User contributions for Persune

10:2610:26, 8 March 2023 diff hist +107‎ m NTSC video ‎ Add link to FCC-sanctioned YIQ to RGB conversion base equations
10:1910:19, 8 March 2023 diff hist +3,241‎ NTSC video ‎ Add section for composite video decoding

11:0611:06, 27 February 2023 diff hist −210‎ NTSC video ‎ Plot example waveform via PPUPlayer's video signal dump
11:0311:03, 27 February 2023 diff hist 0‎ File:Composite waveform example.gif ‎ Persune uploaded a new version of File:Composite waveform example.gif current
04:3304:33, 27 February 2023 diff hist +193‎ m File:Composite waveform example.gif ‎ Add details about plot
04:2704:27, 27 February 2023 diff hist +524‎ N File:Composite waveform example.gif ‎ This waveform steps through various grays and then stops on a color. Based on the original ASCII art of the example composite waveform. https://www.nesdev.org/wiki/NTSC_video#Example_Waveform The composite signal steps through 6 gray colors ($0D, $0F, $2D, $00, $10, $30) then continues through with color $11. [https://github.com/Gumball2415/nes-scribbles/tree/main/nrom-composite-waveform Source code for the underlying demo rom], and this work is licensed under the [https://mit-license.org...

19:4519:45, 26 February 2023 diff hist +9‎ NTSC video ‎ Animate "ragged" NTSC demodulation illustration
19:0719:07, 26 February 2023 diff hist +571‎ N File:NTSC video ragged box animated.gif ‎ Animated version of https://www.nesdev.org/wiki/File:NTSC_video_ragged_box.png. The second frame is made by offsetting the frame by 1 "scanline". The filter is replicated as two Convolution Matrix passes in linear light space using GIMP 2.10.32. The kernels used are [1 1 0 1 1] and [1 3 4 3 1] respectively. After filtering the resulting kernels, an approximate 2.4 gamma curve is applied using the Levels tool, setting the middle slider to 1/2.4 (approx. 0.42). This derivative work is also... current

15:5415:54, 18 September 2022 diff hist −1‎ m NES cartridge dimensions ‎ Fix designator references
15:5315:53, 18 September 2022 diff hist 0‎ File:NES-EWROM-01.svg ‎ Persune uploaded a new version of File:NES-EWROM-01.svg
15:4915:49, 18 September 2022 diff hist −28‎ m NES cartridge dimensions ‎ Remove nonexistent reference
15:4015:40, 18 September 2022 diff hist +258‎ m NES cartridge dimensions ‎ Add introduction
15:3415:34, 18 September 2022 diff hist +23‎ m Famicom cartridge dimensions ‎ Add category current
15:3415:34, 18 September 2022 diff hist +1,284‎ NES cartridge dimensions ‎ Add measurements for the nearly the rest of the cartridge types
15:2215:22, 18 September 2022 diff hist +135‎ N File:NES-EWROM-01.svg ‎ Technical drawing of the outlines of an NES-EWROM-01 type cartridge PCB. Dimensions described in corresponding wiki page.

19:2819:28, 26 December 2021 diff hist 0‎ m Famicom cartridge dimensions ‎ →‎HVC-NROM/CNROM: typo in dimensions
01:1601:16, 26 December 2021 diff hist +1,706‎ Famicom cartridge dimensions ‎ Add HVC-NROM/CxROM type cartridge PCB
00:5700:57, 26 December 2021 diff hist +338‎ N File:HVC-CNROM-256K-01-board.svg ‎ Technical drawing of the outlines of an HVC-CNROM-256K-01 type cartridge PCB with augmented dimensions to fill up the space of a short cartridge shell, using measurements from an HVC-TGROM-01 type cartridge PCB. Dimensions described in corresponding wiki page. https://github.com/Gumball2415/NES-Famicom-Cartridge-Dimensions

09:0809:08, 7 December 2021 diff hist +2,499‎ VRC7 pinout ‎ Added expansion audio circuit schematic.

18:0418:04, 1 December 2021 diff hist −8‎ m VRC6 pinout ‎ fix broken link
17:5717:57, 1 December 2021 diff hist +885‎ VRC6 pinout ‎ Added expansion audio circuit schematic.
05:3905:39, 1 December 2021 diff hist +33‎ m RP2C33 pinout ‎ Added value of feedback resistor in first amplifier.
05:3505:35, 1 December 2021 diff hist +754‎ Sunsoft 5 pinout ‎ Added expansion audio mixing circuit.
02:3502:35, 1 December 2021 diff hist +4‎ m Namcot 163 family pinout ‎ whitespace word-wrap adjust
02:3002:30, 1 December 2021 diff hist +971‎ RP2C33 pinout ‎ Added expansion audio mixing circuit.
00:0000:00, 1 December 2021 diff hist +1,023‎ Namcot 163 family pinout ‎ Added expansion audio circuit schematic

21:2821:28, 9 November 2021 diff hist +203‎ N File:HVC-TGROM-01-card-edge.svg ‎ Outlines of a Famicom 60 pin card edge connector, based on a HVC-TGROM-01 type cartridge PCB; dimensions expressed in inches. https://github.com/Gumball2415/NES-Famicom-Cartridge-Dimensions current
21:2621:26, 9 November 2021 diff hist +157‎ N File:HVC-TGROM-01-board.svg ‎ Outlines of an HVC-TGROM-01 type cartridge PCB, dimensions expressed in inches. https://github.com/Gumball2415/NES-Famicom-Cartridge-Dimensions

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