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d06e5c404c
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6b449b84ef
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db35d4709d
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b83d5400f9
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300
sid.4th
300
sid.4th
@@ -1,190 +1,150 @@
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: PC2! ( c c p-addr -- Data byte A, high address byte B, port address C - OUT to port with A and B registers set )
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( --- Gforth SID chip stub --- )
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( : PC! DUP 255 AND . 8 RSHIFT . . CR ; )
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( : >< DUP 8 RSHIFT SWAP 8 LSHIFT 65534 AND OR ; )
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( --- Library --- )
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: PC2! ( b b p-addr -- ) ( Data byte A, high address byte B, port address C )
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SWAP >< OR PC! ;
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: SID! ( c c -- Data value, register 0-31; bits 5,6 are for interrupt settings; bit 7 /CS is handled )
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2DUP 128 OR 84 PC2!
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2DUP 127 AND 84 PC2!
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128 OR 84 PC2! ;
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: BIT ( n -- ) ( define bit flag )
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1 SWAP LSHIFT CONSTANT ;
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: BIT+ ( n -- n+1 ) ( define bit flag and next )
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DUP 1+ SWAP BIT ;
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( -- n Voice control register flags )
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: SID:CTL:GATE 1 ;
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: SID:CTL:SYNC 2 ;
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: SID:CTL:RING 4 ;
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: SID:CTL:TEST 8 ;
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: SID:CTL:TRI 16 ;
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: SID:CTL:SAW 32 ;
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: SID:CTL:PWM 64 ;
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: SID:CTL:NOISE 128 ;
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( --- SID chip access --- )
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( Voice 1 )
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: SID0/1:FREQ! ( n -- Reg 0,1 - frequency voice 1 )
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DUP 255 AND 0 SID! >< 255 AND 1 SID! ;
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: SID2/3:PWM! ( n -- Reg 2,3 - pulse wave duty cycle voice 2 )
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DUP 255 AND 2 SID! >< 15 AND 3 SID! ;
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: SID4! ( c -- Reg 4 - control register voice 1 )
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4 SID! ;
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: SID5:ATK/DEC! ( c -- Reg 5 - attack duration / decay duration voice 1 )
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15 AND SWAP 4 LSHIFT OR 5 SID! ;
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: SID6:SUS/REL! ( c -- Reg 6 - sustain level / release duration voice 1 )
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15 AND SWAP 4 LSHIFT OR 6 SID! ;
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: SID! ( b n0-31 -- ) ( Send byte to SID { 1data , 4?register | 2?interrupt } )
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2DUP 128 OR 84 PC2!
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2DUP 127 AND 84 PC2!
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128 OR 84 PC2! ;
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( Voice 2 )
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: SID7/8:FREQ! ( n -- Reg 7,8 - frequency voice 2 )
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DUP 255 AND 7 SID! >< 15 AND 8 SID! ;
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: SID9/10:PWM! ( n -- Reg 9,10 - pulse wave duty cycle voice 2 )
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DUP 255 AND 9 SID! >< 255 AND 10 SID! ;
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: SID11! ( c -- Reg 10 - control register voice 2 )
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11 SID! ;
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: SID12:ATK/DEC! ( c -- Reg 12 - attack duration / decay duration voice 2 )
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15 AND SWAP 4 LSHIFT OR 12 SID! ;
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: SID13:SUS/REL! ( c -- Reg 13 - sustain level / release duration voice 2 )
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15 AND SWAP 4 LSHIFT OR 13 SID! ;
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( --- Voice selection --- )
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( Voice 3 )
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: SID14/15:FREQ! ( n -- Reg 14,15 - frequency voice 3 )
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DUP 255 AND 14 SID! >< 15 AND 15 SID! ;
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: SID16/17:PWM! ( n -- Reg 16,17 - pulse wave duty cycle voice 3 )
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DUP 255 AND 16 SID! >< 255 AND 17 SID! ;
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: SID18! ( c -- Reg 18 - control register voice 18 )
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18 SID! ;
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: SID19:ATK/DEC! ( c -- Reg 19 - attack duration / decay duration voice 3 )
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15 AND SWAP 4 LSHIFT OR 19 SID! ;
