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ClausB

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  • Gender
    Male
  • Location
    Michigan
  • Interests
    space and rocket history, astronomy, photography, math, computer programming, physics, digital electronics, Atari, aviation, sports cars, Star Trek, Star Wars, Doctor Who, my family, to name a few

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  1. ClausB
    Request: SpaceX Starship launch:
  2. ClausB
    All the 44256 chips I've seen need 512 refresh cycles (9 bits). They won't work without extra circuitry to generate the extra bit. Good luck finding 256Kx4 chips with 256 refresh cycles.
  3. ClausB
    Request: album cover: Dark Side of the Moon
  4. ClausB
    Could they make a decent case for a 400, which has all flat sides?
  5. ClausB
    Very thin coat of solder might work. Older RAM boards were 'tinned' this way. They do corrode more quickly than gold and need reseating or cleaning, but carts get swapped in and out more often than RAM.
  6. ClausB
    I don't recall. Maybe we used whatever FJC's video recommend.
  7. ClausB
  8. ClausB
    A little 3D wireframe animation:
  9. ClausB
    Star Raiders! Oh, wait...
  10. ClausB
    They might have lowered prices on the 400 and 800 sooner to slow the success of the VIC20.
  11. ClausB
    Yes. It doesn't matter unless you're replacing faulty DRAM chips.
  12. ClausB
    Could they be Freddie chips? Or maybe PIA chips for banking?
  13. ClausB
    Gotta look at the data sheet.
  14. ClausB
    No, the 7-bit ANTIC would only refresh half of a 256 cycle DRAM, so the other half would fail.
  15. ClausB
    128 cycle 64K DRAM chips are more compatible because some 800XLs have the older ANTIC with 7 bits refresh addressing.
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