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furnace/doc/7-systems/tia.md

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Atari 2600 (TIA)

help me! I can't even get this character in where I want! I've spent hours debugging the issue, counting every possible cycle and I still cannot get it right!

only 2 channels and 31 frequencies?!

Furnace isn't complete without this one...

effects

  • 10xx: select shape.
    • 0: nothing
    • 1: buzzy
    • 2: low buzzy
    • 3: flangy
    • 4: square
    • 5: square
    • 6: pure buzzy
    • 7: reedy
    • 8: noise
    • 9: reedy
    • A: pure buzzy
    • B: nothing
    • C: low square
    • D: low square
    • E: low pure buzzy
    • F: low reedy

info

this chip uses the TIA instrument editor.

  • pitch number can be used for absolute notes in arpeggio macros.

shape 1

pitch NTSC note cent PAL note cent
0 2096.0 C-7 +2 2080.0 C-7 -1
1 1048.0 C-6 +2 1040.0 C-6 -1
2 698.7 F-5 0.0 693.3 F-5 -1
3 524.0 C-5 +2 520.0 C-5 -1
4 419.2 G#4 +16 416.0 G#4 +3
5 349.3 F-4 0.0 346.7 F-4 -13
6 299.4 D-4 +33 297.1 D-4 +20
7 262.0 C-4 +3 260.0 C-4 -11
8 232.9 A#3 -2 231.1 A#3 -15
9 209.6 G#3 +15 208.0 G#3 +2
10 190.5 F#3 +50 189.1 F#3 +37
11 174.7 F-3 +1 173.3 F-3 -13
12 161.2 E-3 -39 160.0 D#3 +48
13 149.7 D-3 +33 148.6 D-3 +20
14 139.7 C#3 +13 138.7 C#3 +1
15 131.0 C-3 +3 130.0 C-3 -11
16 123.3 B-2 -3 122.4 B-2 -16
17 116.4 A#2 0.0 115.6 A#2 -14
18 110.3 A-2 +5 109.5 A-2 -8
19 104.8 G#2 +16 104.0 G#2 +3
20 99.8 G-2 +31 99.0 G-2 +17
21 95.3 G-2 -49 94.5 F#2 +36
22 91.1 F#2 -27 90.4 F#2 -40
23 87.3 F-2 0.0 86.7 F-2 -12
24 83.8 E-2 +29 83.2 E-2 +16
25 80.6 E-2 -39 80.0 D#2 +48
26 77.6 D#2 -5 77.0 D#2 -18
27 74.9 D-2 +34 74.3 D-2 +20
28 72.3 D-2 -27 71.7 D-2 -41
29 69.9 C#2 +15 69.3 C#2 0
30 67.6 C#2 -44 67.1 C-2 +44
31 65.5 C-2 +3 65.0 C-2 -11

shapes 2, 3

pitch NTSC note cent PAL note cent
0 67.6 C#2 -44 67.1 C-2 +44
1 33.8 C#1 -42 33.5 C-1 +42
2 22.5 F#0 -46 22.4 F-0 +46
3 16.9 C#0 -44 16.8 C-0 +44
4 13.5 13.4
5 11.3 11.2
6 9.7 9.6
7 8.5 8.4
8 7.5 7.5
9 6.8 6.7
10 6.1 6.1
11 5.6 5.6
12 5.2 5.2
13 4.8 4.8
14 4.5 4.5
15 4.2 4.2
16 4.0 4.0
17 3.8 3.7
18 3.6 3.5
19 3.4 3.4
20 3.2 3.2
21 3.1 3.0
22 3.0 2.9
23 2.8 2.8
24 2.7 2.7
25 2.6 2.6
26 2.5 2.5
27 2.4 2.4
28 2.3 2.3
29 2.3 2.2
30 2.2 2.2
31 2.1 2.1

