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You are correct. Two years later, I realize I did not read carefully enough. You were writing about converting from RAID card for Mac to non-RAID card for Mac. I was confused and thinking of card for PC to card for Mac.

My guess is that they are capacitors. Perhaps they're driving the ROMs a little too fast and the capacitors provide that extra little bit of current when the ROMs draw extra power. Totally guessing and could be totally wrong, but a component without continuity which is nevertheless needed...

Should the above have read: "Then you can set the MOR byte at 0x1F00 (if it's anything different to 0x00), BTW, excellent posting. Thank you for the wonderful work.

Was the thread that covered their creation on 68Kmla.org lost? The details were covered extensively there. Techknight posted as he developed/troubleshot the cards. Edit: Okay, this point in the 68KMLA thread seems to be where the wire starts getting discussed. I'd read the whole...

The tricky part in finding the part is finding a '705 with enough RAM. The e1 has 368 bytes of RAM. Most of the other variants have 176 or similarly small amounts.

What affect will this software have on a machine which has had the 33 MHz resistor move modification? Do the resistors need to go back to their original positions? Edit: Never mind. Found the answer here...

Ten years ago, my efforts to reproduce. Unfortunately, the thread where Wally reported the inductance range is long gone. I want to say 0 - 44 uH, but I don't think that's right. https://68kmla.org/bb/index.php?threads/anyone-have-a-dead-l2-adjustable-inductor.27941/#post-294686

Yep, that's the one I have. I just really love having the stripper conveniently stored in the handle...

Wire wrap may be alive an well, but my favored tool came from Radio Shack, and they're long gone -- I think. Haven't checked for a lingering on-line presence in a while.

I treasure my wire wrap tool, as I'm not sure I could find a replacement...

That is my understanding as well. Except I don't think there's any need for coordination between the busses. If a PCI device wants to access RAM, e.g. and the relevant Bandit doesn't have control of the CPU bus, I assume the Bandit would just stall the transaction until it's ready to bridge...

Well in the thread with the 9600 schematic (and 6500 schematic) that joevt referenced above, I posted my thoughts. I concluded that you can probably just solder the chips I have in place of the existing chips, (matching pinouts) but the question is then exactly what you asked. How does the...

Okay, I looked at it. The differences are minimal. Bandit 1 has a GNT/REQ line connected to Grand Central and Bandit 2 does not. Which makes sense. You don't want to put Grand Central or any other PCI device on two different PCI busses. Pins for Bandit on Arbiter 1 are connected to...

Sorry for hijacking the thread. We now return you to the regular topic....

ClassicHasClass answered that better than I could have. Yes, it has OF. That's a little disappointing, although at this point in time, a solution for the S900 is more of a white whale than a real need. :) Still, it's very puzzling. Architecturally, the S900 is like a PM9500 with the...

I wonder if they did that so that it would be easier to use the same ROM on all those machines. If it's at F0, it's video circuitry. If it's at F4 its more PCI slots. It would be interesting to get the Mac OS running on the ANS. However, two of the PCI devices on that six "slot" Bandit...

As far as I know, Apple never used more than 2 bridges. The ANS has two Bandit PCI bridges, similar to the PM9500. On the 7500/7600/8500/8600 the video circuitry is the 2nd bridge and the first one is a Bandit PCI controller. The Apple Hardware Developer Note for the ANS goes into a small...

Back in the 90s, The University of Texas at Austin held a surplus property auction three or four times a year at a warehouse at the Pickle Research Center. That's probably where Jag was seeing pallets of Macs. I bought 15 pre-Plus Macs at some point for some small sum. Probably under $100...

For chip programming I like to keep an old Dell 'D' or 'E' series laptop handy. Being a laptop, they don't take up much room, and the D and E docking stations are available with a parallel port which is nice for the really old programmers. I guess not much need for the P port with a new...

No, I never did the experiment. I'm great at posing questions, but less so at making answers. Projects backed up to the year 3000...