File:Ntsc video timing.png: Difference between revisions
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(Describe cycle 0 pixel and dot skip pixel) |
m (Gray pulse happens on cycle 327) |
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| Line 5: | Line 5: | ||
** Yellow is the colorburst signal | ** Yellow is the colorburst signal | ||
* Red is the visible output region, including the left and right border | * Red is the visible output region, including the left and right border | ||
** Bright green is the grayscale pulse (at cycle | ** Bright green is the grayscale pulse (at cycle 327) | ||
** Bright red is where the background and sprites are actually visible | ** Bright red is where the background and sprites are actually visible | ||
** The black dot delinates cycle 0 (0, 0) according to the [https://www.nesdev.org/wiki/File:Ppu.svg PPU Frame Timing Diagram] | ** The black dot delinates cycle 0 (0, 0) according to the [https://www.nesdev.org/wiki/File:Ppu.svg PPU Frame Timing Diagram] | ||
Revision as of 08:58, 11 April 2023
A visualization of the NTSC PPU's video output signal, using different colors to denote each part of the signal.
- Cyan is the horizontal blanking pulse
- Dark blue is the "back porch" after HBlank
- Yellow is the colorburst signal
- Red is the visible output region, including the left and right border
- Bright green is the grayscale pulse (at cycle 327)
- Bright red is where the background and sprites are actually visible
- The black dot delinates cycle 0 (0, 0) according to the PPU Frame Timing Diagram
- Orange is the "front porch" before HBlank
- Magenta is the vertical blanking pulse
- Dark green is the surrounding vertical blanking region (and the sync separator)
- The orange dot indicates when the PPU skips a dot on odd frames (339, 261)
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:57, 11 April 2023 |  | 341 × 262 (1 KB) | Persune (talk | contribs) | PPU dot skipped is off by 1 scanline |
| 08:09, 11 April 2023 |  | 341 × 262 (1 KB) | Persune (talk | contribs) | Remove uneccesary indicators; add cycle 0 dot indicator; fix dot skip indicator | |
| 21:56, 21 September 2021 |  | 405 × 326 (3 KB) | >Maintenance script | == Summary == Importing file |
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