summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/ami1200.c
blob: 9661c1e1e4bc403536fa7d237ca54119282d65bf (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
/*
    Amiga 1200

    Preliminary MAME driver by Mariusz Wojcieszek
    CD-ROM controller by Ernesto Corvi
    Borrowed by incog for MESS

    2009-05 Fabio Priuli:
    Amiga 1200 support is just sketched (I basically took cd32 and removed Akiko). I connected
    the floppy drive in the same way as in amiga.c but it seems to be not working, since I
    tried to load WB3.1 with no success. However, this problem may be due to anything: maybe
    the floppy code must be connected elsewhere, or the .adf image is broken, or I made some
    stupid mistake in the CIA interfaces.
    Later, it could be wise to re-factor this source and merge the non-AGA code with
    mess/drivers/amiga.c
*/

#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/6526cia.h"
#include "machine/i2cmem.h"
#include "machine/amigafdc.h"
#include "machine/amigakbd.h"

#include "includes/amiga.h"
#include "includes/cd32.h"



class ami1200_state : public amiga_state
{
public:
	ami1200_state(const machine_config &mconfig, device_type type, const char *tag)
		: amiga_state(mconfig, type, tag) { }

	UINT16 m_potgo_value;
	int m_cd32_shifter[2];
	int m_oldstate[2];
	DECLARE_WRITE32_MEMBER(aga_overlay_w);
	DECLARE_DRIVER_INIT(a1200);
	DECLARE_WRITE8_MEMBER(ami1200_cia_0_porta_w);
	DECLARE_READ8_MEMBER(ami1200_cia_0_portb_r);
	DECLARE_WRITE8_MEMBER(ami1200_cia_0_portb_w);
	DECLARE_READ8_MEMBER(a1200_cia_0_portA_r);
};



#define A1200PAL_XTAL_X1  XTAL_28_37516MHz
#define A1200PAL_XTAL_X2  XTAL_4_433619MHz



static void handle_cd32_joystick_cia(ami1200_state *state, UINT8 pra, UINT8 dra);

WRITE32_MEMBER(ami1200_state::aga_overlay_w)
{
	if (ACCESSING_BITS_16_23)
	{
		data = (data >> 16) & 1;

		/* switch banks as appropriate */
		membank("bank1")->set_entry(data & 1);

		/* swap the write handlers between ROM and bank 1 based on the bit */
		if ((data & 1) == 0)
			/* overlay disabled, map RAM on 0x000000 */
			space.install_write_bank(0x000000, 0x1fffff, "bank1");
		else
			/* overlay enabled, map Amiga system ROM on 0x000000 */
			space.unmap_write(0x000000, 0x1fffff);
	}
}

/*************************************
 *
 *  CIA-A port A access:
 *
 *  PA7 = game port 1, pin 6 (fire)
 *  PA6 = game port 0, pin 6 (fire)
 *  PA5 = /RDY (disk ready)
 *  PA4 = /TK0 (disk track 00)
 *  PA3 = /WPRO (disk write protect)
 *  PA2 = /CHNG (disk change)
 *  PA1 = /LED (LED, 0=bright / audio filter control)
 *  PA0 = MUTE
 *
 *************************************/

WRITE8_MEMBER(ami1200_state::ami1200_cia_0_porta_w)
{
	device_t *device = machine().device("cia_0");

	/* bit 2 = Power Led on Amiga */
	set_led_status(machine(), 0, !BIT(data, 1));

	handle_cd32_joystick_cia(this, data, mos6526_r(device, space, 2));
}

/*************************************
 *
 *  CIA-A port B access:
 *
 *  PB7 = parallel data 7
 *  PB6 = parallel data 6
 *  PB5 = parallel data 5
 *  PB4 = parallel data 4
 *  PB3 = parallel data 3
 *  PB2 = parallel data 2
 *  PB1 = parallel data 1
 *  PB0 = parallel data 0
 *
 *************************************/

READ8_MEMBER(ami1200_state::ami1200_cia_0_portb_r)
{
	/* parallel port */
	logerror("%s:CIA0_portb_r\n", machine().describe_context());
	return 0xff;
}

