These tables show the percentage of cycles available to the CPU for various ANTIC modes of varying heights. The normalized tables show the percentage relative to the number of available cycles minus the DRAM refresh cycles which cannot be disabled except on text-mode bad-lines. See calc.pl for the math used to generate the tables. The calculations include the following cases where the CPU is halted:
- DRAM refresh cycles (9 per scanline except for text-mode bad-lines)
- Blank cycles (1 per group of 8 blank lines in top border, usually 3)
- LMS cycles (3 per 4K of bitmap data)
- Modeline cycles (1 per mode line that's not an LMS)
- Symbol cycles (1 per text-mode column)
- Bitmap cycles (1 per byte for graphics, 8 per text-mode column, 10 for mode 3)
- Jump cycles (3 unless display list spans all 240 visible scanlines)
PAL
---
Mode 2 3 4 5 6 7 8 9 A B C D E F
Lines ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
0 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1
1 91.1 90.9 91.1 90.2 91.6 91.1 92.1 92.1 92.0 92.0 92.0 92.0 92.0 92.0
2 90.1 89.7 90.1 88.3 91.1 90.2 92.0 92.0 92.0 92.0 92.0 91.9 91.9 91.9
3 89.1 88.4 89.1 86.4 90.6 89.2 92.0 92.0 91.9 91.9 91.9 91.7 91.7 91.7
4 88.1 87.2 88.1 84.5 90.1 88.3 92.0 92.0 91.9 91.9 91.9 91.6 91.6 91.6
5 87.1 86.0 87.1 82.6 89.5 87.3 91.9 91.9 91.8 91.8 91.8 91.5 91.5 91.5
6 86.2 84.8 86.2 80.8 89.0 86.3 91.9 91.9 91.7 91.7 91.7 91.4 91.4 91.4
7 85.2 83.6 85.2 78.9 88.5 85.4 91.9 91.9 91.7 91.7 91.7 91.3 91.3 91.3
8 84.2 82.4 84.2 77.0 88.0 84.4 91.8 91.8 91.6 91.6 91.6 91.2 91.2 91.2
9 83.2 81.2 83.2 75.1 87.5 83.5 91.8 91.8 91.6 91.6 91.6 91.1 91.1 91.1
10 82.2 79.9 82.2 73.2 87.0 82.5 91.8 91.8 91.5 91.5 91.5 90.9 90.9 90.9
11 81.2 78.7 81.2 71.3 86.5 81.5 91.7 91.7 91.4 91.4 91.4 90.8 90.8 90.8
12 80.2 77.5 80.2 69.4 86.0 80.6 91.7 91.7 91.4 91.4 91.4 90.7 90.7 90.7
13 79.2 76.3 79.2 67.5 85.5 79.6 91.7 91.7 91.3 91.3 91.3 90.6 90.6 90.6
14 78.2 75.1 78.2 65.6 85.0 78.7 91.7 91.7 91.3 91.3 91.3 90.5 90.5 90.5
15 77.2 73.9 77.2 63.8 84.5 77.7 91.6 91.6 91.2 91.2 91.2 90.4 90.4 90.4
16 76.3 72.7 76.3 - 83.9 - 91.6 91.6 91.1 91.1 91.1 90.2 90.2 90.2
17 75.3 71.4 75.3 - 83.4 - 91.6 91.6 91.1 91.1 91.1 90.1 90.1 90.1
