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I think that Phoenix Connectors also has those connectors. At least, I remember sourcing some for adapting ATX PS to the Umax S900. I'm not certain I got htem from Phoenix.

Did you see the work where the HD20 (floppy interface) was analyzed and I can't remember the result -- some kind of peripheral was created? Or is that the BMOW reference. Too many years...

Unsolicited, but my experience with UTSource is that many (most?) of their listed prices on parts are a fantasy. Request an actual quote on all parts you wish to buy and do not assume that because they listed a price and quantity on their website that they actually have any.

I may not have been reading the 2.1 spec, but what I remember is 4 PCI slots (interchangeable devices) or 10 fixed devices for signal integrity. The Apple Network Server has a mix of slots and fixed devices (2 & 4 respectively) on the bus with six devices.

This probably isn't helpful for the effort at hand, but.... The PCI Device Numbers (F, E, D) are which PCI Address line is tied to the IDSEL pin on each PCI slot. Presumably, it could be reordered by changing which address line is tied to the IDSEL for each slot. However, that would mess up...

Software and flash chip are larger on the PowerDomain than on the PC version of the card. The PC firmware won't fit. It's been more than 20 years, so memory and all that. I remember there was a version that seemed to work in the smaller flash chip, and I can't remember if it actually did...

The G4 Mac Minis came with a 7447a processor and an ATI Radeon 9200 graphics chip. Is this adaptation of 8.6 likely to work on the G4 Mini?

Yes. I had to find my old posting because I couldn't remember: https://tinkerdifferent.com/threads/se-30-reloaded-group-buy.2337/post-22017 They were suggested by someone in my rocketry club. The phosphoric acid solution from Rustoleum is Rustoleum Rust Dissolver -- or that was the product...

What metal is the SE/30 shield? IF it is iron based, then a wash of phosphoric acid is a good choice. I've bought this treatment under various covers over the years, but I think the most recent was a Rustoleum product. Regardless of who is packaging it, it is a thin, green colored liquid...

We've also seen a few users where the SCSI connector (DB25) is just so old that it's dirty/oxidized. A good contact cleaner spraying might be a good idea. Maybe DeOxit?

IIRC, on the IIci cache card they are 22 uF. But one should double check, as my memory is old and corroded.

Starting about here: https://68kmla.org/bb/index.php?threads/pex-rom-project.23568/post-269509 is some discussion of the difficulty in converting from a software dump of the ROM to actual files that go on chips. We solved the issue, as you'll see if you read a handful of posts further in from...

Did anyone ever archive the Brinhoven site? May be wildly misremembering that name. There was a "The Unofficial Turbo 601 Page" and it was hosted there. Went down some time ago, but I hope someone archived the collected wisdom.

Also, if you have not already, remove the heat sink, clean the chalk that was once heat sink grease, and replace with a tiny dab of good heat sink compound. Do not crack the CPU in the process.

I don't have any X100 boards where I can lay hands on them, but from what I remember, the chip was labeled with an Apple part number, but it's entirely possible that it was a rebadged CPLD. I checked my notes, but I didn't record the part number. Electrically, it's going to sit between the...

What Byrd wrote.... I've had similar issues and cleaning the CPU socket with something like DeOxit https://www.amazon.com/gp/product/B00006LVEU has relieved the issue at least a couple of times. I had similar issues before I thought to clean the contacts and ultimately replaced the...

All of my content formerly at prismnet.com/~trag is now at sphinxgroup.org. Do not add the ~trag at the end. tigertech handles web space a little differently from how prismnet did.

Very nice. Thank you.

There might be some useful information here: https://68kmla.org/bb/index.php?threads/scsi-voodoo-howto.25878/ And there's a link in that thread to the comp.periphs.scsi FAQ on SCSI that I mentioned above.

Adaptec later created a number of cards with the "2940UW" identifier. Only the ones based on the Adaptec 7880 chip are convertible to Mac use. There was a 2940UW 'Dual' or 'Duo' or some such which wasn't. The 2940UW is pretty easy to convert because there's a set of DIP holes right on the...