WRITE8_MEMBER(ami1200_state::ami1200_cia_0_portb_w)
{
	/* parallel port */
	logerror("%s:CIA0_portb_w(%02x)\n", machine().describe_context(), data);
}

static ADDRESS_MAP_START( a1200_map, AS_PROGRAM, 32, ami1200_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x000000, 0x1fffff) AM_RAMBANK("bank1") AM_SHARE("chip_ram")
	AM_RANGE(0xbfa000, 0xbfa003) AM_WRITE(aga_overlay_w)
	AM_RANGE(0xbfd000, 0xbfefff) AM_READWRITE16_LEGACY(amiga_cia_r, amiga_cia_w, 0xffffffff)
	AM_RANGE(0xc00000, 0xdfffff) AM_READWRITE16_LEGACY(amiga_custom_r, amiga_custom_w, 0xffffffff) AM_SHARE("custom_regs")
	AM_RANGE(0xe80000, 0xe8ffff) AM_READWRITE16_LEGACY(amiga_autoconfig_r, amiga_autoconfig_w, 0xffffffff)
	AM_RANGE(0xf80000, 0xffffff) AM_ROM AM_REGION("user1", 0)	/* Kickstart */
ADDRESS_MAP_END


//int cd32_input_port_val = 0;
//int cd32_input_select = 0;

static void cd32_potgo_w(running_machine &machine, UINT16 data)
{
	ami1200_state *state = machine.driver_data<ami1200_state>();
	int i;

	state->m_potgo_value = state->m_potgo_value & 0x5500;
	state->m_potgo_value |= data & 0xaa00;

	for (i = 0; i < 8; i += 2)
	{
		UINT16 dir = 0x0200 << i;
		if (data & dir)
		{
			UINT16 d = 0x0100 << i;
			state->m_potgo_value &= ~d;
			state->m_potgo_value |= data & d;
		}
	}
	for (i = 0; i < 2; i++)
	{
		UINT16 p5dir = 0x0200 << (i * 4); /* output enable P5 */
		UINT16 p5dat = 0x0100 << (i * 4); /* data P5 */
		if ((state->m_potgo_value & p5dir) && (state->m_potgo_value & p5dat))
			state->m_cd32_shifter[i] = 8;
	}
}

static void handle_cd32_joystick_cia(ami1200_state *state, UINT8 pra, UINT8 dra)
{
	int i;

	for (i = 0; i < 2; i++)
	{
		UINT8 but = 0x40 << i;
		UINT16 p5dir = 0x0200 << (i * 4); /* output enable P5 */
		UINT16 p5dat = 0x0100 << (i * 4); /* data P5 */
		if (!(state->m_potgo_value & p5dir) || !(state->m_potgo_value & p5dat))
		{
			if ((dra & but) && (pra & but) != state->m_oldstate[i])
			{
				if (!(pra & but))
				{
					state->m_cd32_shifter[i]--;
					if (state->m_cd32_shifter[i] < 0)
						state->m_cd32_shifter[i] = 0;
				}
			}
		}
		state->m_oldstate[i] = pra & but;
	}
}


static INPUT_PORTS_START( a1200 )
	PORT_START("CIA0PORTA")
	PORT_BIT( 0x3f, IP_ACTIVE_LOW, IPT_SPECIAL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)

	PORT_START("CIA0PORTB")
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("JOY0DAT")
	PORT_BIT( 0x0303, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ami1200_state,amiga_joystick_convert, "P1JOY")
	PORT_BIT( 0xfcfc, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("JOY1DAT")
	PORT_BIT( 0x0303, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ami1200_state,amiga_joystick_convert, "P2JOY")
	PORT_BIT( 0xfcfc, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("POTGO")
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0xaaff, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("P1JOY")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)

	PORT_START("P2JOY")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)

	PORT_START("P0MOUSEX")
	PORT_BIT( 0xff, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(1)

	PORT_START("P0MOUSEY")
	PORT_BIT( 0xff, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(1)

	PORT_START("P1MOUSEX")
	PORT_BIT( 0xff, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(2)

	PORT_START("P1MOUSEY")
	PORT_BIT( 0xff, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(100) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_PLAYER(2)
INPUT_PORTS_END


