Search found 10919 matches

by lidnariq
Mon Aug 08, 2022 1:57 pm
Forum: NES Hardware and Flash Equipment
Topic: AV/Power module sourface mount element
Replies: 3
Views: 186

Re: AV/Power module sourface mount element

Does your multimeter have a diode test? If so, can you see if there are any diode drops across the various pins? In purple is my best guess as to the primary baseband video path: 1_video_marked_cropped.jpg As such, you might be able to get away with just removing the 6-pin part altogether, depending...
by lidnariq
Mon Aug 08, 2022 10:11 am
Forum: NES Hardware and Flash Equipment
Topic: AV/Power module sourface mount element
Replies: 3
Views: 186

Re: AV/Power module sourface mount element

Do you have any diagnostic tools? (oscilloscope, voltmeter, &c) I don't recognize a 6-pin SOT23 part, but I agree it looks like it's part of the video path. You may be able to get away with bypassing it, or replacing it with "just" a transistor. Unfortunately, all the RF modulators are...
by lidnariq
Sun Aug 07, 2022 2:43 pm
Forum: NES Hardware and Flash Equipment
Topic: CIC AVR KRIKZZ NO WORK
Replies: 21
Views: 1005

Re: CIC AVR KRIKZZ NO WORK

On an original motherboard, the two-wire mod is less invasive: viewtopic.php?p=209346#p209346

On a brand new OpenTendo board, my variation requires fewer parts.
by lidnariq
Sun Aug 07, 2022 11:49 am
Forum: NES Hardware and Flash Equipment
Topic: CIC AVR KRIKZZ NO WORK
Replies: 21
Views: 1005

Re: CIC AVR KRIKZZ NO WORK

You don't even really need the nullCIC - you can just apply the "two wires" mod even without the CIC populated at all.
by lidnariq
Sat Aug 06, 2022 4:03 pm
Forum: NES Graphics
Topic: The Quest for the Perfect Palette Generator
Replies: 51
Views: 77630

Re: The Quest for the Perfect Palette Generator

Will you let us know when the copy on wootest.net is updated with the new toggles? (or if you have a different preferred host)
by lidnariq
Fri Aug 05, 2022 4:31 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

Quietust just dug into this, and observed that phases $x2/$x6/$xA should be delayed because the same node in the chroma generator has to drive extra long traces for emphasis even when emphasis isn't being used - hence the delay on those colors. Which means that So even though digitally the angles ar...
by lidnariq
Fri Aug 05, 2022 2:33 pm
Forum: NES Hardware and Flash Equipment
Topic: CIC AVR KRIKZZ NO WORK
Replies: 21
Views: 1005

Re: CIC AVR KRIKZZ NO WORK

If it is the CIC, all other pairings work except 6113 as lock and 3193 as key.
by lidnariq
Fri Aug 05, 2022 1:20 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

OK that would be an answer to my question, thanks. No, it's not. :( It's outdated. I'm just too slow. I think the hue of each color can be expected to be the same from PPU to PPU of the same region (NTSC or PAL), because the color subcarrier is completely digital. It is essentially a clock signal f...
by lidnariq
Thu Aug 04, 2022 11:46 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

Do the different PPU revisions in standard American NTSC front loader NES consoles produce slightly different results? Yes. 2C02E, 2C02G both exist in significant numbers and differ. Not a lot, but definitely measurably. 2C02H probably differs measurably too, but we haven't measured it yet. All thr...
by lidnariq
Thu Aug 04, 2022 9:11 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

You could think of chrominance as a phasor ... but if you were already comfortable with phasors, you wouldn't ask this question, so ... Perhaps another way to look at it is: U,V or I,Q or Pr,Pb are all Cartesian coordinates. But the NES, 2600, and other early consoles work natively in composite, and...
by lidnariq
Thu Aug 04, 2022 5:20 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

I don't know why it's usually expressed in degrees. Maybe the typography for specifying angles in radians would be messier?
by lidnariq
Thu Aug 04, 2022 2:45 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

I have another question. How come that the hues on the PPU are in angles, degrees and clockwise etc, and not voltage levels? Does it have something to do with NTSC and PAL color encoding? Because they natively generate video in the composite domain. It's why the TMS99x8A datasheet has NTSC voltages...
by lidnariq
Wed Aug 03, 2022 5:36 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2019

Re: Trying to figure out which RGB palette is canonical

Is this a phenomenon between Famicom, NTSC NES, PAL NES and top loader? Or maybe a difference between the first batch of Famicoms (with the square buttons) and later versions? All of the above. PAL hue angles are already thought to be off by 15 degrees relative to NTSC ideal, but it turns out it's ...
by lidnariq
Tue Aug 02, 2022 8:34 pm
Forum: SNESdev
Topic: Regarding SNES' object limitations
Replies: 119
Views: 4381

Re: Regarding SNES' object limitations

We're not having any more of this.
iNCEPTIONAL wrote: Mon Aug 01, 2022 2:15 pm if I happen to big-up the SNES a little from time to time here in the SNESdev forum.
Honestly, please don't do that. That's what has caused most of the problems.
by lidnariq
Tue Aug 02, 2022 6:53 pm
Forum: SNESdev
Topic: Kulor's Guide to Mode 7 Perspective Planes
Replies: 63
Views: 4031

Re: Kulor's Guide to Mode 7 Perspective Planes

I split the tangent about multiple textures into this thread: viewtopic.php?t=24060