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Old 26 March 2007, 15:35   #21
keropi
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searched too... I cannot seem to find the exact post that this has been thoroughly discussed, but there is some info HERE
it appears that it is actually 4:4:8 ??!
I will search some more back home after I try to rememeber some keywords...
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Old 26 March 2007, 16:46   #22
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I am yet to see any true empirical evidence.

Non of the posts are from anyone I would trust.

The guy Legerdemain changes his mind from one post, 8:4:4 in half, 4:4:8 in others. Obviously getting confused.

I need a post where someone has done some empirical tests, 256 shades of RED, Green and Blue and counted the number of distinct colours. OR from someone I would trust.

I am more ready to believe Red:Green:Blue of 8:4:4 having read lots of articles where they seem to indicate that RED has more than 16 shades. Still seems mad to choose anything but 5:6:5

I wish I had tested CU_AMIGA's one before I sent it him back.

Anyone with a FlickerMagic / ScanMagic willing to do a quick test in D-Paint?
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Old 26 March 2007, 17:14   #23
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back when I had one on my A4000 along with an arxon , I did a test in a demo (can't remember the name though) and the DCE did miss some color detail... the scene was some gray clouds, and the gradient was not that good on the DCE...
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Old 26 March 2007, 17:51   #24
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Quote:
Originally Posted by keropi
I did a test in a demo (can't remember the name though) and the DCE did miss some color detail... the scene was some gray clouds, and the gradient was not that good on the DCE...
Was the demo RAIN by The Black Lotus?? ( [ Show youtube player ])

Interesting test, though not quite as empirical as counting how many of the 256 shades of a colour can be seen in 3 different (one RED, GREEN, BLUE) 256 colour IFF pictures.
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Old 26 March 2007, 17:55   #25
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Are there any instruction on how to make flicker fix/scandoubler your self?
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Old 26 March 2007, 18:21   #26
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They are very easy and very cheap to make as long as your monitor doesn't mind 50/60Hz vertical refresh.

You can make a 16-bit (RGB 5:6:5) scandoubler yourself with about $25 (15) worth of parts. (How much detail do you want?)

However most people seem to complain about 16-bit ones.

But why bother? Just buy a ready made one.

If you cannot find an Amiga specific one, ask Roy Ritty, he makes 16-bit external scandoublers for $48
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Old 26 March 2007, 19:23   #27
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yes alexh, it is the RAIN by The Black Lotus demo!
I had both arxon and dce on the same amiga, and changed output with the eytech UMON... DCE did miss color detail, but u had to watch it carefully to notice it... maybe it is more apparent in colorfull aga games??
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Old 26 March 2007, 19:58   #28
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DOH I am such a Muppett!!!

In my haste, I grabbed the first VGA type cable I could find. Of course it is an old Mac cable and is missing 2 of the 15 pins..... The ones that carry the Red signal...

New cable = 100% working SD/FF PAL Hires laced never looked so solid

Now given that I have my Voodoo3 going to my 19" LCD, my Microvitec connected to AGA and the SD/FF going to a lovely big 19" CRT, my desk is about to collapse!
So should I rely on my Microvitec and sell the SD/FF?.... hmmmmm? Thoughts please.
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Old 26 March 2007, 20:03   #29
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yes, ditch the mediator and get a g-rex1200.
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Old 26 March 2007, 20:06   #30
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Quote:
Originally Posted by keropi
yes, ditch the mediator and get a g-rex1200.
gah! I have more chance of you sending me a free CBPPC than finding one of those puppies! Besides I like my setup!

One thing I wanna do though is get me an 060 put on the BPPC.
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Old 26 March 2007, 21:15   #31
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Quote:
Originally Posted by DDNI
gah! I have more chance of you sending me a free CBPPC than finding one of those puppies!
Amigakit sells the old grex1200s for 149.99 GBP

Be aware that this G-Rex is the old version with only 1 DMA slot. It does not have the DMA fix. It's labelled as 'Predator SE' and is from Eyetech's old stock.
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Old 26 March 2007, 21:21   #32
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Ta Smiley,

I can see a benefit of GREX over Mediator, but not 149.99 worth
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Old 27 March 2007, 11:00   #33
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Quote:
Originally Posted by alexh
Anyone with a FlickerMagic / ScanMagic willing to do a quick test in D-Paint?
Done. It's 5:6:5.

I noticed that the display looks exactly the same in Winuae when it is set to 16Bit.
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Old 27 March 2007, 11:22   #34
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I thought that it would be, no-one in their right mind would do RGB 8:4:4

I wonder where all the posts on Amiga.org where they claim they could only count 16-shades of green came-from?
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Old 27 March 2007, 13:34   #35
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Quote:
Originally Posted by alexh
They are very easy and very cheap to make as long as your monitor doesn't mind 50/60Hz vertical refresh.

You can make a 16-bit (RGB 5:6:5) scandoubler yourself with about $25 (15) worth of parts. (How much detail do you want?)

However most people seem to complain about 16-bit ones.

But why bother? Just buy a ready made one.

If you cannot find an Amiga specific one, ask Roy Ritty, he makes 16-bit external scandoublers for $48
16-bit?? Now you talking high-tech. Ins't amiga screen at best 16-bit?

What's the difference and what should I know before getting one?

Are there any instruction on what parts and how connected to use to build it? $25 dollars doesn't tell much. I'm sure I'll use that amount on the beer alone in the project.

And who is Roy Ritty??
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Old 27 March 2007, 13:57   #36
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Quote:
Originally Posted by Anubis
16-bit?? Now you talking high-tech. Ins't amiga screen at best 16-bit?
The Amiga graphics are 12-bit for OCS/ECS (A1000/A500/A600/A2000/A3000/CDTV) and 24-bit for AGA (A1200/A4000/CD32).

Quote:
What's the difference and what should I know before getting one?
Erm... you dont know? If the screen has lots of one colour on the screen at once, with a 16-bit scandoubler the fine colour detail can blend into one another. With a 24-bit scandoubler it is as nature intended

Quote:
Are there any instruction on what parts and how connected to use to build it?
It is obvious from your posts that it is beyond your capability. Just buy one.

Quote:
And who is Roy Ritty??
He is a retro gamer from the Tandy scene who created an EXTERNAL scandoubler for the CoCo (Tandy Colour Computer). He recently modified this for the Atari ST and he can do the same for the Amiga. It is the cheapest possible scandoubler for any platform as it uses off the shelf LCDTV ASIC chips (high volume, low cost) from Averlogic (AL250).
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Old 27 March 2007, 15:53   #37
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Thanks for explanation.

See, now I know that I need 24-bit as I have A1200.

16-bit might work as well as I intend to play mostly WHDLoad games (and most of them are A500 games).

Anything else I should know before I either buy one or try to figure out how to build one.
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Old 27 March 2007, 16:00   #38
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Internal scandoublers produce a sharper picture than external ones because they are not converting the signal from Digital->Analog->Digital->Analog.

The bummer is that most internal ones are 16-bit or require a Towered A1200 with a video port.
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Old 28 March 2007, 03:04   #39
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Thanks!
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