''***************************** ''* Hydra Sound System v1.2 * ''* (C)2007 Andrew Arsenault * ''***************************** ''http://www.andrewarsenault.com/hss/ ''e-mail: ym2413a@yahoo.com '' '' Cogs used: 2 '' HUB-RAM: ~2.7k '' Please visit the website for the latest version, documentation, examples and media files. '' Thank you! --Ym2413a VAR 'Sound Engine Stack long hsnd_stack[18] long cog1, cog2 'WavSynth Parameters long snd_regs[48] 'Regs for Sound Hardware (8x6)+5dpcm long dpcm_regs[5] 'DPCM Command Variables word dpcmreg_ptr 'Global Hmus Player Vars word tempo word song_pc word song_div word song_ptr word chfre[4] byte chfx[4] byte chvol[4] byte hmus_state byte hmvol byte fxphs 'Sound FX Variables word runlen[2] word envamp[2] word sfx_ptr[2] byte envphs[2] byte fmcnt[2], fmfreq[2] byte loadsfx[2] CON '' Hss Master Control PUB start : okay stop okay := cog1 := cognew(@entry, @snd_regs) + 1 okay := cog2 := cognew(hsound, @hsnd_stack) + 1 PUB stop if cog1 cogstop(cog1~ - 1) if cog2 cogstop(cog2~ - 1) PUB peek(addrptr) : var1 var1 := LONG[@snd_regs][addrptr] CON '' Hydra Music Commands PUB hmus_load(songptr) | z hmvol := 15 song_div := 0 song_ptr := songptr song_pc := WORD[songptr][8] tempo := WORD[songptr][12] repeat z from 0 to 3 chfx[z] := 0 PUB hmus_play hmus_state := 1 PUB hmus_stop | z hmus_state := 0 repeat z from 0 to 3 chvol[z] := 0 PUB hmus_pause hmus_state := 0 PUB hmus_tempo(var1) tempo := var1 PUB get_hmus_tempo : var1 var1 := tempo PUB hmus_vol(var1) hmvol := var1 <# 15 #> 0 PUB get_hmus_vol : var1 var1 := hmvol CON '' FXsynth Commands PUB sfx_play(chan, soundptr) if(chan == 1) sfx_ptr[0] := soundptr loadsfx[0] := 0 if(chan == 2) sfx_ptr[1] := soundptr loadsfx[1] := 0 PUB sfx_stop(chan) if(chan == 1) sfx_ptr[0] := 0 if(chan == 2) sfx_ptr[1] := 0 PUB sfx_keyoff(chan) if(chan == 1) envphs[0] := 3 if(chan == 2) envphs[1] := 3 CON '' Hydra DPCM Commands PUB dpcm_play(soundptr) dpcmreg_ptr := soundptr PUB dpcm_stop dpcmreg_ptr := 1 CON ''***************************** ''* Hss Sound Engine * ''***************************** PRI Hsound repeat 'Update Music Engine UpdateMus(song_ptr, Hmus_state) 'Update Music Player VolumeInterpol 'Delay and Interpolate Volume to Remove Pops and Clicks. 'Update DPCM Engine if(dpcmreg_ptr) DpcmUpdate 'Update the DPCM registers 'Update SoundFX Engine 'FX channel A FXSynth(0,32) 'FX channel B FXSynth(1, 40) PRI VolumeInterpol | z, channelmul, musvar, freqval fxphs += 5 'Volume Interpolation repeat z from 0 to 3 step 1 channelmul := 4+(8*z) musvar := (chvol[z]*(hmvol+1))&$F0 snd_regs[channelmul] := (snd_regs[channelmul] & 15)+musvar 'Freq Interpolation channelmul -= 1 'Jump down a REG to Freq musvar := chfre[z]<<16 if(chfx[z] == 0) 'None snd_regs[channelmul] := musvar elseif(chfx[z] < 3) 'Vibrato (light/hard) if(fxphs < 