diff options
Diffstat (limited to 'src/mame/audio/taito_en.cpp')
-rw-r--r-- | src/mame/audio/taito_en.cpp | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/src/mame/audio/taito_en.cpp b/src/mame/audio/taito_en.cpp new file mode 100644 index 00000000000..7fc4a193a17 --- /dev/null +++ b/src/mame/audio/taito_en.cpp @@ -0,0 +1,317 @@ +// license:BSD-3-Clause +// copyright-holders:Bryan McPhail, Aaron Giles, R. Belmont, hap, Philip Bennett +/*************************************************************************** + + Taito Ensoniq ES5505-based sound hardware + + TODO: + + * Implement ES5510 ESP + * Where does the MB8421 go? Taito F3(and Super Chase) have 2 of them on + the sound area, Taito JC has one. + +****************************************************************************/ + +#include "emu.h" +#include "taito_en.h" + + +const device_type TAITO_EN = &device_creator<taito_en_device>; + +taito_en_device::taito_en_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, TAITO_EN, "Taito Ensoniq Sound System", tag, owner, clock, "taito_en", __FILE__), + m_audiocpu(*this, ":audiocpu"), + m_ensoniq(*this, ":ensoniq"), + m_duart68681(*this, ":duart68681"), + m_mb87078(*this, ":mb87078"), + m_snd_shared_ram(*this, ":snd_shared"), + m_es5510_dol_latch(0), + m_es5510_dil_latch(0), + m_es5510_dadr_latch(0), + m_es5510_gpr_latch(0), + m_es5510_ram_sel(0) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void taito_en_device::device_start() +{ + save_item(NAME(m_es5510_dsp_ram)); + save_item(NAME(m_es5510_gpr)); + save_item(NAME(m_es5510_dram)); + save_item(NAME(m_es5510_dol_latch)); + save_item(NAME(m_es5510_dil_latch)); + save_item(NAME(m_es5510_dadr_latch)); + save_item(NAME(m_es5510_gpr_latch)); + save_item(NAME(m_es5510_ram_sel)); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void taito_en_device::device_reset() +{ + /* Sound cpu program loads to 0xc00000 so we use a bank */ + UINT16 *ROM = (UINT16 *)machine().root_device().memregion("audiocpu")->base(); + UINT16 *sound_ram = (UINT16 *)machine().root_device().memshare("share1")->ptr(); + machine().root_device().membank("bank1")->set_base(&ROM[0x80000]); + machine().root_device().membank("bank2")->set_base(&ROM[0x90000]); + machine().root_device().membank("bank3")->set_base(&ROM[0xa0000]); + + sound_ram[0] = ROM[0x80000]; /* Stack and Reset vectors */ + sound_ram[1] = ROM[0x80001]; + sound_ram[2] = ROM[0x80002]; + sound_ram[3] = ROM[0x80003]; + + /* reset CPU to catch any banking of startup vectors */ + m_audiocpu->reset(); + m_audiocpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE); +} + + +/************************************* + * + * Handlers + * + *************************************/ + +READ8_MEMBER( taito_en_device::en_68000_share_r ) +{ + switch (offset & 3) + { + case 0: return (m_snd_shared_ram[offset/4]&0xff000000)>>24; + case 1: return (m_snd_shared_ram[offset/4]&0x00ff0000)>>16; + case 2: return (m_snd_shared_ram[offset/4]&0x0000ff00)>>8; + case 3: return (m_snd_shared_ram[offset/4]&0x000000ff)>>0; + } + + return 0; +} + +WRITE8_MEMBER( taito_en_device::en_68000_share_w ) +{ + switch (offset & 3) + { + case 0: m_snd_shared_ram[offset/4] = (m_snd_shared_ram[offset/4]&0x00ffffff)|(data<<24); + case 1: m_snd_shared_ram[offset/4] = (m_snd_shared_ram[offset/4]&0xff00ffff)|(data<<16); + case 2: