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author Wilbert Pol <wilbertpol@users.noreply.github.com>2015-01-01 23:57:11 +0100
committer Wilbert Pol <wilbertpol@users.noreply.github.com>2015-01-01 23:57:25 +0100
commite7f8f57303ed93e4e9da4e5f0b6f995fbb0acc68 (patch)
tree40d682564f3bcf36f7e3c83e25267bb1a078e6ca /src
parentd18d667665f1971ff84e853a6663957fc88c18ff (diff)
Some atari 8bit cassette work, not working yet (nw)
Diffstat (limited to 'src')
-rw-r--r--src/emu/bus/a8sio/a8sio.h3
-rw-r--r--src/emu/bus/a8sio/cassette.c48
-rw-r--r--src/emu/bus/a8sio/cassette.h5
-rw-r--r--src/emu/sound/pokey.c12
-rw-r--r--src/emu/sound/pokey.h1
-rw-r--r--src/mess/drivers/atari400.c1
6 files changed, 69 insertions, 1 deletions
diff --git a/src/emu/bus/a8sio/a8sio.h b/src/emu/bus/a8sio/a8sio.h
index ffe305ffd17..29e548946d4 100644
--- a/src/emu/bus/a8sio/a8sio.h
+++ b/src/emu/bus/a8sio/a8sio.h
@@ -45,6 +45,9 @@
MCFG_DEVICE_SLOT_INTERFACE(a8sio_cards, _def_slot, false) \
a8sio_slot_device::static_set_a8sio_slot(*device, _nbtag, _tag);
+#define MCFG_A8SIO_DATA_IN_CB(_devcb) \
+ devcb = &a8sio_device::set_data_in_callback(*device, DEVCB_##_devcb);
+
class a8sio_slot_device : public device_t,
public device_slot_interface
diff --git a/src/emu/bus/a8sio/cassette.c b/src/emu/bus/a8sio/cassette.c
index 395633b2e36..cc2af705dad 100644
--- a/src/emu/bus/a8sio/cassette.c
+++ b/src/emu/bus/a8sio/cassette.c
@@ -26,10 +26,12 @@ TODO:
//**************************************************************************
const device_type A8SIO_CASSETTE = &device_creator<a8sio_cassette_device>;
+const device_timer_id TIMER_CASSETTE_READ = 1;
static MACHINE_CONFIG_FRAGMENT( cassette )
MCFG_CASSETTE_ADD("cassette")
- MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED)
+ //MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED)
+ MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY)
MCFG_CASSETTE_INTERFACE("atari8bit_cass")
MACHINE_CONFIG_END
@@ -46,6 +48,8 @@ a8sio_cassette_device::a8sio_cassette_device(const machine_config &mconfig, cons
: device_t(mconfig, A8SIO_CASSETTE, "Atari 8 bit cassette", tag, owner, clock, "a8sio_cass", __FILE__)
, device_a8sio_card_interface(mconfig, *this)
, m_cassette(*this, "cassette")
+ , m_old_cass_signal(0)
+ , m_signal_count(0)
{
}
@@ -53,12 +57,19 @@ a8sio_cassette_device::a8sio_cassette_device(const machine_config &mconfig, devi
: device_t(mconfig, type, name, tag, owner, clock, shortname, source)
, device_a8sio_card_interface(mconfig, *this)
, m_cassette(*this, "cassette")
+ , m_old_cass_signal(0)
+ , m_signal_count(0)
{
}
void a8sio_cassette_device::device_start()
{
set_a8sio_device();
+
+ save_item(NAME(m_old_cass_signal));
+ save_item(NAME(m_signal_count));
+
+ m_read_timer = timer_alloc(TIMER_CASSETTE_READ);
}
void a8sio_cassette_device::device_reset()
@@ -68,5 +79,40 @@ void a8sio_cassette_device::device_reset()
WRITE_LINE_MEMBER( a8sio_cassette_device::motor_w )
{
//printf("a8sio_cassette::motor_w %d\n", state);
+ if (!state)
+ {
+ m_cassette->change_state(CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR);
+ m_read_timer->adjust(attotime::zero, 0, attotime::from_hz(44100));
+ }
+ else
+ {
+ m_cassette->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
+ m_read_timer->reset();
+ }
+}
+
+void a8sio_cassette_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
+{
+ switch (id)
+ {
+ case TIMER_CASSETTE_READ:
+ UINT8 cass_signal = m_cassette->input() < 0 ? 0 : 1;
+
+ if (m_signal_count < 20)
+ {
+ m_signal_count++;
+ }
+
+ if (cass_signal != m_old_cass_signal)
+ {
+ //printf("cass_signal: %d, count: %d, data: %d\n", cass_signal, m_signal_count, m_signal_count < 5 ? 1 : 0);
+ // ~4 kHz -> 0
+ // ~5 kHz -> 1
+ m_a8sio->data_in_w((m_signal_count < 5) ? 1 : 0);
+ m_signal_count = 0;
+ m_old_cass_signal = cass_signal;
+ }
+ break;
+ }
}
diff --git a/src/emu/bus/a8sio/cassette.h b/src/emu/bus/a8sio/cassette.h
index 6388c16d196..d9b59568864 100644
--- a/src/emu/bus/a8sio/cassette.h
+++ b/src/emu/bus/a8sio/cassette.h
@@ -38,8 +38,13 @@ public:
protected:
virtual void device_start();
virtual void device_reset();
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
required_device<cassette_image_device> m_cassette;
+ emu_timer *m_read_timer;
+
+ UINT8 m_old_cass_signal;
+ UINT8 m_signal_count;
};
// device type definition
diff --git a/src/emu/sound/pokey.c b/src/emu/sound/pokey.c
index 2469a6a2126..8a7e831d32b 100644
--- a/src/emu/sound/pokey.c
+++ b/src/emu/sound/pokey.c
@@ -1055,6 +1055,18 @@ void pokey_device::write_internal(offs_t offset, UINT8 data)
}
+WRITE_LINE_MEMBER( pokey_device::sid_w )
+{
+ if (state)
+ {
+ m_SKSTAT |= SK_SERIN;
+ }
+ else
+ {
+ m_SKSTAT &= ~SK_SERIN;
+ }
+}
+
void pokey_device::serin_ready(int after)
{
timer_set(m_clock_period * after, 5, 0);
diff --git a/src/emu/sound/pokey.h b/src/emu/sound/pokey.h
index 7812830ab5d..dbfeb8326d6 100644
--- a/src/emu/sound/pokey.h
+++ b/src/emu/sound/pokey.h
@@ -234,6 +234,7 @@ public:
UINT8 read(offs_t offset);
void write(offs_t offset, UINT8 data);
+ DECLARE_WRITE_LINE_MEMBER( sid_w ); // pin 24
void serin_ready(int after);
// analog output configuration
diff --git a/src/mess/drivers/atari400.c b/src/mess/drivers/atari400.c
index 9ffbf09ec93..c800cbdad83 100644
--- a/src/mess/drivers/atari400.c
+++ b/src/mess/drivers/atari400.c
@@ -2100,6 +2100,7 @@ static MACHINE_CONFIG_START( atari_common_nodac, a400_state )
MCFG_PIA_CB2_HANDLER(DEVWRITELINE("fdc", atari_fdc_device, pia_cb2_w))
MCFG_DEVICE_ADD("a8sio", A8SIO, 0)
+ MCFG_A8SIO_DATA_IN_CB(DEVWRITELINE("pokey", pokey_device, sid_w))
MCFG_A8SIO_SLOT_ADD("a8sio", "sio", NULL)
/* sound hardware */