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I wonder if the form factor of the machine and the way they’ve been stored in the last 35 years has something to do with it, rather than it being a different batch of panel.

I believe someone here had theirs running with 15MiB

My point of reference is the Quadra 840AV so maybe they improved some aspects of the case design by the time the 8500 came out.

They are, anytime you want to work on the motherboard you have to disconnect all the internal cables, remove all the expansion cards and then awkwardly slide it out, fighting with clips and hooks as you go.

If a 33MHz and above 68040 needs a heatsink then I'd assume a 80MHz 601 also needs one.

Not by a long shot. You could call it utilitarian or uninspiring, but it’s not ugly. The LC500 Series and Molar Mac (G3 AIO) wins that award.

Is that wise? Might you damage the chip?

Correct

This would be very cool - a dedicated thread sounds sensible. Would enabling 10MB/sec mean disconnecting external SCSI devices?

I dual boot 7.1 and 7.5 but use 7.1 more often these days. I did have an 8.1 install but once the novelty wore off I didn’t feel there was that much point running it on my SE/30.

I have one of these, came with a 630 board as well. It’s just a QFP to PGA adapter and you can remove it from the socket. I swapped a full 040 onto mine and run it in an LC475.

This

What you would do is create a 7.5 floppy with the ResEdit patch applied.

Because you’re trying to install while booted to System 7.1 and it always thinks the partition is full if larger than 2GB. You should start up from System 7.5 or later to do this install.

Check -12V is getting to the Nubus slots

Maybe the CPU can’t handle being overclocked that far. You could try 50MHz x 4 (200MHz).

Does it appear in TCP/IP or AppleTalk control panels? These are usually listed as Alternate Ethernet. A crossover cable is required if connecting directly to another computer but not if you’re connecting into a hub/switch.

Agree on both counts.

The GitHub repository is now public, here: https://github.com/croissantking/840AV-Stealth-ATX Now it's time the community gets to work to restore those dead PSUs :) FWIW, I've discovered some models of Seasonic PSU (in addition to EarthWatts) use the same donor board, these are listed in the...

You can get tabbed cells and solder them together, there's not a safety issue with NiMH. The only problem is that if you go for the original 'A' size, you won't get them to fit in. But AA cells, which are smaller, should work fine.