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CircuitBored

CircuitBored

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  • CircuitBored
    Quads always be Quaddin'

    IMG_2350.jpeg
    • Confused
    Reactions: demik
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    CircuitBored
    CircuitBored
    @Byrd any tips for removing the sulfate(?) or is this a "get a new block" situation? I know copper sulfate is water soluble so I was considering boiling the block in water
    CircuitBored
    CircuitBored
    FWIW I am no chemist so the above may be a horrible idea
    Byrd
    Byrd
    More gentle method would be using citric acid, immerse for several hours, however be ready it’ll probably look worse once corrosion is dissolved (especially around the barbs)
    CircuitBored
    PSA: If you wrap a PowerMac G5 Quad in polythene sheeting and then pull it through a busy London station on a homemade trolley, you are going to have a conversation with the British Transport Police...
    CircuitBored
    It took me more than a year to actually finish it but I finally released a new video - I'd love it if you checked it out. Thanks!

    M
    Anyone know where I can get a Stealth Serial Port card for a mac g4
    CircuitBored
    CircuitBored
    I am currently waiting on parts to arrive for my clone of the stealth serial port and will let you know when the kits are available.
    CircuitBored
    Has anyone else noticed that ebay's "Vintage Computing" section has been overrun by trash-tier early-00s x86 desktops at ludicrously high prices? There's always been an element of that sort of pricing but now it seems like everything is £100+ as standard.

    Don't even get me started on how expensive the actually-interesting Sun Ultra workstations are now :(
    • Sad
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    Iesca
    Iesca
    @finkmac "Did you mean...?" "NO, I really would like to search for the thing that I typed, thankyouverymuch."
    finkmac
    finkmac
    oh its even better because it'll be like "oh we thought you were searching for this, here are 20,000 listings". and if you click "search for what i typed" it returns like 100 listings
    • Haha
    Reactions: Iesca
    M
    max1zzz
    Even RS components dose that now, drives me up the wall. "Here's 100 random items rather than just saying we don't stock the thing you searched for". Though if we are moaning about search features I would like to complain about how searching by price on ebay / amazon magically makes half the results disappear.... Strangely it's always the cheaper results that disappear....
    • Angry
    Reactions: Iesca
    CircuitBored
    Oh, what fresh hell is this?
    IMG_0258.jpeg
    CircuitBored
    IMG_0083.jpeg

    Ghostly SE/30
    CircuitBored
    This is hands-down one of the strangest things I've ever seen in an electronic device. Do we think it's there for ease of replacement or because someone said "sod it, put it wherever it fits"?
    IMG_7402.jpeg

    (Sony HVC-3000P)
    • Like
    Reactions: Snial
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    Phipli
    Phipli
    Agree with demik.

    Used to be common to find high power parts thermally coupled to the chassis or case. Weird thing is that it isn't mounted from the PCB, but perhaps they were expecting vibration / movement?
    CircuitBored
    CircuitBored
    @demik @Phipli oh yes, I've seen the chassis used as a heatsink plenty. I've just never seen a component like this just floating, connected only by a block connector! Having given the rest of the unit a once-over it seems like they really had no other place to put it, as the two main control boards are quite surprisingly air-gapped from the chassis, save for some grounding wires.
    luRaichu
    luRaichu
    CircuitBored
    I thought this was the coolest setup back in the day. This was right at the tail end of PPC's relevance.

    2012-08-04 19.16.48.jpg
    • Like
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    Snial
    Snial
    I think PPC is still relevant!
    1. It proved the principle of emulation for jumping CPU architectures! (cf the history of 286, x86, x64, ARM64 emulation mess in Windows: http://www.emulators.com/docs/abc_arm64ec_explained.htm)
    2. It took us into the Mac OS X era and 64-bit era (just).
    3. It took us close to max GHz!
    History_SE30_Dude
    History_SE30_Dude
    For a long time I used both my 1.42 MDD and a Intel Mini in a similar setup. I found some software I can't remember the name that allowed me to use my keyboard and mouse across both systems it worked really well from what I remember. I thought I was super cool with that setup.😎🤓
    CircuitBored
    CircuitBored
    @Phipli The second computer was a Quicksilver, which I upgraded to dual 1GHz not long after this photo was taken. The eMac can indeed only mirror its video, sadly.
    CircuitBored
    CPU photos, eh?

    IMG_8802.jpeg
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    Snial
    Snial
    68030 Hey, I guessed right! I wondered if it was a 68000 to begin with, but then I counted the pins and figured it was about 126, so started googling for CPUs with about that many! It's defo not a Transputer, they have 84 :-) !
    Phipli
    Phipli
    1280px-Motorola_MC68030RC33B.JPG


    There is always the photo on the Wikipedia article to compare against. But I didn't think to go searching.
    • Like
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    CircuitBored
    CircuitBored
    It is a rather pretty bit of silicon, I must say!
    • Like
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    CircuitBored
    Behold: The Umapple Power Macintapdra C16350ci
    IMG_7223.jpeg


    Fear it.
    • Like
    • Love
    • Haha
    Reactions: RetroTechTom, Durosity, Arbee and 6 others
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    Snial
    Snial
    Yes, it's less like a 1990s PC than the PM4400 was. I remember taking my beloved PM4400 apart to add RAM or cache or a PCI TV card and being aware of how razor-sharp all the burrs on the casing were as well as how much effort it took to prise the casing apart: just like a PC, about to inflict war-wounds on the faithful.
    • Like
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    CircuitBored
    CircuitBored
    @joshc It's grown on me a lot, I just wish it wasn't ever so slightly wider than a Q650 so I could stack them more neatly.
    • Like
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    Snial
    Snial
    I've been doing some performance analysis on the 603e at 160MHz. Because it, like the 601, 604 and 750 all have one FPU it's relatively strong on FP. I estimate that with the MrC compiler (not MW) it could achieve 115MWhetstones/s, making it 20% faster than a Cray-1 at 98MWhetstones/s in vector mode (it helps that it all fits in L1 cache :-D ). The 603e is a SuperComputer!
    CircuitBored
    I stitched these magazine pages together for a project I'm working on - here's some PowerPC-era goodness.

    pinnacles improved.jpg

    Filling in missing imagery is not something I've ever attempted in a photo editor before. The original two pages were missing the inside edges so I had to re-fabricate the edges of the two monitors on the right and create some mountain and sky.
    CircuitBored
    Tiger, tiger, burning bright
    In the disc drive, out of sight.
    What immortal Mac of i
    could tame thy instability?

    What update could stabilise
    Unix system's fourth reprise?
    You will find yourself in heaven
    (Once you upgrade to dot eleven)
    CircuitBored
    OVERTEMP
    View previous comments…
    CircuitBored
    CircuitBored
    @cheesestraws I am having defenestrative urges toward the Quad right now. It sure would be colder out there...
    Phipli
    Phipli
    Grumble grumble still no heating grumble.
    20231018_202321.jpg
    • Wow
    Reactions: joshc
    CircuitBored
    CircuitBored
    Well, it turns out that PC coolant has a shelf life of only three years. For some reason I thought the stuff I have would last five years. Ah well, time to completely flush and refill the Quad again... might be a good opportunity to attempt to cram a reservoir in there.
    CircuitBored
    It is now cold enough for the Quad to come out of hibernation! After a coolant top up and a bit of fan lubrication she is sitting pretty and ready for space heater duty.
    IMG_6916.jpeg
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