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  1. jmacz

    Would someone with a Quadra 700/900/950 be willing to test a program for me?

    IIfx (System 7.1.1) I know you didn't ask for it but it was set up on my desk so thought might as well. Apologize for the cursor being there, didn't notice until after I uploaded the picture but the values underneath it are zeros.
  2. jmacz

    Would someone with a Quadra 700/900/950 be willing to test a program for me?

    PowerBook Duo 280c (system 7.6.1 - overclocked to 40MHz - has a full 040 with FPU)
  3. jmacz

    Would someone with a Quadra 700/900/950 be willing to test a program for me?

    I don’t have time until this weekend. But if no one else gets it done before me, I can do it for a PowerBook 500, PowerBook Duo, Q700, and Q950.
  4. jmacz

    Floppy disks mount duplicated on Mac 512K

    If I remember correctly there are two enable signals, one for internal and one for external, both from the IWM. Curious if they might be shorted causing the internal to respond as both external and internal. Or maybe something’s wrong along these lines with the IWM. I think there is a shared...
  5. jmacz

    Durosity’s conquests and collection

    Nice!!! Congrats!
  6. jmacz

    PowerBook 540c - Did a thing (OS 8.6)

    🤯🫣
  7. jmacz

    PowerBook 540c - Did a thing (OS 8.6)

    Yeah that looks pretty cool. I also finally got a PowerPC card but I am still running 7.6.1. I think I will always be a System 6/7 person.
  8. jmacz

    Tiny Turbo Development: Like Spicy O'Clock for Power Macs (or anything with a half-can oscillator)

    Wow, this is so neat. Love threads like this. I don't know enough in this space to contribute but going to be watching this with much interest :)
  9. jmacz

    PowerBook 540c Restoration Project

    Ah, interesting!
  10. jmacz

    SE/30 with non-working SCSI/no-boot

    Congrats!
  11. jmacz

    SE/30 with non-working SCSI/no-boot

    Did you try the 470 ohm resistor on the /req line like I mentioned in the other thread. I assume your active terminator was on the external scsi port, that didn‘t help me.
  12. jmacz

    SE/30 with non-working SCSI/no-boot

    Check out this thread and see if it helps. https://68kmla.org/bb/index.php?threads/se-30-yet-another-scsi-issue.49949/
  13. jmacz

    jmacz journey

    Looking for ribbon cables for a spare passive and a spare active LCD panel I have, both sharps. I did receive two of those CCFL tubes and wiring connectors. But I've put the complete systems back together already with replaced clips from other lids I had. Once I find new ribbon cables, I'll...
  14. jmacz

    jmacz journey

    No, for the 500 series PowerBooks, it's purely mechanical with no magnets. Just a spring and latch.
  15. jmacz

    Skipping the Startup Memory Test

    Glad to see it's working for you. I can look into sharing the code when I get a chance.
  16. jmacz

    jmacz journey

    Replaced the front facing cover panel (the one with the latch) with another, and it works fine. The latch mechanism itself seems to be the same, nothing broken or missing. But it looks like the hook itself may have deformed on the ones that aren't locking. They are bent backwards slightly...
  17. jmacz

    jmacz journey

    I have three working PowerBook 500 series now. PowerBook 540c with PowerPC CPU Card and 32MB memory module, 320MB HD, Hosiden LCD (Active) PowerBook 540c with Full 68040 (w/FPU) overclocked to 40MHz and 32MB memory module, 160MB HD, Sharp LCD (Active) PowerBook 520c with 8MB memory module...
  18. jmacz

    jmacz journey

    The center clutch cover on the PowerBook Duos is listed as a disposable part that should be replaced when the PowerBook Duo is serviced. This is because the little clips on it break off easily when removing it. Unfortunately for us, these are no longer made. I have a few with broken clips. Time...
  19. jmacz

    PowerBook 520c/540c backlight interchangeable?

    Decided against it as I didn't want to shove another board in there right now. Considered designing a new inverter board altogether with only LED support (CFFL bits removed) but would require me to spend some time to learn more first (future exercise). I have two of the tubes on the way. Let's...
  20. jmacz

    PowerBook 520c/540c backlight interchangeable?

    I've got a broken CCFL tube for a 540c. I took the measurements of both the working one (from a Sharp LCD), another working one (from a Toshiba LCD), and my busted one (from a Hosiden LCD), and they all seem to be the same size. 3mm diameter and 218mm length (for just the tube -- not including...
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