#include "emu.h" #include "vrender0.h" /*********************************** VRENDER ZERO AUDIO EMULATION ************************************/ /************ MISSING: envelopes reverb interrupts *************/ //Correct table thanks to Evoga //they left a ulaw<->linear conversion tool inside the roms static const unsigned short ULawTo16[]= { 0x8000,0x8400,0x8800,0x8C00,0x9000,0x9400,0x9800,0x9C00, 0xA000,0xA400,0xA800,0xAC00,0xB000,0xB400,0xB800,0xBC00, 0x4000,0x4400,0x4800,0x4C00,0x5000,0x5400,0x5800,0x5C00, 0x6000,0x6400,0x6800,0x6C00,0x7000,0x7400,0x7800,0x7C00, 0xC000,0xC200,0xC400,0xC600,0xC800,0xCA00,0xCC00,0xCE00, 0xD000,0xD200,0xD400,0xD600,0xD800,0xDA00,0xDC00,0xDE00, 0x2000,0x2200,0x2400,0x2600,0x2800,0x2A00,0x2C00,0x2E00, 0x3000,0x3200,0x3400,0x3600,0x3800,0x3A00,0x3C00,0x3E00, 0xE000,0xE100,0xE200,0xE300,0xE400,0xE500,0xE600,0xE700, 0xE800,0xE900,0xEA00,0xEB00,0xEC00,0xED00,0xEE00,0xEF00, 0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700, 0x1800,0x1900,0x1A00,0x1B00,0x1C00,0x1D00,0x1E00,0x1F00, 0xF000,0xF080,0xF100,0xF180,0xF200,0xF280,0xF300,0xF380, 0xF400,0xF480,0xF500,0xF580,0xF600,0xF680,0xF700,0xF780, 0x0800,0x0880,0x0900,0x0980,0x0A00,0x0A80,0x0B00,0x0B80, 0x0C00,0x0C80,0x0D00,0x0D80,0x0E00,0x0E80,0x0F00,0x0F80, 0xF800,0xF840,0xF880,0xF8C0,0xF900,0xF940,0xF980,0xF9C0, 0xFA00,0xFA40,0xFA80,0xFAC0,0xFB00,0xFB40,0xFB80,0xFBC0, 0x0400,0x0440,0x0480,0x04C0,0x0500,0x0540,0x0580,0x05C0, 0x0600,0x0640,0x0680,0x06C0,0x0700,0x0740,0x0780,0x07C0, 0xFC00,0xFC20,0xFC40,0xFC60,0xFC80,0xFCA0,0xFCC0,0xFCE0, 0xFD00,0xFD20,0xFD40,0xFD60,0xFD80,0xFDA0,0xFDC0,0xFDE0, 0x0200,0x0220,0x0240,0x0260,0x0280,0x02A0,0x02C0,0x02E0, 0x0300,0x0320,0x0340,0x0360,0x0380,0x03A0,0x03C0,0x03E0, 0xFE00,0xFE10,0xFE20,0xFE30,0xFE40,0xFE50,0xFE60,0xFE70, 0xFE80,0xFE90,0xFEA0,0xFEB0,0xFEC0,0xFED0,0xFEE0,0xFEF0, 0x0100,0x0110,0x0120,0x0130,0x0140,0x0150,0x0160,0x0170, 0x0180,0x0190,0x01A0,0x01B0,0x01C0,0x01D0,0x01E0,0x01F0, 0x0000,0x0008,0x0010,0x0018,0x0020,0x0028,0x0030,0x0038, 0x0040,0x0048,0x0050,0x0058,0x0060,0x0068,0x0070,0x0078, 0xFF80,0xFF88,0xFF90,0xFF98,0xFFA0,0xFFA8,0xFFB0,0xFFB8, 0xFFC0,0xFFC8,0xFFD0,0xFFD8,0xFFE0,0xFFE8,0xFFF0,0xFFF8, }; #define STATUS m_SOUNDREGS[0x404/4] #define CURSADDR(chan) (m_SOUNDREGS[(0x20/4)*chan+0x00]) #define DSADDR(chan) ((m_SOUNDREGS[(0x20/4)*chan+0x08/4]>>0)&0xffff) #define LOOPBEGIN(chan) (m_SOUNDREGS[(0x20/4)*chan+0x0c/4]&0x3fffff) #define LOOPEND(chan) (m_SOUNDREGS[(0x20/4)*chan+0x10/4]&0x3fffff) #define ENVVOL(chan) (m_SOUNDREGS[(0x20/4)*chan+0x04/4]&0xffffff) /* #define GETSOUNDREG16(Chan,Offs) space.read_word(m_Intf.reg_base+0x20*Chan+Offs) #define GETSOUNDREG32(Chan,Offs) space.read_dword(m_Intf.reg_base+0x20*Chan+Offs) #define CURSADDR(chan) GETSOUNDREG32(chan,0x00) #define