18 74.3 70.2 74.3 - 82.9 - 91.5 91.5 91.0 91.0 91.0 90.0 90.0 90.0
19 73.3 69.0 73.3 - 82.4 - 91.5 91.5 91.0 91.0 91.0 89.9 89.9 89.9
20 72.3 67.8 72.3 - 81.9 - 91.5 91.5 90.9 90.9 90.9 89.8 89.8 89.8
21 71.3 66.6 71.3 - 81.4 - 91.4 91.4 90.8 90.8 90.8 89.7 89.7 89.7
22 70.3 65.4 70.3 - 80.9 - 91.4 91.4 90.8 90.8 90.8 89.6 89.6 89.6
23 69.3 64.2 69.3 - 80.4 - 91.4 91.4 90.7 90.7 90.7 89.4 89.4 89.4
24 68.3 63.0 68.3 - 79.9 - 91.3 91.3 90.7 90.7 90.7 89.3 89.3 89.3
25 67.3 - 67.3 - 79.4 - 91.3 91.3 90.6 90.6 90.6 89.2 89.2 89.2
26 66.4 - 66.4 - 78.9 - 91.3 91.3 90.6 90.6 90.6 89.1 89.1 89.1
27 65.4 - 65.4 - 78.3 - 91.3 91.3 90.5 90.5 90.5 89.0 89.0 89.0
28 64.4 - 64.4 - 77.8 - 91.2 91.2 90.4 90.4 90.4 88.9 88.9 88.9
29 63.4 - 63.4 - 77.3 - 91.2 91.2 90.4 90.4 90.4 88.7 88.7 88.7
30 62.4 - 62.4 - 76.8 - 91.2 91.2 90.3 90.3 90.3 88.6 88.6 88.6
40 - - - - - - - 90.9 89.7 89.7 89.7 87.5 87.5 87.5
50 - - - - - - - 90.5 89.1 89.1 89.1 86.3 86.3 86.3
60 - - - - - - - 90.2 88.6 88.5 88.5 85.2 85.2 85.2
70 - - - - - - - - - 88.0 88.0 84.0 84.0 84.0
80 - - - - - - - - - 87.4 87.4 82.9 82.9 82.9
90 - - - - - - - - - 86.8 86.8 81.7 81.7 81.7
100 - - - - - - - - - 86.2 86.2 80.6 80.6 80.6
110 - - - - - - - - - 85.6 85.6 79.4 79.4 79.4
120 - - - - - - - - - 85.0 85.0 78.3 78.3 78.3
130 - - - - - - - - - - 84.4 - 77.1 77.1
140 - - - - - - - - - - 83.8 - 76.0 76.0
150 - - - - - - - - - - 83.2 - 74.8 74.8
160 - - - - - - - - - - 82.6 - 73.6 73.6
170 - - - - - - - - - - 82.1 - 72.5 72.5
180 - - - - - - - - - - 81.5 - 71.3 71.3
190 - - - - - - - - - - 80.9 - 70.2 70.2
200 - - - - - - - - - - 80.3 - 69.0 69.0
210 - - - - - - - - - - 79.7 - 67.9 67.9
220 - - - - - - - - - - 79.1 - 66.7 66.7
230 - - - - - - - - - - 78.5 - 65.6 65.6
240 - - - - - - - - - - 77.9 - 64.4 64.4
PAL normalized
--------------
Mode 2 3 4 5 6 7 8 9 A B C D E F
Lines ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
1 98.9 98.7 98.9 97.9 99.4 98.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9
2 97.8 97.3 97.8 95.9 98.9 97.9 99.9 99.9 99.9 99.9 99.9 99.7 99.7 99.7
3 96.8 96.0 96.8 93.8 98.3 96.9 99.9 99.9 99.8 99.8 99.8 99.6 99.6 99.6
4 95.7 94.7 95.7 91.8 97.8 95.8 99.8 99.8 99.7 99.7 99.7 99.5 99.5 99.5
5 94.6 93.4 94.6 89.7 97.2 94.8 99.8 99.8 99.7 99.7 99.7 99.4 99.4 99.4
