summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/cgc7900.c
blob: 55123f9be748fb8569dfba27488f6fca42d79c8b (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
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/***************************************************************************

        Chromatics CGC 7900

        05/04/2010 Skeleton driver.

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

/*

    TODO:

    - does not boot
    - interrupts
    - vsync interrupt
    - map ROM to 000000-000007 at boot
    - floppy
    - bitmap display
    - Z mode read/write
    - color status write
    - bitmap roll
    - overlay roll
    - keyboard
    - joystick
    - light pen
    - memory parity
    - sync
    - disk DMA
    - PIO DMA
    - serial port controller
    - HVG
    - OMTI Series 10 SCSI controller (8" Winchester HD)

*/

#include "includes/cgc7900.h"



/***************************************************************************
    PARAMETERS
***************************************************************************/

#define INT_RTC             0x0001
#define INT_RS449_TXRDY     0x0002
#define INT_BINT2           0x0004
#define INT_RS232_TXRDY     0x0008
#define INT_DISK            0x0010
#define INT_BINT3           0x0020
#define INT_BEZEL           0x0040
#define INT_KEYBOARD        0x0080
#define INT_RS449_RXRDY     0x0100
#define INT_LIGHT_PEN       0x0200
#define INT_BINT4           0x0400
#define INT_JOYSTICK        0x0800
#define INT_VSYNC           0x1000
#define INT_BINT5           0x2000
#define INT_BINT1           0x4000
#define INT_RS232_RXRDY     0x8000

//static const int INT_LEVEL[] = { 5, 4, 5, 4, 4, 5, 4, 5, 5, 4, 5, 4, 4, 5, 4, 5 };

/***************************************************************************
    READ/WRITE HANDLERS
***************************************************************************/

/*-------------------------------------------------
    keyboard_r - keyboard data read
-------------------------------------------------*/

READ16_MEMBER( cgc7900_state::keyboard_r )
{
	/*

	    bit     description

	     0      key data bit 0
	     1      key data bit 1
	     2      key data bit 2
	     3      key data bit 3
	     4      key data bit 4
	     5      key data bit 5
	     6      key data bit 6
	     7      key data bit 7
	     8      SHIFT key
	     9      CTRL key
	    10      M1 key
	    11      M2 key
	    12
	    13
	    14
	    15

	*/

	return 0;
}

/*-------------------------------------------------
    keyboard_w - keyboard data write
-------------------------------------------------*/

WRITE16_MEMBER( cgc7900_state::keyboard_w )
{
	/*

	    bit     description

	     0      LED select bit 0
	     1      LED select bit 1
	     2      LED select bit 2
	     3      LED select bit 3
	     4      LED select bit 4
	     5
	     6
	     7      LED switch (1=on, 0=off)
	     8
	     9
	    10
	    11
	    12
	    13
	    14
	    15

	*/
}

/*-------------------------------------------------
    interrupt_mask_w - interrupt mask write
-------------------------------------------------*/

WRITE16_MEMBER( cgc7900_state::interrupt_mask_w )
{
	/*

	    bit     description

	     0      real time clock
	     1      RS-449 Tx ready
	     2      BINT 2
	     3      RS-232 Tx ready
	     4      disk
	     5      BINT 3
	     6      bezel keys
	     7      keyboard
	     8      RS-449 Rx ready
	     9      light pen
	    10      BINT 4
	    11      joystick
	    12      vertical retrace
	    13      BINT 5
	    14      BINT 1
	    15      RS-232 Rx ready

	*/

	m_int_mask = data;
}

/*-------------------------------------------------
    disk_data_r - disk data read
-------------------------------------------------*/

READ16_MEMBER( cgc7900_state::disk_data_r )
{
	return 0;
}

/*-------------------------------------------------
    disk_data_w - disk data write
-------------------------------------------------*/

WRITE16_MEMBER( cgc7900_state::disk_data_w )
{
}

/*-------------------------------------------------
    disk_status_r - disk status read
-------------------------------------------------*/

READ16_MEMBER( cgc7900_state::disk_status_r )
{
	/*

	    bit     signal      description

	     0      _I/O        input/output
	     1      _REQ        request
	     2      _BSY        busy
	     3      C/_D        control/data
	     4      _MSG        message
	     5      _RDY        ready
	     6
	     7
	     8
	     9
	    10
	    11
	    12
	    13
	    14
	    15

