Budget S-Video/Composite-to-VGA box

[hardlink]

skurk wrote:
I bought a standalone TV Tuner box for my C64DTV.  It accepts composite, vga, RF etc. and has one VGA output.  

Do you know of any models that accept 15KHz RGB (not vga) input? That would be as good as the external Amiga scandoublers/deinterlacesrs, which isn't bad.

[Speelgoedmannetje]

fannypad wrote:
I'm looking for a cheap, preferably sub-£30 composite/S-video to VGA box for running my A1200 through a TFT.

I'm sure this has been asked umpteen times before, but my searches only dug up references to more expensive (£60+) models, and if I'm going to spend that kind of money I might as well chip in a bit more and wait for a second hand scan doubler to show up.

Any pointers?

I got an E-Tech tv box, wich works very well :-)
But you might also opt for this, wich definately will get you the best picture quality. (RGB 15khz to 31khz for $48, though it needs a very little soldering around)

[fannypad]

Speelgoedmannetje wrote:

But you might also opt for this, wich definately will get you the best picture quality. (RGB 15khz to 31khz for $48, though it needs a very little soldering around)

This is the best looking solution yet

What kind of soldering does it involve to get it working with an Amiga? I hope it's just the 23-pin connector and no extra components required...

[Speelgoedmannetje]

Well, you just need to get yourself the 23 pin connector (not available in store anymore, though you can remove 2 pins on one side on a female 25 pin connector with a iron saw, and then you can ask the builder for a pinout, get yourself the pinout of the Amiga on HwB and you can solder it straightforward, without additional stuff).

[InTheSand]

I wonder if the adapter above will deal with the Amiga's full range of colours?

Didn't the CoCo only have eight basic primary colours or something like that?

Be interesting to see how/if it works with an Amiga, especially given the price!

 - Ali

[Speelgoedmannetje]

It works because it's analogue.

[fannypad]

Have you tried one with an Amiga or know someone that has?

[Speelgoedmannetje]

fannypad wrote:
Have you tried one with an Amiga or know someone that has?

I have soldered alot for rgb/s-video/composite stuff. I know this works because it's the right format.

[Speelgoedmannetje]

Look at this`
Amiga video pinout
and this
CoCo
It's basically a job of rewiring. :-) (Soldering the Grounds, R, G, B and Horizontal + Vertical syncs of the Amiga to that of the CoCo, so to say)

[DamageX]

Yeah but the Coco3 only outputs 64 possible colors, many fewer than an Amiga, and normally the ADCs/DACs and memory in a scandoubler have to take this into account. Besides that, for only $48 it's too good to be true.

[fannypad]

All those extra colours will just be combinations of red, green and blue so it won't make a difference; I very much doubt there are any ADCs/DACs or complex ICs in that thing.

I'm more interested in whether the increased bandwidth due to the higher resolution of the Amiga screen modes will affect anything.

[Dr_Righteous]

I have a partial screenshot from my setup (full shot was too large), running at 640x400x256 HERE. Looks a little chunky since I have it set up for 1024x768x24bit RTG... And don't mind the artifacts from JPEG compression. It's not crystal clear, I could probably clean it up more if I tweak the settings in my video application more. It works well when playing non-rtg games tho, and certainly better looking than my jittery C=1950, or even a TV.

[Speelgoedmannetje]

DamageX wrote:
Yeah but the Coco3 only outputs 64 possible colors, many fewer than an Amiga, and normally the ADCs/DACs and memory in a scandoubler have to take this into account. Besides that, for only $48 it's too good to be true.

It can be done for 20 euros but it's a lot of soldering.

[e5frog]

You can modify your A520 to give S-Video out:
http://members.iinet.net.au/~davem2/overclock/a520.html


I have superb picture with my PC video card, there are also usually software filters that can remove interference (if any).