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: SID20:SUS/REL! ( c -- Reg 20 - sustain level / release duration voice 3 )
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15 AND SWAP 4 LSHIFT OR 20 SID! ;
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CREATE VOICE-BASES 0 , 7 , 14 , ( { 3'base } )
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CREATE VOICE-CTLS 0 , 0 , 0 , ( { 3clt-reg-shadow } )
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( Filters )
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: SID21/22:CUT! ( n -- Reg 21/22 - filter cutoff frequency 0 - 2047 / 11 bits )
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: VOICE>BASE ( voice -- 'reg-no )
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CELL * VOICE-BASES + ;
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: VOICE>CTL ( voice -- 'ctl-addr )
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CELL * VOICE-CTLS + ;
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CREATE >VOICE-BASE VOICE-BASES ,
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CREATE >VOICE-CTL VOICE-CTLS ,
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: VOICE ( voice -- ) ( select SELECT voice )
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DUP VOICE>BASE >VOICE-BASE ! VOICE>CTL >VOICE-CTL ! ;
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( --- SID chip control register flags --- )
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0 BIT+ GATE
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BIT+ SYNC
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BIT+ RING
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BIT+ TEST
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BIT+ TRI
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BIT+ SAW
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BIT+ PWM
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BIT+ NOISE
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DROP
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( --- Voice register operation --- )
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: VOICE! ( b n -- ) ( Store byte in selected voice register n )
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>VOICE-BASE @ @ + SID! ;
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: FREQ! ( n -- ) ( Reg 0,1 - Set frequency )
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DUP 255 AND 0 VOICE! >< 255 AND 1 VOICE! ;
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: PWM! ( n -- ) ( Reg 2,3 - Set pulse wave duty cycle )
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DUP 255 AND 2 VOICE! >< 15 AND 3 VOICE! ;
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: CTL! ( b -- ) ( Reg 4 - Set control register; write-through shadow )
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DUP >VOICE-CTL @ ! 4 VOICE! ;
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: ATK|DEC! ( n0-15 n0-15 -- ) ( Reg 5 - Set attack duration / decay duration )
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15 AND SWAP 4 LSHIFT OR 5 VOICE! ;
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: SUS|REL! ( n0-15 n0-15 -- ) ( Reg 6 - Set sustain level / release duration )
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15 AND SWAP 4 LSHIFT OR 6 VOICE! ;
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: START ( freq -- ) ( Start note at given frequency )
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FREQ!
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>VOICE-CTL @ @ GATE OR 4 VOICE! ;
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: STOP ( -- ) ( Stop note )
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>VOICE-CTL @ @ GATE INVERT AND 4 VOICE! ;
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( --- Other registers operation --- )
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: CUTOFF! ( n0-2047 -- ) ( Reg 21/22 - { 5?- | 11?filter-cutoff-frequency } )
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DUP 7 AND 21 SID! 3 RSHIFT 255 AND 22 SID! ;
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( c -- c Reg 23 - filter resonance 0 - 15 / 4 bits, ext, voice 3, voice 2, voice 1 )
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: SID23:RES 15 AND 4 LSHIFT ;
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: SID23:V1 1 OR ;
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: SID23:V2 2 OR ;
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: SID23:V3 4 OR ;
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: SID23:EXT 8 OR ;
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: SID23! ( c -- )
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23 SID! ;
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( c -- c Reg 24 - filter mode and main volume control )
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: SID24:VOL 15 AND ;
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: SID24:LOWPASS 16 OR ;
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: SID24:BANDPASS 32 OR ;
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: SID24:HIGHPASS 64 OR ;
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: SID24:MUTEVOICE3 128 OR ;
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: SID24! ( c -- )
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24 SID! ;
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: SID:RST ( -- Put SID chip in known state )
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4389 SID0/1:FREQ! 0 SID4! 4 2 SID5:ATK/DEC! 10 9 SID6:SUS/REL! 2048 SID2/3:PWM!
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4389 SID7/8:FREQ! 0 SID11! 4 2 SID12:ATK/DEC! 10 9 SID13:SUS/REL! 2048 SID9/10:PWM!
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4389 SID14/15:FREQ! 0 SID18! 4 2 SID19:ATK/DEC! 10 9 SID20:SUS/REL! 2048 SID16/17:PWM!
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1024 SID21/22:CUT! 10 SID23:RES SID23!
