User contributions for Persune
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2 May 2024
- 16:4216:42, 2 May 2024 diff hist +156 FDS audio Undo revision 21796 by Persune (talk), clarify that frequency is per update tick, not per period current
- 16:3716:37, 2 May 2024 diff hist 0 FDS audio →Wavetables: Correct wave frequency formulas
- 13:4713:47, 2 May 2024 diff hist −22 m FDS audio →Modulation unit: Remove stray draft notes
20 April 2024
- 14:3814:38, 20 April 2024 diff hist +148 m Talk:Family Computer Disk System →FDS: comment about FDS DAC schematics
- 11:1811:18, 20 April 2024 diff hist +1,887 FDS audio Update sections on modulation/wavetable functions, volume gain is confirmed to be PWM
30 March 2024
- 08:4708:47, 30 March 2024 diff hist −19 m NTSC video Emulating in C++ code: Declare InColorPhase() lambda before use
29 March 2024
- 05:3805:38, 29 March 2024 diff hist −123 NTSC video Emulating in C++ code: change YIQ nomenclature to YUV; add 2x factor to QAM decoding
- 05:2205:22, 29 March 2024 diff hist −36 m NTSC video Black/White level variables declared but not used in NTSCsignal()?
3 March 2024
- 06:5006:50, 3 March 2024 diff hist +155 m NTSC video Fix IQ-UV matrix rotation and add citation
29 February 2024
- 15:1015:10, 29 February 2024 diff hist +2 NTSC video Fix equation for G in YUV to RGB matrix
- 05:5505:55, 29 February 2024 diff hist +28 NTSC video Fix all matrix equations of YUV using new reduction factors
- 05:2405:24, 29 February 2024 diff hist +63 m NTSC video Fix link for SMPTE EG 27-2004
- 05:1905:19, 29 February 2024 diff hist −54 m NTSC video Undo revision 21635 by Persune (talk) Tag: Undo
- 05:1805:18, 29 February 2024 diff hist +54 m NTSC video Fix source for reference in composite decoding
28 February 2024
- 04:3204:32, 28 February 2024 diff hist +6 m NTSC video Fix errors in C++ signal generation
19 February 2024
- 07:2207:22, 19 February 2024 diff hist −1 PPU palettes Actually revert generated palettes
18 February 2024
- 06:0706:07, 18 February 2024 diff hist 0 PPU palettes Revert generated palettes
12 February 2024
- 16:0116:01, 12 February 2024 diff hist +176 PPU palettes Update generated palettes
10 February 2024
- 23:1923:19, 10 February 2024 diff hist +12 m NTSC video Use more precise color-difference reduction factors
19 January 2024
- 16:4216:42, 19 January 2024 diff hist +10 Expansion Port Sound Module No edit summary current
17 January 2024
- 13:2813:28, 17 January 2024 diff hist +63 User:Persune Switch direction of EPSM FC daughterboard schematic current
7 January 2024
- 07:0307:03, 7 January 2024 diff hist −1,179 NTSC video Remove references to old voltage measurements
25 July 2023
- 00:5500:55, 25 July 2023 diff hist −31 PPU palettes Update 2C02/2C07 palettes
19 July 2023
- 18:2018:20, 19 July 2023 diff hist +194 NTSC video Detail saturation loss compensation in composite video decoding
8 June 2023
- 13:4713:47, 8 June 2023 diff hist +7 PPU palettes Fix composite palette colors with properly rounded RGB values
6 June 2023
- 20:1120:11, 6 June 2023 diff hist +40,426 PPU palettes Overhaul palette color tables
20 May 2023
- 10:3710:37, 20 May 2023 diff hist +1,053 N File:Quadrature demodulation.svg This diagram illustrates quadrature demodulation, used in decoding composite signals to color YUV. More details can be found on the NTSC video page. The three graphs on the left shows how the Y, U, and V component signals are decoded using the composite signal and a reference carrier wave. The polar graph on the right shows the resulting color phase and saturation of the decoded color. The Y component (shown in orange) is decoded by low passing or comb filtering the input signal. (show... current
19 May 2023
- 06:3206:32, 19 May 2023 diff hist +712 NTSC video Update composite decoding terminology; hint at colorimetry details
25 April 2023
- 19:4319:43, 25 April 2023 diff hist +4,597 PPU palettes Format palette tables for RGB PPUs
23 April 2023
- 19:0319:03, 23 April 2023 diff hist 0 m User:Persune Odd-Even pinout for consistency with schematics
- 17:4417:44, 23 April 2023 diff hist +1,183 User:Persune Famicom EPSM access
14 April 2023
- 08:3308:33, 14 April 2023 diff hist +9 m PAL video Missing "notes" column name
12 April 2023
- 07:1407:14, 12 April 2023 diff hist +465 PAL video Cite timing sources
- 07:0907:09, 12 April 2023 diff hist +445 NTSC video Cite timing sources
- 07:0007:00, 12 April 2023 diff hist +3,377 PAL video Add scanline timings
- 05:1805:18, 12 April 2023 diff hist 0 File:Pal video timing.png Persune uploaded a new version of File:Pal video timing.png current
- 04:5904:59, 12 April 2023 diff hist +93 NTSC video Indicate where VBlank is set and cleared
- 04:3704:37, 12 April 2023 diff hist +516 m NTSC video Use colored squares instead of names
11 April 2023
- 20:2820:28, 11 April 2023 diff hist +86 File:Pal video timing.png Reword description; fix hyperlink
- 20:2520:25, 11 April 2023 diff hist +945 N File:Pal video timing.png A visualization of the PAL PPU's video output signal, using different colors to denote each part of the signal. Based on File:Ntsc_video_timing.png. The video output of the PPU is delayed by 1 pixel clock. In addition, the active video portion is delayed by another 1 pixel clock. Cycle 0, scanline 0 according to the [https://www.nesdev.org/wiki/File:Ppu.svg PPU Frame Timing Diagram] is marked by the black pixel. * Cyan is the horizontal blanking pulse * Dark blue is the "back porch" aft...
