Equal trade for Scan Doubler / Flicker Fixer

[J-Golden]

A very nice A.Org member from Sweden saved me from trying to hack a DCE Scan Magic into my A4000T.  The opperation would have been risky because of all the tight spaces...

He sent me intrade a MV1200.  It works like a CHARM except in super Hi-Res.  As stated in the instructions, it only displays every other line.

Is this normal of all FF/SD?  Would my internal DCE do the same thing or is this problem specific to the MV1200?

And honestly, is it as a big deal that Super Hi-res is so ugly?

[Zac67]

Since SHires has twice the number of pixels as Hires, you'd need twice the RAM. At least the 'classic' FFs simply don't own enough memory and thus do not attempt to sample at 24 MHz.

SHires is only this ugly if you only see every other pixel...

[patrik]

@Zac67:

Apart from needing double as much memory, they would need double as fast memory as the pixels would be sampled at ~28MHz and output at ~56MHz compared to ~14MHz and ~28MHz now. This if they would stick to their current design and just scale it to be able to manage Super Hires.

(edit):

I also forgot that they also need a faster D/A if the separate ~56MHz pixels are supposed to be distinguishable.


/Patrik

[J-Golden]

 :-o

Ok, way to much info here but what I get from it, I think, is that NO Amiga scan doubler, internal OR external, can do Super Hi-Res justice.  IE they all will drop every other line.

Am I correct in saying this?

[ChaosLord]

Many years ago when I was first working on making an AGA version of Chaos: Wizard War II, I was going to make the AGA version run in 1280x512 (SuperHiRes) with 256 colors or HAM8.

I was shocked to discover that SuperHiRes was all trashed out on my Flicker Fixer display!  But it looked awesome on my 1084S!  I thought my FlickerFixer was broken!

Then I found out that no known Flicker Fixer supports SuperHiRes.

So I had to scale the game back to 640x512 with 256 colors.

[J-Golden]

ChaosLord wrote:
Many years ago when I was first working on making an AGA version of Chaos: Wizard War II, I was going to make the AGA version run in 1280x512 (SuperHiRes) with 256 colors or HAM8.

I was shocked to discover that SuperHiRes was all trashed out on my Flicker Fixer display!  But it looked awesome on my 1084S!  I thought my FlickerFixer was broken!

Then I found out that no known Flicker Fixer supports SuperHiRes.

So I had to scale the game back to 640x512 with 256 colors.

Ah cool, Thanks C Lord, thats exactly what I was looking for..

BTW, what happened to the game you made?

[patrik]

@J-Golden:

They will drop every other pixel on the horizontal lines the image is made up of.

The ScanDoubler II can as far as I understand the german manual manage super hires and if that is correct, it is the only one capable of that as far as I know.

The majority of aga scandoublers/flickerfixers are very bad and that is not because of them not supporting super hires - which imo is a minor flaw, but they make the aga graphics look like ocs graphics by not supporting the 24-bit aga palette.


/Patrik

[J-Golden]

patrik wrote:

The majority of aga scandoublers/flickerfixers are very bad and that is not because of them not supporting super hires - which imo is a minor flaw, but they make the aga graphics look like ocs graphics by not supporting the 24-bit aga palette.

/Patrik

Well since there are as many 24-bit FF/SD out there as there are ones that will do Super High-res, I'm just happy as a warm fuzzy kitty with mine!   :kitty:

J-Golden

PS- tried to read the manual you listed, but the only German I kmow is from an episode of "The Simpsons" :

"ACH!!  Ich nine boobies!!!!"

[mr_a500]

"ACH!! Ich nine boobies!!!!"

:lol:

Most of the German I learned was in the movie "Top Secret".

"There is sauerkraut in my leiderhosen."
"I'll have a schnauser with my wienerschnitzel."