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15 SID24:VOL SID24! ;
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( Reg 23 - { 4?filter-resonance [0-15] | 1?ext | 1?voice-2 | 1?voice-1 | 1?voice-0 } )
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: RES ( n0-15 -- b ) 15 AND 4 LSHIFT ;
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: VOICE-FILTER ( voice -- b ) 1 SWAP LSHIFT ;
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3 BIT EXT-FILTER
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: RES|FILTER! ( b -- ) 23 SID! ;
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( -- n Frequency table: )
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: SID:NOTE:C4 4389 ;
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: SID:NOTE:C4# 4650 ;
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: SID:NOTE:D4 4927 ;
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: SID:NOTE:D4# 5220 ;
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: SID:NOTE:E4 5530 ;
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: SID:NOTE:F4 5859 ;
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: SID:NOTE:F4# 6207 ;
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: SID:NOTE:G4 6577 ;
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: SID:NOTE:G4# 6968 ;
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: SID:NOTE:A4 7382 ;
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: SID:NOTE:A4# 7821 ;
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: SID:NOTE:B4 8286 ;
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( n -- n Octave shifts )
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: SID:OCT:UP 2* ;
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: SID:OCT:DOWN 2/ ;
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( Reg 24 - { 1?mute-voice-3 | 1?highpass | 1?bandpass | 1?lowpass | 4?volume )
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: VOLUME ( n0-15 -- b ) 15 AND ;
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4 BIT+ LOWPASS
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BIT+ BANDPASS
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BIT+ HIGHPASS
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BIT+ MUTE-VOICE3
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DROP
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: MODE|VOLUME! 24 SID! ;
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( Voice contorl registers )
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VARIABLE SID:V1:CTL
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: SID:V1:CTL! ( c -- Set CTL register for voice 1 )
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SID:V1:CTL ! ;
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: SID:V1:NOTE:ON ( n -- Start note of given frequency )
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SID0/1:FREQ! SID:V1:CTL @ SID:CTL:GATE OR SID4! ;
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: SID:V1:NOTE:OFF ( -- Stop note )
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SID:V1:CTL @ SID:CTL:GATE INVERT AND SID4! ;
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( --- Frequency table --- )
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VARIABLE SID:V2:CTL
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: SID:V2:CTL! ( c -- Set CTL register for voice 2 )
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SID:V2:CTL ! ;
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: SID:V2:NOTE:ON ( n -- Start note of given frequency )
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SID7/8:FREQ! SID:V2:CTL @ SID:CTL:GATE OR SID11! ;
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: SID:V2:NOTE:OFF ( -- Stop note )
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SID:V2:CTL @ SID:CTL:GATE INVERT AND SID11! ;
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: C4 4389 ;
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: C4# 4650 ;
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: D4 4927 ;
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: D4# 5220 ;
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: E4 5530 ;
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: F4 5859 ;
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: F4# 6207 ;
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: G4 6577 ;
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: G4# 6968 ;
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: A4 7382 ;
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: A4# 7821 ;
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: B4 8286 ;
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VARIABLE SID:V3:CTL
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: SID:V3:CTL! ( c -- Set CTL register for voice 3 )
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SID:V3:CTL ! ;
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: SID:V3:NOTE:ON ( n -- Start note of given frequency )
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SID14/15:FREQ! SID:V3:CTL @ SID:CTL:GATE OR SID18! ;
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: SID:V3:NOTE:OFF ( -- Stop note )
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SID:V3:CTL @ SID:CTL:GATE INVERT AND SID18! ;
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: /OCTAVE 2* ;
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: \OCTAVE 2/ ;
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: DELAY 10000 0 DO LOOP ;
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( --- Reset --- )
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: SID:V1:TEST:NOTE
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SID:CTL:TRI SID:V1:CTL!
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SID:NOTE:C4 SID:V1:NOTE:ON
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DELAY DELAY
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SID:V1:NOTE:OFF ;
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: SID:V2:TEST:NOTE
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SID:CTL:SAW SID:V2:CTL!
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SID:NOTE:D4 SID:OCT:UP SID:V2:NOTE:ON
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DELAY DELAY
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SID:V2:NOTE:OFF ;
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: SID:V3:TEST:NOTE
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SID:CTL:PWM SID:V3:CTL!