6 93.5 92.1 93.5 87.7 96.7 93.7 99.8 99.8 99.6 99.6 99.6 99.2 99.2 99.2
7 92.5 90.8 92.5 85.6 96.1 92.7 99.7 99.7 99.5 99.5 99.5 99.1 99.1 99.1
8 91.4 89.4 91.4 83.6 95.6 91.7 99.7 99.7 99.5 99.5 99.5 99.0 99.0 99.0
9 90.3 88.1 90.3 81.5 95.0 90.6 99.7 99.7 99.4 99.4 99.4 98.9 98.9 98.9
10 89.2 86.8 89.2 79.5 94.5 89.6 99.6 99.6 99.3 99.3 99.3 98.7 98.7 98.7
11 88.2 85.5 88.2 77.4 93.9 88.5 99.6 99.6 99.3 99.3 99.3 98.6 98.6 98.6
12 87.1 84.2 87.1 75.4 93.4 87.5 99.6 99.6 99.2 99.2 99.2 98.5 98.5 98.5
13 86.0 82.8 86.0 73.3 92.8 86.4 99.5 99.5 99.1 99.1 99.1 98.4 98.4 98.4
14 84.9 81.5 84.9 71.3 92.2 85.4 99.5 99.5 99.1 99.1 99.1 98.2 98.2 98.2
15 83.9 80.2 83.9 69.2 91.7 84.4 99.5 99.5 99.0 99.0 99.0 98.1 98.1 98.1
16 82.8 78.9 82.8 - 91.1 - 99.4 99.4 99.0 99.0 99.0 98.0 98.0 98.0
17 81.7 77.6 81.7 - 90.6 - 99.4 99.4 98.9 98.9 98.9 97.9 97.9 97.9
18 80.6 76.2 80.6 - 90.0 - 99.4 99.4 98.8 98.8 98.8 97.7 97.7 97.7
19 79.6 74.9 79.6 - 89.5 - 99.3 99.3 98.8 98.8 98.8 97.6 97.6 97.6
20 78.5 73.6 78.5 - 88.9 - 99.3 99.3 98.7 98.7 98.7 97.5 97.5 97.5
21 77.4 72.3 77.4 - 88.4 - 99.3 99.3 98.6 98.6 98.6 97.4 97.4 97.4
22 76.3 71.0 76.3 - 87.8 - 99.2 99.2 98.6 98.6 98.6 97.2 97.2 97.2
23 75.3 69.7 75.3 - 87.3 - 99.2 99.2 98.5 98.5 98.5 97.1 97.1 97.1
24 74.2 68.4 74.2 - 86.7 - 99.2 99.2 98.4 98.4 98.4 97.0 97.0 97.0
25 73.1 - 73.1 - 86.2 - 99.1 99.1 98.4 98.4 98.4 96.9 96.9 96.9
26 72.0 - 72.0 - 85.6 - 99.1 99.1 98.3 98.3 98.3 96.7 96.7 96.7
27 71.0 - 71.0 - 85.1 - 99.1 99.1 98.3 98.3 98.3 96.6 96.6 96.6
28 69.9 - 69.9 - 84.5 - 99.0 99.0 98.2 98.2 98.2 96.5 96.5 96.5
29 68.8 - 68.8 - 84.0 - 99.0 99.0 98.1 98.1 98.1 96.4 96.4 96.4
30 67.8 - 67.8 - 83.4 - 99.0 99.0 98.1 98.1 98.1 96.2 96.2 96.2
40 - - - - - - - 98.6 97.4 97.4 97.4 95.0 95.0 95.0
50 - - - - - - - 98.3 96.8 96.8 96.8 93.7 93.7 93.7
60 - - - - - - - 98.0 96.2 96.1 96.1 92.5 92.5 92.5
70 - - - - - - - - - 95.5 95.5 91.2 91.2 91.2
80 - - - - - - - - - 94.9 94.9 90.0 90.0 90.0
90 - - - - - - - - - 94.2 94.2 88.7 88.7 88.7
100 - - - - - - - - - 93.6 93.6 87.5 87.5 87.5
110 - - - - - - - - - 92.9 92.9 86.2 86.2 86.2
120 - - - - - - - - - 92.3 92.3 85.0 85.0 85.0
130 - - - - - - - - - - 91.6 - 83.7 83.7
140 - - - - - - - - - - 91.0 - 82.5 82.5