	*/

	return 0xffff - 0x04;
}

/*-------------------------------------------------
    disk_command_w - disk command write
-------------------------------------------------*/

WRITE16_MEMBER( cgc7900_state::disk_command_w )
{
}

/***************************************************************************
    MEMORY MAPS
***************************************************************************/

/*-------------------------------------------------
    ADDRESS_MAP( cgc7900_mem )
-------------------------------------------------*/

static ADDRESS_MAP_START( cgc7900_mem, AS_PROGRAM, 16, cgc7900_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x000000, 0x000007) AM_ROM AM_REGION(M68000_TAG, 0)
	AM_RANGE(0x000008, 0x1fffff) AM_RAM AM_SHARE("chrom_ram")
	AM_RANGE(0x800000, 0x80ffff) AM_ROM AM_REGION(M68000_TAG, 0)
	AM_RANGE(0xa00000, 0xbfffff) AM_READWRITE(z_mode_r, z_mode_w)
	AM_RANGE(0xc00000, 0xdfffff) AM_RAM AM_SHARE("plane_ram")
	AM_RANGE(0xe00000, 0xe1ffff) AM_WRITE(color_status_w)
//  AM_RANGE(0xe20000, 0xe23fff) Raster Processor
	AM_RANGE(0xe30000, 0xe303ff) AM_RAM AM_SHARE("clut_ram")
	AM_RANGE(0xe38000, 0xe3bfff) AM_RAM AM_SHARE("overlay_ram")
	AM_RANGE(0xe40000, 0xe40001) AM_RAM AM_SHARE("roll_bitmap")
	AM_RANGE(0xe40002, 0xe40003) AM_RAM AM_SHARE("pan_x")
	AM_RANGE(0xe40004, 0xe40005) AM_RAM AM_SHARE("pan_y")
	AM_RANGE(0xe40006, 0xe40007) AM_RAM AM_SHARE("zoom")
	AM_RANGE(0xe40008, 0xe40009) AM_RAM
	AM_RANGE(0xe4000a, 0xe4000f) AM_RAM // Raster Processor
	AM_RANGE(0xe40010, 0xe40011) AM_RAM AM_SHARE("blink_select")
	AM_RANGE(0xe40012, 0xe40013) AM_RAM AM_SHARE("plane_select")
	AM_RANGE(0xe40014, 0xe40015) AM_RAM AM_SHARE("plane_switch")
	AM_RANGE(0xe40016, 0xe40017) AM_RAM AM_SHARE("color_status_fg")
	AM_RANGE(0xe40018, 0xe40019) AM_RAM AM_SHARE("color_status_bg")
	AM_RANGE(0xe4001a, 0xe4001b) AM_RAM AM_SHARE("roll_overlay")
	AM_RANGE(0xe4001c, 0xe40fff) AM_RAM
//  AM_RANGE(0xefc440, 0xefc441) HVG Load X
//  AM_RANGE(0xefc442, 0xefc443) HVG Load Y
//  AM_RANGE(0xefc444, 0xefc445) HVG Load dX
//  AM_RANGE(0xefc446, 0xefc447) HVG Load dY
//  AM_RANGE(0xefc448, 0xefc449) HVG Load Pixel Color
//  AM_RANGE(0xefc44a, 0xefc44b) HVG Load Trip
	AM_RANGE(0xff8000, 0xff8001) AM_DEVREADWRITE8(INS8251_0_TAG, i8251_device, data_r, data_w, 0xff00)
	AM_RANGE(0xff8002, 0xff8003) AM_DEVREADWRITE8(INS8251_0_TAG, i8251_device, status_r, control_w, 0xff00)
	AM_RANGE(0xff8040, 0xff8041) AM_DEVREADWRITE8(INS8251_1_TAG, i8251_device, data_r, data_w, 0xff00)
	AM_RANGE(0xff8042, 0xff8043) AM_DEVREADWRITE8(INS8251_1_TAG, i8251_device, status_r, control_w, 0xff00)
	AM_RANGE(0xff8080, 0xff8081) AM_READWRITE(keyboard_r, keyboard_w)
//  AM_RANGE(0xff80c6, 0xff80c7) Joystick X axis
//  AM_RANGE(0xff80ca, 0xff80cb) Joystick Y axis
//  AM_RANGE(0xff80cc, 0xff80cd) Joystick Z axis
	AM_RANGE(0xff8100, 0xff8101) AM_READWRITE(disk_data_r, disk_data_w)
	AM_RANGE(0xff8120, 0xff8121) AM_READWRITE(disk_status_r, disk_command_w)
	AM_RANGE(0xff8140, 0xff8141) AM_READ_PORT("BEZEL")
//  AM_RANGE(0xff8180, 0xff8181) AM_DEVWRITE8(K1135A_TAG, k1135a_w, 0xff00) Baud rate generator
//  AM_RANGE(0xff81c0, 0xff81ff) AM_DEVREADWRITE8(MM58167_TAG, mm58167_r, mm58167_w, 0xff00)
	AM_RANGE(0xff8200, 0xff8201) AM_WRITE(interrupt_mask_w)
//  AM_RANGE(0xff8240, 0xff8241) Light Pen enable
//  AM_RANGE(0xff8242, 0xff8243) Light Pen X value
//  AM_RANGE(0xff8244, 0xff8245) Light Pen Y value
//  AM_RANGE(0xff8246, 0xff8247) Buffer memory parity check
//  AM_RANGE(0xff8248, 0xff8249) Buffer memory parity set/reset
	AM_RANGE(0xff824a, 0xff824b) AM_READ(sync_r)
	AM_RANGE(0xff83c0, 0xff83c1) AM_DEVWRITE8(AY8910_TAG, ay8910_device, address_w, 0xff00)
	AM_RANGE(0xff83c2, 0xff83c3) AM_DEVREAD8(AY8910_TAG, ay8910_device, data_r, 0xff00)
	AM_RANGE(0xff83c4, 0xff83c5) AM_DEVWRITE8(AY8910_TAG, ay8910_device, data_w, 0xff00)
//  AM_RANGE(0xff8500, 0xff8501) Disk DMA Command Register
//  AM_RANGE(0xff8502, 0xff8503) Disk DMA Address Register
//  AM_RANGE(0xff8507, 0xff8507) Disk DMA Control/Status Register
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( keyboard_mem )
-------------------------------------------------*/

