On Oct 2, 8:33 pm, Andy Stocker <[email protected]> wrote: > So I have an SE/30, and I have various daystar powercaches that I'd like to > put inside. Many of you know that the daystar se/30 adapter is as hard to > find as plutonium at the corner drugstore, and I don't have the patience or > bankroll to find and win one at an eBay auction. It's hard to find, and > nearly impossible to replicate.
You'll end up having to apply patience to either Ebay sales, or to the design and construction work to build your own solution. Ebay sales sound like less work to me... > However, a CPU socket adapter looks relatively easy to wire up (my SE/30 is > socketed). Electrically, it's easy. Physically, the fit is impossible. There is room under there for a board to plug into the CPU socket, as proved by Daystar's CPU socket based upgrade for the SE/30. However, there is not room for an adapter board and a PowerCache or Turbo040 on top of the adapter board or even plugged into the side of the adapter board. I took some measurements some time in the last few years, and it just won't work. To use this scheme, you'd need to build a circuit board that mates with the CPU socket and then brings the connections up above the SE/30 metal frame somehow, and then probably connect to another circuit board which mates with the PowerCache/Turbo040. You could use three 40 or 50 conductor flat flex cables, but it gets expensive for three 4" - 6" flat flex cables, six FFC board connectors and two circuit boards. Plain old Ultra-ATA cabling would actually do the trick better (built-in intervening ground wires) and cheaper if you could find the cable connectors as a separate product. You need the blue connector (IIRC). The grey and black have some pins omitted/ rearranged to support Master/Slave and Cable Select. If you do find those cable ends as crimpable separate products somewhere, please let me know. I wrote about this pretty extensively either on Applefritter or on 68kmla.net some years ago as "trag". Ultimately it's probably easier, and certainly cheaper, to just get a IIsi adapter, reverse engineer the PLD on board and build your own PDS adapter. > So, if any of you folks have either a IIX or IICX daystar adapter, I have a > proposition for you. I would like to rent it for a week or two, for the > sake of making a wiring diagram. You want the IIcx adapter. The IIx adapter has a PLD on board. <http://www.prismnet.com/~trag/MacIIxAdapter.jpg> I do have a IIcx adapter in the attic, but it's packed in the least accessible reaches up there, and I won't be getting it down any time soon. If I do I'll trace out the connections. It's a good idea, in any case, to document the connections on these old Daystar adapters. I think that Bunsen on 68kmla has one, but he's in Australia. -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/
