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Diffstat (limited to 'src/emu/bus/odyssey2/voice.c')
-rw-r--r-- | src/emu/bus/odyssey2/voice.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/emu/bus/odyssey2/voice.c b/src/emu/bus/odyssey2/voice.c new file mode 100644 index 00000000000..7da5d308695 --- /dev/null +++ b/src/emu/bus/odyssey2/voice.c @@ -0,0 +1,101 @@ +/*********************************************************************************************************** + + + Magnavox The Voice emulation + + TODO: + - load speech ROM from softlist + - move external speech rom for S.I.D. the Spellbinder into the softlist entry + + ***********************************************************************************************************/ + + +#include "emu.h" +#include "voice.h" + + +//------------------------------------------------- +// o2_voice_device - constructor +//------------------------------------------------- + +const device_type O2_ROM_VOICE = &device_creator<o2_voice_device>; + + +o2_voice_device::o2_voice_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : o2_rom_device(mconfig, O2_ROM_VOICE, "Odyssey 2 The Voice Passthrough Cart", tag, owner, clock, "o2_voice", __FILE__), + m_speech(*this, "sp0256_speech"), + m_subslot(*this, "subslot"), + m_lrq_state(0) +{ +} + + +void o2_voice_device::device_start() +{ + save_item(NAME(m_lrq_state)); +} + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( sub_slot ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( o2voice ) + MCFG_SPEAKER_STANDARD_MONO("mono") + + MCFG_SOUND_ADD("sp0256_speech", SP0256, 3120000) + MCFG_SP0256_DATA_REQUEST_CB(WRITELINE(o2_voice_device, lrq_callback)) + // The Voice uses a speaker with its own volume control so the relative volumes to use are subjective, these sound good + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) + + MCFG_O2_CARTRIDGE_ADD("subslot", o2_cart, NULL) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor o2_voice_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( o2voice ); +} + + +ROM_START( o2voice ) + ROM_REGION( 0x10000, "sp0256_speech", 0 ) + // SP0256B-019 Speech chip w/2KiB mask rom + ROM_LOAD( "sp0256b-019.bin", 0x1000, 0x0800, CRC(4bb43724) SHA1(49f5326ad45392dc96c89d1d4e089a20bd21e609) ) + + /* A note about "The Voice": Two versions of "The Voice" exist: + * An earlier version with eight 2KiB speech roms, spr016-??? through spr016-??? on a small daughterboard + <note to self: fill in numbers later> + * A later version with one 16KiB speech rom, spr128-003, mounted directly on the mainboard + The rom contents of these two versions are EXACTLY the same. + Both versions have an sp0256b-019 speech chip, which has 2KiB of its own internal speech data + Thanks to kevtris for this info. - LN + */ + + // External 16KiB speech ROM (spr128-003) from "The Voice" + ROM_LOAD( "spr128-003.bin", 0x4000, 0x4000, CRC(509367b5) SHA1(0f31f46bc02e9272885779a6dd7102c78b18895b) ) + // Additional External 16KiB speech ROM (spr128-004) from S.I.D. the Spellbinder + ROM_LOAD( "spr128-004.bin", 0x8000, 0x4000, CRC(e79dfb75) SHA1(37f33d79ffd1739d7c2f226b010a1eac28d74ca0) ) +ROM_END + +const rom_entry *o2_voice_device::device_rom_region() const +{ + return ROM_NAME( o2voice ); +} + +WRITE_LINE_MEMBER(o2_voice_device::lrq_callback) +{ + m_lrq_state = state; +} + +WRITE8_MEMBER(o2_voice_device::io_write) +{ + if (data & 0x20) + m_speech->ald_w(space, 0, offset & 0x7f); + else + m_speech->reset(); +} |