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  1. rabbitholecomputing

    Looking for anyone who has a Zulu SCSI and Quadra 700

    Today, we released ZuluSCSI firmware version 1.0.4, which adds the ability to disable the prefetch buffer at runtime, by setting PrefetchBytes=0 in the [SCSI] section of the zuluscsi.ini file. In our testing, we've found that disabling the prefetch buffer on Macs which support synchronous SCSI...
  2. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    Please engage with us via e-mail, and _fully_ describe the problem, including which SD card you're using, etc. If you aren't seeing a log, it's because the ZuluSCSI isn't writing one, which almost certainly means it can't find an SD card. Please ensure you're using an SD card that's an...
  3. rabbitholecomputing

    Previewing PS2ADB - a low cost PS/2 keyboard & mouse to ADB adapter

    With USB, you need to have a microcontroller that can act as a USB host, and with the current semiconductor/microcontroller shortages, that's a VERY difficult thing to obtain, particularly at a price that isn't highway robbery.
  4. rabbitholecomputing

    Previewing PS2ADB - a low cost PS/2 keyboard & mouse to ADB adapter

    We haven't published a schematic yet, but it's very simple. We'll make one available soon.
  5. rabbitholecomputing

    Previewing PS2ADB - a low cost PS/2 keyboard & mouse to ADB adapter

    That's a question for @tashtari to answer, since he wrote the TashTrio assembly code, which is open source. Tash?
  6. rabbitholecomputing

    TashTrio: ADB Keyboard, Mouse, and Modem too!

    And now, there's a hardware reference design for TashTrio, appropriately named PS2ADB. We're working on a 3D-printed enclosure, since there's exposed +5 volts DC on the bottom of the PCB. We'll be releasing the schematic for it in the near future. Anybody who would like to know more about...
  7. rabbitholecomputing

    Previewing PS2ADB - a low cost PS/2 keyboard & mouse to ADB adapter

    PS2ADB is a stand-alone utility device for use with any ADB-based Macintosh computer, allowing use of very inexpensive keyboards and mice, including optical mice, with any Macintosh that has an ADB port. PS2ADB is powered by @tashtari's TashTrio PIC firmware, which was announced back in...
  8. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    @frankz seems to have figured this out. It's related to the driver using blind transfers. I'll let him share more, so we're not playing a game of telephone.
  9. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    How are you expecting the SE/30 to "see" the ZuluSCSI? Given that your sig says you've got plenty of other classic Macs (Ici, IIsi, Plus, Classic, Classic II, Quadra 660av, Centris 650), so does the ZuluSCSI work with any of them, or is this a problem specific to your SE/30? Without knowing how...
  10. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    These are a good starting point, although the images are rather minimal: https://macintoshgarden.org/apps/rascsi-68kmla-edition
  11. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    John, Please open up a discussion at https://github.com/ZuluSCSI/ZuluSCSI-firmware/discussions/new so we can have this conversation in an appropriate setting. For others who may find this thread, the 68kmla forum is a place for Macintosh users. Please respect that. This thread isn't an open...
  12. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    @frankz yes, it's quite bizarre. According to the logfile analysis we've done, the commands match the SCSI2SD V5 exactly, until one command hangs at the STATUS phase. Everything looks perfectly as it should up until that point, so the reason for the hang is still a mystery. Another person with...
  13. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    Can you share the exact version of HD SC Setup you were using, so we can attempt to replicate? Thanks!
  14. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    How strange. Thanks for sharing this information. This isn't something we've ever run in to in testing, but we'll be working on replicating the problem, and we'll see if it's something we can get to the root cause of.
  15. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    Thanks for the logs, @frankz . I was able to get my Mac Plus to power up, after some surgery, and can now replicate the same behavior here, with my Mac Plus. Stay tuned. We'll get this figured out. It may not be until Tuesday/Wednesday next week though, as I'll be going off-grid to go camping...
  16. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    Can you set EnableSelLatch=1 in the [SCSI] section of your zuluscsi.ini? This is the equivalent of checking the "Respond to short SCSI selection pulses" in SCSI2SD-util, in the context of a SCSI2SD V5.x On the CodeSrc wiki, Michael McMaster (creator of SCSI2SD), back in 2017, wrote "The Mac...
  17. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    Apologies, I got my wires crossed. Someone else here had an SE/30, and I incorrectly thought that was you. My bad.
  18. rabbitholecomputing

    Announcing ZuluSCSI - A file-based SCSI device emulator

    Not yet. Thanks for the log. Why do you have SelectionDelay set to zero in your zuluscsi.ini? That isn't necessary on any mac other than the Plus, and that's only because it's SCSI implementation was not entirely compliant to the specification. Please remove that and try again.
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