150 - - - - - - - - - - 90.4 - 81.2 81.2
160 - - - - - - - - - - 89.7 - 80.0 80.0
170 - - - - - - - - - - 89.1 - 78.7 78.7
180 - - - - - - - - - - 88.4 - 77.5 77.5
190 - - - - - - - - - - 87.8 - 76.2 76.2
200 - - - - - - - - - - 87.2 - 75.0 75.0
210 - - - - - - - - - - 86.5 - 73.7 73.7
220 - - - - - - - - - - 85.9 - 72.5 72.5
230 - - - - - - - - - - 85.2 - 71.2 71.2
240 - - - - - - - - - - 84.6 - 70.0 70.0
NTSC
----
Mode 2 3 4 5 6 7 8 9 A B C D E F
Lines ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
0 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1 92.1
1 90.9 90.6 90.9 89.8 91.5 90.9 92.0 92.0 92.0 92.0 92.0 91.9 91.9 91.9
2 89.7 89.2 89.7 87.6 90.9 89.8 92.0 92.0 91.9 91.9 91.9 91.8 91.8 91.8
3 88.5 87.7 88.5 85.3 90.3 88.7 92.0 92.0 91.9 91.9 91.9 91.7 91.7 91.7
4 87.4 86.3 87.4 83.1 89.7 87.5 91.9 91.9 91.8 91.8 91.8 91.5 91.5 91.5
5 86.2 84.9 86.2 80.8 89.1 86.4 91.9 91.9 91.7 91.7 91.7 91.4 91.4 91.4
6 85.0 83.4 85.0 78.6 88.4 85.2 91.9 91.9 91.7 91.7 91.7 91.3 91.3 91.3
7 83.8 82.0 83.8 76.3 87.8 84.1 91.8 91.8 91.6 91.6 91.6 91.1 91.1 91.1
8 82.7 80.5 82.7 74.1 87.2 83.0 91.8 91.8 91.5 91.5 91.5 91.0 91.0 91.0
9 81.5 79.1 81.5 71.8 86.6 81.8 91.8 91.8 91.5 91.5 91.5 90.8 90.8 90.8
10 80.3 77.6 80.3 69.6 86.0 80.7 91.7 91.7 91.4 91.4 91.4 90.7 90.7 90.7
11 79.1 76.2 79.1 67.3 85.4 79.5 91.7 91.7 91.3 91.3 91.3 90.6 90.6 90.6
12 77.9 74.7 77.9 65.1 84.8 78.4 91.6 91.6 91.2 91.2 91.2 90.4 90.4 90.4
13 76.8 73.3 76.8 62.8 84.2 77.2 91.6 91.6 91.2 91.2 91.2 90.3 90.3 90.3
14 75.6 71.8 75.6 60.6 83.6 76.1 91.6 91.6 91.1 91.1 91.1 90.2 90.2 90.2
15 74.4 70.4 74.4 58.4 83.0 75.0 91.5 91.5 91.0 91.0 91.0 90.0 90.0 90.0
16 73.2 68.9 73.2 - 82.4 - 91.5 91.5 91.0 91.0 91.0 89.9 89.9 89.9
17 72.1 67.5 72.1 - 81.8 - 91.5 91.5 90.9 90.9 90.9 89.8 89.8 89.8
18 70.9 66.1 70.9 - 81.2 - 91.4 91.4 90.8 90.8 90.8 89.6 89.6 89.6
19 69.7 64.6 69.7 - 80.6 - 91.4 91.4 90.7 90.7 90.7 89.5 89.5 89.5
20 68.5 63.2 68.5 - 80.0 - 91.3 91.3 90.7 90.7 90.7 89.3 89.3 89.3
21 67.3 61.7 67.3 - 79.4 - 91.3 91.3 90.6 90.6 90.6 89.2 89.2 89.2
22 66.2 60.3 66.2 - 78.8 - 91.3 91.3 90.5 90.5 90.5 89.1 89.1 89.1
23 65.0 58.8 65.0 - 78.1 - 91.2 91.2 90.5 90.5 90.5 88.9 88.9 88.9