static ADDRESS_MAP_START( keyboard_mem, AS_PROGRAM, 8, cgc7900_state )
	AM_RANGE(0x000, 0x7ff) AM_ROM
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( keyboard_io )
-------------------------------------------------*/

static ADDRESS_MAP_START( keyboard_io, AS_IO, 8, cgc7900_state )
/*  AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1)
    AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2)
    AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1)
    AM_RANGE(MCS48_PORT_BUS, MCS48_PORT_BUS)*/
ADDRESS_MAP_END

/***************************************************************************
    INPUT PORTS
***************************************************************************/

/*-------------------------------------------------
    INPUT_PORTS( cgc7900 )
-------------------------------------------------*/

static INPUT_PORTS_START( cgc7900 )
	PORT_START("BEZEL")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 7")
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 8")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 5")
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 6")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 3")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 4")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 1")
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Bezel 2")

	PORT_START("JOYSTICK_X")
	PORT_BIT( 0x3ff, 0x200, IPT_AD_STICK_X ) PORT_MINMAX(0x000, 0x3ff) PORT_SENSITIVITY(100) PORT_KEYDELTA(50)

	PORT_START("JOYSTICK_Y")
	PORT_BIT( 0x3ff, 0x200, IPT_AD_STICK_Y ) PORT_MINMAX(0x000, 0x3ff) PORT_SENSITIVITY(100) PORT_KEYDELTA(50)

	PORT_START("JOYSTICK_Z")
	PORT_BIT( 0x3ff, 0x200, IPT_AD_STICK_Z ) PORT_MINMAX(0x000, 0x3ff) PORT_SENSITIVITY(100) PORT_KEYDELTA(50)

	PORT_START("LIGHT_PEN_X")
	PORT_BIT( 0x1ff, 0x100, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_MINMAX(0, 511) PORT_SENSITIVITY(20) PORT_KEYDELTA(25)

