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r36956 Sunday 5th April, 2015 at 18:07:50 UTC by Angelo Salese
Part I of refactoring, nw

[src/emu/sound]

l7a1045_l6028_dsp_a.c l7a1045_l6028_dsp_a.h

trunk/src/emu/sound/l7a1045_l6028_dsp_a.c

r245467	r245468
1	1	/***************************************************************************
2	2
3		L7A1045 L6028 DSP-A
	3	L7A1045 L6028 DSP-A
4	4	(QFP120 package)
5	5
6	6	this is the audio chip used on the following
r245467	r245468
44	44
45	45	7  ----------------   ----------------   llllllllrrrrrrrr left/right volume
46	46
47		8  ----------------   ----------------   ---------------- (read only?)
	47	8  ----------------   ----------------   ---------------- (read only?)
48	48
49	49	9  ----------------   ----------------   ---------------- (read only?)
50	50
r245467	r245468
149	149	if ((start + pos) >= end)
150	150	{
151	151	m_key &= ~(1 << i);
152
	152
153	153	}
154	154
155	155	sample = (INT8)m_rom[(start + pos) & (m_rom_size-1)];
r245467	r245468
168	168
169	169	WRITE16_MEMBER( l7a1045_sound_device::l7a1045_sound_w )
170	170	{
171		m_stream->update();
	171	m_stream->update(); // TODO
172	172
173		switch (offset)
174		{
175		case 0x00:l7a1045_sound_select_w(space, offset, data, mem_mask); break;
176		case 0x01:l7a1045_sound_data_02_w(space, offset, data, mem_mask); break;
177		case 0x02:l7a1045_sound_data_04_w(space, offset, data, mem_mask); break;
178		case 0x03:l7a1045_sound_data_06_w(space, offset, data, mem_mask); break;
179		}
180
	173	if(offset == 0)
	174	sound_select_w(space, offset, data, mem_mask);
	175	else
	176	sound_data_w(space,offset - 1,data,mem_mask);
181	177	}
182	178
183	179
r245467	r245468
199	195	}
200	196
201	197
202		WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_select_w)
	198	WRITE16_MEMBER(l7a1045_sound_device::sound_select_w)
203	199	{
204	200	// I'm guessing these addresses are the sound chip / DSP?
205	201
r245467	r245468
222	218
223	219	}
224	220
225		WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_data_02_w) // upper? word of various registers?
	221	WRITE16_MEMBER(l7a1045_sound_device::sound_data_w)
226	222	{
227		m_audiodat[m_audioregister][m_audiochannel].dat[2] = data;
	223	//   if(m_audioregister == 0)
	224	//      printf("%04x %04x (%04x|%04x %04x)\n",offset,data,offset ^ 2,m_audioregister,m_audiochannel);
228	225
229		// write with registers 00, 01, 04, 06, 05, 03, 07, 02 on startup
230		// groups writes of register 0a per channel
	226	m_audiodat[m_audioregister][m_audiochannel].dat[offset] = data;
231	227
232		// register 08 / 09 not written?
233		switch (m_audioregister)
	228	if(offset == 0)
234	229	{
235		default:
236	230
237		case 0x08:
238		case 0x09:
239		printf("%08x: unexpected write port 0x0002 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
240		break;
241
242		//   case 0x00:
243		case 0x01:
244		case 0x04:
245		case 0x06:
246		case 0x05:
247		case 0x03:
248		case 0x02:
249		case 0x07:
250
251		case 0x0a:
252		//   printf("%08x: write port 0x0002 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
253		break;
254
	231	switch (m_audioregister)
	232	{
255	233	case 0x00:
256	234	// hack
257		l7a1045_voice *vptr = &m_voice[m_audiochannel];
	235	l7a1045_voice *vptr = &m_voice[m_audiochannel];
258	236
259	237	m_key |= 1 << m_audiochannel;
260	238
261	239	vptr->frac = 0;
262	240	vptr->pos = 0;
263	241
264		vptr->start = (m_audiodat[0][m_audiochannel].dat[0] & 0x000f) << (16 + 4);
265		vptr->start |=   (m_audiodat[0][m_audiochannel].dat[1] & 0xffff) << (4);
