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diff --git a/src/devices/bus/nes/pt554.c b/src/devices/bus/nes/pt554.c
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+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/***********************************************************************************************************
+
+
+ NES/Famicom cartridge emulation for Bandai PT-554 PCBs
+
+
+ Here we emulate the following Bandai PT-554 PCB (a CNROM PCB + LPC / PARCOR speech synthesis chip)
+
+ TODO:
+ - emulate the mat controller
+
+ ***********************************************************************************************************/
+
+
+#include "emu.h"
+#include "pt554.h"
+
+
+#ifdef NES_PCB_DEBUG
+#define VERBOSE 1
+#else
+#define VERBOSE 0
+#endif
+
+#define LOG_MMC(x) do { if (VERBOSE) logerror x; } while (0)
+
+
+//-------------------------------------------------
+// constructor
+//-------------------------------------------------
+
+const device_type NES_BANDAI_PT554 = &device_creator<nes_bandai_pt554_device>;
+
+
+nes_bandai_pt554_device::nes_bandai_pt554_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : nes_cnrom_device(mconfig, NES_BANDAI_PT554, "NES Cart Bandai PT-554 PCB", tag, owner, clock, "nes_bandai_pt554", __FILE__),
+ m_samples(*this, "samples")
+{
+}
+
+
+
+/*-------------------------------------------------
+ mapper specific handlers
+ -------------------------------------------------*/
+
+/*-------------------------------------------------
+
+ Bandai PT-554 board emulation
+
+ This is used by Aerobics Studio. It is basically a CNROM board
+ with an Mitsubishi M50805 LPC / PARCOR speech synthesis chip
+ with internal tables stored in ROM which have not yet been dumped.
+
+ iNES: mapper 3?
+
+ -------------------------------------------------*/
+
+WRITE8_MEMBER(nes_bandai_pt554_device::write_m)
+{
+ LOG_MMC(("Bandai PT-554 Sound write, data: %02x\n", data));
+
+ if (!BIT(data, 6))
+ m_samples->start(data & 0x07, data & 0x07);
+ else
+ m_samples->stop(data & 0x07);
+}
+
+static const char *const pt554_sample_names[] =
+{
+ "*ftaerobi",
+ "00",
+ "01",
+ "02",
+ "03",
+ "04",
+ "05",
+ "06",
+ "07",
+ 0
+};
+
+//-------------------------------------------------
+// MACHINE_DRIVER
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( pt554 )
+
+ // additional sound hardware
+ MCFG_SPEAKER_STANDARD_MONO("addon")
+
+ MCFG_SOUND_ADD("samples", SAMPLES, 0)
+ MCFG_SAMPLES_CHANNELS(8)
+ MCFG_SAMPLES_NAMES(pt554_sample_names)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "addon", 0.50)
+MACHINE_CONFIG_END
+
+//-------------------------------------------------
+// machine_config_additions
+//-------------------------------------------------
+
+machine_config_constructor nes_bandai_pt554_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( pt554 );
+}