- 20:1920:19, 11 April 2023 diff hist +1,139 NTSC video Reposition start times of scanline timings, use more accurate terms for components of composite video
- 19:0019:00, 11 April 2023 diff hist +82 File:Ntsc video timing.png Clarify delay between internal PPU abstraction and output composite signal current
- 12:5812:58, 11 April 2023 diff hist 0 m File:Ntsc video timing.png Off-by-one error
- 10:5810:58, 11 April 2023 diff hist −24 File:Ntsc video timing.png PPU skipped dot is off by 1 scanline and 1 dot
- 10:5710:57, 11 April 2023 diff hist 0 File:Ntsc video timing.png Persune uploaded a new version of File:Ntsc video timing.png
- 08:5808:58, 11 April 2023 diff hist 0 m File:Ntsc video timing.png Gray pulse happens on cycle 327
- 08:1808:18, 11 April 2023 diff hist +205 File:Ntsc video timing.png Describe cycle 0 pixel and dot skip pixel
- 08:0908:09, 11 April 2023 diff hist 0 File:Ntsc video timing.png Persune uploaded a new version of File:Ntsc video timing.png
9 March 2023
- 08:2108:21, 9 March 2023 diff hist +2 m NTSC video Refer to both matrices instead of the original single matrix
- 08:2008:20, 9 March 2023 diff hist +280 NTSC video Add YUV to linear RGB conversion matrix in terms of YUV only
- 08:0708:07, 9 March 2023 diff hist 0 m NTSC video Correct swapped color reduction factors
8 March 2023
- 18:3118:31, 8 March 2023 diff hist +201 NTSC video Clarify IQ to UV rotation matrix (thanks to NewRisingSun for clarifications)
- 17:0617:06, 8 March 2023 diff hist +964 NTSC video Reword composite decoding summary (thanks to NewRisingSun for clarifications)
- 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
27 February 2023
- 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...
26 February 2023
- 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
11 February 2023
- 16:4516:45, 11 February 2023 diff hist 0 File:NES-EWROM-01.svg Persune uploaded a new version of File:NES-EWROM-01.svg current
- 16:4416:44, 11 February 2023 diff hist −5 NES cartridge dimensions Update cutout hole dimensions current
26 November 2022
- 08:4308:43, 26 November 2022 diff hist +223 User:Persune Update
20 September 2022
- 04:1004:10, 20 September 2022 diff hist 0 m NES cartridge dimensions Fix designator reference length
18 September 2022
- 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.
20 January 2022
- 18:1518:15, 20 January 2022 diff hist +1 m Famicom cartridge dimensions Correct measurement tolerances
- 16:5516:55, 20 January 2022 diff hist +18 m Famicom cartridge dimensions →HVC-N/Cx/Gx/UxROM 01-05 (discrete mapper boards)
- 16:5416:54, 20 January 2022 diff hist −49 Famicom cartridge dimensions →HVC-Ax/Fx/Px/Sx/TxROM (MMC1-4 mapper boards)
- 16:4916:49, 20 January 2022 diff hist 0 File:HVC-TGROM-01-board.svg Persune uploaded a new version of File:HVC-TGROM-01-board.svg current
- 09:0409:04, 20 January 2022 diff hist −2 m Famicom cartridge dimensions →HVC-N/Cx/Gx/UxROM 01-05
- 08:5908:59, 20 January 2022 diff hist −70 Famicom cartridge dimensions Update HVC-CxROM board
- 08:5808:58, 20 January 2022 diff hist 0 File:HVC-CNROM-256K-01-board.svg Persune uploaded a new version of File:HVC-CNROM-256K-01-board.svg current
26 December 2021
- 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
23 December 2021
- 14:5614:56, 23 December 2021 diff hist +47 m Famicom cartridge dimensions Designator typo; add image border and caption
- 14:4714:47, 23 December 2021 diff hist −52 File:HVC-TGROM-01-board.svg No edit summary
- 14:4614:46, 23 December 2021 diff hist +4 m Famicom cartridge dimensions Clarify dimension table labels; improve layout
- 14:3614:36, 23 December 2021 diff hist +959 Famicom cartridge dimensions →HVC-TxROM
- 14:0714:07, 23 December 2021 diff hist 0 File:HVC-TGROM-01-board.svg Persune uploaded a new version of File:HVC-TGROM-01-board.svg
21 December 2021
- 10:0910:09, 21 December 2021 diff hist +133 Famicom cartridge dimensions Image formatting and further clarification
- 09:3909:39, 21 December 2021 diff hist −118 Famicom cartridge dimensions Update outline for HVC-TxROM
- 09:3709:37, 21 December 2021 diff hist +30 File:HVC-TGROM-01-board.svg →Summary
- 09:3609:36, 21 December 2021 diff hist 0 File:HVC-TGROM-01-board.svg Persune uploaded a new version of File:HVC-TGROM-01-board.svg
18 December 2021
- 12:4612:46, 18 December 2021 diff hist +32 m Famicom cartridge dimensions No edit summary
- 11:1911:19, 18 December 2021 diff hist +19 m Famicom cartridge dimensions add more PCB types
7 December 2021
- 09:0809:08, 7 December 2021 diff hist +2,499 VRC7 pinout Added expansion audio circuit schematic.
1 December 2021
- 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.
