MAME SVN History

199869 Revisions

r34153 Thursday 1st January, 2015 at 22:57:25 UTC by Wilbert Pol
Some atari 8bit cassette work, not working yet (nw)

[src/emu/bus/a8sio]	a8sio.h cassette.c cassette.h
[src/emu/sound]	pokey.c pokey.h
[src/mess/drivers]	atari400.c

trunk/src/emu/bus/a8sio/a8sio.h
r242664	r242665
45	45	MCFG_DEVICE_SLOT_INTERFACE(a8sio_cards, _def_slot, false) \
46	46	a8sio_slot_device::static_set_a8sio_slot(*device, _nbtag, _tag);
47	47
	48	#define MCFG_A8SIO_DATA_IN_CB(_devcb) \
	49	devcb = &a8sio_device::set_data_in_callback(*device, DEVCB_##_devcb);
48	50
	51
49	52	class a8sio_slot_device : public device_t,
50	53	public device_slot_interface
51	54	{

trunk/src/emu/bus/a8sio/cassette.c
r242664	r242665
26	26	//**************************************************************************
27	27
28	28	const device_type A8SIO_CASSETTE = &device_creator<a8sio_cassette_device>;
	29	const device_timer_id TIMER_CASSETTE_READ = 1;
29	30
30	31	static MACHINE_CONFIG_FRAGMENT( cassette )
31	32	MCFG_CASSETTE_ADD("cassette")
32		MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED)
	33	//MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED)
	34	MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY)
33	35	MCFG_CASSETTE_INTERFACE("atari8bit_cass")
34	36	MACHINE_CONFIG_END
35	37
r242664	r242665
46	48	: device_t(mconfig, A8SIO_CASSETTE, "Atari 8 bit cassette", tag, owner, clock, "a8sio_cass", __FILE__)
47	49	, device_a8sio_card_interface(mconfig, *this)
48	50	, m_cassette(*this, "cassette")
	51	, m_old_cass_signal(0)
	52	, m_signal_count(0)
49	53	{
50	54	}
51	55
r242664	r242665
53	57	: device_t(mconfig, type, name, tag, owner, clock, shortname, source)
54	58	, device_a8sio_card_interface(mconfig, *this)
55	59	, m_cassette(*this, "cassette")
	60	, m_old_cass_signal(0)
	61	, m_signal_count(0)
56	62	{
57	63	}
58	64
59	65	void a8sio_cassette_device::device_start()
60	66	{
61	67	set_a8sio_device();
	68
	69	save_item(NAME(m_old_cass_signal));
	70	save_item(NAME(m_signal_count));
	71
	72	m_read_timer = timer_alloc(TIMER_CASSETTE_READ);
62	73	}
63	74
64	75	void a8sio_cassette_device::device_reset()
r242664	r242665
68	79	WRITE_LINE_MEMBER( a8sio_cassette_device::motor_w )
69	80	{
70	81	//printf("a8sio_cassette::motor_w %d\n", state);
	82	if (!state)
	83	{
	84	m_cassette->change_state(CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR);
	85	m_read_timer->adjust(attotime::zero, 0, attotime::from_hz(44100));
	86	}
	87	else
	88	{
	89	m_cassette->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
	90	m_read_timer->reset();
	91	}
71	92	}
72	93
	94	void a8sio_cassette_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
	95	{
	96	switch (id)
	97	{
	98	case TIMER_CASSETTE_READ:
	99	UINT8 cass_signal = m_cassette->input() < 0 ? 0 : 1;
	100
	101	if (m_signal_count < 20)
	102	{
	103	m_signal_count++;
	104	}
	105
	106	if (cass_signal != m_old_cass_signal)
	107	{
	108	//printf("cass_signal: %d, count: %d, data: %d\n", cass_signal, m_signal_count, m_signal_count < 5 ? 1 : 0);
	109	// ~4 kHz -> 0
	110	// ~5 kHz -> 1
	111	m_a8sio->data_in_w((m_signal_count < 5) ? 1 : 0);
	112	m_signal_count = 0;
	113	m_old_cass_signal = cass_signal;
	114	}
	115	break;
	116	}
	117	}
	118

trunk/src/emu/bus/a8sio/cassette.h
r242664	r242665
38	38	protected:
39	39	virtual void device_start();
40	40	virtual void device_reset();
	41	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
41	42
42	43	required_device<cassette_image_device> m_cassette;
	44	emu_timer *m_read_timer;
	45
	46	UINT8 m_old_cass_signal;
	47	UINT8 m_signal_count;
43	48	};
44	49
45	50	// device type definition

trunk/src/emu/sound/pokey.c
r242664	r242665
1055	1055
1056	1056	}
1057	1057
	1058	WRITE_LINE_MEMBER( pokey_device::sid_w )
	1059	{
	1060	if (state)
	1061	{
	1062	m_SKSTAT \|= SK_SERIN;
	1063	}
	1064	else
	1065	{
	1066	m_SKSTAT &= ~SK_SERIN;
	1067	}
	1068	}
	1069
1058	1070	void pokey_device::serin_ready(int after)
1059	1071	{
1060	1072	timer_set(m_clock_period * after, 5, 0);

trunk/src/emu/sound/pokey.h
r242664	r242665
234	234	UINT8 read(offs_t offset);
235	235	void write(offs_t offset, UINT8 data);
236	236
	237	DECLARE_WRITE_LINE_MEMBER( sid_w ); // pin 24
237	238	void serin_ready(int after);
238	239
239	240	// analog output configuration

trunk/src/mess/drivers/atari400.c
r242664	r242665
2100	2100	MCFG_PIA_CB2_HANDLER(DEVWRITELINE("fdc", atari_fdc_device, pia_cb2_w))
2101	2101
2102	2102	MCFG_DEVICE_ADD("a8sio", A8SIO, 0)
	2103	MCFG_A8SIO_DATA_IN_CB(DEVWRITELINE("pokey", pokey_device, sid_w))
2103	2104	MCFG_A8SIO_SLOT_ADD("a8sio", "sio", NULL)
2104	2105
2105	2106	/* sound hardware */

https://github.com/mamedev/mame/commit/e7f8f57303ed93e4e9da4e5f0b6f995fbb0acc68

199869 Revisions