SNES Clones chipsets and RGB out questions.

Does anyone knows to which revision of the SNES or SFC system do the chips found in most clones are based or copied from?
I just did and RGB mod to my GDSF7 "SNES CD System" and while connecting it to a Scart to HDMI upscaler converter it keeps saying the input signal is PAL-M but is supposed to be NTSC (which is funny because these clones were popular in Brazil where the PAL-M signal is used). It does displays the composite and s-video in NTSC no problem.

I also notice these boards usually have 2 xtals (I think one is the Master Clock and the other is for sound) but the original SNES or SFC only have one, what's up with that?

I'm talking about the chips found in several Chinese SNES clones such as Yobo's FC Twin's, Retro Duo's, TRISTAR64, Retron's, and even actual early SNES clone look alikes. examples:

 

RGB is neither NTSC or PAL. From the sound of it, I have a similar converter to you. For some reason the thing says it's PAL or NTSC on RGB when it is really 50Hz RGB and 60Hz RGB. Sounds like the system or converter input is in 50Hz mode.

 

I never knew there were snes clones. They aren't still made, like megadrives, are they?

 

There's a whole lot of them. They still make them. The Retron systems play SNES games. Retro Bit also has the Retro Duo and a handheld SNES clone called the Retro Duo Portable. The Supaboy is also another portable SNES clone.

 

I know about the Retro duo/FC Twin. But are there clones that look like the original?

 

You are right, perhaps the upscaler option is the one thinking it is PAL-M. This is like the converter that I have:


Any idea to which revision of the SNES or SFC are the chips a copy of? or is it a total new design?

And the SNES CD clone that I did the mod to (removed the RF modulator an added a 9 mini piv AV port like the Sega's) :



Same old chipset inside but really noisy.

 

You have an snes cd clone? I hate you!!! Lol Jk. But they're cool as hell.

 

I have that same converter. I had trouble with my dreamcast on it. Kept saying s-video was PAL when it was NTSC and it kept swapping between composite video mode and s-video mode.

Nice console though. Never seen anything like it before. I think the chips are the same for all SNES consoles minus the CPU revisions, which are interchangeable.

 

if you're not gonna use that 72 pin connector from the NES side.. send it to me!

 

It seems to be a converter problem then. I'm going to take it apart and trace the signals to see where exactly they go to. At first I had the switching problem too, one just have to make sure the scart cable has the switching pin tied to +5Vcc with a 100 ohm resistor. Thanks for your input!

Unfortunately that isn't mine, some of of those pics were shamefully taken from the net

Yeah the thing is pretty cool but it can't play large or DSP games, only up to 32MB and in Game Doctor format. I have almost the entire snes collection like in 5 cd's

 

Ah ok, I just gutted a clone console for its 72 pin connector and could use another one.
Thanks anyway!