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SID:NOTE:E4 SID:V3:NOTE:ON
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DELAY DELAY
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SID:V3:NOTE:OFF ;
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: VOICE-RESET C4 FREQ! 2048 PWM! 0 CTL! 4 2 ATK|DEC! 10 9 SUS|REL! ;
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: OTHER-RESET 1024 CUTOFF! 10 RES RES|FILTER! 15 VOLUME MODE|VOLUME! ;
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: SID:TEST:MELODY
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SID:V1:TEST:NOTE
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SID:V2:TEST:NOTE
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SID:V3:TEST:NOTE ;
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: SID-RESET ( Full SID chip reset )
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2 VOICE VOICE-RESET 1 VOICE VOICE-RESET 0 VOICE VOICE-RESET OTHER-RESET ;
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: SID:TEST:FILTER
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10 SID23:RES SID23:V1 SID23:V2 SID23:V3 SID23:EXT SID23!
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15 SID24:VOL SID24:LOWPASS SID24!
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SID:CTL:PWM SID:V1:CTL! SID:NOTE:D4 SID:V1:NOTE:ON
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2047 0 DO I SID21/22:CUT! 1 +LOOP
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SID:V1:NOTE:OFF
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15 SID24:VOL SID24:BANDPASS SID24!
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SID:CTL:PWM SID:V2:CTL! SID:NOTE:D4 SID:V2:NOTE:ON
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2047 0 DO I SID21/22:CUT! 1 +LOOP
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SID:V2:NOTE:OFF
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15 SID24:VOL SID24:HIGHPASS SID24!
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SID:CTL:PWM SID:V3:CTL! SID:NOTE:D4 SID:V3:NOTE:ON
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2047 0 DO I SID21/22:CUT! 1 +LOOP
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SID:V3:NOTE:OFF
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0 SID23! ;
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( --- Music --- )
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: SID:PLAY SID:V1:NOTE:ON DELAY SID:V1:NOTE:OFF ;
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: SID:TEST:SONG
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SID:CTL:TRI SID:V1:CTL!
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SID:NOTE:G4 SID:PLAY
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SID:NOTE:E4 SID:PLAY
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SID:NOTE:E4 SID:PLAY
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SID:NOTE:F4 SID:PLAY
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SID:NOTE:D4 SID:PLAY
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SID:NOTE:D4 SID:PLAY
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SID:NOTE:C4 SID:PLAY
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SID:NOTE:E4 SID:PLAY
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SID:NOTE:G4 SID:PLAY
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DELAY DELAY
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SID:NOTE:G4 SID:PLAY
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SID:NOTE:E4 SID:PLAY
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SID:NOTE:E4 SID:PLAY
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SID:NOTE:F4 SID:PLAY
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SID:NOTE:D4 SID:PLAY
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SID:NOTE:D4 SID:PLAY
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SID:NOTE:C4 SID:PLAY
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SID:NOTE:E4 SID:PLAY
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SID:NOTE:C4 SID:PLAY ;
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CREATE TEMPO 40000 ,
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: NOTE\\ ( whole note ) TEMPO @ ;
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: NOTE\ ( half note ) NOTE\\ 1 RSHIFT ;
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: NOTE ( quater note ) NOTE\\ 2 RSHIFT ;
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: NOTE/ ( eight note ) NOTE\\ 3 RSHIFT ;
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: NOTE// ( 1/16 ) NOTE\\ 3 RSHIFT ;
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: NOTE/// ( 1/32 ) NOTE\\ 3 RSHIFT ;
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SID:RST
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: DELAY ( delay -- ) 0 DO LOOP ;
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: PAUSE ( delay -- ) DUP DELAY DELAY ;
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SID:TEST:MELODY
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SID:TEST:FILTER
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SID:TEST:SONG
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: PLAY START DUP PAUSE STOP ;
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( --- Test --- )
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: SONG
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NOTE B4 PLAY NOTE/ PAUSE
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NOTE A4 PLAY NOTE/ PAUSE
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NOTE/ F4 PLAY NOTE/ G4 PLAY NOTE/ PAUSE
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NOTE A4 PLAY NOTE/ PAUSE
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NOTE/ F4 PLAY NOTE/ G4 PLAY NOTE/ PAUSE
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NOTE A4 PLAY NOTE/ PAUSE
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NOTE/ G4 PLAY NOTE/ F4 PLAY NOTE/ PAUSE
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NOTE E4 PLAY NOTE/ PAUSE
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;
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SID-RESET
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TRI CTL! ( Select triangle waveform )
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NOTE/ C4 PLAY
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SONG SONG
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Reference in New Issue
Block a user