diff options
Diffstat (limited to 'src/devices/sound/2203intf.cpp')
-rw-r--r-- | src/devices/sound/2203intf.cpp | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/src/devices/sound/2203intf.cpp b/src/devices/sound/2203intf.cpp deleted file mode 100644 index 9b49479af97..00000000000 --- a/src/devices/sound/2203intf.cpp +++ /dev/null @@ -1,173 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Ernesto Corvi -#include "emu.h" -#include "2203intf.h" -#include "fm.h" - -const ssg_callbacks ym2203_device::psgintf = -{ - &ym2203_device::psg_set_clock, - &ym2203_device::psg_write, - &ym2203_device::psg_read, - &ym2203_device::psg_reset -}; - -/* IRQ Handler */ -void ym2203_device::irq_handler(int irq) -{ - m_timer[2]->adjust(attotime::zero, irq); -} - -/* Timer overflow callback from timer.c */ -void ym2203_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) -{ - switch(id) - { - case TIMER_A: - ym2203_timer_over(m_chip,0); - break; - - case TIMER_B: - ym2203_timer_over(m_chip,1); - break; - - case TIMER_IRQ_SYNC: - if (!m_irq_handler.isnull()) - m_irq_handler(param); - break; - } -} - -void ym2203_device::timer_handler(int c, int count, int clock) -{ - if( count == 0 || clock == 0) - { /* Reset FM Timer */ - m_timer[c]->enable(false); - } - else - { /* Start FM Timer */ - attotime period = attotime::from_hz(clock) * count; - - if (!m_timer[c]->enable(true)) - m_timer[c]->adjust(period); - } -} - -//------------------------------------------------- -// sound_stream_update - handle a stream update -//------------------------------------------------- - - -void ym2203_device::stream_generate(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) -{ - ym2203_update_one(m_chip, outputs[0], samples); -} - - -void ym2203_device::device_post_load() -{ - ym2203_postload(m_chip); -} - - -//------------------------------------------------- -// device_start - device-specific startup -//------------------------------------------------- - -void ym2203_device::device_start() -{ - ay8910_device::device_start(); - - m_irq_handler.resolve(); - - /* Timer Handler set */ - m_timer[0] = timer_alloc(TIMER_A); - m_timer[1] = timer_alloc(TIMER_B); - m_timer[2] = timer_alloc(TIMER_IRQ_SYNC); - - /* stream system initialize */ - calculate_rates(); - - /* Initialize FM emurator */ - int rate = clock()/72; /* ??? */ - m_chip = ym2203_init(this,clock(),rate,&ym2203_device::static_timer_handler,&ym2203_device::static_irq_handler,&psgintf); - if (!m_chip) - throw emu_fatalerror("ym2203_device(%s): Error creating YM2203 chip", tag()); -} - -void ym2203_device::device_clock_changed() -{ - calculate_rates(); - ym2203_clock_changed(m_chip, clock(), clock() / 72); -} - -void ym2203_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, stream_update_delegate(&ym2203_device::stream_generate,this)); -} - -//------------------------------------------------- -// device_stop - device-specific stop -//------------------------------------------------- - -void ym2203_device::device_stop() -{ - if (m_chip) - ym2203_shutdown(m_chip); -} - -//------------------------------------------------- -// device_reset - device-specific reset -//------------------------------------------------- - -void ym2203_device::device_reset() -{ - ym2203_reset_chip(m_chip); -} - - -u8 ym2203_device::read(offs_t offset) -{ - return ym2203_read(m_chip, offset & 1); -} - -void ym2203_device::write(offs_t offset, u8 data) -{ - ym2203_write(m_chip, offset & 1, data); -} - -u8 ym2203_device::status_port_r() -{ - return read(0); -} - -u8 ym2203_device::read_port_r() -{ - return read(1); -} - -void ym2203_device::control_port_w(u8 data) -{ - write(0, data); -} - -void ym2203_device::write_port_w(u8 data) -{ - write(1, data); -} - -DEFINE_DEVICE_TYPE(YM2203, ym2203_device, "ym2203", "YM2203 OPN") - -ym2203_device::ym2203_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : ay8910_device(mconfig, YM2203, tag, owner, clock, PSG_TYPE_YM, 3, 2) - , m_stream(nullptr) - , m_timer{ nullptr, nullptr } - , m_chip(nullptr) - , m_irq_handler(*this) -{ -} |