summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/upscope.cpp
blob: 0bbebfb6d391a979e982256df4e682f125ae0bf9 (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
// license:BSD-3-Clause
// copyright-holders:Mariusz Wojcieszek
/**********************************************************************************

    Up Scope

    Driver by Mariusz Wojcieszek

***********************************************************************************

    Up Scope
    Grand Products 1986

    rom board       +--------------+
                                      amiga I/O board
    u4  u3  u2  u1
            u6  u5      Amiga 500      7404 7400
                                       74374 6116  8255  TIP120 TIP120
    u12 u11 u10 u9                         battery       TIP120 TIP120 TIP120 TIP120
            u14 u13                                      TIP120 TIP120 TIP120 TIP120



                    +---------------+

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

#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "includes/amiga.h"
#include "machine/nvram.h"
#include "machine/amigafdc.h"


class upscope_state : public amiga_state
{
public:
	upscope_state(const machine_config &mconfig, device_type type, const char *tag)
		: amiga_state(mconfig, type, tag),
	m_prev_cia1_porta(0xff),
	m_parallel_data(0xff)
	{ }

	UINT8 m_nvram[0x100];
	UINT8 m_prev_cia1_porta;
	UINT8 m_parallel_data;
	UINT8 m_nvram_address_latch;
	UINT8 m_nvram_data_latch;

	DECLARE_READ8_MEMBER(upscope_cia_0_portb_r);
	DECLARE_WRITE8_MEMBER(upscope_cia_0_portb_w);
	DECLARE_READ8_MEMBER(upscope_cia_1_porta_r);
	DECLARE_WRITE8_MEMBER(upscope_cia_1_porta_w);

	DECLARE_DRIVER_INIT(upscope);

protected:
	virtual void machine_reset() override;
};


/*************************************
 *
 *  Debugging
 *
 *************************************/

#define LOG_IO          0



/*************************************
 *
 *  Reset state
 *
 *************************************/

void upscope_state::machine_reset()
{
	// reset base machine
	amiga_state::machine_reset();

	m_prev_cia1_porta = 0xff;
}


WRITE8_MEMBER( upscope_state::upscope_cia_0_portb_w )
{
	m_parallel_data = data;
}

READ8_MEMBER( upscope_state::upscope_cia_0_portb_r )
{
	return m_nvram_data_latch;
}



/*************************************
 *
 *  CIA-B port A access:
 *
 *  PA7 = com line /DTR
 *  PA6 = com line /RTS
 *  PA5 = com line /carrier detect
 *  PA4 = com line /CTS
 *  PA3 = com line /DSR
 *  PA2 = SEL (Centronics parallel control)
 *  PA1 = POUT (Centronics parallel control)
 *  PA0 = BUSY (Centronics parallel control)
 *
 *************************************/

READ8_MEMBER( upscope_state::upscope_cia_1_porta_r )
{
	return 0xf8 | (m_prev_cia1_porta & 0x07);
}

WRITE8_MEMBER( upscope_state::upscope_cia_1_porta_w )
{
	/* on a low transition of POUT, we latch stuff for the NVRAM */
	if ((m_prev_cia1_porta & 2) && !(data & 2))
	{
		/* if SEL == 1 && BUSY == 0, we latch an address */
		if ((data & 5) == 4)
		{
			if (LOG_IO) logerror("Latch address: %02X\n", m_parallel_data);
			m_nvram_address_latch = m_parallel_data;
		}

		/* if SEL == 1 && BUSY == 1, we write data to internal registers */
		else if ((data & 5) == 5)
		{
			switch (m_nvram_address_latch)
			{
				case 0x01:
					/* lamps:
					    01 = Enemy Right
					    02 = Enemy Left
					    04 = Torpedo 1
					    08 = Torpedo 2
					    10 = Torpedo 3
					    20 = Torpedo 4
					    40 = Sight
					    80 = Bubble Light
					*/
					break;

				case 0x02:
					/* coin counter */
					coin_counter_w(machine(), 0, data & 1);
					break;

				case 0x03:
					/* Written $98 at startup and nothing afterwards */
					break;

				default:
					logerror("Internal register (%d) = %02X\n", m_nvram_address_latch, m_parallel_data);
					break;
			}
		}

		/* if SEL == 0 && BUSY == 1, we write data to NVRAM */
		else if ((data & 5) == 1)
		{
			if (LOG_IO) logerror("NVRAM data write @ %02X = %02X\n", m_nvram_address_latch, m_parallel_data);
			m_nvram[m_nvram_address_latch] = m_parallel_data;
		}

		/* if SEL == 0 && BUSY == 0, who knows? */
		else
		{
			logerror("Unexpected: POUT low with SEL == 0/BUSY == 0\n");
		}
	}

