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Atari 800 with VBXE possible?


commander

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I have been wanting to do just that, but I'm not going to buy a VBXE until I know it will work.

 

It should be electrically and logically possible, at least if you have an Incognito. What I want to know about is the physical installation. I don't think there is room for it to sit on top of the CPU card, so a ribbon cable from the GTIA socket would be needed. This ribbon cable may cause RF problems. It also may not.

 

We need to know...

 

Any volunteers to attempt this? Lotharek, Candle?

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I wonder if you could use the "Test Points" located at the rear of the Main board on the 800? Then you could use a card edge connector with a ribbon cable. You might even be able to run the ribbon cable out of the back of the case of the 800, making it an external expansion port of sorts.

 

...or you could make a dummy-card that fits into a slot where RAM would normally go, and just run the ribbon cable from the Test Points over the top of the OS board & use a card-edge connector to hook it up to a multi-conductor edge on the top of the dummy RAM card.

 

That is, if the signals that you need are accessible from the Test Points.

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I wonder if you could use the "Test Points" located at the rear of the Main board on the 800? Then you could use a card edge connector with a ribbon cable. You might even be able to run the ribbon cable out of the back of the case of the 800, making it an external expansion port of sorts.

 

...or you could make a dummy-card that fits into a slot where RAM would normally go, and just run the ribbon cable from the Test Points over the top of the OS board & use a card-edge connector to hook it up to a multi-conductor edge on the top of the dummy RAM card.

 

That is, if the signals that you need are accessible from the Test Points.

nope, signals you need are on the antic socket. mostly. Also, there's not room to get on the test points connector with the machine closed I think.

Edited by Joey Z
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There is plenty of extra space in the 800, also the hole in the back for the RF cable could be used for the VBXE out. There is even enough room in there that a VGA converter could also fit.

 

My idea has always been a custom CPU card with VBXE AND Rapidus on it, as a perfect companion to the the Incognito.

 

Yeah, I know I have said this many times now, bit I think it's a good idea, and I hope it catches on so others will think about it (and produce it)...

 

If I ever would happen into a large sum of money (which is unlikely, but nevertheless remotely possible), the above mentioned card, and a 1450XLD remake would be my top priorities. A decent place to live would by necessity be also included in the priorities, but hopefully the sum would be large enough to cover all of the above :)

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It will work, I did it as a test for someone when Incognito was released, havnt gotten to actually finish the install by putting it together yet. But if you work out the logistic of physical install it works beautifully.

 

I used a ~5inch 40 pin ribbon cable on the Antic/VBXE and planned on making a small slit in the shield to mount the VBXE in the open space on the left side, three people have acutally asked me to do this when its complete.

 

sloopy.

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As Sloopy said,

4-5 inch extension cable and standard xe (or just simply vbxe 2.1 board) is fittable

standard version, without extension cable - no matther how hard i would try ends up 3mm too tall fo fit inside metal shielding - and i would not want to use either mill nor hacksaw for this kind of job

one side of the cable would have connector like this: http://www.tme.eu/pl/details/awhp-40b/zlacza-idc/connfly/ds1015-40nn0a/#tb76f961d2435db20d8191a0563221819

and the other, plain idc40 connector: http://www.tme.eu/pl/details/awp-40/zlacza-idc/ninigi/#t1694d75015d31d0debb7ac6f7cdd77a8

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