: PC2! ( c c p-addr -- Data byte A, high address byte B, port address C - OUT to port with A and B registers set ) SWAP >< OR PC! ; : SID! ( c c -- Data value, register 0-31; bits 5,6 are for interrupt settings; bit 7 /CS is handled ) 2DUP 128 OR 84 PC2! 2DUP 127 AND 84 PC2! 128 OR 84 PC2! ; ( -- n Voice control register flags ) : SID:CTL:GATE 1 ; : SID:CTL:SYNC 2 ; : SID:CTL:RING 4 ; : SID:CTL:TEST 8 ; : SID:CTL:TRI 16 ; : SID:CTL:SAW 32 ; : SID:CTL:PWM 64 ; : SID:CTL:NOISE 128 ; ( Voice 1 ) : SID0/1:FREQ! ( n -- Reg 0,1 - frequency voice 1 ) DUP 255 AND 0 SID! >< 255 AND 1 SID! ; : SID2/3:PWM! ( n -- Reg 2,3 - pulse wave duty cycle voice 2 ) DUP 255 AND 2 SID! >< 15 AND 3 SID! ; : SID4! ( c -- Reg 4 - control register voice 1 ) 4 SID! ; : SID5:ATK/DEC! ( c -- Reg 5 - attack duration / decay duration voice 1 ) 15 AND SWAP 4 LSHIFT OR 5 SID! ; : SID6:SUS/REL! ( c -- Reg 6 - sustain level / release duration voice 1 ) 15 AND SWAP 4 LSHIFT OR 6 SID! ; ( Voice 2 ) : SID7/8:FREQ! ( n -- Reg 7,8 - frequency voice 2 ) DUP 255 AND 7 SID! >< 15 AND 8 SID! ; : SID9/10:PWM! ( n -- Reg 9,10 - pulse wave duty cycle voice 2 ) DUP 255 AND 9 SID! >< 255 AND 10 SID! ; : SID11! ( c -- Reg 10 - control register voice 2 ) 11 SID! ; : SID12:ATK/DEC! ( c -- Reg 12 - attack duration / decay duration voice 2 ) 15 AND SWAP 4 LSHIFT OR 12 SID! ; : SID13:SUS/REL! ( c -- Reg 13 - sustain level / release duration voice 2 ) 15 AND SWAP 4 LSHIFT OR 13 SID! ; ( Voice 3 ) : SID14/15:FREQ! ( n -- Reg 14,15 - frequency voice 3 ) DUP 255 AND 14 SID! >< 15 AND 15 SID! ; : SID16/17:PWM! ( n -- Reg 16,17 - pulse wave duty cycle voice 3 ) DUP 255 AND 16 SID! >< 255 AND 17 SID! ; : SID18! ( c -- Reg 18 - control register voice 18 ) 18 SID! ; : SID19:ATK/DEC! ( c -- Reg 19 - attack duration / decay duration voice 3 ) 15 AND SWAP 4 LSHIFT OR 19 SID! ; : SID20:SUS/REL! ( c -- Reg 20 - sustain level / release duration voice 3 ) 15 AND SWAP 4 LSHIFT OR 20 SID! ; ( Filters ) : SID21/22:CUT! ( n -- Reg 21/22 - filter cutoff frequency 0 - 2047 / 11 bits ) DUP 7 AND 21 SID! 3 RSHIFT 255 AND 22 SID! ; ( c -- c Reg 23 - filter resonance 0 - 15 / 4 bits, ext, voice 3, voice 2, voice 1 ) : SID23:RES 15 AND 4 LSHIFT ; : SID23:V1 1 OR ; : SID23:V2 2 OR ; : SID23:V3 4 OR ; : SID23:EXT 8 OR ; : SID23! ( c -- ) 23 SID! ; ( c -- c Reg 24 - filter mode and main volume control ) : SID24:VOL 15 AND ; : SID24:LOWPASS 16 OR ; : SID24:BANDPASS 32 OR ; : SID24:HIGHPASS 64 OR ; : SID24:MUTEVOICE3 128 OR ; : SID24! ( c -- ) 24 SID! ; : SID:RST ( -- Put SID chip in known state ) 4389 SID0/1:FREQ! 0 SID4! 4 2 SID5:ATK/DEC! 10 9 SID6:SUS/REL! 2048 SID2/3:PWM! 4389 SID7/8:FREQ! 0 SID11! 4 2 SID12:ATK/DEC! 10 9 SID13:SUS/REL! 2048 SID9/10:PWM! 4389 SID14/15:FREQ! 0 SID18! 