I've tested the sharp pixel mod in a PAL and a NTSC SNES if you mean that on here
Read on Circuit-Board this post (German)
and the following. Or to keep it short, I gave up with this mod due to the following reasons:
- noisy / shaky image on all of my TV sets
- high impact on the composite video output - the output became useless
- hardly understandable
This was the point where I started a second try with the THS7314 / THS7374. The S-PPU2 is not designed to drive low loads. This is the reason why the 'Bypass' board always sits behind the first or second transistor after the S-PPU2s RGB outputs.
Will 3-Chips magically look like 1-Chips?
According to this thread
, no. The image will be "better" but not with sharper pixels.
Maybe Borti can put up some comparison pics?
One thing it can do is give csync to PAL consoles. But otherwise, yeah I'm a bit unsure if the install effort would be worth it...
Correctly summarized! To make it magic, one might need a sample and hold circuit. (An approach by micro at Circuit-Board.de
(also in German))
Unfortunately, my before-and-after pictures with the board were useless. So I throw them away. I also only have one 3Chip-SNES at home at the moment. But once I have a second, I will make a second try for before and after. However, everybody who has the equipment to make professional comparison pictures feel free to make some!
So the LPF can be disabled permanently by closing "J1" or turned on/off by using user-in-game-reset?
If you don't have a region patch installed, you can use pin 7 for switching on and off the LPF. In general, most people do not change it.
If you want to have an extra pin, I have to change the PIC (what I don't want at the moment).
Looks like Borti just released his V4 Bypass PCBs on OSHPark.
SNES RGB Bypass Board V.4a // RGB+CS Version
SNES RGB Bypass Board V.4b // RGB Only Version
More info on GitHub
At the moment, my free time is very spare. So I'm happy that I found the time to write the READMEs. I hope that I haven't forgot anything and most of it is understandable. If not, just forward questions to me or the forums where I'm around. I will then try to improve the instructions.