Amiga VGA converter boxes on Ebay

[kipper2k]

Hi all,

Just want to tell you that you may see advertised on EBay some Amiga video VGA boxes that convert the Amiga RGB output to VGA. They are selling for £90.00. They do work well and both sellers who actually are selling these were claiming that the other stole their boards etc (they both now removed the comments). They are advertising therm as scandoubler/flickerfixers

I browsed Ebay and found the actual boards that both of these people use.

Here is a listing.

http://www.ebay.com/itm/ws/eBayISAPI...#ht_4030wt_810

The boards by themselves cost £19.00 so there is a massive markup to buy one of these that come with a plastic box and a 23 pin connector thats been added. If you can get the parts yourself, build it yourself, it's not hard, all you need to do is solder some wires to the 23 pin connector. The picture quality is actually impressive, I would give it an 8/10

[johnim]

Hi mate the boards have been on here for a while and are ok for the price

http://www.amibay.com/showthread.php?t=20468

http://eab.abime.net/showthread.php?...highlight=8220

http://eab.abime.net/showthread.php?...light=GBS-8220

[rampartsagain]

hi kipper i post message yeasterday about this does this support interlaced without annoying screen shrink madness

[kipper2k]

Originally Posted by rampartsagain

hi kipper i post message yeasterday about this does this support interlaced without annoying screen shrink madness

I find this adapter works very nicely. (I also have a nice case mod in the works for this

[BuckoA51]

FYI (yes I know I'm late) those boards do 50 to 60hz conversion which means PAL material will stutter when scrolling.

[roy bates]

i havent noticed any stuttering with a gbs,what do you mean?

[BuckoA51]

Well if you feed it a 50hz PAL signal it will output a 60hz VGA signal which means a frame-rate conversion is going on which means some stuttering unfortunately. It'll manifest itself as like a small hiccup during scrolling, for instance. Some people notice it more than others.

[johnim]

i have never noticed any either

[BuckoA51]

Annoyingly, you probably will now you know to look for it, sorry

[roy bates]

Originally Posted by BuckoA51

Annoyingly, you probably will now you know to look for it, sorry

nope,no stuttering here.


do you own a gbs at all?

[BuckoA51]

I don't but I've owned similar converters. Unless it's outputting 50hz VGA (which they don't) then 50hz pal is going to stutter some, there's simply no way around that.

[roy bates]

Originally Posted by BuckoA51

I don't but I've owned similar converters. Unless it's outputting 50hz VGA (which they don't) then 50hz pal is going to stutter some, there's simply no way around that.

im sorry i do own 2 of these and there is no stuttering.

may i suggest you buy one before saying anything first

[BuckoA51]

Ok well please don't misunderstand me, these are excellent converters and well worth the money. We're not talking about huge amounts of stuttering here, 50 to 60hz framerate conversion is normally quite acceptable. On many games you will not notice it. It is there though, if you think about it you're converting 50hz to 60hz, PAL frame-rates to NTSC frame rates on the fly, something has /got/ to give.

[roy bates]

Originally Posted by BuckoA51

Ok well please don't misunderstand me, these are excellent converters and well worth the money. We're not talking about huge amounts of stuttering here, 50 to 60hz framerate conversion is normally quite acceptable. On many games you will not notice it. It is there though, if you think about it you're converting 50hz to 60hz, PAL frame-rates to NTSC frame rates on the fly, something has /got/ to give.

again,there is no stuttering.at all

[johnim]

i have 2 also and have never had anything like you say

[BuckoA51]

You're lucky that you don't notice it, sadly I do. As stated above its physically impossible to go from 50 frames to 60 on the fly without there being some stuttering/dropped frames/judder.

Here's some reading for you on the subject so you know I'm not just blowing out my backside with this:-

http://www.extron.com/company/articl...urateframelock

[roy bates]

Originally Posted by BuckoA51

You're lucky that you don't notice it, sadly I do. As stated above its physically impossible to go from 50 frames to 60 on the fly without there being some stuttering/dropped frames/judder.

Here's some reading for you on the subject so you know I'm not just blowing out my backside with this:-

http://www.extron.com/company/articl...urateframelock

you cant possibly be noticing stuttering on a product you dont own yourself.

[BuckoA51]

Unless the gbs can defy the laws of mathematics then it will have some kind of stutter/judder trade off for converting 50hz into 60hz. It's simply impossible to convert one frame rate to another on the fly without it. If it were, movie studios wouldn't bother telecine DVD's for instance, the 24p smooth film mode on your TV wouldn't exist. There are lots of things I don't own that I know can't break the laws of reality

But anyway, if you're happy with it that's all that matters, I'm just letting people know. There are people on Lemon 64 for instance that ask "how do I get smooth scrolling on my C64 emulator" some people just look at them quizzically who've never even noticed it's not as smooth as a CRT.

[roy bates]

how many fps can you see? you do realise what 50 and 60hz is dont you?

[thgill]

I had a GBS 8220 and tested both CRT and LCD monitors with it on my PAL A1200.

There was a noticeable stuttering where scrolling should be smooth since 50Hz material was being sampled up to 60Hz.

On most games it wasn't as noticeable, but boot up a Demo or something with scrolling text and the stuttering was there.