266		vptr->start |=   (m_audiodat[0][m_audiochannel].dat[2] & 0xf000) >> (12);
	242	vptr->start = (m_audiodat[0][m_audiochannel].dat[2] & 0x000f) << (16 + 4);
	243	vptr->start |= (m_audiodat[0][m_audiochannel].dat[1] & 0xffff) << (4);
	244	vptr->start |= (m_audiodat[0][m_audiochannel].dat[0] & 0xf000) >> (12);
267	245
268	246	vptr->start &= m_rom_size - 1;
269	247
270	248	//printf("%08x: REGISTER 00 write port 0x0002 chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
271	249	break;
272	250	}
273
274	251	}
275
276		WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_data_04_w) // lower? word of various registers?
277		{
278		m_audiodat[m_audioregister][m_audiochannel].dat[1] = data;
279
280		// write with registers 00, 04, 06, 05, 03, 07, 02, 01 on startup
281		// groups writes of register 0a per channel
282
283		// register 08 / 09 not written?
284
285		switch (m_audioregister)
286		{
287		default:
288
289		case 0x08:
290		case 0x09:
291		printf("%08x: unexpected write port 0x0004 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
292		break;
293
294		//   case 0x00:
295		case 0x04:
296		case 0x06:
297		case 0x05:
298		case 0x03:
299		case 0x07:
300		case 0x01:
301		case 0x02:
302
303		case 0x0a:
304		//printf("%08x: write port 0x0004 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
305		break;
306
307		case 0x00:
308		//printf("%08x: REGISTER 00 write port 0x0004 chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
309		break;
310		}
311
312	252	}
313		WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_data_06_w) // other part? of various registers.. less used than 02/04, maybe flags?
314		{
315		// 00 / 01 written at startup
316		// nothing else used?
317	253
318		m_audiodat[m_audioregister][m_audiochannel].dat[0] = data;
319		switch (m_audioregister)
320		{
321		default:
322	254
323		case 0x02:
324		case 0x03:
325		case 0x04:
326		case 0x05:
327		case 0x06:
328		case 0x07:
329		case 0x08:
330		case 0x09:
331		case 0x0a:
332		printf("%08x: unexpected write port 0x0006 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
333		break;
334
335		//   case 0x00:
336		case 0x01:
337		//printf("%08x: unexpected write port 0x0006 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
338		break;
339
340		case 0x00:
341
342		// it writes 2 values here for each sample
343		// the 2nd one seems to contain the upper 4 bits of the sample address
344		// so why does it write different data first?
345		//printf("%08x: REGISTER 00 write port 0x0006 chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
346		break;
347
348		}
349		}
350
351
352	255	READ16_MEMBER(l7a1045_sound_device::l7a1045_sound_port_0004_r)
353	256	{
354	257	// it writes the channel select before reading this.. so either it works on channels, or the command..

trunk/src/emu/sound/l7a1045_l6028_dsp_a.h

r245467	r245468
15	15	UINT32 start;
16	16	UINT32 pos;
17	17	UINT32 frac;
18
	18
19	19	};
20	20
21	21	// ======================> l7a1045_sound_device
r245467	r245468
55	55
56	56	l7a1045_48bit_data m_audiodat[0x10][0x20];
57	57
58		DECLARE_WRITE16_MEMBER(l7a1045_sound_select_w);
59		DECLARE_WRITE16_MEMBER(l7a1045_sound_data_02_w);
60		DECLARE_WRITE16_MEMBER(l7a1045_sound_data_04_w);
61		DECLARE_WRITE16_MEMBER(l7a1045_sound_data_06_w);
	58	DECLARE_WRITE16_MEMBER(sound_select_w);
	59	DECLARE_WRITE16_MEMBER(sound_data_w);
62	60
63	61	DECLARE_READ16_MEMBER(l7a1045_sound_port_0004_r);
64	62	DECLARE_READ16_MEMBER(l7a1045_sound_port_0006_r);

https://github.com/mamedev/mame/commit/efb5123b0c00a823fc916f7fb072409e3ab55cd0

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