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Type: Posts; User: MikeS

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  1. Replies
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    It depends on the particular EPROMs you're trying...

    It depends on the particular EPROMs you're trying to program; many of the newer programmers can not handle some of the old 25/27xxx type EPROMs, especially those requiring 25V Vpp.

    What are the...
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    Looks like we both messed up; it's 901447-10 ;-)...

    Looks like we both messed up; it's 901447-10 ;-)

    Yes, AFAIK they all worked the same way although the -08 was UC/graphics vs. UC/LC for the -10 so the poke essentially worked the opposite way,...
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    It's definitely confusing, in part because the...

    It's definitely confusing, in part because the identical images are listed under two numbers, the 6540 versions (901439-xx AKA 6540-xxx) and the 2316 versions (901447-xx), and to complicate things...
  4. I've repaired a few in my time (and given up on a...

    I've repaired a few in my time (and given up on a few more) but I think it would be pretty challenging to troubleshoot mechanical issues via email...
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    Thank you!!!

    Thank you!!!
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    Just following up: Did you get through? m

    Just following up: Did you get through?

    m
  7. I think you and I discussed this when you were...

    I think you and I discussed this when you were designing the original version and I still think it should have a passthrough connection so you can copy files to/from a real disk drive and use a CBM...
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    Congratulations! Looks great! I'd love to have...

    Congratulations! Looks great!

    I'd love to have the contact information for those decals; can you share them, please?



    Have FUN!!

    m
  9. Pretty sure I scrapped one of these for parts...

    Pretty sure I scrapped one of these for parts long ago; not sure what works though, and shipping's probably too high to take a chance...
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    There seems to be some confusion... ...

    There seems to be some confusion...





    Absolutely wrong! The TI 2532 is NOT the same as others' 2732; the TI 2732 is.


    What is confusing is that the 2716 2KB EPROM had 3 separate pins for...
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    Yeah, we've met some folks on here with amazing...

    Yeah, we've met some folks on here with amazing patience and persistence, way more than I can claim, and when all was said and done, almost all of them were rewarded with a working PET. Very...
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    http://store.go4retro.com/adapters-1/ ...

    http://store.go4retro.com/adapters-1/

    http://www.6502.org/users/sjgray/projects/multieditrom/index.html
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    http://www.verrua.org/pet_repair/ (about 1/2...

    http://www.verrua.org/pet_repair/

    (about 1/2 way down)
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    Two points: a preset playback level that really...

    Two points: a preset playback level that really simplified things, and the ability to monitor sound through the speaker even though the cable was plugged into the earphone jack.

    And a counter of...
  15. Thread: Petsoft Graphics

    by MikeS
    Replies
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    342

    Thanks for sharing!

    Thanks for sharing!
  16. The barrels from dried-out ball point pens are a...

    The barrels from dried-out ball point pens are a good supply of spacer material and they're insulated, so no risk of shorting the PCB to the chassis.
  17. Replies
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    Both on the same page, 2001N/320349-6.gif ...

    Both on the same page,
    2001N/320349-6.gif

    J7:
    1 - Video (p.8, top right)
    3 - Vertical (p.6, mid right)
    5 - Horizontal (p.6, bottom right)
    2, 4, 7 - GND
  18. Thanks again, Mike!

    Thanks again, Mike!
  19. Interesting; are these FDC mods documented...

    Interesting; are these FDC mods documented somewhere?

    TIA
  20. Thread: Pet Rescue

    by MikeS
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    1,670

    ... and thanks for solving the mystery ! (All...

    ... and thanks for solving the mystery !

    (All my DIP 6540 adapters are V2.0 ;-)
  21. Thread: Pet Rescue

    by MikeS
    Replies
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    1,670

    There ya go! Very nice! Still hope to hear...

    There ya go! Very nice!

    Still hope to hear from Jim about those odd adapters; might email him directly.
  22. Well, there is the possibility that the speed is...

    Well, there is the possibility that the speed is too far off; time to check it the hard way as Mike suggests ;-)
  23. True enough, but incandescents are getting as...

    True enough, but incandescents are getting as hard to find as 'real' fluorescents and certainly not nearly as clear. But if that's all you've got...

    BTW, Mike, let me take this opportunity to...
  24. It has to be a 'real' oldskool fluorescent, not a...

    It has to be a 'real' oldskool fluorescent, not a newfangled compact fluorescent (CFL) bulb, or you could try an LED powered from a low-voltage AC power brick through a resistor.
  25. Thread: Pet Rescue

    by MikeS
    Replies
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    1,670

    Yup, that was my suggestion; forget the resistors...

    Yup, that was my suggestion; forget the resistors & '138, add a couple of jumpers and use 3 x 32K EPROMs; just make sure you put them in the right socket. No issue with the E ROM, just use a 2716...
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