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joevt's latest activity

  • 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...
  • J
    joevt replied to the thread PowerMac G4 MDD unstable after bus speed mod.
    Can you grab the SPD of your 1 GB DIMMs to compare with these two at...
  • J
    joevt replied to the thread 180MHz 603ev CPU upgrade for 5300ce?.
    All 14 of the internal checksums match. The first 5 only apply to the first 3 MiB. The remaining 9 apply to the entire 4 MiB. 077d.27f3...
  • J
    joevt replied to the thread G4 MDD RAM recognised at wrong size.
    When pasting text output in a forum post, first paste it into a text editor like BBEdit.app to make sure copying from Terminal.app does...
  • J
    joevt replied to the thread G4 MDD RAM recognised at wrong size.
    The .properties command will truncate large properties. Use this to dump the entire contents of the dimm-info property. " /memory"...
  • J
    joevt replied to the thread 6500/250 Woes.
    If it works well enough to zap the PRAM, then it should be working well enough to get into Open Firmware? Connect the modem port with a...
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