	/* on a low transition of BUSY, we latch stuff for reading */
	else if ((m_prev_cia1_porta & 1) && !(data & 1))
	{
		/* if SEL == 1, we read internal data registers */
		if (data & 4)
		{
			if (LOG_IO) logerror("Internal register (%d) read\n", m_nvram_address_latch);
			m_nvram_data_latch = (m_nvram_address_latch == 0) ? ioport("IO0")->read() : 0xff;
		}

		/* if SEL == 0, we read NVRAM */
		else
		{
			m_nvram_data_latch = m_nvram[m_nvram_address_latch];
			if (LOG_IO) logerror("NVRAM data read @ %02X = %02X\n", m_nvram_address_latch, m_nvram_data_latch);
		}
	}

	/* remember the previous value */
	m_prev_cia1_porta = data;
}



/*************************************
 *
 *  Memory map
 *
 *************************************/

static ADDRESS_MAP_START( overlay_512kb_map, AS_PROGRAM, 16, upscope_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x000000, 0x07ffff) AM_MIRROR(0x180000) AM_RAM AM_SHARE("chip_ram")
	AM_RANGE(0x200000, 0x27ffff) AM_ROM AM_REGION("kickstart", 0)
ADDRESS_MAP_END

static ADDRESS_MAP_START( a500_mem, AS_PROGRAM, 16, upscope_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x000000, 0x1fffff) AM_DEVICE("overlay", address_map_bank_device, amap16)
	AM_RANGE(0xa00000, 0xbfffff) AM_READWRITE(cia_r, cia_w)
	AM_RANGE(0xc00000, 0xd7ffff) AM_READWRITE(custom_chip_r, custom_chip_w)
	AM_RANGE(0xd80000, 0xddffff) AM_NOP
	AM_RANGE(0xde0000, 0xdeffff) AM_READWRITE(custom_chip_r, custom_chip_w)
	AM_RANGE(0xdf0000, 0xdfffff) AM_READWRITE(custom_chip_r, custom_chip_w)
	AM_RANGE(0xe00000, 0xe7ffff) AM_WRITENOP AM_READ(rom_mirror_r)
	AM_RANGE(0xe80000, 0xefffff) AM_NOP // autoconfig space (installed by devices)
	AM_RANGE(0xf80000, 0xffffff) AM_ROM AM_REGION("kickstart", 0)
ADDRESS_MAP_END

static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, upscope_state )
	AM_IMPORT_FROM(a500_mem)
	AM_RANGE(0xf00000, 0xf7ffff) AM_ROM AM_REGION("user2", 0)
ADDRESS_MAP_END



/*************************************
 *
 *  Input ports
 *
 *************************************/

static INPUT_PORTS_START( upscope )
	PORT_START("POT1DAT")
	PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_SENSITIVITY(25) PORT_MINMAX(0x02,0xfe) PORT_KEYDELTA(5) PORT_CENTERDELTA(0) PORT_REVERSE

	PORT_START("IO0")
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
INPUT_PORTS_END



/*************************************
 *
 *  Machine driver
 *
 *************************************/

static MACHINE_CONFIG_START( upscope, upscope_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M68000, amiga_state::CLK_7M_NTSC)
	MCFG_CPU_PROGRAM_MAP(main_map)

	MCFG_DEVICE_ADD("overlay", ADDRESS_MAP_BANK, 0)
	MCFG_DEVICE_PROGRAM_MAP(overlay_512kb_map)
	MCFG_ADDRESS_MAP_BANK_ENDIANNESS(ENDIANNESS_BIG)
	MCFG_ADDRESS_MAP_BANK_DATABUS_WIDTH(16)
	MCFG_ADDRESS_MAP_BANK_ADDRBUS_WIDTH(22)
	MCFG_ADDRESS_MAP_BANK_STRIDE(0x200000)

	MCFG_NVRAM_ADD_0FILL("nvram")

	/* video hardware */
	MCFG_FRAGMENT_ADD(ntsc_video)

	MCFG_PALETTE_ADD("palette", 4096)
	MCFG_PALETTE_INIT_OWNER(upscope_state,amiga)

	MCFG_VIDEO_START_OVERRIDE(upscope_state,amiga)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MCFG_SOUND_ADD("amiga", AMIGA, amiga_state::CLK_C1_NTSC)
	MCFG_SOUND_ROUTE(0, "rspeaker", 0.50)
	MCFG_SOUND_ROUTE(1, "lspeaker", 0.50)
	MCFG_SOUND_ROUTE(2, "lspeaker", 0.50)
	MCFG_SOUND_ROUTE(3, "rspeaker", 0.50)