24 63.8 57.4 63.8 - 77.5 - 91.2 91.2 90.4 90.4 90.4 88.8 88.8 88.8
25 62.6 - 62.6 - 76.9 - 91.2 91.2 90.3 90.3 90.3 88.7 88.7 88.7
26 61.4 - 61.4 - 76.3 - 91.1 91.1 90.3 90.3 90.3 88.5 88.5 88.5
27 60.3 - 60.3 - 75.7 - 91.1 91.1 90.2 90.2 90.2 88.4 88.4 88.4
28 59.1 - 59.1 - 75.1 - 91.1 91.1 90.1 90.1 90.1 88.2 88.2 88.2
29 57.9 - 57.9 - 74.5 - 91.0 91.0 90.0 90.0 90.0 88.1 88.1 88.1
30 56.7 - 56.7 - 73.9 - 91.0 91.0 90.0 90.0 90.0 88.0 88.0 88.0
40 - - - - - - - 90.6 89.3 89.3 89.3 86.6 86.6 86.6
50 - - - - - - - 90.2 88.6 88.6 88.6 85.2 85.2 85.2
60 - - - - - - - 89.9 87.9 87.9 87.9 83.8 83.8 83.8
70 - - - - - - - - - 87.2 87.2 82.5 82.5 82.5
80 - - - - - - - - - 86.5 86.5 81.1 81.1 81.1
90 - - - - - - - - - 85.8 85.8 79.7 79.7 79.7
100 - - - - - - - - - 85.1 85.1 78.4 78.4 78.4
110 - - - - - - - - - 84.4 84.4 77.0 77.0 77.0
120 - - - - - - - - - 83.7 83.6 75.6 75.6 75.6
130 - - - - - - - - - - 82.9 - 74.2 74.2
140 - - - - - - - - - - 82.2 - 72.9 72.9
150 - - - - - - - - - - 81.5 - 71.5 71.5
160 - - - - - - - - - - 80.8 - 70.1 70.1
170 - - - - - - - - - - 80.1 - 68.7 68.7
180 - - - - - - - - - - 79.4 - 67.4 67.4
190 - - - - - - - - - - 78.7 - 66.0 66.0
200 - - - - - - - - - - 78.0 - 64.6 64.6
210 - - - - - - - - - - 77.3 - 63.3 63.3
220 - - - - - - - - - - 76.6 - 61.9 61.9
230 - - - - - - - - - - 75.9 - 60.5 60.5
240 - - - - - - - - - - 75.2 - 59.2 59.2
NTSC normalized
---------------
Mode 2 3 4 5 6 7 8 9 A B C D E F
Lines ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
1 98.7 98.4 98.7 97.5 99.3 98.7 99.9 99.9 99.9 99.9 99.9 99.8 99.8 99.8
2 97.4 96.8 97.4 95.1 98.7 97.5 99.9 99.9 99.8 99.8 99.8 99.7 99.7 99.7
3 96.1 95.3 96.1 92.6 98.0 96.3 99.9 99.9 99.7 99.7 99.7 99.5 99.5 99.5
4 94.9 93.7 94.9 90.2 97.3 95.0 99.8 99.8 99.7 99.7 99.7 99.4 99.4 99.4
5 93.6 92.1 93.6 87.8 96.7 93.8 99.8 99.8 99.6 99.6 99.6 99.2 99.2 99.2
6 92.3 90.6 92.3 85.3 96.0 92.5 99.7 99.7 99.5 99.5 99.5 99.1 99.1 99.1
7 91.0 89.0 91.0 82.9 95.4 91.3 99.7 99.7 99.4 99.4 99.4 98.9 98.9 98.9
8 89.7 87.4 89.7 80.4 94.7 90.1 99.7 99.7 99.4 99.4 99.4 98.8 98.8 98.8
9 88.5 85.8 88.5 78.0 94.1 88.8 99.6 99.6 99.3 99.3 99.3 98.6 98.6 98.6
10 87.2 84.3 87.2 75.6 93.4 87.6 99.6 99.6 99.2 99.2 99.2 98.5 98.5 98.5
11 85.9 82.7 85.9 73.1 92.7 86.3 99.5 99.5 99.1 99.1 99.1 98.3 98.3 98.3