shapes 4, 5

pitch NTSC note cent PAL note cent
0 15720.0 B-9 -9 15600.0 B-9 -23
1 7860.0 B-8 -9 7800.0 B-8 -23
2 5240.0 E-8 -11 5200.0 E-8 -25
3 3930.0 B-7 -10 3900.0 B-7 -23
4 3144.0 G-7 +4 3120.0 G-7 -9
5 2620.0 E-7 -11 2600.0 E-7 -25
6 2245.7 C#7 +21 2228.6 C#7 +8
7 1965.0 B-6 -9 1950.0 B-6 -23
8 1746.7 A-6 -13 1733.3 A-6 -27
9 1572.0 G-6 +4 1560.0 G-6 -9
10 1429.1 F-6 +39 1418.2 F-6 +25
11 1310.0 E-6 -11 1300.0 E-6 -25
12 1209.2 D-6 +49 1200.0 D-6 +36
13 1122.9 C#6 +22 1114.3 C#6 +8
14 1048.0 C-6 +2 1040.0 C-6 -11
15 982.5 B-5 -10 975.0 B-5 -23
16 924.7 A#5 -15 917.6 A#5 -28
17 873.3 A-5 -14 866.7 A-5 -27
18 827.4 G#5 -7 821.1 G#5 -20
19 786.0 G-5 +4 780.0 G-5 -9
20 748.6 F#5 +20 742.9 F#5 +7
21 714.5 F-5 +39 709.1 F-5 +26
22 683.5 F-5 -38 678.3 E-5 +48
23 655.0 E-5 -12 650.0 E-5 -25
24 628.8 D#5 +18 624.0 D#5 +5
25 604.6 D-5 +49 600.0 D-5 +36
26 582.2 D-5 -16 577.8 D-5 -29
27 561.4 C#5 +21 557.1 C#5 +8
28 542.1 C#5 -40 537.9 C-5 +47
29 524.0 C-5 +2 520.0 C-5 -11
30 507.1 B-4 +45 503.2 B-4 +32
31 491.3 B-4 -9 487.5 B-4 -23

shapes 6, 7, 9, 10

pitch NTSC note cent PAL note cent
0 1014.2 B-5 +45 1006.5 B-5 +32
1 507.1 B-4 +45 503.2 B-4 +32
2 338.1 E-4 +43 335.5 E-4 +30
3 253.5 B-3 +45 251.6 B-3 +32
4 202.8 G#3 -42 201.3 G-3 +45
5 169.0 E-3 +43 167.7 E-3 +30
6 144.9 D-3 -23 143.8 D-3 -37
7 126.8 B-2 +42 125.8 B-2 +32
8 112.7 A-2 +42 111.8 A-2 +28
9 101.4 G#2 -41 100.6 G-2 +45
10 92.2 F#2 -6 91.5 F#2 -19
11 84.5 E-2 +43 83.9 E-2 +31
12 78.0 D#2 +4 77.4 D#2 -9
13 72.4 D-2 -24 71.9 D-2 -37
14 67.6 C#2 -44 67.1 C-2 +44
15 63.4 B-1 +46 62.9 B-1 +32
16 59.7 A#1 +41 59.2 A#1 +26
17 56.3 A-1 +39 55.9 A-1 +27
18 53.4 G#1 +48 53.0 G#1 +35
19 50.7 G#1 -41 50.3 G-1 +45
20 48.3 G-1 -25 47.9 G-1 -39
21 46.1 F#1 -4 45.7 F#1 -20
22 44.1 F-1 +16 43.8 F-1 +4
23 42.3 E-1 +44 41.9 E-1 +28
24 40.6 E-1 -26 40.3 E-1 -39
25 39.0 D#1 +4 38.7 D#1 -9
26 37.6 D-1 +41 37.3 D-1 +27
27 36.2 D-1 -24 35.9 D-1 -38
28 35.0 C#1 +19 34.7 C#1 +5
29 33.8 C#1 -42 33.5 C-1 +42
30 32.7 C-1 0.0 32.5 C-1 -11
31 31.7 B-0 +44 31.5 B-0 +33

