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Author Topic: Scandoubler schematics  (Read 14591 times)

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Offline amiga_3k

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Re: Scandoubler schematics
« on: April 08, 2007, 10:26:17 AM »
Those schematics are rather difficult to find. Depending on your electronics-skilss you could have a look at AverLogic
they provide a chip doing a part of the trick: Scandoubling. In front of it, you probably need some kind of RGB to composite conversion schematic. That part could possibly be handled by Motorola's MC1377.

So, if you can think of a schematic joining both chips in the correct way and make your design as such that you basically design a board meeant for the internal Video-slot (and build an converter such that it can be hooked to the external RGB) you might become a littlie hero ;-).

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Offline amiga_3k

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Re: Scandoubler schematics
« Reply #1 on: April 08, 2007, 06:36:33 PM »
So basically, now Clone-A is functioning, Individual Computers should now re-implement Amber? ;-)
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Offline amiga_3k

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Re: Scandoubler schematics
« Reply #2 on: April 09, 2007, 04:47:01 PM »
@Jose:

The scandoubler/flickerfixer actually performed brilliant (especially when using a little slowish CRT monitor) in the Amiga 3000. The 'combing' effect was never a problem for me as the SD/FF was only flickerfixing while using Workbench (can't remember a single game with high-speed grafics in interlaced mode). Only the standard mouse pointer had to be replaced by some hi-res mouse hack. So, for your average dtp work, playing about with PPaint and stuff like that is was really usable.
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Offline amiga_3k

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Re: Scandoubler schematics
« Reply #3 on: April 15, 2007, 03:13:03 PM »
Based on my experiences I think that it is rather accurate to say that the bigger the tube you're watching, the higher the refreshrate should be to create a solid picture.
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Offline amiga_3k

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Re: Scandoubler schematics
« Reply #4 on: April 15, 2007, 06:00:27 PM »
Would it be possible to combine two of those rather low-budget 16-bit chips? It should, in my theory, give 32 bit, giving 8 bit reserve.
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