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I've built an internal HD20 emulator for the Plus and (presumably) the 512ke (but I don't have a spare logic board to socket the IWM on, so...). It sits between the IWM and the logic board, which allows it to be internal while still letting the floppy port on the back of the machine works. It...

Are there easier-to-read schematics out there for the Plus than the horrible halftoned scan that's in the pack that's been floating around forever?

I was lucky enough to get hold of the Outbound Laptop docking card for the Macintosh SE. This card allows the Outbound Laptop to drive the zombified ROMless SE like a giant PDS card and use all its I/O. The card consists of a single programmable logic device and an enormous quantity of 74...

There is an infuriating but not totally useless tool to probe the early boot sequence of A/UX provided by the launcher. If you pass the -b option, followed by a virtual address within the kernel, the instruction at that address will be rewritten to be a reset. Thus, if the computer resets...

per title. It might be a bit premature but I'd rather get it over with and not worry about it.

Some time ago I promised @demik I'd create a thread to post pictures of rackmount macs. Belatedly, here it is. I had to get my AppleTalk router out of the rack for some maintenance and took a couple of photos. This is a 1U rackmounted LC II. The case is rather messy and there is a lot I'd do...

I wrote these bullet points for a forum member in PM and they encouraged me to post it as a thread here. Lots of people know IP fairly well, and a lot of that knowledge is transferrable to AppleTalk. Here's a very brisk guide to layers 2 and 3 in AppleTalk land. First, "What is AppleTalk"...

Someone here, some time last year I think, posted a link to a list of capacitors for recapping the Colour Classic AB, saying that the ESR mattered on some of the PSU caps, which I can believe. I remember this quite well because they were correcting me, and were right to do so... :) However...

This morning I hacked a simple example NTP client to work under A/UX. It's here: https://github.com/cheesestraws/aux-tinyntpdate It's not interesting as a piece of software, really, but for those of us who like living without PRAM batteries, it might be handy.

This thread is to save people from the 'not reading the right man pages' hole that my afternoon fell into. On A/UX, by default, AppleTalk works like it does on MacOS: it fishes the network interface to use out of PRAM. If you don't have a PRAM battery installed, it will therefore default to...

A quick post for people who don't follow the "Hacks and Development" subforum. I've built a VNC server for A/UX. It runs outside the Mac environment and allows logging in / changing user sessions on the fly. Software and installation instructions are at...

Since logistics currently requires software projects, I've been having a go at building a VNC server for A/UX 3, both inspired by and based on @marciot 's MiniVNC. Although this started off as a straight fork, in fact, most of it has now been rewritten because of the very different problems...

There don't seem to be much information out there on writing applications for A/UX that aren't just ports from other UNIXes. I've now written a couple of Mac applications that use A/UX facilities—and I've done it more than once, so by YouTube standards that means I'm an expert. Heaven help us...

While I've been away from home I've been playing with writing a hybrid A/UX application or two. I'm hitting a very strange thing, and I'm posting in case anyone has any ideas. I'm using ordinary UNIX sockets for TCP, using the normal send/recv affair. Every so often, after somewhere between a...

When talking about making sure you don't have any outstanding VBL tasks when a process exits, IM:Processes helpfully suggests: I'm not sure about "easiest", but this procedure sounds both very useful and fraught with danger. Has anyone done it before?

I spent the last couple of evenings tracking this down so I thought I'd leave a note here in case anyone else needs to know for whatever bizarre reason. This may, of course, be common knowledge and I was just looking with the wrong keywords. If so, it's been a learning experience. A certain...

I'm trying to track down an A/UX oddity where I'm getting spurious MacTCP errors. I know that A/UX's MacTCP isn't really MacTCP, but is a compatibility layer. Presumably this compatibility layer is a driver somewhere, because, after all, its published API consists almost entirely of PBControl...

A/UX 3.0.1 installs from a ZuluSCSI fine and easily, no need to muck about with optical media. I just did this on a Q650 today. Copy a big empty HD image to the SD card as hd0.img and copy the A/UX CD as cd1.iso or some other ID if you prefer. Make sure the Apple Quirks switch is set. Then...

I'm confused by the structure of the .MPP driver. This is certainly the case for the one that came as far back as System 7.1, which is the earliest I've got on me. Normally, you'd have a driver header that points to the different routines the driver provides, followed by the routines. That'd...

Another slightly odd one for people's information. Symptom: SE AB with badly-adjusted height image: while adjusting the potentiometer the screen collapsed to a single line in the middle of the screen and turning the pot had no effect. Cause: Turned out that the height potentiometer itself had...