128) snd_regs[channelmul] := musvar+(chfre[z]<<(7+chfx[z])) else snd_regs[channelmul] := musvar-(chfre[z]<<(7+chfx[z])) elseif(chfx[z] == 3) 'Tremolo if(fxphs < 128) snd_regs[channelmul] := musvar else snd_regs[channelmul] := musvar<<1 else 'Portamento freqval := snd_regs[channelmul]>>16 if(freqval & $F000 == chfre[z] & $F000) snd_regs[channelmul] := musvar elseif(freqval < chfre[z]) snd_regs[channelmul] := snd_regs[channelmul]+(chfx[z]<<22) else snd_regs[channelmul] := snd_regs[channelmul]-(chfx[z]<<22) PRI UpdateMus(songptr, state) | channel, channelmul, scrdat, freq, freqoct, flag if(state == 0) return ''Song is not playing. song_div++ if(song_div => tempo) 'Tempo Divider song_div := 0 flag := 0 repeat 'Score Decoder and Processor scrdat := BYTE[song_ptr][song_pc] channel := scrdat & 3 channelmul := channel<<3 song_pc++ ''Base Commands if(scrdat == 0) 'End Row quit if(scrdat == 1) 'Repeat Song song_pc := WORD[songptr][9] quit if(scrdat == 2) 'End Song hmus_stop quit if(scrdat == 3) 'Set Flag flag := 1 next if((scrdat & $3C) == $20) 'Patch HI Note flag := 2 scrdat := scrdat>>3 scrdat += 64+channel if(scrdat & 4) 'Change Note freq := scrdat>>3 freqoct := freq/12 freq -= freqoct*12 case flag 1 : freqoct += 2 2 : freqoct += 6 other : freqoct += 4 flag := 0 snd_regs[4+channelmul] := snd_regs[4+channelmul] & $FE chfre[channel] := NoteFreqs[freq]>>(6-freqoct) snd_regs[4+channelmul] := (snd_regs[4+channelmul] & $FE)+1 next 'Repeat To Next Datum if(scrdat & 8) 'Change Evelope / Channel Effect if(flag) chfx[channel] := scrdat>>4 flag := 0 else chvol[channel] := scrdat>>4 next 'Repeat To Next Datum if(scrdat & 16) 'Change Instrument freq := (scrdat & $E0)>>3 freq += flag<<5 flag := 0 snd_regs[0+channelmul] := songptr+WORD[songptr+32][freq] snd_regs[1+channelmul] := WORD[songptr+32][freq+1] snd_regs[2+channelmul] := WORD[songptr+32][freq+2] snd_regs[4+channelmul] := WORD[songptr+32][freq+3] & $0F next 'Repeat To Next Datum if(scrdat & 64) 'Detune chfre[channel] := chfre[channel]+(chfre[channel]>>8) PRI DpcmUpdate if(dpcmreg_ptr > 15) 'Play Sample. dpcm_regs[2] := 65535 'End sample if one was playing dpcm_regs[0] := dpcmreg_ptr+8 dpcm_regs[4] := 128 dpcm_regs[3] := LONG[dpcmreg_ptr][1] 'Get sampling rate dpcm_regs[1] := WORD[dpcmreg_ptr][1] 'Get length dpcm_regs[2] := 0 'Reset play counter elseif(dpcmreg_ptr == 1) 'Stop Sample dpcm_regs[2] := 65535 'End sample dpcm_regs[4] := 128 dpcmreg_ptr := 0 PRI FXSynth(SoundVars, ChannelFX) | TimeCnt, SoundFX, Modwav, FMwav, AMwav TimeCnt := Cnt SoundFX := sfx_ptr[SoundVars] if(loadsfx[SoundVars] == 0) 'Setup OSC WaveForm case BYTE[SoundFX][0] $00: 'Sine snd_regs[ChannelFX] := @SineTable snd_regs[1+ChannelFX] := 64 $01: 'Fast Sine snd_regs[ChannelFX] := @FastSine snd_regs[1+ChannelFX] := 32 $02: 'Sawtooth snd_regs[ChannelFX] := @Sawtooth snd_regs[1+ChannelFX] := 64 $03: 'Square snd_regs[ChannelFX] := @SqrTable snd_regs[1+ChannelFX] := 32 $04: 'Fast Square snd_regs[ChannelFX] := @FastSqr snd_regs[1+ChannelFX] := 8 $05: 'Buzz snd_regs[ChannelFX] := @NoteFreqs snd_regs[1+ChannelFX] := 24 $06: 'Noise snd_regs[ChannelFX] := $F002 snd_regs[1+ChannelFX] := 3000 snd_regs[2+ChannelFX] := 0 snd_regs[4+ChannelFX] := $01 loadsfx[SoundVars] := 1 runlen[SoundVars] := 0 fmcnt[SoundVars] := 0 fmfreq[SoundVars] := 0 envamp[SoundVars] := 0 envphs[SoundVars] := 0 ''Modulation Code fmfreq[SoundVars]++ if(fmfreq[SoundVars] => BYTE[SoundFX][4]) fmfreq[SoundVars] := 0 fmcnt[SoundVars]++ fmcnt[SoundVars] := fmcnt[SoundVars] & $3F case BYTE[SoundFX][5] $00: Modwav := BYTE[@SineTable][fmcnt[SoundVars]] $01: Modwav := BYTE[@FastSine][fmcnt[SoundVars] & 31] $02: Modwav := fmcnt[SoundVars]<<2 $03: Modwav := !fmcnt[SoundVars]<<2 $04: if(fmcnt[SoundVars] & 8) Modwav := $ff else Modwav := $00 $05: Modwav := BYTE[$F002][fmcnt[SoundVars]] $FF: Modwav := BYTE[SoundFX+12][fmcnt[SoundVars] & 15] fmwav := Modwav/(BYTE[SoundFX][6]) 'FM amount amwav := 256-(Modwav/(BYTE[SoundFX][7])) 'AM amount amwav := (BYTE[SoundFX][3]*amwav)>>8 ''Envelope Generator if(envphs[SoundVars] == 0) 'Attack envamp[SoundVars] += BYTE[SoundFX][8] if(envamp[SoundVars] > 8191) envamp[SoundVars] := 8191 envphs[SoundVars] := 1 if(BYTE[SoundFX][8] == $ff) envamp[SoundVars] := 8191 if(envphs[SoundVars] == 1) 'Decay envamp[SoundVars] -= BYTE[SoundFX][9] if(envamp[SoundVars] & $8000) envphs[SoundVars] := 2 if(envamp[SoundVars] =< (BYTE[SoundFX][10]<<5)) envphs[SoundVars] := 2 if(envphs[SoundVars] == 2) 'Sustain envamp[SoundVars] := (BYTE[SoundFX][10]<<5) if(envphs[SoundVars] == 3) 'Release envamp[SoundVars] -= BYTE[SoundFX][11] if(envamp[SoundVars] & $8000) envamp[SoundVars] := 4 amwav := ((envamp[SoundVars]>>9)*(amwav+1))>>4 ''Run Length and Outputing if(SoundFX > 15) runlen[SoundVars]++ snd_regs[3+ChannelFX] := (BYTE[SoundFX][2]+fmwav)<<24 'Update Frequency snd_regs[4+ChannelFX] := (amwav<<4)+(snd_regs[4+ChannelFX] & $0F) 'Update Amplitude else snd_regs[4+ChannelFX] := $00 'Mute if(BYTE[SoundFX][1] == $ff) '$ff = never stop runlen[SoundVars] := 0 if(runlen[SoundVars] > (BYTE[SoundFX][1]<<5)) 'Duration KeyOff envphs[SoundVars] := 3 WaitCnt(TimeCnt + 52_000) ''Delay for Synth Engine Update. DAT SineTable byte $80, $8c, $98, $a5, $b0, $bc, $c6, $d0 byte $da, $e2, $ea, $f0, $f5, $fa, $fd, $fe byte $ff, $fe, $fd, $fa, $f5, $f0, $ea, $e2 byte $da, $d0, $c6, $bc, $b0, $a5, $98, $8c byte $80, $73, $67, $5a, $4f, $43, $39, $2f byte $25, $1d, $15, $0f, $0a, $05, $02, $01 byte $00, $01, $02, $05, $0a, $0f, $15, $1d byte $25, $2f, $39, $43, $4f, $5a, $67, $73 Sawtooth byte $ff, $fb, $f7, $f3, $ef, $eb, $e7, $e3 byte $df, $db, $d7, $d3, $cf, $cb, $c7, $c3 byte $bf, $bb, $b7, $b3, $af, $ab, $a7, $a3 byte $9f, $9b, $97, $93, $8f, $8b, $87, $83 byte $80, $7c, $78, $74, $70, $6c, $68, $64 byte $60, $5c, $58, $54, $50, $4c, $48, $44 byte $40, $3c, $38, $34, $30, $2c, $28, $24 byte $20, $1c, $18, $14, $10, $0c, $08, $04 FastSine byte $80, $98, $b0, $c6, $da, $ea, $f5, $fd byte $ff, $fd, $f5, $ea, $da, $c6, $b0, $98 byte $80, $67, $4f, $39, $25, $15, $0a, $02 byte $00, $02, $0a, $15, $25, $39, $4f, $67 SqrTable byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff byte $00, $00, $00, $00, $00, $00, $00, $00 byte $00, $00, $00, $00, $00, $00, $00, $00 FastSqr byte $ff, $ff, $ff, $ff, $00, $00, $00, $00 'Note LookupTable. NoteFreqs word $85F3, $8DEA, $965B, $9F4B, $A8C4, $B2CD, $BD6F, $C8B3, $D4A2, $E147, $EEAC, $FCDE 'Top Octave Lookup CON ''***************************** ''* WaveTable Synth v1.2 * ''* DPCM Synth v1.1 * ''* (C)2006 Andrew Arsenault * ''***************************** DAT org entry mov dira,Port_Pins 'Setup output pins mov ctra,Right_ctra 'Setup Right Audio Channel mov ctrb,Left_ctra 'Setup Left Audio Channel mov ChlA_wave,#256 'Set channel signals. mov ChlA_offset,#0 'Set channel's offset. mov ChlA_counter,#0 mov Time,#10 add Time,cnt 'Prepare for asm type WAITCNT loop. 'MAIN LOOP update waitcnt Time,Timing_delay 'Wait for CNT = D, then add S into D 'Transfer Sound Registers mov addrregs,par mov y,NumberOfChannels 'Fetch Channel's Registers transferchl rdlong ChlAp_sampptr,addrregs add addrregs,#4 rdlong ChlAp_sampend,addrregs add addrregs,#4 rdlong Ch1Ap_samplpp,addrregs add addrregs,#4 rdlong Ch1Ap_freq,addrregs add addrregs,#4 rdlong ChlAp_keyon,addrregs 'Fetch Channel's Static Variables add addrregs,#8 rdlong ChlA_offset,addrregs add addrregs,#4 rdlong ChlA_counter,addrregs 'Run Synth Engine on Channel call #wvsynth 'Store Channel's Static Variables (Tucked Center X move to Wave) wrlong ChlA_counter,addrregs sub addrregs,#4 sub x,#256 wrlong ChlA_offset,addrregs sub addrregs,#4 mov ChlA_wave,x 'Doesn't Waste anything doing this. wrlong ChlA_wave,addrregs add addrregs,#12 'Loop Until All Channel's Are Done. djnz y,#transferchl 'Run DPCM Engine call #dpcm 'Mix Channels Together mov addrregs,par mov ChlA_wave,#0 add addrregs,#5*4 mov y,NumberOfChannels mixchls rdlong x,addrregs add ChlA_wave,x add addrregs,#8*4 djnz y,#mixchls mov x,DPCM_wave 'Add DPCM shl x,#2 add ChlA_wave,x shl ChlA_wave,#20 'Convert 12bit singal into a 32bit one. 'Update output Channels then repeat again. mov frqa,ChlA_wave mov frqb,ChlA_wave jmp #update '-------------------------Dpcm Engine-------------------------' dpcm mov addrregs,par add addrregs,#192 rdlong DPCM_address,addrregs 'Start Address add addrregs,#4 rdlong DPCM_runlen,addrregs 'File Lenght add addrregs,#4 rdlong DPCM_offset,addrregs 'File Offset add addrregs,#4 rdlong DPCM_freq,addrregs 'Playback Speed add addrregs,#4 rdlong DPCM_wave,addrregs 