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author Dirk Best <mail@dirk-best.de>2018-03-17 09:08:28 +0100
committer Dirk Best <mail@dirk-best.de>2018-03-17 09:10:18 +0100
commit3ffd6b839facbf554ffd1a8f52853f6cea518178 (patch)
treec3e5ddf7d2e43163f085d66b17f0443b7479aa99
parent61f1bf74772b3cc48c8016d593a3f0d0b90ec7fc (diff)
uPD934G: Preliminary emulation
-rw-r--r--scripts/src/sound.lua12
-rw-r--r--scripts/target/mame/arcade.lua1
-rw-r--r--scripts/target/mame/mess.lua1
-rw-r--r--src/devices/sound/upd934g.cpp161
-rw-r--r--src/devices/sound/upd934g.h70
5 files changed, 245 insertions, 0 deletions
diff --git a/scripts/src/sound.lua b/scripts/src/sound.lua
index 72b21469220..a67c71ed782 100644
--- a/scripts/src/sound.lua
+++ b/scripts/src/sound.lua
@@ -1459,3 +1459,15 @@ if (SOUNDS["LC7535"]~=null) then
MAME_DIR .. "src/devices/sound/lc7535.h",
}
end
+
+---------------------------------------------------
+-- NEC uPD934G
+--@src/devices/sound/upd934g.h,SOUNDS["UPD934G"] = true
+---------------------------------------------------
+
+if (SOUNDS["UPD934G"]~=null) then
+ files {
+ MAME_DIR .. "src/devices/sound/upd934g.cpp",
+ MAME_DIR .. "src/devices/sound/upd934g.h",
+ }
+end
diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index 809ea30252e..6b7fa76d002 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -268,6 +268,7 @@ SOUNDS["TA7630"] = true
SOUNDS["MM5837"] = true
--SOUNDS["DAVE"] = true
SOUNDS["LC7535"] = true
+--SOUNDS["UPD934G"] = true
--------------------------------------------------
-- specify available video cores
diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 375c3bc9221..4f1eb635908 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -270,6 +270,7 @@ SOUNDS["MEA8000"] = true
--SOUNDS["MM5837"] = true
SOUNDS["DAVE"] = true
--SOUNDS["LC7535"] = true
+SOUNDS["UPD934G"] = true
--------------------------------------------------
-- specify available video cores
diff --git a/src/devices/sound/upd934g.cpp b/src/devices/sound/upd934g.cpp
new file mode 100644
index 00000000000..090fb98d725
--- /dev/null
+++ b/src/devices/sound/upd934g.cpp
@@ -0,0 +1,161 @@
+// license: BSD-3-Clause
+// copyright-holders: Dirk Best
+/***************************************************************************
+
+ NEC μPD934G
+
+ Percussion Generator
+
+ TODO:
+ - Play MUTED and ACCENTED
+ - T1 input
+ - 8 channels?
+
+***************************************************************************/
+
+#include "emu.h"
+#include "upd934g.h"
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(UPD934G, upd934g_device, "upd934g", "NEC uPD934G")
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// upd934g_device - constructor
+//-------------------------------------------------
+
+upd934g_device::upd934g_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, UPD934G, tag, owner, clock),
+ device_sound_interface(mconfig, *this),
+ m_data_cb(*this),
+ m_stream(nullptr),
+ m_sample(0),
+ m_ready(false)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void upd934g_device::device_start()
+{
+ // create sound stream
+ m_stream = machine().sound().stream_alloc(*this, 0, 4, 20000);
+
+ // resolve callbacks
+ m_data_cb.resolve_safe(0);
+
+ // register for save states
+ save_pointer(NAME(m_addr), 16);
+
+ for (unsigned i = 0; i < 4; i++)
+ {
+ save_item(NAME(m_channel[i].pos), i);
+ save_item(NAME(m_channel[i].playing), i);
+ save_item(NAME(m_channel[i].volume), i);
+ }
+
+ save_item(NAME(m_sample));
+ save_item(NAME(m_ready));
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void upd934g_device::device_reset()
+{
+ m_ready = false;
+
+ for (unsigned i = 0; i < 4; i++)
+ m_channel[i].playing = -1;
+}
+
+//-------------------------------------------------
+// sound_stream_update - handle update requests for
+// our sound stream
+//-------------------------------------------------
+
+void upd934g_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
+{
+ for (unsigned ch = 0; ch < 4; ch++)
+ {
+ std::fill(&outputs[ch][0], &outputs[ch][samples], 0);
+
+ if (m_ready && m_channel[ch].playing != -1)
+ {
+ uint16_t end = m_addr[m_channel[ch].playing + 1] - 1;
+
+ for (unsigned i = 0; i < samples; i++)
+ {
+ int8_t raw = static_cast<int8_t>(m_data_cb(m_channel[ch].pos));
+ outputs[ch][i] = raw * (m_channel[ch].volume + 1) * 64;
+
+ if (++m_channel[ch].pos >= end)
+ {
+ m_channel[ch].playing = -1;
+ break;
+ }
+ }
+ }
+ }
+}
+
+
+//**************************************************************************
+// INTERFACE
+//**************************************************************************
+
+WRITE8_MEMBER( upd934g_device::write )
+{
+ switch (offset)
+ {
+ case 0:
+ // format of data written here is:
+ // 76------ command
+ // --5432-- sample number
+ // ------10 volume?
