How to make an 8-Bit Atari Audio-Video Cable

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Charlie

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Do you own an 8-Bit Atari Computer? (Atari 800, XL, XE)

You've probably noticed the RF out is really bad.

What about that A-V (Monitor) port? Yes, you can get S-Video* or Composite* out of it but cables are hard to come by and, in my opinion, expensive - if of good quality. You could make one from scratch but that's a pain if you're lazy (like me).

IMO the following is the quickest way to a cheap cable that works, and looks like it wasn't lashed-up in the dark.

So here's what you need:
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Do a search on the otherBay for: S-Video Audio AV Cable for Sony PlayStation PS2 PS3.
2-3 quid with free postage is about the mark.

You also need a 180deg DIN-5 male connector (think MIDI). I got mine from Tandy as that served my twisted sense of humor.
Less than a pound with free postage.

You'll also need one of these:
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Required to buzz out the wires once you've hacked-off the PS2/PS3 connector. Get one that makes a noise on the continuity setting - makes life much easier. Mine was less than a fiver. Ok, a battery, a bulb, and some wire will do if you're really cheap.

Hack off the end of the A-V Cable:
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Kitchen scissors in my case, followed by carefully removing 1/2 inch of the black covering - careful not to cut the wires inside. A gentle slash with a kitchen knife will do!

Strip the ends, add flux, then tin with solder. Very, very basic soldering is required...

Once you've buzzed-out which wire does what, and written it down! Refer to the associated artwork for wiring up the DIN connector.

-Top-left shows the pin-out of the Atari port, also the solder-side of your DIN-5 connector.
-Top-right is the layout of the S-Video connector as seen from the end of the plug.
-The three below are a reminder that Comp-Video, and audio, are signal down the middle, ground outside.
(Video - Yellow, AudioRight - Red, AudioLeft - White)

-Ignore Streo Jack for now... :roll:

Ah, don't forget to slide the outside cover of your DIN connector on to the cable before you solder it all up! :picard

There's probably a separate ground for each connector - twist 'em together and solder on mass to Pin 2.
8-Bit Atari's only have mono-out (dual-POKEY anyone?) so twist L and R audio together and solder to Pin 3.
Comp-Video to Pin 4.
S-Video Luminance (Y) to Pin 1.
S-Video Chrominance (C) to Pin 5.

Before you slide the DIN connector cover in place buzz out the pins at the connector to make sure there are no shorts, and everything is connected at both ends as you'd expect - they are a b*gger to open again if there's a problem.

Done? Good. :D

Hopefully your's looks something like this:
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*Depending on your model not every 8-Bit Atari had all the pins at the A-V connector wired-up from the factory. WHY ATARI, WHY? Some slight modding of your motherboard may be needed...
 

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Nice hack! :thumbsup:

I've made an s-video cable for my 65XE from scratch but unfortunately the picture suffers from color bleeding even though the signals are shielded.

Charlie, how's the picture in yours?
 
Thanks for the kind words chaps. :)

The the result isn't bad at all - but not brilliant...

...that may not be the cable - I'm quite new to the world of 8-Bit Atari's. When I bought my 800XLF I was quite horrified by how bad the RF out was, even by RF standards, until a bit of Googling suggested these machines aren't so good in the video quality department.
As you probably know there are documented fixes for this issue which I've yet to apply - I'm currently engaged in trying to get a memory upgrade to work.

To give a rough idea I'd say my BBC Master (kindly donated by TC) gives the best output (RGB-SCART) very closely followed by the same machine outputting S-Video...
...my CPC128 comes a very close third via a home-built RGB-S-Video adaptor, and the Atari with this lead a little behind that - I suspect once it has had the video fixes it will be at least as good a the CPC when using the above lead.

As a small point I had to hack off the RF-shielding thingummy as there wasn't enough length to keep it and fit the DIN connector - keeping it may help things further.

Ah, and as you also probably know Atari craziness resulted in some of the pins on the monitor port not being connected for most XL's - either more mobo mods or stick with comp-video with another slight reduction in quality. (mine's ok ;))
 
Thanks for the kind words chaps. :)

The the result isn't bad at all - but not brilliant...

...that may not be the cable - I'm quite new to the world of 8-Bit Atari's. When I bought my 800XLF I was quite horrified by how bad the RF out was, even by RF standards, until a bit of Googling suggested these machines aren't so good in the video quality department.
As you probably know there are documented fixes for this issue which I've yet to apply - I'm currently engaged in trying to get a memory upgrade to work.

To give a rough idea I'd say my BBC Master (kindly donated by TC) gives the best output (RGB-SCART) very closely followed by the same machine outputting S-Video...
...my CPC128 comes a very close third via a home-built RGB-S-Video adaptor, and the Atari with this lead a little behind that - I suspect once it has had the video fixes it will be at least as good a the CPC when using the above lead.

As a small point I had to hack off the RF-shielding thingummy as there wasn't enough length to keep it and fit the DIN connector - keeping it may help things further.

Ah, and as you also probably know Atari craziness resulted in some of the pins on the monitor port not being connected for most XL's - either more mobo mods or stick with comp-video with another slight reduction in quality. (mine's ok ;))


I have found that the s-video mod on the 800XL makes a very noticeable difference. Pin sharp text and less bleeding and banding.

There are a couple variants of the mod. Perhaps the best is to just skip most of the built in circuitry (which is where a lot of the noise in the picture comes from) and do a simple little mod like this:

http://www.atariage.com/forums/topic/209136-kjmanns-s-video-upgrade-revisited-atari-400/


There is a link there to kjmann's 8 bit atari video mods.

Or you can do the Ultra Video mod:

http://www.atari8.co.uk/downloads/UltraVideo XL 1.0.pdf

Or the SuperVideo mod:

http://www.wolfpup.net/atarimods/supervid.html




Generally speaking, if you disable the RF modulator you loose composite video output, put you also clean up the s-video picture.


edit:

Also, there is the Quick and Easy Video upgrade for the 800XL:

http://www.atariage.com/forums/topic/41580-quick-easy-video-upgrade-for-800xl/

I have done this mod in the past and was very pleased with the results as I was able to maintain both s-video and composite output.
 
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Thanks for the links. :)

Yes, I was going to go for the quick & easy mod - seemed to be the best compromise to me as a new owner of Atari kit...

Here's a couple of photos I took with my 800XLF attached to a HD TFT TV using this lead. Not bad really for an Atari that hasn't had any video fixes, yet. :D

Apart from cropping the images haven't been fiddled with - nice saturation too. Interestingly the very best image quality is produced when both the S-Video and Comp inputs are hooked up - kind-of blends out a very slight dot-crawl...
...then S-Video alone, then Comp alone. Slight reduction in quality if via a SCART adaptor.
 

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That's a very nice looking display! :thumbsup:

Mine bleeds red color on the letters. Don't know, perhaps I should get one of these Playstation S-Video cables and mod mine from that like you did.
 
Thank you, I have made UltraVideo XL 1.0 modification on my 800XL, but I had only b&w video. I must make a new s-video cable.
 
Thank you, I have made UltraVideo XL 1.0 modification on my 800XL, but I had only b&w video. I must make a new s-video cable.

Most kind of you maiky - I hope you find this mod works as well for you as it did for me. :)
 
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