m_snd_shared_ram[offset/4] = (m_snd_shared_ram[offset/4]&0xffff00ff)|(data<<8); + case 3: m_snd_shared_ram[offset/4] = (m_snd_shared_ram[offset/4]&0xffffff00)|(data<<0); + } +} + +WRITE16_MEMBER( taito_en_device::en_es5505_bank_w ) +{ + UINT32 max_banks_this_game = (space.machine().root_device().memregion("ensoniq.0")->bytes()/0x200000)-1; + + /* mask out unused bits */ + data &= max_banks_this_game; + m_ensoniq->voice_bank_w(offset,data<<20); +} + +WRITE8_MEMBER( taito_en_device::en_volume_w ) +{ + m_mb87078->data_w(data, offset ^ 1); +} + + +/************************************* + * + * ES5510 + * + *************************************/ + +//todo: hook up cpu/es5510 + +READ16_MEMBER( taito_en_device::es5510_dsp_r ) +{ + switch (offset) + { + case 0x09: return (m_es5510_dil_latch >> 16) & 0xff; + case 0x0a: return (m_es5510_dil_latch >> 8) & 0xff; + case 0x0b: return (m_es5510_dil_latch >> 0) & 0xff; // TODO: docs says that this always returns 0 + default: break; + } + + if (offset==0x12) return 0; + +// if (offset>4) + if (offset==0x16) return 0x27; + + return m_es5510_dsp_ram[offset]; +} + +WRITE16_MEMBER( taito_en_device::es5510_dsp_w ) +{ + UINT8 *snd_mem = (UINT8 *)space.machine().root_device().memregion("ensoniq.0")->base(); + +// if (offset>4 && offset!=0x80 && offset!=0xa0 && offset!=0xc0 && offset!=0xe0) +// logerror("%06x: DSP write offset %04x %04x\n",space.device().safe_pc(),offset,data); + + COMBINE_DATA(&m_es5510_dsp_ram[offset]); + + switch (offset) { + case 0x00: m_es5510_gpr_latch=(m_es5510_gpr_latch&0x00ffff)|((data&0xff)<<16); break; + case 0x01: m_es5510_gpr_latch=(m_es5510_gpr_latch&0xff00ff)|((data&0xff)<< 8); break; + case 0x02: m_es5510_gpr_latch=(m_es5510_gpr_latch&0xffff00)|((data&0xff)<< 0); break; + + /* 0x03 to 0x08 INSTR Register */ + /* 0x09 to 0x0b DIL Register (r/o) */ + + case 0x0c: m_es5510_dol_latch=(m_es5510_dol_latch&0x00ffff)|((data&0xff)<<16); break; + case 0x0d: m_es5510_dol_latch=(m_es5510_dol_latch&0xff00ff)|((data&0xff)<< 8); break; + case 0x0e: m_es5510_dol_latch=(m_es5510_dol_latch&0xffff00)|((data&0xff)<< 0); break; //TODO: docs says that this always returns 0xff + + case 0x0f: + m_es5510_dadr_latch=(m_es5510_dadr_latch&0x00ffff)|((data&0xff)<<16); + if(m_es5510_ram_sel) + m_es5510_dil_latch = m_es5510_dram[m_es5510_dadr_latch]; + else + m_es5510_dram[m_es5510_dadr_latch] = m_es5510_dol_latch; + break; + + case 0x10: m_es5510_dadr_latch=(m_es5510_dadr_latch&0xff00ff)|((data&0xff)<< 8); break; + case 0x11: m_es5510_dadr_latch=(m_es5510_dadr_latch&0xffff00)|((data&0xff)<< 0); break; + + /* 0x12 Host Control */ + + case 0x14: m_es5510_ram_sel = data & 0x80; /* bit 6 is i/o select, everything else is undefined */break; + + /* 0x16 Program Counter (test purpose, r/o?) */ + /* 0x17 Internal Refresh counter (test purpose) */ + /* 0x18 Host Serial Control */ + /* 0x1f Halt enable (w) / Frame Counter (r) */ + + case 0x80: /* Read select - GPR + INSTR */ + // logerror("ES5510: Read GPR/INSTR %06x (%06x)\n",data,m_es5510_gpr[data]); + + /* Check if a GPR is selected */ + if (data<0xc0) { + //es_tmp=0; + m_es5510_gpr_latch=m_es5510_gpr[data]; + }// else es_tmp=1; + break; + + case 0xa0: /* Write select - GPR */ + // logerror("ES5510: Write GPR %06x %06x (0x%04x:=0x%06x\n",data,m_es5510_gpr_latch,data,snd_mem[m_es5510_gpr_latch>>8]); + if (data<0xc0) + m_es5510_gpr[data]=snd_mem[m_es5510_gpr_latch>>8]; + break; + + case 