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(Topic ID: 205852)

Gottlieb system 1 Z 22

By Doggy

6 years ago


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  • Latest reply 4 years ago by Sheprd
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    #17 6 years ago
     
    ABH

    acebathound

    Pinitech

    12y 89,050 2,585

    Quoted from CactusJack:

    In my design, I used the Simtek STK12C68 NVRam chip instead of the FRAM. It's the same one I used to do NVRam on System 3 Gottlieb boards.

    Nice! This is actually where I was headed with my own System 1 nvram adapter. Pretty much arrived at the same conclusion with the SIMTEK part being needed after seeing my latest prototype from mid-2017 worked fine with 6264 SRAM, but not with the RAMTRON. I had SIMTEK parts laying around but totally forgot to throw one of those in before selling the Buck Rogers I was testing in 1st quarter 2017.

    [edit] Talked with CactusJack via PM and will be working something out together on current boards he has. Stay tuned

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    #19 6 years ago
     
    ABH

    acebathound

    Pinitech

    12y 89,050 2,585

    Quoted from CactusJack:

    Or, I can send you one of mine!
    I think we were brainstorming together in that other technical discussion thread. I originally laid out Rev 1 with the FRAM. When it didn't work, I kludged together one with the SIMTEK part and it worked.
    Also, the reason for the funky, confused schematic layout is due to me re-assigning various pins in order to streamline the trace routing. I ended up with only 1 via in that final revision. And by using the through hole Dips, I was able to straddle the 5101 socket to shrink it down a little more.

    Sure, let's do that. PM me with what you want for one or two of them Assembled or bare boards.. whatever works.

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    #20 6 years ago
     
    ABH

    acebathound

    Pinitech

    12y 89,050 2,585

    Just an update on the nvram boards..

    I'll be making CactusJack's boards available over at http://www.pinitech.com likely around mid-January.

    Should have 5-10x of them available right off the bat with parts on-hand. They'll be the red boards as CactusJack posted pictures of earlier in this thread. Happy to work with him on this since he had the extra boards. Good way to test the market for them!

    Anyone interested in getting in on the initial batch of orders, send an email/PM. I'll then notify when they're ready to ship.

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