, XTAL_17_9712MHz/2)
	MCFG_TMS9927_CHAR_WIDTH(6)
	MCFG_TMS9927_VSYN_CALLBACK(DEVWRITELINE(TMS5501_TAG, tms5501_device, sens_w))
	MCFG_VIDEO_SET_SCREEN("screen")

	// devices
	MCFG_DEVICE_ADD(TMS5501_TAG, TMS5501, XTAL_17_9712MHz/9)
	MCFG_TMS5501_IRQ_CALLBACK(INPUTLINE(I8080_TAG, I8085_INTR_LINE))
	MCFG_TMS5501_XMT_CALLBACK(WRITELINE(compucolor2_state, xmt_w))
	MCFG_TMS5501_XI_CALLBACK(READ8(compucolor2_state, xi_r))
	MCFG_TMS5501_XO_CALLBACK(WRITE8(compucolor2_state, xo_w))

	MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, NULL)
	MCFG_RS232_RXD_HANDLER(DEVWRITELINE(TMS5501_TAG, tms5501_device, rcv_w))

	MCFG_COMPUCOLOR_FLOPPY_PORT_ADD("cd0", compucolor_floppy_port_devices, "floppy")
	MCFG_RS232_RXD_HANDLER(DEVWRITELINE(TMS5501_TAG, tms5501_device, rcv_w))

	MCFG_COMPUCOLOR_FLOPPY_PORT_ADD("cd1", compucolor_floppy_port_devices, NULL)
	MCFG_RS232_RXD_HANDLER(DEVWRITELINE(TMS5501_TAG, tms5501_device, rcv_w))

	// internal ram
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("32K")
	MCFG_RAM_EXTRA_OPTIONS("8K,16K")

	// software list
	MCFG_SOFTWARE_LIST_ADD("flop_list", "compclr2_flop")
MACHINE_CONFIG_END

ROM_START( compclr2 )
	ROM_REGION( 0x4000, I8080_TAG, 0 )
	ROM_SYSTEM_BIOS( 0, "678", "v6.78" )
	ROMX_LOAD( "v678.rom", 0x0000, 0x4000, BAD_DUMP CRC(5e559469) SHA1(fe308774aae1294c852fe24017e58d892d880cd3), ROM_BIOS(1) )
	ROM_SYSTEM_BIOS( 1, "879", "v8.79" )
	ROMX_LOAD( "v879.rom", 0x0000, 0x4000, BAD_DUMP CRC(4de8e652) SHA1(e5c55da3ac893b8a5a99c8795af3ca72b1645f3f), ROM_BIOS(2) )

	ROM_REGION( 0x800, "chargen", 0 )
	ROM_LOAD( "chargen.uf6", 0x000, 0x400, BAD_DUMP CRC(7eef135a) SHA1(be488ef32f54c6e5f551fb84ab12b881aef72dd9) )
	ROM_LOAD( "chargen.uf7", 0x400, 0x400, BAD_DUMP CRC(2bee7cf6) SHA1(808e0fc6f2332b4297de190eafcf84668703e2f4) )

	ROM_REGION( 0x20, "ua1", 0 )
	ROM_LOAD( "82s123.ua1", 0x00, 0x20, BAD_DUMP CRC(27ae54bc) SHA1(ccb056fbc1ec2132f2602217af64d77237494afb) ) // I/O PROM

	ROM_REGION( 0x20, "proms", 0 )
	ROM_LOAD( "82s129.ue2", 0x00, 0x20, NO_DUMP ) // Address Decoder/Timer for RAM
	ROM_LOAD( "82s129.uf3", 0x00, 0x20, NO_DUMP ) // System Decoder
	ROM_LOAD( "82s123.ub3", 0x00, 0x20, NO_DUMP ) // ROM/PROM Decoder
	ROM_LOAD( "82s129.uf8", 0x00, 0x20, NO_DUMP ) // CPU & Horizontal Decoder
	ROM_LOAD( "82s129.ug9", 0x00, 0x20, NO_DUMP ) // Scan Decoder
	ROM_LOAD( "82s129.ug5", 0x00, 0x20, NO_DUMP ) // Color PROM
ROM_END

COMP( 1977, compclr2,    0,      0,      compucolor2,        compucolor2, driver_device, 0,      "Intelligent Systems Corporation",  "Compucolor II",  MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )