summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/sound/3812intf.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/sound/3812intf.cpp')
-rw-r--r--src/devices/sound/3812intf.cpp161
1 files changed, 0 insertions, 161 deletions
diff --git a/src/devices/sound/3812intf.cpp b/src/devices/sound/3812intf.cpp
deleted file mode 100644
index c5f5aeabb05..00000000000
--- a/src/devices/sound/3812intf.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Ernesto Corvi
-/******************************************************************************
-* FILE
-* Yamaha 3812 emulator interface - MAME VERSION
-*
-* CREATED BY
-* Ernesto Corvi
-*
-* UPDATE LOG
-* JB 28-04-2002 Fixed simultaneous usage of all three different chip types.
-* Used real sample rate when resample filter is active.
-* AAT 12-28-2001 Protected Y8950 from accessing unmapped port and keyboard handlers.
-* CHS 1999-01-09 Fixes new ym3812 emulation interface.
-* CHS 1998-10-23 Mame streaming sound chip update
-* EC 1998 Created Interface
-*
-* NOTES
-*
-******************************************************************************/
-#include "emu.h"
-#include "3812intf.h"
-#include "sound/fmopl.h"
-
-
-void ym3812_device::irq_handler(int irq)
-{
- m_timer[2]->adjust(attotime::zero, irq);
-}
-
-/* Timer overflow callback from timer.c */
-void ym3812_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
-{
- switch(id)
- {
- case TIMER_A:
- ym3812_timer_over(m_chip,0);
- break;
-
- case TIMER_B:
- ym3812_timer_over(m_chip,1);
- break;
-
- case TIMER_IRQ_SYNC:
- if (!m_irq_handler.isnull())
- m_irq_handler(param);
- break;
- }
-}
-
-void ym3812_device::timer_handler(int c, const attotime &period)
-{
- if( period == attotime::zero )
- { /* Reset FM Timer */
- m_timer[c]->enable(false);
- }
- else
- { /* Start FM Timer */
- m_timer[c]->adjust(period);
- }
-}
-
-
-//-------------------------------------------------
-// sound_stream_update - handle a stream update
-//-------------------------------------------------
-
-void ym3812_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
-{
- ym3812_update_one(m_chip, outputs[0], samples);
-}
-
-//-------------------------------------------------
-// device_start - device-specific startup
-//-------------------------------------------------
-
-void ym3812_device::device_start()
-{
- int rate = clock() / 72;
-
- m_irq_handler.resolve();
-
- /* stream system initialize */
- m_chip = ym3812_init(this, clock(), rate);
- if (!m_chip)
- throw emu_fatalerror("ym3812_device(%s): Error creating YM3812 chip", tag());
-
- calculate_rates();
-
- /* YM3812 setup */
- ym3812_set_timer_handler (m_chip, ym3812_device::static_timer_handler, this);
- ym3812_set_irq_handler (m_chip, ym3812_device::static_irq_handler, this);
- ym3812_set_update_handler(m_chip, ym3812_device::static_update_request, this);
-
- m_timer[0] = timer_alloc(TIMER_A);
- m_timer[1] = timer_alloc(TIMER_B);
- m_timer[2] = timer_alloc(TIMER_IRQ_SYNC);
-}
-
-void ym3812_device::device_clock_changed()
-{
- calculate_rates();
- ym3812_clock_changed(m_chip, clock(), clock() / 72);
-}
-
-void ym3812_device::calculate_rates()
-{
- int rate = clock() / 72;
-
- if (m_stream != nullptr)
- m_stream->set_sample_rate(rate);
- else
- m_stream = machine().sound().stream_alloc(*this, 0, 1, rate);
-}
-
-//-------------------------------------------------
-// device_stop - device-specific stop
-//-------------------------------------------------
-
-void ym3812_device::device_stop()
-{
- ym3812_shutdown(m_chip);
-}
-
-//-------------------------------------------------
-// device_reset - device-specific reset
-//-------------------------------------------------
-
-void ym3812_device::device_reset()
-{
- ym3812_reset_chip(m_chip);
-}
-
-
-u8 ym3812_device::read(offs_t offset)
-{
- return ym3812_read(m_chip, offset & 1);
-}
-
-void ym3812_device::write(offs_t offset, u8 data)
-{
- ym3812_write(m_chip, offset & 1, data);
-}
-
-u8 ym3812_device::status_port_r() { return read(0); }
-u8 ym3812_device::read_port_r() { return read(1); }
-void ym3812_device::control_port_w(u8 data) { write(0, data); }
-void ym3812_device::write_port_w(u8 data) { write(1, data); }
-
-
-DEFINE_DEVICE_TYPE(YM3812, ym3812_device, "ym3812", "YM3812 OPL2")
-
-ym3812_device::ym3812_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
- : device_t(mconfig, YM3812, tag, owner, clock)
- , device_sound_interface(mconfig, *this)
- , m_stream(nullptr)
- , m_timer{ nullptr, nullptr }
- , m_chip(nullptr)
- , m_irq_handler(*this)
-{
-}