Colour A500+ composite output?

[mjnurney]

I like the sound of this - I was considering pulling a 520 apart and fitting it in the 500 but your idea is much neater and smaller too.

At some point I will hack a 520 to give better colour , my 520 is a bit blurry

 

[Merlin]

What about the A2000? B&W too?

Yes Xanxi, the A2000's composite out is monochrome. The device Keith and I are talking about could be fitted to the A1500/2000 models too.

 

[Zetr0]

...
This enables the A500 to catch up with the A600 & A1200 with full colour composite out. It could probably be hacked into other retro hardware too - bonus!

Put me down for a couple right now.

What to call it? How about the Colour Wizard..??

Now, this gets a +1

a small integrated board wont cost much, arguably about $10 - $15 pending the cost of the CX1145 / compatible encoder replacement..

This would work on anything that had an an analog RGBHV / RGBS output - so that would be any Amiga, Spectrum 128K +3, Spectrum 128k +2AB, CPC 464, CPC 6128 and more....

However I should stress that a better signal can be achieved from the RGB scart output would be worth persuing first.

With a little more electrickery, this concept could be taken over to work on TTL RGB as well, so things like the Acorn BBC's, Spectrum 128k, Spectrum 128+2, Sinclair QL even the RGBi of the Commodore 64/128 to name but a few.

 

[Merlin]

This would work on anything that had an an analog RGBHV / RGBS output - so that would be any Amiga, Spectrum 128K +3, Spectrum 128k +2AB, CPC 464, CPC 6128 and more....

However I should stress that a better signal can be achieved from the RGB scart output would be worth persuing first.

With a little more electrickery, this concept could be taken over to work on TTL RGB as well, so things like the Acorn BBC's, Spectrum 128k, Spectrum 128+2, Sinclair QL even the RGBi of the Commodore 64/128 to name but a few.

Me Likes! :nod: This could have a *lot* of potential for the retro computer (and possibly console) scene.

Am I right in thinking that this could possibly output S-Video too..??

 

[Zetr0]

@Thread

Here is the fujitsu (CXA1145) compatible -

MB3516A (data sheet)

Now off to find a cheap supplier =D

 

[Tajmaster]

Is anyone working on a guide on this mod?

 

[Merlin]

Shhh! Geniuses at work.....:shhh:

I have a lot of work on right now, but I will come back to this with the big Z...

 

[mjnurney]

nice

 

[Tajmaster]

Awesome! I come by A500s all the time and it'd be great to mod them all with this as well as my own

 

[TheCorfiot]

This afternoon I finished debugging and testing some prototype boards that provide composite video and s-video output from the Amigas RGB connector.

They can operate in PAL 4.43MHz or NTSC 3.58MHz via a switch.

Will post up some piccys tomorrow but the S-Video output is superb

Have to think about options and configuration as well as platform compatibility before I start laying out a final PCB for manufacture.

To help does anyone have a spare Atari ST 13pin video connector to donate so I can design in this option, in the meantime I will start trials to add TTL RGB capability using my trusty BBC Micro.

Dont get too excited folks still a bit of work and testing to go before commiting the design and ordering parts.

Hope its good news

TC

 

[johnim]

nice one TC mate

 

[Tajmaster]

Thanks for the update TC, looks like youre making great progress

 

[mjnurney]

Great work tc

 

[TheCorfiot]

As Promised ---- Pix
The Final Board size will be half of the prototypes and have capability for TTL RGB as well as separate sync inputs, and of course The ST, ie dual supply +12V or +5V

Does anyone have a spare 13pin Atari ST connector chaps

TC

 

[mjnurney]

fantastic work

 

[Tajmaster]

:wooha: thats cracking quality! Is it going to be external? If so, is there a way to make it internal?

 

[Merlin]

Bas and I were discussing the headers on the board and as the final versions will be smaller than the prototypes, you should be able to connect internally to most systems.

The intention is to make this cross-platform, so you can fit this to BBCs, Spectrums, C64s, etc.

We are also looking into parts supplies, to ensure that we can produce these in volume.

Patience; more testing is needed, before the design is finalised.

Good things come to those who wait.....

 

[Tajmaster]

Any progress on this gents?

 

[Tajmaster]

Any updates on this gents?

 

[TheCorfiot]

Trying to find a cheap source for the chip...

AD724JRZ

If anybody wants to help out sourcing it I would be most thankful

Oh & still waiting for some kind person to donate an ST 13 Pin DIN plug

TC