Based on
- https://pineight.com/mw/index.php?title=Dot_clock_rates
- https://pineight.com/mw/page/50_Hz_dot_clock_rates.xhtml
Frequency | Exact frequency | PAR | Exact PAR | Devices |
---|---|---|---|---|
1.02 MHz | 315/308 MHz | 1.500 | 3:2 | Apple II (GR; each line repeated four times) |
3.58 MHz | 315/88 MHz | 1.714 | 12:7 | Devices with 1 pixel per NTSC subcarrier period: Atari 2600 Atari 7800 Intellivision |
5.37 MHz | 945/176 MHz | 1.143 | 8:7 | The 256px display of the TMS9918 TI-99/4A ColecoVision MSX SG-1000 MSX2 Master System Genesis Game Gear NES TurboGrafx-16 Super NES 256px mode of the original PlayStation |
6.09 MHz | 1071/176 MHz | 1.008 | 120:119 | Nintendo 64 (320px) |
6.14 MHz | 135/22 MHz | 1.000 | 1:1 | Rec. 601 defines the NTSC picture such that this is square on 4:3 monitors |
6.71 MHz | 4725/704 MHz | 0.914 | 32:35 | 320px mode of: Sega Genesis PlayStation |
7.094 MHz | 709379/100000 MHz | 1.03964 | 737500:709379 | Amiga (PAL) |
7.16 MHz | 315/44 MHz | 0.857 | 6:7 | Apple II (40-column text, HGR 280px) TG16 (mid-res, up to 352px) Atari 7800 (hi-res, 320px) Amiga IBM CGA (40-column or 320px) and EGA in 200-line mode (40-column or 320px) Atari 800 |
7.375 MHz | 59/8 MHz | 1.000 | 1:1 | Rec. 601 defines the PAL picture such that this is square on 4:3 monitors |
7.67 MHz | 4725/616 MHz | 0.800 | 4:5 | PlayStation (384px) |
8.19 MHz | 630/77 MHz | 0.750 | 3:4 | Commodore 64 Apple IIGS 4bpp super hi-res (both 320px). Square on widescreen monitors. |
10.74 MHz | 945/88 MHz | 0.571 | 4:7 | Twice the TMS9918 pixel rate produces 512px on Super NES TG16 PlayStation |
13.42 MHz | 4725/352 MHz | 0.457 | 16:35 | PlayStation (640px) |
13.5 MHz | 27/2 MHz | 0.909 | 10:11 | Rec. 601 NTSC |
13.5 MHz | 27/2 MHz | 1.093 | 59:54 | Rec. 601 PAL |
14.32 MHz | 315/22 MHz | 0.429 | 3:7 | Apple II (80-column text, double hi-res) Amiga IBM CGA (80-column) |
16.36 MHz | 1260/77 MHz | 0.375 | 3:8 | Apple IIGS 2bpp super hi-res (640px) |