'Waveform Amp 'Check for if keyon/length is set. cmp DPCM_offset,DPCM_runlen wc if_ae jmp #mute_dpcm 'End of file 'Freq Timer/Divider and Increase sampling offset add DPCM_counter,DPCM_freq wc if_nc jmp #done_dpcm 'Decode DPCM add DPCM_address,DPCM_offset rdbyte x,DPCM_address 'Fetch Datum mov DPCM_delta,x shr DPCM_delta,#6 mov y,#1 shl y,DPCM_delta mov DPCM_delta,y mov y,#1 shl y,DPCM_phs test x,y wc if_c add DPCM_wave,DPCM_delta if_nc sub DPCM_wave,DPCM_delta add DPCM_phs,#1 cmp DPCM_phs,#6 wc if_b jmp #done_dpcm mov DPCM_phs,#0 add DPCM_offset,#1 jmp #done_dpcm mute_dpcm mov DPCM_wave, #128 done_dpcm mov addrregs,par add addrregs,#200 wrlong DPCM_offset,addrregs 'File Offset add addrregs,#8 wrlong DPCM_wave,addrregs 'Wave dpcm_ret ret '-----------------------Dpcm Engine End-----------------------' '-------------------------Sound Engine-------------------------' 'Freq Timer/Divider and Increase sampling offset wvsynth add ChlA_counter,Ch1Ap_freq wc if_c add ChlA_offset,#1 'Reset sample position and lock at zero if Keyoff. test ChlAp_keyon,#%0001 wc if_nc mov ChlA_offset,#0 'Reset(loop) if needed cmp ChlA_offset,ChlAp_sampend wc if_ae mov ChlA_offset,Ch1Ap_samplpp 'Check BitRate and Set Offset mov x,ChlA_offset test ChlAp_keyon,#%0010 wc if_c shr x,#1 'Fetch WaveTable mov ChlA_wave,ChlAp_sampptr add ChlA_wave,x rdbyte ChlA_wave,ChlA_wave 'Check BitRate and Skip if 8bit test ChlAp_keyon,#%0010 wc if_nc jmp #skip_4bitsam 'Convert 4bit to 8bit test ChlA_offset,#%0001 wc if_c shr ChlA_wave,#4 if_nc and ChlA_wave,#%00001111 mov x,ChlA_wave shl ChlA_wave,#4 add ChlA_wave,x 'Center Amplitude and mute if Keyoff. skip_4bitsam test ChlAp_keyon,#%0001 wc if_nc mov ChlA_wave,#128 'Volume Multiply mov x,#0 test ChlAp_keyon,#%10000000 wc if_c add x,ChlA_wave if_nc add x,#128 shr ChlA_wave,#1 test ChlAp_keyon,#%01000000 wc if_c add x,ChlA_wave if_nc add x,#64 add x,#64 shr ChlA_wave,#1 test ChlAp_keyon,#%00100000 wc if_c add x,ChlA_wave if_nc add x,#32 add x,#96 shr ChlA_wave,#1 test ChlAp_keyon,#%00010000 wc if_c add x,ChlA_wave if_nc add x,#16 add x,#112 'Return Audio as X. wvsynth_ret ret '-----------------------Sound Engine End-----------------------' Port_Pins long %00000000_00000000_00001100_00000000 '- CTR PLL -------- BPIN --- APIN Right_ctra long %0_00110_000_00000000_000000_000_001010 Left_ctra long %0_00110_000_00000000_000000_000_001011 Timing_delay long 2500 'Sampling Rate = 32,000.00hz NumberOfChannels long 6 Time res 1 addrregs res 1 x res 1 y res 1 'WaveTable Synth Accumulators ChlA_wave res 1 ChlA_offset res 1 ChlA_counter res 1 ChlAp_sampptr res 1 ChlAp_sampend res 1 Ch1Ap_samplpp res 1 Ch1Ap_freq res 1 ChlAp_keyon res 1 'DPCM Accumulators DPCM_wave res 1 DPCM_address res 1 DPCM_offset res 1 DPCM_counter res 1 DPCM_freq res 1 DPCM_runlen res 1 DPCM_phs res 1 DPCM_delta res 1