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    Bizarre issue with NTSC C64 - running too fast?!?

    Great detective work. Glad another system is restored to function.
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    Classic Mac OS WiFi Supplicant For 68k?

    I'd just use one of the WiFi game adapter boxes.
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    PowerMac 6500 PCI graphics card options? (Feeling overwhelmed)

    I use a Twin Turbo in my 6500, but for a specific purpose: it's 2D accelerated in BeOS, which is its primary OS. My TAM just uses the onboard Rage.
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    USB / FireWire PCI combo card for a Power Mac 6400 ?

    ISTR (perhaps trag can elucidate) that there is some issue with cards with PCI-PCI bridges and the 6400/6500. That said, my TAM had a Sonnet combo USB-FW card in it and the TAM is basically a 6500, so I can recommend one of those.
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    What's this ADB dongle?

    I think they used the plastic from an Alcon container. I agree this is a homebrew device.
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    Bizarre issue with NTSC C64 - running too fast?!?

    That's all I got. You've stumped me on this one.
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    PLAY: logos64 - A Challenging Word Game for C64 - FREE Download

    I like what you're trying to do with Vision BASIC, and I'm sure for more modern users looking back it's a smooth way to start playing with the platform and doing "stuff." For me, though, I had a C64 in 1984 and I rapidly hit the limitations of things like Toolkit BASIC back in the day, and the...
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    PLAY: logos64 - A Challenging Word Game for C64 - FREE Download

    Very nice! I wrote a Wordle-alike for the 1K KIM-1: https://oldvcr.blogspot.com/2022/02/kimdle-sorta-wordle-for-kim-1.html
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    Oscilloscope view for Studio Session songs (1986, Bogas Productions)

    He also did a lot of work for Accolade. The C64 theme music for HardBall! was written by him.
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    Bizarre issue with NTSC C64 - running too fast?!?

    For the runs and runs part, my 64 service manual suggests checking the 7408 at U8 (and, of course, CIA #2 - always possible you have a double failure, though that wouldn't be my first guess). However, that doesn't explain the rest of what you're seeing, so I'm out of ideas.
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    Bizarre issue with NTSC C64 - running too fast?!?

    If you can't replicate the same issue on another breadbox with that power supply, then the 60Hz signal is probably OK. Do the symptoms show up with other software? You could try replacing the 8701, sure. However, I would expect a failure there would just black-screen the entire system.
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    PowerMac G3/266

    Personally, on a G3, I'd stay on at least 9.1 or 9.2.2. Mac OS 9 is better tuned for the G3 than older releases, though you're right that there's not a great deal of functional difference between it and, say, 8.6 (8.5 brought in the new nanokernel and more of the OS was PPC-native, so I wouldn't...
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    Greetings!

    Welcome! What cable news shows, or are you not at liberty to say? I suspect we have many prominent folks in our ranks in their respective professions.
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    PowerMac G3/266

    A nice find for $40, though I've always found the Gossamer G3s temperamental with anything *but* Mac OS.
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    Bizarre issue with NTSC C64 - running too fast?!?

    Check your CIAs and that you have a proper 60Hz signal on the AC power supply lines. That looks like the Timer A interrupt going crazy.
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    Welcome, I am.

    Welcome. Many of us are refugees.
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    Netatalk 2.2.7 Released

    Congrats. A good maintainer for an essential tool!
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    Vintage computer / recycling stores near LA or Las Vegas

    Many have closed. I used to be a denizen of Halted in the Sunnyvale area but I think it's gone now. For the LA area, the swap meets used to be the thing, but COVID killed a number of them and the remainder mostly sell consumer electronics.
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    PCI Based NICs?

    You could use the Apple ones. The PCI-based 10/100 NICs intended for PCI Power Macs have four LEDs (the Apple Network Server-specific variant has two and may not work). Those should "just work" with 7.5.2 and up.