Neo Fami (NES clone) RGB?

[CarlDMC]

I found this clone of the NES and was wondering if anyone has one and was able to get RGB out of it?

http://www.gametech.co.jp/products/catalog/2226/2401_1.html

I can't get any info from the web site since it's in Japanese, but was hoping it used a easy to work with video chip.

[Moosmann]

As far as i know no and no RGB Mod possible (with Playchoice/Titler/C1 PPU).

The Neo Fami is not 100% compatible with all famicom games.

Bye Markus

[NFG]

None of the 1-chip Famicom clones can do RGB.  They're all using the same components, so there's no point asking about specific models.  The answer's always "no, dammit."

As for the replacement video chip (from the Famicom Titler, PC10, etc) it's not 100% compatible with all games either.  It has a reduced colour palette and several games will glitch on it.  Sad but true.

[Moosmann]

The only game, which run in wrong colors is"Totally Rad" from Jaleco in the first stage.

As for the graphic glitches problem, i found out:

http://markus.brandel.bei.t-online.de/NES-...icglitches1.JPG
http://markus.brandel.bei.t-online.de/NES-...mpatibility.bmp
http://markus.brandel.bei.t-online.de/NES-US-68pF.bmp

Bye Markus

[NFG]

I don't have the data in front of me, but I have conclusive evidence somewhere around here by way of Kevin Horton, that the RGB chip has fewer bits per RGB channel and is missing several features found in the normal chip.  It is NOT 100% accurate in either colour reproduction or compatibility.

Here we go, found the data.  This is from Kevin Horton's site.

The PPU found in the Playchoice 10 (marked RP2C03B) is very similar to
the PPU inside a regular NTSC NES/Famicom, except it outputs RGB video
instead of NTSC.  Many people have used these chips to convert their
home console over to RGB. 

Unfortunately, all is not roses.  While the PPU may run the games
properly, it does not implement everything the same as the RP2C02G
(this is the PPU found inside NES' and Famicoms).  The base palette
looks pretty close, but as others have found, some of the browns are
too bright.  Also, the dark grey found on colour 0Dh is not present.

The colour emphasis bits don't work the same either-  Turning one (or more)
of these bits on results in that colour coming on at maximum brightness.
Turning all 3 bits on at once results in a completely white screen.

On the RP2C02G, it actually has the opposite effect and DIMS everything
pretty much evenly. It STILL is not known exactly how this works on the
RP2C02G, and the matter is still open for debate.

These emphasis bits even affect blacks, so games that use these bits will
look very funny indeed.  The game Micromachines uses them a bunch for the
title screen, and there are others.

The monochrome bit also does not work exactly as expected.  Brightness level
30h, 20h, and 10h work as expected, however brightness level 00h comes out
as black instead of dark grey.  Likewise, colour 00h is black on this PPU
instead of being dark grey.

The colour emphasis bits have an odd affect when this bit is turned on-
Brightnesses 20h and 30h are white, while brightness 00h is maximum emphasis
brightness. (i.e. brightnesses 00h will be full on red, blue, etc if the
corresponding emphasis bits are set).  Brightness 10h is half brightness
of the corresponding emphasis bit(s).

[Moosmann]

Yes, the background from Totally Rad with RGB Chip is black instead white
But it`s the only game and Micromachines is a unlicensed game like Totally Rad (unlicensed in Japan).

The color brown from Kid Icarus has the same brightness as on the screenshot from the   box. Maybe the color brown is darker on a normal NES, because of quality lost with Video ?

Bye Markus