- Drakon wrote:
- There is no glitching at all in mario 2. You've never heard of contra?
If you have a ppu that glitches that's probably because something is blown in your ppu chip. Here's a video I made showing a clients glitching rp2c03b chip vs one that's working normally.
His chip only seems to glitch on contra most other games looked fine. The chip is no different than the fully working one it probably just is partly faulty. This is actually the first glitching I've ever experienced with any chip. The only regular glitching you get with these chips is in the bubble man stage of megaman 2 when you're underwater occasionally it draws the wrong tile for a split second in random places.
I tested on my RGB modded USA NTSC Toaster NES Revision 4 (NES-CPU-04) and all 5 off RP2C03B's from my five PlayChoice 10 boards have the same glitch in USA NTSC Super Mario Bros 2. Markus (Moosmann) mentioned that the glitch is normal for the RP2C03B, and a 68pF cap doesn't solve the problem.
Here's what I am seeing ;-
3 of my PPU's have a different batch number to each other. 3 had heatskinks, 2 didn't.
All worked perfectly in USA NTSC Super Mario Bros 1. No glitch on the right hand last column of pixels. Only in SMB2 does this happen. Maybe related to my NES revision. The glitch in SMB2 happened both before and after I installed the 68pF cap from pin 24 to pin 20 (Moosmann's mod). Salamander on NFG Games also gets this same glitch in SMB2.
I wonder if it's something to do with my actual cart?! Since different games seem to give different glitches (but I don't know whether different batches of the same cart could give a different glitch).
Markus said that although the glitch in SMB2 is "normal for the RP2C03B", the RP2C03C from the C1 TV and the Titler RC2C05-99 PPU don't have the glitch in SMB2. Neither does the actual PlayChoice 10 when playing PC10 SMB2.
Yes I know about Contra but I don't play shoot 'em ups hardly at all LOL I just tried the Gryzor ROM (Japanese version of Contra it seems) in NEStopia like you are running on that NES 2 above, and I see that in Composite palette mode the lower part of the Konami symbol is brown, and the skin tone on the guy on the right is pink, whereas in RGB the Konami same part of the symbol is now red and the skin tone is now yellow, same as in your picture above. It's a real bummer that the RC2C05-04 turns out to have the RGB palette!