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sound/l7a1045_l6028_dsp_a.cpp: use 44'100 Hz for sound stream, disable all sounds on device_reset, QA notes

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This commit is contained in:
angelosa 2023-02-26 18:29:41 +01:00
parent dfd60e11de
commit fa174ca7db
2 changed files with 23 additions and 5 deletions
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27
src/devices/sound/l7a1045_l6028_dsp_a.cpp
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@ -1,6 +1,6 @@
// license:LGPL-2.1+
// copyright-holders:David Haywood, Angelo Salese, ElSemi
/***************************************************************************
/**************************************************************************************************
L7A1045 L6028 DSP-A
(QFP120 package)
@ -77,11 +77,15 @@
TODO:
- Sample format needs to be double checked;
- Octave Control/BPM/Pitch, right now XRally Network BGM wants 66150 Hz which is definitely too fast for Terry Bogard speech;
- Key Off;
- Octave Control/BPM/Pitch, xrally Network BGM wants 66150 Hz which is definitely too fast for most fatfurwa samples.
- Key Off, non-loop samples repeats;
- Fix relative sample end positions (non-loop);
- ADSR (registers 2 & 4?);
- How DMA really works?
- fatfurwa: should stop all samples when user insert a credit,
is there a full key off/reset mechanism trigger?
***************************************************************************/
**************************************************************************************************/
#include "emu.h"
#include "l7a1045_l6028_dsp_a.h"
@ -120,7 +124,9 @@ void l7a1045_sound_device::device_start()
assert(!(m_rom.length() & (m_rom.length() - 1)));
// Allocate the stream
m_stream = stream_alloc(0, 2, 66150); //clock() / 384);
// m_stream = stream_alloc(0, 2, 66150); //clock() / 384);
// TODO: confirm frequency
m_stream = stream_alloc(0, 2, 44100);
save_item(STRUCT_MEMBER(m_voice, start));
save_item(STRUCT_MEMBER(m_voice, end));
@ -135,6 +141,10 @@ void l7a1045_sound_device::device_start()
save_item(STRUCT_MEMBER(m_audiodat, dat));
}
void l7a1045_sound_device::device_reset()
{
m_key = 0;
}
//-------------------------------------------------
// sound_stream_update - handle a stream update
@ -289,6 +299,9 @@ void l7a1045_sound_device::sound_data_w(offs_t offset, uint16_t data)
if(m_audiodat[m_audioregister][m_audiochannel].dat[2] & 0x100)
{
// TODO: definitely wrong
// fatfurwa title screen sample 0x45a (0x8000?)
// fatfurwa coin 0x3a0 (0x2000?)
vptr->end = (m_audiodat[m_audioregister][m_audiochannel].dat[0] & 0xffff) << 2;
vptr->end += vptr->start;
vptr->mode = false;
@ -346,6 +359,9 @@ uint16_t l7a1045_sound_device::sound_data_r(offs_t offset)
}
}
// TODO: at least regs [3] and [5], relative position read-back?
// TODO: reg [6]
return 0;
}
@ -372,6 +388,7 @@ void l7a1045_sound_device::sound_status_w(uint16_t data)
}
}
// TODO: stub functions not really used
WRITE_LINE_MEMBER(l7a1045_sound_device::dma_hreq_cb)
{
// m_maincpu->hack_w(1);

1
src/devices/sound/l7a1045_l6028_dsp_a.h
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@ -31,6 +31,7 @@ public:
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;