// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Currah Speech 64 cartridge emulation **********************************************************************/ /* PCB Layout ---------- |===========================| |=| | |=| VLSI | |=| | |=| | |=| ROM | |=| | |=| | |=| SP0256 | |===========================| Notes: All IC's shown. VLSI - General Instruments LA05-164 custom ROM - General Instruments R09864CS-2030 8Kx8 ROM "778R01" SP0256 - General Instruments SP0256A-AL2 Speech Synthesizer LA05-164 Pinout --------------- _____ _____ DOTCLK 1 |* \_/ | 28 +5V CA7 2 | | 27 CD7 CA6 3 | | 26 CA8 CA5 4 | | 25 CA9 CA4 5 | | 24 CA11 CA3 6 | | 23 BA CA2 7 | LA05-164 | 22 CA10 CA1 8 | | 21 SP0256 _ALD CA0 9 | | 20 SP0256 OSC1 10 | | 19 SP0256 SBY _GA+EX 11 | | 18 CA15 I/O1 12 | | 17 CA12 _CR/W 13 | | 16 CA13 GND 14 |_____________| 15 CA14 Notes: _GA+EX - _GAME and _EXROM tied together */ /* BASIC Commands -------------- INIT Initialize the cartridge BYE Disable the cartridge KON 0 Enable keyvoices, low voice KON 1 Enable keyvoices, high voice KOFF Disable keyvoices SAY 0/1 "" Say words */ #include "emu.h" #include "currah_speech.h" #include "speaker.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(C64_CURRAH_SPEECH, c64_currah_speech_cartridge_device, "c64_cspeech", "C64 Currah Speech") //------------------------------------------------- // ROM( c64_currah_speech ) //------------------------------------------------- ROM_START( c64_currah_speech ) ROM_REGION( 0x10000, "sp0256", 0 ) ROM_LOAD( "sp0256a-al2", 0x1000, 0x0800, CRC(b504ac15) SHA1(e60fcb5fa16ff3f3b69d36c7a6e955744d3feafc) ) ROM_END //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *c64_currah_speech_cartridge_device::device_rom_region() const { return ROM_NAME( c64_currah_speech ); } //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void c64_currah_speech_cartridge_device::device_add_mconfig(machine_config &config) { SPEAKER(config, "mono").front_center(); SP0256(config, m_nsp, XTAL::u(4000000)); // ??? m_nsp->add_route(ALL_OUTPUTS, "mono", 1.00); } //************************************************************************** // INLINE HELPERS //************************************************************************** //------------------------------------------------- // set_osc1 - //------------------------------------------------- void c64_currah_speech_cartridge_device::set_osc1(int voice, int intonation) { int dotclock = m_slot->dotclock(); // TODO intonation and correct dividers m_nsp->set_clock(dotclock / (2 << voice)); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_currah_speech_cartridge_device - constructor //------------------------------------------------- c64_currah_speech_cartridge_device::c64_currah_speech_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, C64_CURRAH_SPEECH, tag, owner, clock), device_c64_expansion_card_interface(mconfig, *this), m_nsp(*this, "sp0256") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_currah_speech_cartridge_device::device_start() { } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void c64_currah_speech_cartridge_device::device_reset() { m_game = 1; m_exrom = 1; } //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- uint8_t c64_currah_speech_cartridge_device::c64_cd_r(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2) { if (!romh) { data = m_romh[offset & 0x1fff]; } else if (!io1) { /* bit description 0 1 2 3 4 5 6 7 SBY */ data = m_nsp->sby_r() << 7; } if (!machine().side_effects_disabled() && (offset == 0xa7f0)) { m_game = !m_game; m_exrom = !m_exrom; } return data; } //------------------------------------------------- // c64_cd_w - cartridge data write //------------------------------------------------- void c64_currah_speech_cartridge_device::c64_cd_w(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2) { if (!io1) { /* bit description 0 A1 1 A2 2 A3 3 A4 4 A5 5 A6 6 7 intonation */ int voice = BIT(offset, 0); int intonation = BIT(data, 7); set_osc1(voice, intonation); m_nsp->ald_w(data & 0x3f); } }