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ok, order is in for 80 column board along with an adapter board, 2716 eproms are pretty scarce these days, I think I have 1 kicking around here somewhere. anyway, 2716 to AT28C64 or AT28C256 will fit even tho only 2K of space can be used. limitation of the 80cvc board design.

 

Ken

 

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On 10/10/2021 at 10:26 PM, kenames99 said:

hi,

  I just finished putting the 80 column card into kicad. here is a pic generated by kicad. Some components changed, like the video out jack and rotary switch, no current replacements available. I would like to know if there is any interest in this or any of the 1090XL and associated boards to go with it. this represents quite a few hours of time for each board so I would like to know if this is a waste of my time. I know some have said they want to see these, like post #2 in this topic, along with some others. and I appreciate your support. I am going to order 5 boards to test design and operation. I will likely keep 2 and will sell the other 3 most likely as bare boards.

 

Ken

 

80cvc.jpg

What video chip does this upgrade use?  Is it monochrome or does it support colour?

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29 minutes ago, Stephen said:

What video chip does this upgrade use?  Is it monochrome or does it support colour?

Would be sweet if it were on par with the c128!

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hi,

  it uses the 6845 controller and is only set up for monochrome on this card, it's a start.

 

Ken

 

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hi,

  Just a quick post to let everyone know, the 80cvc cards arrived today. now to wait on the parts to assemble. sorry for pic quality.

 

Ken

 

20211021_170135.jpg

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Luckily, they look like a pretty easy card to put together. Of course, anything seems easy after assembling a 1088XEL or XLD motherboard!

 

I look forward to watching the progress.

 

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On 3/14/2021 at 9:30 PM, kenames99 said:

hi,

  A while ago, before Curt Vendel passed away, we were colloberating on a reproduction of to 1090xl expansion box. I was remaking the board and Curt was going to do the mechanicals parts. I do not know how far he got but I got the board design done. I never had the chance to get it produced. would there be any interest for me to put this on a github repo?

 

thanks

Ken

 

1090XL.jpg

For what it's worth, when I was over there last month beginning to catalog everything he had a 1090 and related documents on his desk (next to his XM project area). Now I know why that was there.

 

 

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hi Retro Rogue,

  wow, sounds very cool indeed! hope you had fun and got a lots accomplished, what a task tho. been having fun with this whole project, am currently working on the 80 column board. currently not working so gotta find what I did wrong. would you be able to provide some hi res pictures?

 

  did you ever get the atari museum site back online? I am really looking forward to that.

 

  also, a quick note for everyone, dont use the linear regulator on the ram board! put in a switching regulator instead, TPSM84205 should do a good job - available thru most sellers, and do not install the 22 ohm 2 watt resistor. I had a voltage surge here and it killed my ram board.

 

   Good to see you around here.

 

Ken

 

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Bitter sweet reading.  On the one hand, we have the sadness of Curt's passing.  But on the other hand, if his (this applies to everyone, please nobody feel slighted) work continues, then memories remain which is a happy thing.

 

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Ken,

Do you have a copy of the 1090 RAM CARD test?  I have an EPROM laying here with that marked on it (and not sure if its valid).  I wasn't sure if that was available off the Museum site or not.

I also just remembered that there was a 1090 AMY card schematic.

 

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Ken,

 I told one of my friends about the 1090 XL. Will this, by any chance, work on the 65XE, 130XE, and the XEGS?

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Never the XEGS, maybe the 130XE with an adapter, (US 65XE does not have ECI)  But... not sure why one would do that.

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1 hour ago, SlidellMan said:

Ken,

 I told one of my friends about the 1090 XL. Will this, by any chance, work on the 65XE, 130XE, and the XEGS?

Hi,

  It will work on any atari with the 50 pin edgecard connector or xe series with the cart and eci connector and add on xe2pbi adapter.

 

Ken

 

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