/*************************************
 *
 *  Sound definitions
 *
 *************************************/

READ8_MEMBER(ami1200_state::a1200_cia_0_portA_r)
{
	UINT8 ret = machine().root_device().ioport("CIA0PORTA")->read() & 0xc0;	/* Gameport 1 and 0 buttons */
	ret |= machine().device<amiga_fdc>("fdc")->ciaapra_r();
	return ret;
}


static const mos6526_interface a1200_cia_0_intf =
{
	DEVCB_DEVICE_LINE("cia_0", amiga_cia_0_irq),									/* irq_func */
	DEVCB_NULL,	/* pc_func */
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_DRIVER_MEMBER(ami1200_state,a1200_cia_0_portA_r),
	DEVCB_DRIVER_MEMBER(ami1200_state,ami1200_cia_0_porta_w),		/* port A */
	DEVCB_DRIVER_MEMBER(ami1200_state,ami1200_cia_0_portb_r),
	DEVCB_DRIVER_MEMBER(ami1200_state,ami1200_cia_0_portb_w)		/* port B */
};

static const mos6526_interface a1200_cia_1_intf =
{
	DEVCB_DEVICE_LINE("cia_1", amiga_cia_1_irq),									/* irq_func */
	DEVCB_NULL,	/* pc_func */
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL,									/* port A */
	DEVCB_NULL,
	DEVCB_DEVICE_MEMBER("fdc", amiga_fdc, ciaaprb_w)			/* port B */
};

static SLOT_INTERFACE_START( amiga_floppies )
	SLOT_INTERFACE( "35dd", FLOPPY_35_DD )
SLOT_INTERFACE_END


static MACHINE_CONFIG_START( a1200n, ami1200_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M68EC020, AMIGA_68EC020_NTSC_CLOCK) /* 14.3 Mhz */
	MCFG_CPU_PROGRAM_MAP(a1200_map)

//  MCFG_CPU_ADD("keyboard_mpu", MC68HC05)

	MCFG_MACHINE_RESET_OVERRIDE(ami1200_state,amiga)

	/* video hardware */
	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)

	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(59.997)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MCFG_SCREEN_SIZE(512*2, 312)
	MCFG_SCREEN_VISIBLE_AREA((129-8-8)*2, (449+8-1+8)*2, 44-8, 300+8-1)
	MCFG_SCREEN_UPDATE_DRIVER(ami1200_state, screen_update_amiga_aga)

	MCFG_VIDEO_START_OVERRIDE(ami1200_state,amiga_aga)

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

	MCFG_SOUND_ADD("amiga", AMIGA, XTAL_28_63636MHz/8)
	MCFG_SOUND_ROUTE(0, "lspeaker", 0.25)
	MCFG_SOUND_ROUTE(1, "rspeaker", 0.25)
	MCFG_SOUND_ROUTE(2, "rspeaker", 0.25)
	MCFG_SOUND_ROUTE(3, "lspeaker", 0.25)

	/* cia */
	MCFG_MOS8520_ADD("cia_0", AMIGA_68EC020_NTSC_CLOCK / 10, 0, a1200_cia_0_intf)
	MCFG_MOS8520_ADD("cia_1", AMIGA_68EC020_NTSC_CLOCK / 10, 0, a1200_cia_1_intf)

	/* fdc */
	MCFG_AMIGA_FDC_ADD("fdc", AMIGA_68EC020_NTSC_CLOCK/2)
	MCFG_FLOPPY_DRIVE_ADD("fd0", amiga_floppies, "35dd", 0, amiga_fdc::floppy_formats)
	MCFG_FLOPPY_DRIVE_ADD("fd1", amiga_floppies, 0,      0, amiga_fdc::floppy_formats)
	MCFG_FLOPPY_DRIVE_ADD("fd2", amiga_floppies, 0,      0, amiga_fdc::floppy_formats)
	MCFG_FLOPPY_DRIVE_ADD("fd3", amiga_floppies, 0,      0, amiga_fdc::floppy_formats)
	
	MCFG_AMIGA_KEYBOARD_ADD("kbd")
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( a1200p, a1200n )