+ m_sample = (data >> 2) & 0x0f;
+ switch (data >> 6)
+ {
+ case 0:
+ logerror("CMD STORE ADDRESS sample %x\n", m_sample);
+ break;
+ case 1:
+ logerror("CMD PLAY sample %x (channel %d)\n", m_sample, m_sample >> 1);
+ if (m_sample < 8)
+ {
+ m_channel[m_sample >> 1].pos = m_addr[m_sample];
+ m_channel[m_sample >> 1].playing = m_sample;
+ m_channel[m_sample >> 1].volume = data & 0x03;
+ }
+ break;
+ case 2:
+ logerror("CMD PLAY MUTED sample %x (channel %d)\n", m_sample, m_sample >> 1);
+ break;
+ case 3:
+ logerror("CMD PLAY ACCENTED sample %x (channel %d)\n", m_sample, m_sample >> 1);
+ break;
+ }
+ break;
+ case 1:
+ m_addr[m_sample] = (m_addr[m_sample] & 0xff00) | (data << 0);
+ break;
+ case 2:
+ m_addr[m_sample] = (m_addr[m_sample] & 0x00ff) | (data << 8);
+ logerror(" sample %x address = %04x\n", m_sample, m_addr[m_sample]);
+ break;
+ case 3:
+ m_ready = true;
+ break;
+ }
+}
diff --git a/src/devices/sound/upd934g.h b/src/devices/sound/upd934g.h
new file mode 100644
index 00000000000..02224f2739d
--- /dev/null
+++ b/src/devices/sound/upd934g.h
@@ -0,0 +1,70 @@
+// license: BSD-3-Clause
+// copyright-holders: Dirk Best
+/***************************************************************************
+
+ NEC μPD934G
+
+ Percussion Generator
+
+***************************************************************************/
+
+#ifndef MAME_SOUND_UPD934G_H
+#define MAME_SOUND_UPD934G_H
+
+#pragma once
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_UPD934G_DATA_CB(_devcb) \
+ devcb = &downcast<upd934g_device &>(*device).set_data_callback(DEVCB_##_devcb);
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class upd934g_device : public device_t, public device_sound_interface
+{
+public:
+ static constexpr feature_type imperfect_features() { return feature::SOUND; }
+
+ // construction/destruction
+ upd934g_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ // configuration
+ template <class Object> devcb_base &set_data_callback(Object &&cb) { return m_data_cb.set_callback(std::forward<Object>(cb)); }
+
+ DECLARE_WRITE8_MEMBER(write);
+
+protected:
+ // device-level overrides
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+ virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
+
+private:
+ devcb_read8 m_data_cb;
+ sound_stream *m_stream;
+
+ uint16_t m_addr[16];
+
+ struct
+ {
+ uint16_t pos;
+ int playing;
+ int volume;
+ }
+ m_channel[4];
+
+ int m_sample;
+ bool m_ready;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(UPD934G, upd934g_device)
+
+#endif // MAME_SOUND_UPD934G_H