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Thanks! Don't put too much stock in what I have to say, at least until I get the whole thing working! 😁 The commenting might be a little bit on the excessive side but I find that it helps a lot in the process of wrapping my head around what's going on. I'd like to turn it into a more structured...

Turns out the ENC624J600 doesn't like its byte-selects being wiggled when its chip-selects aren't asserted - previously I'd just been decoding them based on access size and A0, and assumed it would ignore them when it wasn't selected. But when I gated them behind the chip select, it started...

You know that you're getting into some serious debugging when you have to bust the oscilloscope out.

The boards and parts arrived this weekend, and we have some signs of life! Managed to bodge around my timing bug on the SE/30 board in an ugly but workable fashion (that gigantic solder glob on R2 is another bodge. I may be bad at SMD soldering but I'm not THAT bad!) The declaration ROM shows...

I'd originally planned on a 10 pin connector to the breakout board just because I had some 10-pin cables lying around from another project, but when I realised that my video card's connector is also 10-pin, I thought that maybe I should make them different :). At least for the prototypes I'm...

This is brilliant! I was playing with modems a while ago and noticed that the one in my 180c seems to be dead (responds to commands but the line interface is kaput), and something like this would be a perfect replacement... and a good excuse to finally rebuild the battery like I've been thinking...

All the vertical integrated jacks I could find looked like they were going to be a tight fit through the case opening, so I thought I'd play it safe and go for separate magnetics. As far as putting them on the main board vs. the breakout... mostly an arbitrary decision. Either way, taking the...

I thought about that when I first looked at the datasheet for the ENC624J600 - it has a built-in cryptographic offload engine, but a) I suspect that's probably biting off a bit more than I could chew, b) it seems to be a moderate pain to actually use, and c) looking at the errata, a big chunk of...

A/ROSE as a concept has always fascinated me, even if Apple never did much useful with it. Last time I visited my local electronics-surplus place, they had a drawer full of 68000s and now I'm forming some absolutely terrible ideas around building an A/ROSE device of some sort just for the hell...

I almost decided to go with a CPLD, both to condense the two GALs necessary for the SE/30 down into a single chip, and to allow for reprogramming in-place, but decided against it just because I'm familiar with GALs and don't have a JTAG adapter. I might reconsider that for future revisions...

That reminds me! I hacked up a copy of Ghidra to (semi-) properly load and relocate A/UX's big-endian COFF binaries (it only supports a limited set of relocations, and still sometimes gets them wrong for data segments for some reason, but it gets code mostly right). I probably completely broke...

Yes, precisely! On that note, I ran across https://github.com/neozeed/aux2, which from what I can gather, seems to be partial source for the A/UX 2.0 kernel, and the example driver that came with the Driver Developer Kit. Even more interestingly for my purposes, the source includes most (but...

There's a lot to be said for LocalTalk - it's universal, you don't need much hardware to interface to it, and it Just Works. I've heard of the mythical EtherWave printer adapter but I've never gotten my hands on one. LocalTalk drivers are a bit of a different beast, but now I'm curious as to...

In the decade and a half between giving away my old SE/30 while moving house, and acquiring another one, I seem to have misplaced the ethernet card that I used to have for it. Having gotten a pretty severe case of sticker shock looking at what they go for on eBay these days, I have embarked on a...

Yeah, I think you're right. It started hanging again. I pulled the card out and it looks like they'd leaked more since I cleaned it up. Gave it another clean, and the issue went away again for the time being. This time I actually remembered to order replacement caps - here's hoping that they fit!

curiouser and curiouser: I hooked a serial terminal up to the modem port, and got a panic message when the hang occurs - always a bus error at the same address and PC. I also booted it headless with the graphics card removed, and just the network card present, and it came up with a console on...