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Ya, I'm not going to let this one be the guinea pig 😳 Do you remember the part #'s of the ROMs on the mainboard?

The keyboard extension doesn't have a ROM in it, but it does have a P8748H microcontroller in it as pictured in this post above. I don't know if there's a way to dump the microcontroller's programming: Here's a picture of my MacCharlie's mainboard. As you can see, I have V3 of the Charlie...

Thank you! That video was very helpful! I just wanted the Mac and MacCharlie to line up properly, and I think I worked out that the Mac needed to be raised 16mm to make that happen. So, I just printed four quick-and-dirty risers for the Mac's feet to sit on: My printer isn't big enough to...

I don't have the bottom tray, but I 3D printed some risers for under the Mac's feet to raise it to the same height it would be at if sitting on the tray. That's why the Mac and MacCharlie line up vertically in my picture. When you have the tray, I believe the MacCharlie unit itself is still...

Here's the whole enchilada running Hitchhiker's Guide to the Galaxy from the B drive: Also, I love this cheeky error message:

Thanks! I'd already found the software here and got it booting into DOS 3.10, but it looks like you have a couple things that site doesn't have (y) I've been working on replacing the bad key switches in the keyboard extension, and the TLDR is that I was eventually successful. The PCB is...

Are these photos sufficient? I can also just tell you pretty much how it works (LC PDS pinout for reference): Every PDS slot pin except for C16M (16Mhz clock) at pin B7 is wired straight-through to both female slots on the riser. C16M is connected to the inputs of two separate inverters in...

An unnecessarily complicated Apple //e...

I recently acquired a MacCharlie with the keyboard extension, and I've been talking to @Tashtari about figuring out how it works. However, I've identified TEN bad key switches on it (no continuity across the pins when pressing the key). I know I can just manually short a key when eventually...

I have zero PCB layout/design experience, and you wouldn't be able to use this in a regular LC pizzabox...at least not with the lid on. I also suspect it will only work with either very simple, or very specific accelerators. Still, there's nothing programmable on it, so figuring out the...

It took me 3 years, but I believe I've finally found the dual-slot PDS adapter that was an option with the Power Workstation: There's no programmable logic on it...just a single hex inverter, and near as I can tell, none of the inverted signals are actually used. Only two of the...

I...do not have a thermal camera 😕

That was my thinking. With the particular cards I have installed, the section of the case exhausted by the 40mm fan is mostly walled-off from the rest of the case interior, so the PSU fan probably wasn't that involved in ventilating that area. There are slits in the case lid above the NuBus...

I don't know how useful this'll be for others since it's a pretty specific use-case, but I have a couple extra toasty full-length cards in my IIci, and I was trying to come up with a way to get some air moving through that walled-off part of the case. Since these particular cards don't require...

I'm sure others were probably already aware of this, though maybe had never tried it on real hardware, but I was happy to discover that BlueSCSI's floppy emulation happily mounts 2.88MB floppy images created from flux dumps, so now there's a decent archival path for 2.88MB NeXT floppies...

I store mine loose (some of them in antistatic sleeves) in a well-labeled cardboard box...I'm very organized :rolleyes:

I also remember installing some kind of 5x86 upgrade in my 6100 DOS back in the mid-90s and it making Win95 crash. There were also clearance issues with the cooler on the 5x86 and the stock heatsink on the 601. If I hadn't removed the upgrade because of the Win95 issues, maybe I would have...

Can confirm that they're functionally identical as I happen to be using ZZG's neckboard with Bolle's video card.

I have an Apple Dot Matrix Printer model #A2M0058 that looks like this: I recently noticed that there are also apparently printers with the same name and model # that look like this: The only obvious difference seems to be the smaller logo that's been attached to the front of the case...

I remember doing the same jumping up and down when my reloaded SE/30 booted...almost tipped the desk over and ruined it all :LOL: Congratulations!