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Diffstat (limited to 'src/emu/sound/awacs.c')
-rw-r--r--src/emu/sound/awacs.c117
1 files changed, 58 insertions, 59 deletions
diff --git a/src/emu/sound/awacs.c b/src/emu/sound/awacs.c
index 6664082bd6c..a7b8dd4faea 100644
--- a/src/emu/sound/awacs.c
+++ b/src/emu/sound/awacs.c
@@ -24,7 +24,7 @@ const device_type AWACS = &device_creator<awacs_device>;
awacs_device::awacs_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, AWACS, "AWACS", tag, owner, clock),
- device_sound_interface(mconfig, *this)
+ device_sound_interface(mconfig, *this)
{
}
@@ -57,12 +57,12 @@ void awacs_device::device_reset()
memset(m_regs, 0, sizeof(m_regs));
- m_play_ptr = 0;
- m_buffer_size = 0;
- m_playback_enable = false;
- m_dma_space = NULL;
- m_dma_offset_0 = m_dma_offset_1 = 0;
- m_buffer_num = 0;
+ m_play_ptr = 0;
+ m_buffer_size = 0;
+ m_playback_enable = false;
+ m_dma_space = NULL;
+ m_dma_offset_0 = m_dma_offset_1 = 0;
+ m_buffer_num = 0;
}
//-------------------------------------------------
@@ -82,38 +82,38 @@ void awacs_device::device_timer(emu_timer &timer, device_timer_id tid, int param
void awacs_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
stream_sample_t *outL, *outR;
- int offset = (m_buffer_num == 0) ? m_dma_offset_0 : m_dma_offset_1;
+ int offset = (m_buffer_num == 0) ? m_dma_offset_0 : m_dma_offset_1;
outL = outputs[0];
outR = outputs[1];
- if (m_playback_enable)
- {
- for (int i = 0; i < samples; i++)
- {
- outL[i] = (INT16)m_dma_space->read_word(offset + m_play_ptr);
- outR[i] = (INT16)m_dma_space->read_word(offset + m_play_ptr + 2);
- m_play_ptr += 4;
- }
-
- // out of buffer?
- if (m_play_ptr >= m_buffer_size)
- {
- UINT8 bufflag[2] = { 0x40, 0x80 };
-
- m_regs[0x18] |= bufflag[m_buffer_num];
- m_buffer_num ^= 1;
- m_play_ptr = 0;
- }
- }
- else
- {
- for (int i = 0; i < samples; i++)
- {
- outL[i] = 0;
- outR[i] = 0;
- }
- }
+ if (m_playback_enable)
+ {
+ for (int i = 0; i < samples; i++)
+ {
+ outL[i] = (INT16)m_dma_space->read_word(offset + m_play_ptr);
+ outR[i] = (INT16)m_dma_space->read_word(offset + m_play_ptr + 2);
+ m_play_ptr += 4;
+ }
+
+ // out of buffer?
+ if (m_play_ptr >= m_buffer_size)
+ {
+ UINT8 bufflag[2] = { 0x40, 0x80 };
+
+ m_regs[0x18] |= bufflag[m_buffer_num];
+ m_buffer_num ^= 1;
+ m_play_ptr = 0;
+ }
+ }
+ else
+ {
+ for (int i = 0; i < samples; i++)
+ {
+ outL[i] = 0;
+ outR[i] = 0;
+ }
+ }
}
//-------------------------------------------------
@@ -122,7 +122,7 @@ void awacs_device::sound_stream_update(sound_stream &stream, stream_sample_t **i
READ8_MEMBER( awacs_device::read )
{
- return m_regs[offset];
+ return m_regs[offset];
}
//-------------------------------------------------
@@ -131,20 +131,20 @@ READ8_MEMBER( awacs_device::read )
WRITE8_MEMBER( awacs_device::write )
{
- switch (offset)
- {
- case 0x8:
- case 0x9:
- m_regs[offset] = data;
- m_buffer_size = (m_regs[8]<<6) | (m_regs[9]>>2);
+ switch (offset)
+ {
+ case 0x8:
+ case 0x9:
+ m_regs[offset] = data;
+ m_buffer_size = (m_regs[8]<<6) | (m_regs[9]>>2);
// printf("buffer size = %x samples, %x bytes\n", m_buffer_size, m_buffer_size*4);
- m_buffer_size *= 4; // samples * 16 bits * stereo
- break;
+ m_buffer_size *= 4; // samples * 16 bits * stereo
+ break;
- case 0x10:
+ case 0x10:
{
- static const int rates[4] = { 22100, 29400, 44100, 22100 };
- m_stream->set_sample_rate(rates[(data>>1)&3]);
+ static const int rates[4] = { 22100, 29400, 44100, 22100 };
+ m_stream->set_sample_rate(rates[(data>>1)&3]);
// printf("rate %d, enable: %d\n", rates[(data>>1)&3], data & 1);
m_playback_enable = (data & 1) ? true : false;
@@ -154,22 +154,21 @@ WRITE8_MEMBER( awacs_device::write )
m_buffer_num = 0;
}
}
- break;
+ break;
- case 0x18:
- m_regs[offset] &= 0xf0;
- m_regs[offset] |= (data & 0x0f);
- m_regs[offset] &= ~(data & 0xf0);
- return;
- }
+ case 0x18:
+ m_regs[offset] &= 0xf0;
+ m_regs[offset] |= (data & 0x0f);
+ m_regs[offset] &= ~(data & 0xf0);
+ return;
+ }
- m_regs[offset] = data;
+ m_regs[offset] = data;
}
void awacs_device::set_dma_base(address_space &space, int offset0, int offset1)
{
- m_dma_space = &space;
- m_dma_offset_0 = offset0;
- m_dma_offset_1 = offset1;
+ m_dma_space = &space;
+ m_dma_offset_0 = offset0;
+ m_dma_offset_1 = offset1;
}
-