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Recent content by trag

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    Difference between IDE controller on 1997 beige G3 and 1998 beige G3

    Hmmm. Where did the Wiki go? Doesn't seem to be a link to it at the Home 68kmla.org page. That's where the pinouts were listed. https://www.prismnet.com/~trag/Apple_pinouts/Firmware_Module_Pinout.txt And https://www.prismnet.com/~trag/Apple_pinouts/ For some other Apple pinouts I did...
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    Converting Acard AEC-7722 to AEC-7726

    Sorry for the late reply, I'm not visiting regularly these months. Yes, you must remove and reprogram the Flash chip. As far as I know all attempts to program the chip in-circuit have failed. Someone could probably hack the flasher to make it work, but that'll take a software wiz... My...
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    FWB NuBUS Jackhammer Incompatible with Fujitsu 2.3G MO Drive

    I have rethought my guess a bit, seasoned with an old memory and now I'm leaning towards hardware -- or firmware. I remembered an old (IIRC) Pinnacle Micro 5.25" drive which could operate on either type of media, but one had to change a jumper on the back, where one normally find the SCSI ID or...
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    FWB NuBUS Jackhammer Incompatible with Fujitsu 2.3G MO Drive

    I have no idea, but if I had to guess, I'd guess driver limitation. The hardware ought to be able to just sling the bits off the disk, I would think. Of course, there might be low level hardware functionality in how the sectors are read, but that just doesn't seem consistent with how most...
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    FWB NuBUS Jackhammer Incompatible with Fujitsu 2.3G MO Drive

    Thank you. I'm feeling very sleepy today -- probably oak pollen -- and that was a nice pick-me-up. It's always nice to have been right about something. :)
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    Need help designing a PCB/Recreating one.

    Hopefully you're getting help from @360alaska but in any case you might throw a scan of both sides of the ROM up here. That way we can see if it looks like any of the ROM modules that are already designed.
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    Mac OS 7.1 drivers for USB 2.0 & FireWire 800

    Heh, just quoted you on that. But only to mention that that is also my recollection from the explanation in the original thread when the software was originally developed.
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    Mac OS 7.1 drivers for USB 2.0 & FireWire 800

    Third party ATA cards used SCSI hooks for their drivers. Hence IDE/ATA busses show up as SCSI busses when one uses SCSI utilities on the Mac. I don't know how Apple handled support for built-in IDE/ATA busses.
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    My SE/30 hates 16mb ram sticks

    Yes, at less than $1 per chip, one must ask whether it's worth the time to test, vs. just replace the lot. Excellent point, techknight.
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    My SE/30 hates 16mb ram sticks

    Those do look iffy. Also, check those vias through the board to confirm they actually conduct from one side of the board to the other. My IIci had some vias chewed by capacitor goo that looked okay, but were actually corroded through. Also, don't ignore Techkight's advice. He has far more...
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    Apple Network Server 500/132

    There's a request on LEMSwapList for AIX 4.14 or 4.15 for the ANS. I don't know if that's related to anyone on this thread, so thought I'd mention it. You might want to join forces with that poster.
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    My SE/30 hates 16mb ram sticks

    Keep in mind it may be labeled A11 or A12, depending on whether the DRAM address bus starts numbers with A0 or A1. And this is the address line(s) between the memory controller and the DRAM SIMMs. Not the main CPU address bus. The easiest way to find it is probably to get a pinout of the...
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    Convert IDE Zip, CD-ROM, etc. to LVD-SCSI with IBM aCard AEC-7722

    I haven't done any work on this project in the last few weeks. For a while I was waiting for heat sinks to chase hte reliability problems and more recently, I'm obsessing over my 2021 taxes to get everything where it needs to be.
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    Convert IDE Zip, CD-ROM, etc. to LVD-SCSI with IBM aCard AEC-7722

    I don't know if the 7222 will work with a ZIP drive becasue I don't know if the ZIP drive presents itself as a SCSI storage device (hard drive) or as an ATAPI device. Without a firmware hack-date the 7222 will only support optical/ATAPI devices. After you hack/update the firmware, it will...
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    My SE/30 hates 16mb ram sticks

    Could be that capacitor goo damaged/shorted the A12 line to the RAM slots. That address line wouldn't be used on 4MB and smaller SIMMs but is needed on 16MB.
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