12 84.6 81.1 84.6 70.7 92.1 85.1 99.5 99.5 99.1 99.1 99.1 98.2 98.2 98.2
13 83.3 79.6 83.3 68.2 91.4 83.9 99.5 99.5 99.0 99.0 99.0 98.0 98.0 98.0
14 82.1 78.0 82.1 65.8 90.8 82.6 99.4 99.4 98.9 98.9 98.9 97.9 97.9 97.9
15 80.8 76.4 80.8 63.4 90.1 81.4 99.4 99.4 98.8 98.8 98.8 97.7 97.7 97.7
16 79.5 74.9 79.5 - 89.5 - 99.3 99.3 98.8 98.8 98.8 97.6 97.6 97.6
17 78.2 73.3 78.2 - 88.8 - 99.3 99.3 98.7 98.7 98.7 97.4 97.4 97.4
18 76.9 71.7 76.9 - 88.1 - 99.3 99.3 98.6 98.6 98.6 97.3 97.3 97.3
19 75.7 70.1 75.7 - 87.5 - 99.2 99.2 98.5 98.5 98.5 97.1 97.1 97.1
20 74.4 68.6 74.4 - 86.8 - 99.2 99.2 98.5 98.5 98.5 97.0 97.0 97.0
21 73.1 67.0 73.1 - 86.2 - 99.1 99.1 98.4 98.4 98.4 96.8 96.8 96.8
22 71.8 65.4 71.8 - 85.5 - 99.1 99.1 98.3 98.3 98.3 96.7 96.7 96.7
23 70.5 63.9 70.5 - 84.8 - 99.1 99.1 98.2 98.2 98.2 96.6 96.6 96.6
24 69.3 62.3 69.3 - 84.2 - 99.0 99.0 98.1 98.1 98.1 96.4 96.4 96.4
25 68.0 - 68.0 - 83.5 - 99.0 99.0 98.1 98.1 98.1 96.3 96.3 96.3
26 66.7 - 66.7 - 82.9 - 98.9 98.9 98.0 98.0 98.0 96.1 96.1 96.1
27 65.4 - 65.4 - 82.2 - 98.9 98.9 97.9 97.9 97.9 96.0 96.0 96.0
28 64.2 - 64.2 - 81.6 - 98.9 98.9 97.8 97.8 97.8 95.8 95.8 95.8
29 62.9 - 62.9 - 80.9 - 98.8 98.8 97.8 97.8 97.8 95.7 95.7 95.7
30 61.6 - 61.6 - 80.3 - 98.8 98.8 97.7 97.7 97.7 95.5 95.5 95.5
40 - - - - - - - 98.4 96.9 96.9 96.9 94.0 94.0 94.0
50 - - - - - - - 98.0 96.2 96.2 96.2 92.5 92.5 92.5
60 - - - - - - - 97.6 95.4 95.4 95.4 91.0 91.0 91.0
70 - - - - - - - - - 94.6 94.6 89.5 89.5 89.5
80 - - - - - - - - - 93.9 93.9 88.1 88.1 88.1
90 - - - - - - - - - 93.1 93.1 86.6 86.6 86.6
100 - - - - - - - - - 92.3 92.3 85.1 85.1 85.1
110 - - - - - - - - - 91.6 91.6 83.6 83.6 83.6
120 - - - - - - - - - 90.8 90.8 82.1 82.1 82.1
130 - - - - - - - - - - 90.1 - 80.6 80.6
140 - - - - - - - - - - 89.3 - 79.1 79.1
150 - - - - - - - - - - 88.5 - 77.6 77.6
160 - - - - - - - - - - 87.8 - 76.1 76.1
170 - - - - - - - - - - 87.0 - 74.6 74.6
180 - - - - - - - - - - 86.2 - 73.2 73.2
190 - - - - - - - - - - 85.5 - 71.7 71.7
200 - - - - - - - - - - 84.7 - 70.2 70.2
210 - - - - - - - - - - 83.9 - 68.7 68.7
220 - - - - - - - - - - 83.2 - 67.2 67.2
230 - - - - - - - - - - 82.4 - 65.7 65.7
240 - - - - - - - - - - 81.7 - 64.2 64.2