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CincYnoTi

7800 Ballblazer prototype?

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I put this up on ebay today, not really sure if it is a final production version or what. Then I noticed on the screen shot that I took there is something I didn't recognize that made me start to wonder if it's NOT the final version. The second screen shows

 

Atari Corporation,

 authorized user

 

Any thoughts on whether this is a final version or some near-finished WIP?

 

IMG_8534.JPEG

IMG_8582.JPG

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Some dude sold a bunch of those on ebay about ten years ago. I have one as well. It is just the ROM chip stuck in a ZIF socket.

 

Mitch

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So that "authorized user" shows up on the released cartridge too? Sorry, I never really played Ballblazer before and don't have one handy to compare.

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On 1/5/2020 at 10:59 PM, Tempest said:

Yep I have one of those still as well.

Did any of the eproms that were sold with that zif board have any games on them? I've tried them all and... nothing. I don't even know if they are 7800 or 2600 eproms or something else. Only the Ballblazer chip works.

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8 minutes ago, CincYnoTi said:

Did any of the eproms that were sold with that zif board have any games on them? I've tried them all and... nothing. I don't even know if they are 7800 or 2600 eproms or something else. Only the Ballblazer chip works.

No, they were all junk data IIRC.

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So is this just a standard Ballblazer board with a ZIF socket stuck on it?  Nothing special? I'm thinking about harvesting the Pokey from mine.

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The board doesn't even work with EPROM's, the way it is.  You could take a Ballblazer, remove the ROM, put in a ZIF socket and you'd have the same thing.  Back in the day, I thought these were protos too, but they are not.

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As far as I have been able to tell, they are just standard Ballblazer carts with the Rom in a zif socket. Not sure why they originally were called protos.

 

Mitch

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That's what I wanted to know.  Pokey chip here I come!

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Huh, I just noticed mine says Atari 7800 Pokey Cart Rev at the top of the board where the one in the picture doesn't.  I guess there are variations.

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And... it's dead.  I thought I had all the pins freed when I tried to force it out and ended up snapping several off.  Oh well, guess I'm in the market for a pokey now.

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As long as there is part of the pin still on there you can solder the clipped off end of a resistor or capacitor on to it and it will work fine. I have done that a few times. A prosthetic Pokey pin.

 

Mitch

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4 minutes ago, Mitch said:

As long as there is part of the pin still on there you can solder the clipped off end of a resistor or capacitor on to it and it will work fine. I have done that a few times. A prosthetic Pokey pin.

 

Mitch

I think that's beyond my skill.  Maybe I can send it to someone to try and save?

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Got a pic of the damage? Could probably tell if it is salvageable from that.

 

Mitch

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6 hours ago, Mitch said:

Got a pic of the damage? Could probably tell if it is salvageable from that.

 

Mitch

It's not pretty...  The other side is still all intact (at the moment).

 

 

ballblazer.jpg

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That is definitely repairable. Do you have anyone local that can help you out with it?

 

Mitch

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1 hour ago, Mitch said:

That is definitely repairable. Do you have anyone local that can help you out with it?

 

Mitch

 ClausB is close to me, maybe he can help me save this.  Otherwise I can send it out to someone.

 

so your repair idea is to solder small wire bits to the pins?  

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Not actual wire.

When you install a new resistor or capacitor it always has longer leads than you actually need. After you solder the part in, you clip off the excess lead. Those extra clippings generally work well to fix chip legs. You just have to make sure you use ones that are thick enough not to bend too easily.

 

Mitch

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Best way to do that, is to insert the chip first and slide in the resistor legs from the bottom (solder side) of the board.

 

EDIT: Do this on a perfboard.

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On 1/21/2021 at 8:18 AM, Tempest said:

It's not pretty...  The other side is still all intact (at the moment).

 

 

ballblazer.jpg

 

Easy save there. Hell it might actually work as is cause of the whippers height on the socket.

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Also noteworthy to point out, not all pins are needed for the POKEY, check the pinout. ;)

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8 minutes ago, CPUWIZ said:

Also noteworthy to point out, not all pins are needed for the POKEY, check the pinout. ;)

They all look used to me.  I'm not sure which ones the 7800 needs just for sound. 

 

http://mixinc.net/atari/pinouts/pokey.htm

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