	PORT_START("LIGHT_PEN_Y")
	PORT_BIT( 0x1ff, 0x0c0, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_MINMAX(0, 383) PORT_SENSITIVITY(20) PORT_KEYDELTA(25)
INPUT_PORTS_END


/***************************************************************************
    MACHINE INITIALIZATION
***************************************************************************/

/*-------------------------------------------------
    MACHINE_START( cgc7900 )
-------------------------------------------------*/

void cgc7900_state::machine_start()
{
	/* register for state saving */
	save_pointer(NAME(m_overlay_ram.target()), 0x4000);
}

void cgc7900_state::machine_reset()
{
}

/***************************************************************************
    MACHINE DRIVERS
***************************************************************************/

/*-------------------------------------------------
    MACHINE_DRIVER( cgc7900 )
-------------------------------------------------*/

static MACHINE_CONFIG_START( cgc7900, cgc7900_state )
	/* basic machine hardware */
	MCFG_CPU_ADD(M68000_TAG, M68000, XTAL_28_48MHz/4)
	MCFG_CPU_PROGRAM_MAP(cgc7900_mem)

	MCFG_CPU_ADD(I8035_TAG, I8035, 1000000)
	MCFG_CPU_PROGRAM_MAP(keyboard_mem)
	MCFG_CPU_IO_MAP(keyboard_io)
	MCFG_DEVICE_DISABLE()

/*  MCFG_CPU_ADD(AM2910_TAG, AM2910, XTAL_17_36MHz)
    MCFG_CPU_PROGRAM_MAP(omti10_mem)*/

	/* video hardware */
	MCFG_FRAGMENT_ADD(cgc7900_video)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")
	MCFG_SOUND_ADD(AY8910_TAG, AY8910, XTAL_28_48MHz/16)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	/* devices */
	MCFG_DEVICE_ADD(INS8251_0_TAG, I8251, 0)
	// rs232

	MCFG_DEVICE_ADD(INS8251_1_TAG, I8251, 0)
	// rs449
MACHINE_CONFIG_END

/***************************************************************************
    ROMS
***************************************************************************/

ROM_START( cgc7900 )
	ROM_REGION16_BE( 0x10000, M68000_TAG, 0 )
	ROM_LOAD16_BYTE( "210274 800k even a3ee term 1.4.ue24",                     0x0000, 0x1000, CRC(5fa8f368) SHA1(120dbcfedce0badd38bf5b23e1fbc99667eb286c) )
	ROM_LOAD16_BYTE( "210275 800k odd bbb3 term 1.4.uf24",                      0x0001, 0x1000, CRC(4d479457) SHA1(5fa96a1eadfd9ba493d28691286e2e001a489a19) )
	ROM_LOAD16_BYTE( "210276 802k even 0c22 term 1.4.ue22",                     0x2000, 0x1000, CRC(c88c44ec) SHA1(f39d8a3cf7aaefd815b4426348965b076c1f2265) )
	ROM_LOAD16_BYTE( "210277 802k odd b58c term 1.4.uf22",                      0x2001, 0x1000, CRC(52ffe01f) SHA1(683aa71c2eb17b7ad639b888487db73d7684901a) )
	ROM_LOAD16_BYTE( "210278 804k even eaf4 term 1.4.ue21",                     0x4000, 0x1000, CRC(7fe326db) SHA1(d39d05e008160fb8afa62e0d4cfb1d813f2296d4) )
	ROM_LOAD16_BYTE( "210279 804k odd 3f6d term 1.4.uf21",                      0x4001, 0x1000, CRC(6c12d81c) SHA1(efe7c20e567c02b9c5b66a2d18e035d5f5f56b28) )
	ROM_LOAD16_BYTE( "210280 806k even 679d term 1.4.ue20",                     0x6000, 0x1000, CRC(70930d74) SHA1(a5ab1c0bd8bd829408961107e01598cd71a97fec) )
	ROM_LOAD16_BYTE( "210281 1.4 806k odd sum 611e.uf20",                       0x6001, 0x1000, CRC(8080aa2a) SHA1(c018a23e6f2158e2d63723cade0a3ad737090921) )
	ROM_LOAD16_BYTE( "su7700 210282 808k even opmod term 1.4 sum 2550.ue18",    0x8000, 0x1000, CRC(8f5834cd) SHA1(3cd03c82aa85c30cbc8e954f5a9fc4e9034f913b) )
	ROM_LOAD16_BYTE( "su7700 210283 808k odd opmod term 1.4 sum faca.uf18",     0x8001, 0x1000, CRC(e593b133) SHA1(6c641df844706e0d990b5fd544e98594171080a1) )
	ROM_LOAD16_BYTE( "210258 80ak even b2f6 mon 1.3.ue15",                      0xa000, 0x1000, CRC(ec5a1250) SHA1(ffef73d35f172ac610b35bdf729d51eb6f9346ba) )
	ROM_LOAD16_BYTE( "210259 80ak odd cd66 mon 1.3.uf15",                       0xa001, 0x1000, CRC(61eb43c6) SHA1(baaae0b787798147da453aac1f815589ea4ed921) )
	ROM_LOAD16_BYTE( "210244 80c even ce40 dos 1.6b.ue13",                      0xc000, 0x1000, CRC(3b64e4cb) SHA1(71b28d160b101ea6165e602ff1c54272b7b30ece) )
	ROM_LOAD16_BYTE( "210245 80c odd 1ac3 dos 1.6b.uf13",                       0xc001, 0x1000, CRC(0b6539ca) SHA1(d49e6d3307e5d634a412fd80b59492f31e29f7e0) )
	ROM_LOAD16_BYTE( "210290 idris even rel3 sum 0cce.ue12",                    0xe000, 0x1000, CRC(07065772) SHA1(620ea5d55021e5c38efc010722ddbd852cd49e39) )
	ROM_LOAD16_BYTE( "210291 idris odd rel3 sum 5d11.uf12",                     0xe001, 0x1000, CRC(d81b30da) SHA1(228f9b4e39d430ce4aaa81ea63f4516a51e6d001) )

