// license:BSD-3-Clause // copyright-holders:Nicola Salmoria /*************************************************************************** IREM "M72" sound hardware All games have a YM2151 for music, and most of them also samples. Samples are not handled consistently by all the games, some use a high frequency NMI handler to push them through a DAC, others use external hardware. In the following table, the NMI column indicates with a No the games whose NMI handler only consists of RETN. R-Type is an exception, it doesn't have a valid NMI handler at all. Game Year ID string NMI -------------------------------------- ---- ------------ --- R-Type 1987 - (earlier version, no samples) Battle Chopper / Mr. Heli 1987 Rev 2.20 Yes Vigilante 1988 Rev 2.20 Yes Ninja Spirit 1988 Rev 2.20 Yes Image Fight 1988 Rev 2.20 Yes Legend of Hero Tonma 1989 Rev 2.20 Yes X Multiply 1989 Rev 2.20 Yes Dragon Breed 1989 Rev 2.20 Yes Kickle Cubicle 1988 Rev 2.21 Yes Shisensho 1989 Rev 2.21 Yes R-Type II 1989 Rev 2.21 Yes Major Title 1990 Rev 2.21 Yes Air Duel 1990 Rev 3.14 M72 No Daiku no Gensan 1990 Rev 3.14 M81 Yes Daiku no Gensan (M72) 1990 Rev 3.15 M72 No Hammerin' Harry 1990 Rev 3.15 M81 Yes Ken-Go 1991 Rev 3.15 M81 Yes Pound for Pound 1990 Rev 3.15 M83 No Cosmic Cop 1991 Rev 3.15 M81 Yes Gallop - Armed Police Unit 1991 Rev 3.15 M72 No Hasamu 1991 Rev 3.15 M81 Yes Bomber Man 1991 Rev 3.15 M81 Yes Bomber Man World (Japan) 1992 Rev 3.31 M81 Yes Bomber Man World (World) / Atomic Punk 1992 Rev 3.31 M99 No Quiz F-1 1,2finish 1992 Rev 3.33 M81 Yes Risky Challenge 1993 Rev 3.34 M81 Yes Shisensho II 1993 Rev 3.34 M81 Yes ***************************************************************************/ #include "emu.h" #include "m72.h" DEFINE_DEVICE_TYPE(IREM_M72_AUDIO, m72_audio_device, "m72_audio", "Irem M72 Audio") m72_audio_device::m72_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, IREM_M72_AUDIO, tag, owner, clock) , device_sound_interface(mconfig, *this) , m_sample_addr(0) , m_samples(*this, "^samples") , m_samples_size(0) , m_dac(*this, "^dac") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void m72_audio_device::device_start() { m_samples_size = m_samples.bytes(); save_item(NAME(m_sample_addr)); } void m72_audio_device::set_sample_start(int start) { m_sample_addr = start; } WRITE8_MEMBER( m72_audio_device::vigilant_sample_addr_w ) { if (offset == 1) m_sample_addr = (m_sample_addr & 0x00ff) | ((data << 8) & 0xff00); else m_sample_addr = (m_sample_addr & 0xff00) | ((data << 0) & 0x00ff); } WRITE8_MEMBER( m72_audio_device::shisen_sample_addr_w ) { m_sample_addr >>= 2; if (offset == 1) m_sample_addr = (m_sample_addr & 0x00ff) | ((data << 8) & 0xff00); else m_sample_addr = (m_sample_addr & 0xff00) | ((data << 0) & 0x00ff); m_sample_addr <<= 2; } WRITE8_MEMBER( m72_audio_device::rtype2_sample_addr_w ) { m_sample_addr >>= 5; if (offset == 1) m_sample_addr = (m_sample_addr & 0x00ff) | ((data << 8) & 0xff00); else m_sample_addr = (m_sample_addr & 0xff00) | ((data << 0) & 0x00ff); m_sample_addr <<= 5; } WRITE8_MEMBER( m72_audio_device::poundfor_sample_addr_w ) { /* poundfor writes both sample start and sample END - a first for Irem... we don't handle the end written here, 00 marks the sample end as usual. */ if (offset > 1) return; m_sample_addr >>= 4; if (offset == 1) m_sample_addr = (m_sample_addr & 0x00ff) | ((data << 8) & 0xff00); else m_sample_addr = (m_sample_addr & 0xff00) | ((data << 0) & 0x00ff); m_sample_addr <<= 4; } READ8_MEMBER( m72_audio_device::sample_r ) { return m_samples[m_sample_addr]; } WRITE8_MEMBER( m72_audio_device::sample_w ) { m_dac->write(data); m_sample_addr = (m_sample_addr + 1) & (m_samples_size - 1); } //------------------------------------------------- // sound_stream_update - handle a stream update //------------------------------------------------- void m72_audio_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) { }