CGA/EGA/VGA/SVGA/MAC/8514 - Videofrekvenser ------------------------------------------- .--. .--´ | .--´ | A: Front Porch .--´ | B: Sync Period --. .--´ | .--- - C: Back Porch | | Video-signal | | |V D: Blanking period `------´ `-----´ - E: Display Period |--D---|----E---------| F: Total Cycle S: Sync Signal Level |A|B-|C| V: Video signal level ----. .-----------------. .---- - | | H-sync / V-sync | | |S `--´ `--´ - |---------F----------| Horisontell(Linje) | Vertikal(Bild) us dots | ms linjer ---------------------------------------------------------------------------- VGA Grafik 640x480 A: 0.636 16 | 0.318 10 Freq.H: 31.468 kHz B: 3.813 96 | 0.064 2 V: 59.941 Hz Non-IL C: 1.907 48 | 1.048 33 dot: 25.175 MHz D: 6.356 160 | 1.430 45 Sync: H=neg V=neg E: 25.422 640 | 15.254 480 V.level: 0.7V p-p 75ohm F: 31.788 800 | 16.683 525 ---------------------------------------------------------------------------- VGA Text 720x400 A: 0.636 16 | 0.381 12 Freq.H: 31.468 kHz B: 3.813 108 | 0.064 2 V: 70.087 Hz Non-IL C: 1.907 54 | 1.111 35 dot: 28.322 MHz D: 6.356 180 | 1.556 49 Sync: H=neg V=pos E: 25.422 720 | 12.712 400 V.level: 0.7V p-p 75ohm F: 31.778 900 | 14.268 449 ---------------------------------------------------------------------------- VGA Grafik 640x350 A: 0.636 16 | 1.175 10 Freq.H: 31.468 kHz B: 3.813 96 | 0.064 2 V: 70.087 HZ Non-IL C: 1.907 48 | 1.906 60 dot: 25.175 MHz D: 6.356 160 | 3.145 99 Sync: H=pos V=pos E: 25.422 640 | 11.124 350 V.level: 0.7V p-p 75ohm F: 31.788 800 | 14.268 449 ---------------------------------------------------------------------------- SVGA Grafik 800x600 A: 0.19 7 | 0.05 2 Freq.H: 36.0 kHz B: 1.12 40 | 0.33 12 V: 58.15 HZ Non-IL C: 4.25 153 | 0.14 5 dot: 36 MHz D: 5.56 200 | 0.52 19 Sync: H=neg V=neg E: 22.22 800 | 16.67 600 V.level: 0.7V p-p 75ohm F: 27.78 1000 | 17.19 619 ---------------------------------------------------------------------------- SVGA Grafik 1024x768 A: 0.615 40 | 0.204 10 Freq.H: 48.946 kHz B: 1.723 112 | 0.306 15 V: 60.50 HZ Non-IL C: 2.338 152 | 0.327 16 dot: 65 MHz D: 4.677 304 | 0.838 41 Sync: H=pos V=pos E: 12.75 1024 | 15.69 768 V.level: 0.7V p-p 75ohm F: 20.43 1328 | 16.53 809 ---------------------------------------------------------------------------- SVGA High-refresh Graf.1024x768 A: 0.775 62 | 0.151 9 Freq.H: 59.524 kHz B: 1.6 128 | 0.084 5 V: 73.486 HZ Non-IL C: 1.625 130 | 0.47 28 dot: 80 MHz D: 4.00 320 | 0.706 42 Sync: H=neg V=neg E: 12.80 1024 | 12.902 768 V.level: 0.7V p-p 75ohm F: 16.80 1344 | 13.608 810 ---------------------------------------------------------------------------- SVGA Grafik 1280x1024 A: 0.296 32 | 0.124 8 Freq.H: 64.286 kHz B: 0.593 64 | 0.078 5 V: 60.136 HZ Non-IL C: 2.815 304 | 0.498 32 dot: 108 MHz D: 3.704 400 | 0.700 45 Sync: Comp on green (neg0.3V) E: 11.852 1280 | 15.929 1024 V.level: 0.7V p-p 75ohm F: 15.556 1680 | 16.629 1069 ---------------------------------------------------------------------------- SVGA High-refresh Graf.1280x1024 A: 0.253 32 | 0.106 8 Freq.H: 75.296 kHz B: 0.506 64 | 0.066 5 V: 70.296 HZ Non-IL C: 2.403 304 | 0.425 32 dot: 126.5 MHz D: 3.162 400 | 0.597 45 Sync: Comp on green (neg0.3V) E: 10.119 1280 | 13.599 1024 V.level: 0.7V p-p 75ohm F: 13.281 1680 | 14.197 1069 ---------------------------------------------------------------------------- Apple MAC II 640x480 A: 2.116 64 | 0.086 3 Freq.H: 35 kHz B: 2.116 64 | 0.086 3 V: 66.67 HZ Non-IL C: 3.175 96 | 1.114 39 dot: 30.24 MHz D: 7.41 224 | 1.28 45 Sync: Comp on green (neg0.3V) E: 21.164 640 | 13.714 480 V.level: 0.7V p-p 75ohm F: 28.571 864 | 15.000 525 ---------------------------------------------------------------------------- IBM 8514/A 1024x768 A: 0.178 8 | 0 0 Freq.H: 35.55 kHz B: 3.898 175 | 0.104 4 V: 86.92 HZ Interlaced C: 1.247 56 | 0.546 21 dot: 44.9 MHz D: 5.323 239 | 0.65 25 Sync: H=pos V=pos E: 22.806 1024 | 9.981 384 V.level: 0.7V p-p 75ohm F: 28.129 1263 | 11.505 409 ---------------------------------------------------------------------------- CGA 320x200 A: 6.6 | 25 Freq.H: 15.7 kHz B: 4.6 | 3 V: 60 HZ Interlaced C: 8.1 | 34 dot: D: 19.3 | 62 Sync: H=pos V=pos E: 44.4 320 | 200 V.level: TTL F: 63.7 | 262 ---------------------------------------------------------------------------- EGA 640x350 A: 0 | 0 Freq.H: 21.85 kHz B: 4.9 | 13 V: 60 HZ Interlaced C: 1.6 | 3 dot: D: 6.5 | 16 Sync: H=pos V=neg E: 39.9 640 | 350 V.level: TTL F: 45.8 | 366 ---------------------------------------------------------------------------- - Tomas Andersson 1993-10-26