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joevt's latest activity

  • J
    joevt replied to the thread Interware VDR-2a BIOS.
    It appears to be two 4K DECLROMs concatenated together. The first 4K describes 640x480 modes. The second 4K describes 640x400 modes...
  • J
    joevt replied to the thread Reverse Engineer the PowerKey by Sophisticated Circuits?.
    How does a Xcode project build an Apple IIGS binary? What's Orca?
  • J
    joevt replied to the thread ZuluIDE.
    Maybe we should discuss this in a ZuluIDE issue on GitHub?
  • J
    joevt replied to the thread ZuluIDE.
    Sounds like a different problem to fix. A trace from Open Firmware should be equally as useful as for this problem. To trace multi-boot...
  • J
    joevt replied to the thread ZuluIDE.
    8 is ATAPI_SOFT_RESET but that's for the command register, not the control register so ignore that. Mac OS X has these definitions: /*...
  • J
    joevt replied to the thread ZuluIDE.
    The ATA/ATAPI protocol detection method is described at: https://wiki.osdev.org/ATAPI DingusPPC has method device_set_signature for...
  • J
    joevt replied to the thread ZuluIDE.
    Maybe there's an issue with timeouts? openwait is 100 ms. drive-select has 1 ms after selecting device. wait-bsy has 32 seconds...
  • J
    joevt replied to the thread ZuluIDE.
    If anyone wants to follow the code for this, my Open Firmware Forth dumps for 4.4.7f1 and 4.4.8f2 are at...
  • J
    joevt replied to the thread ZuluIDE.
    I suspect a firmware problem with ZuluIDE. Output from the trace will determine what, if any, assumptions are being made by Open...
  • J
    joevt replied to the thread Trashcan!.
    BootCamp is not Windows emulation. It has two parts - one part for macOS for setting up the Windows partition. The second part is...
  • J
    joevt replied to the thread Rebuilding an Apple Multiple Scan 20" display.
    13 1/8 inches x 25.4 mm/inch = 333.4 mm. perl -e 'printf("%.1f", (13+1/8) * 25.4)' 333.4 The ruler is marked with eighths on one side...
  • J
    joevt replied to the thread ZuluIDE.
    I have no experience with ZuluIDE. What Open Firmware version does your MDD have? We can run some commands in Open Firmware to see...
  • J
    joevt replied to the thread Power Macintosh 7500 thinks it's an 8500.
    Confirmation helps to ensure that what I know is correct or not. I would like my sample size of real hardware to be greater than zero...
  • J
    joevt replied to the thread Power Macintosh 7500 thinks it's an 8500.
    Read F301A000 in Open Firmware. F301A000 rw@ 4 u.r The BoxID bits are bit 11 and 12 (where bit 0 is the LSB). From LSB on the right...
  • J
    joevt replied to the thread Troubleshooting Quadro 4500 FX in G5 Quad.
    I used nvflash.v5.95.0.1-win (from TechPowerUp website) in Windows 10 to flash my Nvidia 7800GT Mac Edition (from my Quad G5) so that I...
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