shapes 8

pitch NTSC note cent PAL note cent
0 61.5 B-1 -6 61.1 B-1 -18
1 30.8 B-0 -6 30.5 B-0 -22
2 20.5 E-0 -8 20.4 E-0 -17
3 15.4 15.3
4 12.3 12.2
5 10.3 10.2
6 8.8 8.7
7 7.7 7.6
8 6.8 6.8
9 6.2 6.1
10 5.6 5.6
11 5.1 5.1
12 4.7 4.7
13 4.4 4.4
14 4.1 4.1
15 3.8 3.8
16 3.6 3.6
17 3.4 3.4
18 3.2 3.2
19 3.1 3.1
20 2.9 2.9
21 2.8 2.8
22 2.7 2.7
23 2.6 2.5
24 2.5 2.4
25 2.4 2.3
26 2.3 2.3
27 2.2 2.2
28 2.1 2.1
29 2.0 2.0
30 2.0 2.0
31 1.9 1.9

shapes 12, 13

pitch NTSC note cent PAL note cent
0 5240.0 E-8 -11 5200.0 E-8 -25
1 2620.0 E-7 -11 2600.0 E-7 -25
2 1746.6 A-6 -14 1733.3 A-6 -27
3 1310.0 E-6 -11 1300.0 E-6 -25
4 1048.0 C-6 +2 1040.0 C-6 -11
5 873.3 A-5 -14 866.7 A-5 -27
6 748.6 F#5 +20 742.9 F#5 +7
7 655.0 E-5 -12 650.0 E-5 -25
8 582.2 D-5 -16 577.8 D-5 -29
9 524.0 C-5 +2 520.0 C-5 -11
10 476.4 A#4 +39 472.7 A#4 +23
11 436.7 A-4 -13 433.3 A-4 -27
12 403.1 G-4 +48 400.0 G-4 +34
13 374.3 F#4 +20 371.4 F#4 +6
14 349.3 F-4 0.0 346.7 F-4 -13
15 327.5 E-4 -11 325.0 E-4 -25
16 308.2 D#4 -17 305.9 D#4 -30
17 291.1 D-4 -16 288.9 D-4 -29
18 275.8 C#4 -9 273.7 C#4 -22
19 262.0 C-4 +3 260.0 C-4 -11
20 249.5 B-3 +18 247.6 B-3 +5
21 238.2 A#3 +37 236.4 A#3 +24
22 227.8 A#3 -40 226.1 A-3 +47
23 218.3 A-3 -14 216.7 A-3 -27
24 209.6 G#3 +15 208.0 G#3 +2
25 201.5 G-3 +47 200.0 G-3 +34
26 194.1 G-3 -17 192.6 G-3 -31
27 187.1 F#3 +19 185.7 F#3 +6
28 180.7 F#3 -41 179.3 F-3 +45
29 174.7 F-3 +1 173.3 F-3 -13
30 169.0 E-3 +43 167.7 E-3 +30
31 163.8 E-3 -11 162.5 E-3 -25

shapes 14, 15

pitch NTSC note cent PAL note cent
0 338.1 E-4 +43 335.5 E-4 +30
1 169.0 E-3 +43 167.7 E-3 +30
2 112.7 A-2 +42 111.8 A-2 +28
3 84.5 E-2 +43 83.9 E-2 +31
4 67.6 C#2 -44 67.1 C-2 +44
5 56.3 A-1 +39 55.9 A-1 +27
6 48.3 G-1 -25 47.9 G-1 -39
7 42.3 E-1 +44 41.9 E-1 +28
8 37.6 D-1 +41 37.3 D-1 +27
9 33.8 C#1 -42 33.5 C-1 +42
10 30.7 B-0 -11 30.5 B-0 -22
11 28.2 A-0 +44 28.0 A-0 +31
12 26.0 G#0 0.0 25.8 G#0 -13
13 24.1 G-0 -29 24.0 G-0 -36
14 22.5 F#0 -46 22.4 F-0 +46
15 21.1 E-0 +42 21.0 E-0 +33
16 19.9 D#0 +42 19.7 D#0 +25
17 18.8 D-0 +40 18.6 D-0 +20
18 17.8 C#0 +45 17.7 C#0 +36
19 16.9 C#0 -44 16.8 C-0 +44
20 16.1 C-0 -30 16.0 C-0 -40
21 15.4 15.2
22 14.7 14.6
23 14.1 14
24 13.5 13.4
25 13.0 12.9
26 12.5 12.4
27 12.1 12
28 11.7 11.6
29 11.3 11.2
30 10.9 10.8
31 10.6 10.5

reference: Atari 2600 VCS Sound Frequency and Waveform Guide