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  1. Trash80toHP_Mini

    ITXPlus: A ITX Sized Macintosh Plus Logicboard Reproduction

    I don't even see room for a power supply? Would it be at the front of the case or is PicoPSU implementation specified by the mfr?
  2. Trash80toHP_Mini

    Mac Plus 68020 Accelerator

    In house Mac Plus upgrade card for 68020 coding makes a world of sense. I'd like to see how that PSU contraption looks installed on the an open Plus chassis. Why button them up at all? Might that oddly placed fan have been pointing at the hottest parts of the Plus A/B? If David Ramsey...
  3. Trash80toHP_Mini

    ITXPlus: A ITX Sized Macintosh Plus Logicboard Reproduction

    Is that an ITX case? I don't see provision for an expansion card or is that a perforated backplane cover plate?
  4. Trash80toHP_Mini

    Mac Plus 68020 Accelerator

    That makes a lot of sense in the context of my Folklore read, But why 12MHz parts, if indeed they were such as seemingly marked? Was an 8MHz 68020/FPU combo ever even released? That's what I was wondering about, makes a lot of sense. I tke it thad downshifting from 16MHz to 8MHz is more easily...
  5. Trash80toHP_Mini

    Mac Plus 68020 Accelerator

    Yep on 16MHz clock halving done on the Compacts* ** logic boards to generate the 8MHz CPUCLK. But nope, that'd require a bodge to tap the 16MHz clock line at source somewhere on the Plus logic board on installation. That would radically violate the KISS principle. ;) Plus predated C16M on the...
  6. Trash80toHP_Mini

    Mac Plus 68020 Accelerator

    That doesn't stop the Performer from running at 16MHz sans crystal. The difference between Classic and SE versions of Performer are the GAL at U7 next to the SE PDS slot with what became the standardized 16MHz reference clock in its pinout. Assuming the clock doubling formulas (phase lock...
  7. Trash80toHP_Mini

    Mac Plus 68020 Accelerator

    Unless 12MHz is a magic number for running Logic Board->Analog Board->CRT Neck, I really can't see any point in Apple looking at something like this? Prototype s boards seem to have been marked as such, but this one may have been special enough that no mistake could have been made. That custom...
  8. Trash80toHP_Mini

    Mac Plus 68020 Accelerator

    If CPU and FPU (marked 12MHz?) are really only running at 12MHz it's no wonder nobody has seen this thing. It would then only be half the performance kick of the 16MHz Performer that we've already cloned. When was the 16MHz 68020 released? Radius16 was one of the first Accelerators for the Mac...
  9. Trash80toHP_Mini

    suggestions to pack & ship a (black) 5500

    Cool, I'd consider myself lucky. Did you remove the lower bezel bits for the trip? I would have. ;)
  10. Trash80toHP_Mini

    suggestions to pack & ship a (black) 5500

    I wouldn't wanna bet on a long car trip with the CRT face down strapped into the back seat. Don't is the best answer I've read.
  11. Trash80toHP_Mini

    "portable"/"slim" 6200/5200

    Glad this popped up again. One of my first manic, worked 'til dawn hacks was installing Q630 board/OEM PSU/FDD into the backside of a Sharp word processor/printer. Nice little portable case with a handle on it. If interested I can take some pics, currently has 6290/Reply DOS Card setup...
  12. Trash80toHP_Mini

    Logic Analyzer + AI = ?

    Anyone have the Radius FPD card for Plus/512ke to donate, trade for or sell for my cloning project? https://tinkerdifferent.com/threads/radius-full-page-display-for-macintosh-512ke-plus-cloning-project-possibilities.4326/
  13. Trash80toHP_Mini

    Logic Analyzer + AI = ?

    Thanks! Tried it, but for anything more recent than 2022 it suggests https://scinet.usda.gov/ It's looking more and more like the function of any given Programmable Logic can be noodled out and reconstructed via AI. Reverse engineering an entire circuit board is mentioned. If I can get one of...
  14. Trash80toHP_Mini

    Logic Analyzer + AI = ?

    Wondering if anyone has seen AI used to crack protected programmable logic? Target chip is the PLDC20G10 on my current obsession, the Radius FPD for Mac Plus. https://media.digikey.com/pdf/Data Sheets/Cypress PDFs/PLDC20G10B, PLDC20G10.pdf 24pin DIP IC provides up to 22 inputs and 10 outputs...
  15. Trash80toHP_Mini

    Has anyone been able to install MacOS 8.6 or 9.2.2 on a Mac II or Quadra with a PowerPC upgrade card?

    1400 tops out at 9.1, I have that running nicely on my 1400c/G3. From what I've seen, all 603e machines have that same 9.1 ceiling?
  16. Trash80toHP_Mini

    FWB SCSI Jackhammer.

    I'd test it with one of the Fast/Narrow SCSI II to SD products like BlueSCSI. Likely cheaper than finding SCA drive+adapter+cable?
  17. Trash80toHP_Mini

    modern PSU replacements for Powerbooks / iBooks (in Europe)

    https://tinkerdifferent.com/threads/powerbook-1xx-usb-c-pd-adapter.3827/post-32201
  18. Trash80toHP_Mini

    Listing of ReMix Logic Board Projects?

    Amazing progress has been made in terms of complexity wondering where we'll be within the next ten years? Anxiously awaiting a hybrid Q630 leading into PPC versions of the platform. Really needs provision for more memory and pathway to install a great VidCard for both platforms. 🤞
  19. Trash80toHP_Mini

    More 7100 fun

    I'd suggest holding on to them. The way things are going with remix boards in terms of complexity, the 7100 will almost certainly become a target within the next ten years. So proprietary 7100 silicon will go up in value monetarily and preservation status. NuBus PPCs are a short lived...
  20. Trash80toHP_Mini

    PowerBook 100/CM4 - Convert Analog Brightness/Contrast wheels to Digital Inputs?

    Still need the NEUTRAL position, is that doable under your setup? Yep, replacing all the guts of the PowerBook 100. But it's the Compute Module version that came out a few years ago. CM5's out, but sticking with the original concept for dream machine...
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