0xc0: /* Write select - INSTR */ + // logerror("ES5510: Write INSTR %06x %06x\n",data,m_es5510_gpr_latch); + break; + + case 0xe0: /* Write select - GPR + INSTR */ + // logerror("ES5510: Write GPR/INSTR %06x %06x\n",data,m_es5510_gpr_latch); + break; + } +} + + +/************************************* + * + * 68000 memory map + * + *************************************/ + +static ADDRESS_MAP_START( en_sound_map, AS_PROGRAM, 16, driver_device ) + AM_RANGE(0x000000, 0x00ffff) AM_RAM AM_MIRROR(0x30000) AM_SHARE("share1") + AM_RANGE(0x140000, 0x140fff) AM_DEVREADWRITE8("taito_en", taito_en_device, en_68000_share_r, en_68000_share_w, 0xff00) + AM_RANGE(0x200000, 0x20001f) AM_DEVREADWRITE("ensoniq", es5505_device, read, write) + AM_RANGE(0x260000, 0x2601ff) AM_DEVREADWRITE("taito_en", taito_en_device, es5510_dsp_r, es5510_dsp_w) //todo: hook up cpu/es5510 + AM_RANGE(0x280000, 0x28001f) AM_DEVREADWRITE8("duart68681", mc68681_device, read, write, 0x00ff) + AM_RANGE(0x300000, 0x30003f) AM_DEVWRITE("taito_en", taito_en_device, en_es5505_bank_w) + AM_RANGE(0x340000, 0x340003) AM_DEVWRITE8("taito_en", taito_en_device, en_volume_w, 0xff00) + AM_RANGE(0xc00000, 0xc1ffff) AM_ROMBANK("bank1") + AM_RANGE(0xc20000, 0xc3ffff) AM_ROMBANK("bank2") + AM_RANGE(0xc40000, 0xc7ffff) AM_ROMBANK("bank3") + AM_RANGE(0xff0000, 0xffffff) AM_RAM AM_SHARE("share1") // mirror +ADDRESS_MAP_END + + +/************************************* + * + * MB87078 callback + * + *************************************/ + +WRITE8_MEMBER(taito_en_device::mb87078_gain_changed) +{ + if (offset > 1) + { + m_ensoniq->set_output_gain(offset & 1, data / 100.0); + } +} + + +/************************************* + * + * M68681 callback + * + *************************************/ + +WRITE_LINE_MEMBER(taito_en_device::duart_irq_handler) +{ + if (state == ASSERT_LINE) + { + m_audiocpu->set_input_line_vector(M68K_IRQ_6, m_duart68681->get_irq_vector()); + m_audiocpu->set_input_line(M68K_IRQ_6, ASSERT_LINE); + } + else + { + m_audiocpu->set_input_line(M68K_IRQ_6, CLEAR_LINE); + } +} + + +/************************************* + * + * Device interfaces + * + *************************************/ + +/* + 68681 I/O pin assignments + (according to Gun Buster schematics): + + IP0: 5V OP0-OP5: N/C + IP1: 5V OP6: ESPHALT + IP2: 1MHz OP7: N/C + IP3: 0.5MHz + IP4: 0.5MHz + IP5: 1MHz +*/ + +/************************************* + * + * Machine driver + * + *************************************/ + +MACHINE_CONFIG_FRAGMENT( taito_en_sound ) + + /* basic machine hardware */ + MCFG_TAITO_EN_ADD("taito_en") + MCFG_CPU_ADD("audiocpu", M68000, XTAL_30_4761MHz / 2) + MCFG_CPU_PROGRAM_MAP(en_sound_map) + + MCFG_MC68681_ADD("duart68681", XTAL_16MHz / 4) + MCFG_MC68681_SET_EXTERNAL_CLOCKS(XTAL_16MHz/2/8, XTAL_16MHz/2/16, XTAL_16MHz/2/16, XTAL_16MHz/2/8) + MCFG_MC68681_IRQ_CALLBACK(DEVWRITELINE("taito_en", taito_en_device, duart_irq_handler)) + + MCFG_DEVICE_ADD("mb87078", MB87078, 0) + MCFG_MB87078_GAIN_CHANGED_CB(DEVWRITE8("taito_en", taito_en_device, mb87078_gain_changed)) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker") + MCFG_SOUND_ADD("ensoniq", ES5505, XTAL_30_4761MHz / 2) + MCFG_ES5505_REGION0("ensoniq.0") + MCFG_ES5505_REGION1("ensoniq.0") + MCFG_ES5506_CHANNELS(1) + MCFG_SOUND_ROUTE(0, "lspeaker", 0.08) + MCFG_SOUND_ROUTE(1, "rspeaker", 0.08) +MACHINE_CONFIG_END |