	ROM_REGION( 0x800, "i8035", 0 )
	ROM_LOAD( "keyboard controller i8035", 0x0000, 0x0800, NO_DUMP )

	ROM_REGION( 0x800, "gfx1", 0 )
	ROM_LOAD( "norm chrset 4b40.ua13",  0x0000, 0x0400, CRC(55eb7b87) SHA1(768cea80597e7396d9e26f8cd09e6b480a526fce) )
	ROM_LOAD( "alt 46a7.ua14",          0x0400, 0x0400, CRC(be22b7e4) SHA1(83ef252c7fab33b4d3821a3049b89d044df35de8) )

	ROM_REGION( 0x20, "proms", 0 )
	ROM_LOAD( "rp0a.ub8",  0x0000, 0x0020, NO_DUMP )
	ROM_LOAD( "rp1a.ub7",  0x0000, 0x0020, NO_DUMP )
	ROM_LOAD( "rp2a.ub9",  0x0000, 0x0020, NO_DUMP )
	ROM_LOAD( "ha-5.ub1",  0x0000, 0x0020, NO_DUMP )
	ROM_LOAD( "03c0.ua16", 0x0000, 0x0020, NO_DUMP )
	ROM_LOAD( "03c0.ua11", 0x0000, 0x0020, NO_DUMP )

	/* OMTI Series 10 SCSI controller */
	ROM_REGION( 0x1400, AM2910_TAG, 0 )
	ROM_LOAD( "35 1.7b", 0x0000, 0x0400, NO_DUMP ) /* 82S137N */
	ROM_LOAD( "35 2.7b", 0x0400, 0x0400, NO_DUMP ) /* 82S137N */
	ROM_LOAD( "35 3.7b", 0x0800, 0x0400, NO_DUMP ) /* 82S137N */
	ROM_LOAD( "35 4.7b", 0x0c00, 0x0400, NO_DUMP ) /* 82S137N */
	ROM_LOAD( "35 5.7b", 0x1000, 0x0400, NO_DUMP ) /* 82S137N */
ROM_END

/***************************************************************************
    SYSTEM DRIVERS
***************************************************************************/

/*    YEAR  NAME        PARENT  COMPAT  MACHINE     INPUT       INIT    COMPANY         FULLNAME    FLAGS */
COMP( 1980, cgc7900,    0,      0,      cgc7900,    cgc7900, driver_device, 0,      "Chromatics",   "CGC 7900", MACHINE_NOT_WORKING)