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Just to get the diagrams in question into one place, here's the diagram from A-4 ... and here's the diagram from A-6 and A-7 It looks like the 'computer' side of the transformer is center-tapped, but the A-4 diagram is slightly contradictory as to how it is wired up - if you believe the turn...

I just happened to have a PhoneNet adapter sitting on my bench (albeit an off-brand Interex one), so I cracked it open and traced it out. I have a few such adapters, they're rather nice in that they've got activity LEDs (labeled "TX" and "RX" but actually just wired in series 🤦‍♂️) and a...

I'm very interested in this too; if the SPI clock was fast enough, it could potentially be an option for building an internal ethernet adapter for the 180. But on the other hand, I'm rather hesitant to open mine up to experiment with such a thing...

"Crude and bothersome" is a fairly apt description of the way a lot of things are in the Classic Mac OS network stack. It might work pretty well externally, but having spent a lot of time recently writing my own Ethernet driver, the internals are inelegant to say the least. The unfortunate fact...

Interesting... I wonder if the DaynaPort driver is active whether or not there's a device for it to talk to. That could definitely foul things up, but when I wrote my own ethernet driver a while ago, it's absolutely trivial to avoid that problem, even without the aid of the Slot manager. Maybe...

Are you using the same router configuration file, or have you created a new one? I saw similar errors when I tried to move the router config from one machine to another. I didn't look into it too far, and just entered a new configuration from scratch. I don't *think* it's the leftover driver...

On a somewhat related note, National Semiconductor application note AN-691 describes a reference design for a SE/30 PDS ethernet card using the DP83932 'SONIC' ethernet controller that does bus-mastering DMA to system RAM instead of having its own packet buffer on the card. In theory, with a...

Actually, that's a good question; does anyone know what the correct impedance for an SE/SE30 speaker is? I bought a cheap 32 ohm speaker to use when I run my boards outside of a case, and while it does work, it's definitely quieter than the original.

My suspicion would be that the cable was slightly misaligned at one end or the other, and one of the contact 'blades' has nicked into an adjacent wire as well as the one that it's supposed to contact. I'd try another attempt at rebuilding it, using a fresh piece of ribbon cable. With connectors...

The explanation as to why you need to do this is kind of complicated and goes off into the weeds, but I figured I'd clarify my previous post because I realised it didn't completely make sense unless you already knew what was going on: Essentially, Mac OS ethernet drivers come in two parts, a...

For systems prior to 7.5 (and, I believe 7.5 as well if you're not using Open Transport), you'll need the Network Software Installer disk, as well as the driver from Glenn's website. If I remember right, version 1.4.5 is the newest version that will install on System 6. Since your card isn't...

Oh fantastic! I built up something similar a while back and seem to have misplaced the disk. That'll be a great help for all sorts of things.

Yep, that block of 'fuses' is just a type of jumper block; looks like it's socketed for two different positions. The DP8392 chip further down on the board is an AUI-to-coax interface, so I bet that all that jumper block does is direct the AUI lines coming from the DP8391 AUI interface to either...

I don't know that card specifically, but typically you should at least see a 'power' light on the transceiver that should come on as soon as the card is powered. Does the card have a twisted-pair interface on it as well? Not all cards auto-detect which interface is connected (and some that do...

Thankfully it was a case of "I'm throwing these out, do you want them?" but it was absolutely incredible how quickly those bad disks would clog drive heads - just one failed attempt at formatting would clog the heads so severely that the drive would subsequent have trouble reading known-good...

I have the same situation with an 100-pack of HD disks that I was given a few years ago. It was still in its shrink-wrap, but nearly every single disk was unusable, with mildewy-looking deposits on the disk surface. I haven't given much thought to trying to save them, but I do wonder if cleaning...

It's been a while since I messed with this, but I think you'll have better luck installing Python through MacPorts - this gets around the certificate issues by bundling a newer version of OpenSSL. The unfortunate thing is that MacPorts does not have binary packages for older OSes, so the install...

Lately I've had a few situations where it would be nice to have an always-on 68k server running System 7 or some such. Since I don't have a spare machine to dedicate to such a role (and don't really want to deal with the space and power consumption of running vintage-hardware 24/7), I thought...

Oh that looks fantastic!! Unless some major issue comes up, then yes, the schematics currently on github should be final. I've had that version of the board running in my SE/30 (now with a @zigzagjoe accelerator too!) for several weeks of heavy use without any issues. I might shuffle the...