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Diffstat (limited to 'src/devices/sound/ym3812.cpp')
-rw-r--r--src/devices/sound/ym3812.cpp151
1 files changed, 0 insertions, 151 deletions
diff --git a/src/devices/sound/ym3812.cpp b/src/devices/sound/ym3812.cpp
deleted file mode 100644
index 07da3b73b3b..00000000000
--- a/src/devices/sound/ym3812.cpp
+++ /dev/null
@@ -1,151 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Aaron Giles
-
-#include "emu.h"
-#include "ym3812.h"
-
-
-DEFINE_DEVICE_TYPE(YM3812, ym3812_device, "ym3812", "YM3812 OPL2")
-
-
-//*********************************************************
-// YM3812 DEVICE
-//*********************************************************
-
-//-------------------------------------------------
-// ym3812_device - constructor
-//-------------------------------------------------
-
-ym3812_device::ym3812_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, device_type type) :
- device_t(mconfig, type, tag, owner, clock),
- device_sound_interface(mconfig, *this),
- m_address(0),
- m_stream(nullptr),
- m_fm(*this)
-{
-}
-
-
-//-------------------------------------------------
-// status_r - return the status port (A0=0)
-//-------------------------------------------------
-
-u8 ym3812_device::status_r()
-{
- return m_fm.status() | 0x06;
-}
-
-
-//-------------------------------------------------
-// read - handle a read from the device
-//-------------------------------------------------
-
-u8 ym3812_device::read(offs_t offset)
-{
- // datasheet says status only reads when A0=0
- if ((offset & 1) == 0)
- return status_r();
- logerror("Unexpected read from YM3812 offset %d\n", offset & 1);
- return 0xff;
-}
-
-
-//-------------------------------------------------
-// address_w - write to the address port (A0=0)
-//-------------------------------------------------
-
-void ym3812_device::address_w(u8 value)
-{
- m_address = value;
-}
-
-
-//-------------------------------------------------
-// data_w - write to the data port (A0=1)
-//-------------------------------------------------
-
-void ym3812_device::data_w(u8 value)
-{
- // force an update
- m_stream->update();
-
- // write to FM
- m_fm.write(m_address, value);
-}
-
-
-//-------------------------------------------------
-// write - handle a write to the register
-// interface
-//-------------------------------------------------
-
-void ym3812_device::write(offs_t offset, u8 value)
-{
- // A0 selects between address/data
- if ((offset & 1) == 0)
- address_w(value);
- else
- data_w(value);
-}
-
-
-//-------------------------------------------------
-// device_start - start of emulation
-//-------------------------------------------------
-
-void ym3812_device::device_start()
-{
- // create our stream
- m_stream = stream_alloc(0, fm_engine::OUTPUTS, m_fm.sample_rate(clock()));
-
- // save our data
- save_item(YMFM_NAME(m_address));
-
- // save the engines
- m_fm.save(*this);
-}
-
-
-//-------------------------------------------------
-// device_reset - start of emulation
-//-------------------------------------------------
-
-void ym3812_device::device_reset()
-{
- // reset the engines
- m_fm.reset();
-}
-
-
-//-------------------------------------------------
-// device_clock_changed - update if clock changes
-//-------------------------------------------------
-
-void ym3812_device::device_clock_changed()
-{
- m_stream->set_sample_rate(m_fm.sample_rate(clock()));
-}
-
-
-//-------------------------------------------------
-// sound_stream_update - update the sound stream
-//-------------------------------------------------
-
-void ym3812_device::sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs)
-{
- // iterate over all target samples
- for (int sampindex = 0; sampindex < outputs[0].samples(); sampindex++)
- {
- // clock the system
- m_fm.clock(fm_engine::ALL_CHANNELS);
-
- // update the FM content; clipping is unknown
- s32 sums[fm_engine::OUTPUTS] = { 0 };
- m_fm.output(sums, 1, 32767, fm_engine::ALL_CHANNELS);
-
- // convert to 10.3 floating point value for the DAC and back
- // YM3812 is mono
- for (int index = 0; index < fm_engine::OUTPUTS; index++)
- outputs[index].put_int(sampindex, ymfm_roundtrip_fp(sums[index]), 32768);
- }
-}