4 2 SID19:ATK/DEC! 10 9 SID20:SUS/REL! 2048 SID16/17:PWM! 1024 SID21/22:CUT! 10 SID23:RES SID23! 15 SID24:VOL SID24! ; ( -- n Frequency table: ) : SID:NOTE:C4 4389 ; : SID:NOTE:C4# 4650 ; : SID:NOTE:D4 4927 ; : SID:NOTE:D4# 5220 ; : SID:NOTE:E4 5530 ; : SID:NOTE:F4 5859 ; : SID:NOTE:F4# 6207 ; : SID:NOTE:G4 6577 ; : SID:NOTE:G4# 6968 ; : SID:NOTE:A4 7382 ; : SID:NOTE:A4# 7821 ; : SID:NOTE:B4 8286 ; ( n -- n Octave shifts ) : SID:OCT:UP 2* ; : SID:OCT:DOWN 2/ ; ( Voice contorl registers ) VARIABLE SID:V1:CTL : SID:V1:CTL! ( c -- Set CTL register for voice 1 ) SID:V1:CTL ! ; : SID:V1:NOTE:ON ( n -- Start note of given frequency ) SID0/1:FREQ! SID:V1:CTL @ SID:CTL:GATE OR SID4! ; : SID:V1:NOTE:OFF ( -- Stop note ) SID:V1:CTL @ SID:CTL:GATE INVERT AND SID4! ; VARIABLE SID:V2:CTL : SID:V2:CTL! ( c -- Set CTL register for voice 2 ) SID:V2:CTL ! ; : SID:V2:NOTE:ON ( n -- Start note of given frequency ) SID7/8:FREQ! SID:V2:CTL @ SID:CTL:GATE OR SID11! ; : SID:V2:NOTE:OFF ( -- Stop note ) SID:V2:CTL @ SID:CTL:GATE INVERT AND SID11! ; VARIABLE SID:V3:CTL : SID:V3:CTL! ( c -- Set CTL register for voice 3 ) SID:V3:CTL ! ; : SID:V3:NOTE:ON ( n -- Start note of given frequency ) SID14/15:FREQ! SID:V3:CTL @ SID:CTL:GATE OR SID18! ; : SID:V3:NOTE:OFF ( -- Stop note ) SID:V3:CTL @ SID:CTL:GATE INVERT AND SID18! ; : DELAY 10000 0 DO LOOP ; : SID:V1:TEST:NOTE SID:CTL:TRI SID:V1:CTL! SID:NOTE:C4 SID:V1:NOTE:ON DELAY DELAY SID:V1:NOTE:OFF ; : SID:V2:TEST:NOTE SID:CTL:SAW SID:V2:CTL! SID:NOTE:D4 SID:OCT:UP SID:V2:NOTE:ON DELAY DELAY SID:V2:NOTE:OFF ; : SID:V3:TEST:NOTE SID:CTL:PWM SID:V3:CTL! SID:NOTE:E4 SID:V3:NOTE:ON DELAY DELAY SID:V3:NOTE:OFF ; : SID:TEST:MELODY SID:V1:TEST:NOTE SID:V2:TEST:NOTE SID:V3:TEST:NOTE ; : SID:TEST:FILTER 10 SID23:RES SID23:V1 SID23:V2 SID23:V3 SID23:EXT SID23! 15 SID24:VOL SID24:LOWPASS SID24! SID:CTL:PWM SID:V1:CTL! SID:NOTE:D4 SID:V1:NOTE:ON 2047 0 DO I SID21/22:CUT! 1 +LOOP SID:V1:NOTE:OFF 15 SID24:VOL SID24:BANDPASS SID24! SID:CTL:PWM SID:V2:CTL! SID:NOTE:D4 SID:V2:NOTE:ON 2047 0 DO I SID21/22:CUT! 1 +LOOP SID:V2:NOTE:OFF 15 SID24:VOL SID24:HIGHPASS SID24! SID:CTL:PWM SID:V3:CTL! SID:NOTE:D4 SID:V3:NOTE:ON 2047 0 DO I SID21/22:CUT! 1 +LOOP SID:V3:NOTE:OFF 0 SID23! ; : SID:PLAY SID:V1:NOTE:ON DELAY SID:V1:NOTE:OFF ; : SID:TEST:SONG SID:CTL:TRI SID:V1:CTL! SID:NOTE:G4 SID:PLAY SID:NOTE:E4 SID:PLAY SID:NOTE:E4 SID:PLAY SID:NOTE:F4 SID:PLAY SID:NOTE:D4 SID:PLAY SID:NOTE:D4 SID:PLAY SID:NOTE:C4 SID:PLAY SID:NOTE:E4 SID:PLAY SID:NOTE:G4 SID:PLAY DELAY DELAY SID:NOTE:G4 SID:PLAY SID:NOTE:E4 SID:PLAY SID:NOTE:E4 SID:PLAY SID:NOTE:F4 SID:PLAY SID:NOTE:D4 SID:PLAY SID:NOTE:D4 SID:PLAY SID:NOTE:C4 SID:PLAY SID:NOTE:E4 SID:PLAY SID:NOTE:C4 SID:PLAY ; SID:RST SID:TEST:MELODY SID:TEST:FILTER SID:TEST:SONG