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joevt's latest activity

  • J
    joevt replied to the thread G4 MDD RAM recognised at wrong size.
    Notes about RAM timings affecting detection of 3 or 4 DIMMs...
  • J
    joevt replied to the thread upgrading the ibook clamshell's L2 cache to 1MB.
    Did you try to open a file? Config Block Editor can open files with creator of cbif and type brom or ROM . These can be a 1MiB firmware...
  • J
    joevt replied to the thread LCD Replacement for the Macintosh Portable.
    M5120 and M5126 are two models of Macintosh portable where the latter is backlit and the former is not. Ribbon cable and flat flex are...
  • J
    joevt replied to the thread Q840av gets a make over.
    My Power Mac 8600/200 is also J38. My Power Mac 8600/200 does not have either BoxID bits tied to the centre pin (/BoxPD). In the 9600...
    • Power Mac 8600 200 Power LED J38.jpeg
  • J
    joevt replied to the thread PM8500 - av video out.
    It may be possible to just remove sixty6 from the device tree to ensure that it's driver is not loaded and that you get the full 4 MB of...
  • J
    joevt replied to the thread PM8500 - av video out.
    FF7F means there's a connection to the composite video output. This needs to be fixed. I don't have Power Mac 7500/8500/8600 schematics...
  • J
    joevt replied to the thread PowerBook 3400c - How To Remove Unwanted Security.
    Move it to the trash and restart? Moving folders to the trash does not affect files that are already open. When you restart, the files...
  • J
    joevt replied to the thread Guess the NuBus card.
    Right. The display in the photo cannot be the display connected to this graphics card. The display is just grey checkerboard.
    • video output.png
  • J
    joevt replied to the thread Guess the NuBus card.
    The memory dump shows the framebuffer at offset 0 which has a B&W checkerboard pattern that is 128 bytes wide = 1024 pixels, 769 lines...
  • J
    joevt replied to the thread Guess the NuBus card.
    The zip opens on modern macOS, then you transfer it to your old Mac.
  • J
    joevt replied to the thread Guess the NuBus card.
    Try SlotsGrab or SlotsMem from https://github.com/joevt/SlotsDump They create a file or files in the same directory as the app so maybe...
  • J
    joevt replied to the thread Q840av gets a make over.
    Does the motherboard have a label for the connector in your Power Mac 8600? Is it J20? In the Power Macintosh 9600 schematics, J20 is...
  • J
    joevt replied to the thread ADC Studio Display in OS 9.
    What does the Radeon 7500 look like in Open Firmware? Mac OS 9 System Profiler? OS X? Run AllRez in OS X to capture some info about the...
  • J
    joevt replied to the thread PowerMac G4 MDD unstable after bus speed mod.
    I want to see if your working 1 GiB DIMMs have a similar layout to the DIMMs that @DanaTheElf has which are being detected as only 512 MiB.
  • J
    joevt replied to the thread PowerMac G4 MDD unstable after bus speed mod.
    Connect the MDD to your network via Ethernet. Boot into OS X to get it's DHCP assigned IP address. Boot into Open Firmware and use that...
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