	/* adjust for PAL specs */
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_CLOCK(A1200PAL_XTAL_X1/2) /* 14.18758 MHz */

	/* video hardware */
	MCFG_SCREEN_MODIFY("screen")
	MCFG_SCREEN_REFRESH_RATE(50)

	/* sound hardware */
	MCFG_SOUND_MODIFY("amiga")
	MCFG_SOUND_CLOCK(A1200PAL_XTAL_X1/8) /* 3.546895 MHz */

	/* cia */
	MCFG_DEVICE_MODIFY("cia_0")
	MCFG_DEVICE_CLOCK(A1200PAL_XTAL_X1/20)
	MCFG_DEVICE_MODIFY("cia_1")
	MCFG_DEVICE_CLOCK(A1200PAL_XTAL_X1/20)

	/* fdc */
	MCFG_DEVICE_MODIFY("fdc")
	MCFG_DEVICE_CLOCK(A1200PAL_XTAL_X1/4)
MACHINE_CONFIG_END


/***************************************************************************
    ROM DEFINITIONS
***************************************************************************/

ROM_START( a1200n )
	ROM_REGION32_BE(0x080000, "user1", 0)
	ROM_DEFAULT_BIOS("kick31")
	ROM_SYSTEM_BIOS(0, "kick30", "Kickstart 3.0 (39.106)")
	ROMX_LOAD("391523-01.u6a", 0x000000, 0x040000, CRC(c742a412) SHA1(999eb81c65dfd07a71ee19315d99c7eb858ab186), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(1))
	ROMX_LOAD("391524-01.u6b", 0x000002, 0x040000, CRC(d55c6ec6) SHA1(3341108d3a402882b5ef9d3b242cbf3c8ab1a3e9), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(1))
	ROM_SYSTEM_BIOS(1, "kick31", "Kickstart 3.1 (40.068)")
	ROMX_LOAD("391773-01.u6a", 0x000000, 0x040000, CRC(08dbf275) SHA1(b8800f5f909298109ea69690b1b8523fa22ddb37), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(2))	// ROM_LOAD32_WORD_SWAP!
	ROMX_LOAD("391774-01.u6b", 0x000002, 0x040000, CRC(16c07bf8) SHA1(90e331be1970b0e53f53a9b0390b51b59b3869c2), ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(2))

	// COMMODORE | 391508-01 REV0 | KEYBOARD MPU
	ROM_REGION(0x1040, "keyboard_rev0", 0)
	ROM_LOAD("391508-01.u13", 0x0000, 0x1040, NO_DUMP)

	// Amiga Tech REV1 Keyboard MPU
	ROM_REGION(0x2f40, "keyboard_rev1", 0)
	ROM_LOAD("391508-02.u13", 0x0000, 0x2f40, NO_DUMP)
ROM_END

#define rom_a1200p    rom_a1200n


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

DRIVER_INIT_MEMBER(ami1200_state,a1200)
{
	static const amiga_machine_interface cd32_intf =
	{
		AGA_CHIP_RAM_MASK,
		NULL, NULL,			/* joy0dat_r & joy1dat_r */
		cd32_potgo_w,		/* potgo_w */
		NULL,				/* serdat_w */
		NULL,				/* scanline0_callback */
		NULL,				/* reset_callback */
		NULL,				/* nmi_callback */
		FLAGS_AGA_CHIPSET	/* flags */
	};

	/* configure our Amiga setup */
	amiga_machine_config(machine(), &cd32_intf);

	/* set up memory */
	membank("bank1")->configure_entry(0, m_chip_ram);
	membank("bank1")->configure_entry(1, machine().root_device().memregion("user1")->base());
}


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

/*    YEAR  NAME     PARENT   COMPAT  MACHINE INPUT   INIT      COMPANY       FULLNAME */
COMP( 1992, a1200n,  0,       0,      a1200n, a1200, ami1200_state,  a1200,  "Commodore Business Machines",  "Amiga 1200 (NTSC)" , GAME_NOT_WORKING )
COMP( 1992, a1200p,  a1200n,  0,      a1200p, a1200, ami1200_state,  a1200,  "Commodore Business Machines",  "Amiga 1200 (PAL)" , GAME_NOT_WORKING  )