MAME SVN History

199869 Revisions

r21230 Wednesday 20th February, 2013 at 20:06:48 UTC by Wilbert Pol
sp0256.c: [Wilbert Pol] - Added a little delay before settling LRQ when resetting the device. Fixes MT05103. - When reading the LRQ signal, force an update of the stream. This fixes support for 'The Voice' in 'Turtles' for the odyssey2.

[src/emu/sound]	sp0256.c sp0256.h
[src/mess/drivers]	odyssey2.c

trunk/src/emu/sound/sp0256.c
r21229	r21230
1275	1275	{
1276	1276	sp0256_state *sp = get_safe_token(device);
1277	1277
	1278	// force stream update
	1279	sp->stream->update();
	1280
1278	1281	return sp->lrq == 0x8000;
1279	1282	}
1280	1283
r21229	r21230
1282	1285	{
1283	1286	sp0256_state *sp = get_safe_token(device);
1284	1287
	1288	// TODO: force stream update??
	1289
1285	1290	return sp->sby_line;
1286	1291	}
1287	1292
r21229	r21230
1390	1395	void sp0256_device::device_start()
1391	1396	{
1392	1397	DEVICE_START_NAME( sp0256 )(this);
	1398
	1399	m_lrq_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(sp0256_device::set_lrq_timer_proc),this));
1393	1400	}
1394	1401
	1402	TIMER_CALLBACK_MEMBER(sp0256_device::set_lrq_timer_proc)
	1403	{
	1404	sp0256_state *sp = get_safe_token(this);
	1405
	1406	sp->lrq = 0x8000;
	1407	}
	1408
	1409
1395	1410	//-------------------------------------------------
1396	1411	// device_reset - device-specific reset
1397	1412	//-------------------------------------------------
r21229	r21230
1399	1414	void sp0256_device::device_reset()
1400	1415	{
1401	1416	DEVICE_RESET_NAME( sp0256 )(this);
	1417
	1418	sp0256_state *sp = get_safe_token(this);
	1419	sp->lrq = 0;
	1420	m_lrq_timer->adjust( attotime::from_ticks( 50, m_clock ) );
1402	1421	}
1403	1422
1404	1423	//-------------------------------------------------

trunk/src/emu/sound/sp0256.h
r21229	r21230
79	79
80	80	// access to legacy token
81	81	void *token() const { assert(m_token != NULL); return m_token; }
	82
	83	TIMER_CALLBACK_MEMBER(set_lrq_timer_proc);
	84
82	85	protected:
83	86	// device-level overrides
84	87	virtual void device_config_complete();
r21229	r21230
90	93	private:
91	94	// internal state
92	95	void *m_token;
	96	emu_timer *m_lrq_timer;
93	97	};
94	98
95	99	extern const device_type SP0256;

trunk/src/mess/drivers/odyssey2.c
r21229	r21230
333	333
334	334	READ8_MEMBER(odyssey2_state::t0_read)
335	335	{
336		return sp0256_lrq_r( m_sp0256 ) ? 1 : 0;
	336	return sp0256_lrq_r( m_sp0256 ) ? 0 : 1;
337	337	}
338	338
339	339
r21229	r21230
438	438	}
439	439	else
440	440	{
441		/* TODO: Reset sp0256 in this case */
442	441	m_sp0256->reset();
443	442	}
444	443	}

199869 Revisions