DSADDR(chan) GETSOUNDREG16(chan,0x08) #define LOOPBEGIN(chan) (GETSOUNDREG32(chan,0x0c)&0x3fffff) #define LOOPEND(chan) (GETSOUNDREG32(chan,0x10)&0x3fffff) #define ENVVOL(chan) (GETSOUNDREG32(chan,0x04)&0xffffff) */ //************************************************************************** // LIVE DEVICE //************************************************************************** const device_type VRENDER0 = &device_creator; //------------------------------------------------- // vrender0_device - constructor //------------------------------------------------- vrender0_device::vrender0_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, VRENDER0, "VRender0", tag, owner, clock), device_sound_interface(mconfig, *this), m_TexBase(NULL), m_FBBase(NULL), m_stream(NULL) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void vrender0_device::device_start() { const vr0_interface *intf = (const vr0_interface *)static_config(); memcpy(&(m_Intf),intf,sizeof(vr0_interface)); memset(m_SOUNDREGS,0,sizeof(m_SOUNDREGS)); m_stream = stream_alloc(0, 2, 44100); save_item(NAME(m_SOUNDREGS)); } //------------------------------------------------- // sound_stream_update - handle update requests // for our sound stream //------------------------------------------------- void vrender0_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) { VR0_RenderAudio(samples, outputs[0], outputs[1]); } READ32_MEMBER(vrender0_device::vr0_snd_read) { return m_SOUNDREGS[offset]; } WRITE32_MEMBER(vrender0_device::vr0_snd_write) { if(offset==0x404/4) { data&=0xffff; if(data&0x8000) { UINT32 c=data&0x1f; STATUS|=1<>0)&0xff; UINT32 NCH=(m_SOUNDREGS[0x600/4]>>8)&0xff; UINT32 CT1=(m_SOUNDREGS[0x600/4]>>16)&0xff; UINT32 CT2=(m_SOUNDREGS[0x600/4]>>24)&0xff; int div; int s; if(CT1&0x20) SAMPLES=(INT16 *)m_TexBase; else SAMPLES=(INT16 *)m_FBBase; if(CLK) div=((30<<16)|0x8000)/(CLK+1); else div=1<<16; for(s=0;s>10); UINT8 Mode=m_SOUNDREGS[(0x20/4)*i+0x8/4]>>24; signed int LVOL=m_SOUNDREGS[(0x20/4)*i+0xc/4]>>24; signed int RVOL=m_SOUNDREGS[(0x20/4)*i+0x10/4]>>24; INT32 DSADD=(DSADDR(i)*div)>>16; if(!(st&(1<>=8; sample=(signed short)ULawTo16[s&0xff]; } else { if(Mode&0x20) //8bit { UINT16 s=SAMPLES[a]; if((cur&0x200)) s>>=8; sample=(signed short) (((signed char) (s&0xff))<<8); } else //16bit { sample=SAMPLES[a]; } } CURSADDR(i)+=DSADD; if(a>=LOOPEND(i)) { if(Mode&1) //Loop CURSADDR(i)=0;//LOOPBEGIN(i)<<10; else { STATUS&=~(1<<(i&0x1f)); break; } } // UINT32 v=(ENVVOL(i))>>8; // sample=(sample*v)>>16; lsample+=(sample*LVOL)>>8; rsample+=(sample*RVOL)>>8; } if(lsample>32767) lsample=32767; if(lsample<-32768) lsample=-32768; l[s]=lsample; if(rsample>32767) rsample=32767; if(rsample<-32768) rsample=-32768; r[s]=rsample; } }