	/* cia */
	MCFG_DEVICE_ADD("cia_0", MOS8520, amiga_state::CLK_E_NTSC)
	MCFG_MOS6526_IRQ_CALLBACK(WRITELINE(amiga_state, cia_0_irq))
	MCFG_MOS6526_PA_OUTPUT_CALLBACK(WRITE8(amiga_state, cia_0_port_a_write))
	MCFG_MOS6526_PB_INPUT_CALLBACK(READ8(upscope_state, upscope_cia_0_portb_r))
	MCFG_MOS6526_PB_OUTPUT_CALLBACK(WRITE8(upscope_state, upscope_cia_0_portb_w))
	MCFG_DEVICE_ADD("cia_1", MOS8520, amiga_state::CLK_E_NTSC)
	MCFG_MOS6526_IRQ_CALLBACK(WRITELINE(amiga_state, cia_1_irq))
	MCFG_MOS6526_PA_INPUT_CALLBACK(READ8(upscope_state, upscope_cia_1_porta_r))
	MCFG_MOS6526_PA_OUTPUT_CALLBACK(WRITE8(upscope_state, upscope_cia_1_porta_w))

	/* fdc */
	MCFG_DEVICE_ADD("fdc", AMIGA_FDC, amiga_state::CLK_7M_NTSC)
	MCFG_AMIGA_FDC_INDEX_CALLBACK(DEVWRITELINE("cia_1", mos8520_device, flag_w))
MACHINE_CONFIG_END



/*************************************
 *
 *  ROM definitions
 *
 *************************************/

ROM_START( upscope )
	ROM_REGION(0x80000, "kickstart", 0)
	ROM_LOAD16_WORD_SWAP("315093-01.u2", 0x00000, 0x40000, CRC(a6ce1636) SHA1(11f9e62cf299f72184835b7b2a70a16333fc0d88))
	ROM_COPY("kickstart", 0x000000, 0x40000, 0x40000)

	ROM_REGION(0x080000, "user2", 0)
	ROM_LOAD16_BYTE( "upscope.u5",   0x000000, 0x008000, CRC(c109912e) SHA1(dcac9522e3c4818b2a02212b9173540fcf4bd463) )
	ROM_LOAD16_BYTE( "upscope.u13",  0x000001, 0x008000, CRC(9c8b071a) SHA1(69f9f8c17630ed568975e65dadc03213677a12dd) )
	ROM_LOAD16_BYTE( "upscope.u6",   0x010000, 0x008000, CRC(962f371e) SHA1(5682c62f34df2cc70f6125cf14203087670571db) )
	ROM_LOAD16_BYTE( "upscope.u14",  0x010001, 0x008000, CRC(1231bfc1) SHA1(f99adfabb01c1a15130f82f6a09d5458109a28bb) )

	ROM_LOAD16_BYTE( "upscope.u1",   0x040000, 0x008000, CRC(7a8de1fb) SHA1(30b87f07e0e0f66699402dffaeb0ca00c554f23e) )
	ROM_LOAD16_BYTE( "upscope.u9",   0x040001, 0x008000, CRC(5d16521e) SHA1(93e0a1644bd8adbb6f9fca6d4a252c11812c6ada) )
	ROM_LOAD16_BYTE( "upscope.u2",   0x050000, 0x008000, CRC(2089ef6b) SHA1(a12d87c8b368ffbadb556aca2e43e50348d34839) )
	ROM_LOAD16_BYTE( "upscope.u10",  0x050001, 0x008000, CRC(fbab44f5) SHA1(cd49f1f79e2181b3a9c40aebfba9d7c314dc909b) )

	ROM_LOAD16_BYTE( "upscope.u3",   0x060000, 0x008000, CRC(9b325528) SHA1(5bde1a42b62dd810843349ee9edf76e1c7521653) )
	ROM_LOAD16_BYTE( "upscope.u11",  0x060001, 0x008000, CRC(40e54449) SHA1(7d6ed97b87d74d80776cb682c78cd3b4a68633f4) )
	ROM_LOAD16_BYTE( "upscope.u4",   0x070000, 0x008000, CRC(6585ef1d) SHA1(b95e5e424266a50d4b63501278eb5d618fde5ba2) )
	ROM_LOAD16_BYTE( "upscope.u12",  0x070001, 0x008000, CRC(a909e388) SHA1(62acc30ab97d6a46a6d0782bb4ceb58061332724) )
ROM_END



/*************************************
 *
 *  Driver init
 *
 *************************************/

DRIVER_INIT_MEMBER(upscope_state, upscope)
{
	m_agnus_id = AGNUS_HR_NTSC;
	m_denise_id = DENISE;

	// allocate nvram
	machine().device<nvram_device>("nvram")->set_base(m_nvram, sizeof(m_nvram));
}



/*************************************
 *
 *  Game drivers
 *
 *************************************/

GAME( 1986, upscope, 0, upscope, upscope, upscope_state, upscope, ORIENTATION_FLIP_X, "Grand Products", "Up Scope", MACHINE_IMPERFECT_SOUND )