Recent content by stepleton

I'd be interested to see what you see in the US --- share a screenshot? Attached are what I get when I search ebay.co.uk for "centrecom 210T" and "centrecom 210TS", sorting up by price (zoomed out to make more offers visible), and remember that international shipping often isn't priced in. Note...

Also: maybe your SE/30 already has Ethernet but no 10bT and you don't want to find an alternative? Also: maybe you already have a NuBus Ethernet card and you don't want to find an alternative?

Rather surprisingly there are other computers besides Macs and PCs. Older Ethernet-equipped workstations and other kinds of personal computers often had AUI ports. Many also had BNC ports, but as discussed, I don't want to start setting up a 10BASE-2 network right now. Here's the back of some...

This is correct: you can see it as the rightmost of the three large chips at the centre of the Lisa I/O board. Aside from LocalTalk (which was an option for Lisas running MacWorks, at least in some versions), I've never known an application to make much use of the serial ports beyond 57,600 bps.

Whoops, I've left out your 3.5" disks! These are important to save too, but here there are many more options available. Basically any Mac that can read 400K and 800K disks will be able to archive those, provided they are in working condition. Important: be certain to use Disk Copy 4.2...

I am not surprised to hear that this machine was the centrepiece of a collection! It certainly is for mine. Choosing not to power it on right away is wise, and not only owing to the condition of the logic boards. While the power supply is not known to be particularly unreliable, it will likely...

That may be so, and I suspect it is, but I'm also mindful that this post will turn up in web searches for people who may be in different situations. Also, something closer to "American style" mains voltage turns up in places you wouldn't necessarily expect. Here in the UK we have 230 VAC mains...

Important addendum, as I incorrectly indicated that there is no hardware distinction between this machine and an American (or other market) Lisa except for the keyboard: I forgot about the power supply! Do not attempt to plug your French Lisa into an American wall outlet --- your Lisa wants...

Congratulations on your rare find! You have had some very good luck, although if this was part of settling your father's affairs (as you've said "was") then my condolences. I am not so certain of how to advise about preparing this computer for sale. Treating the corrosion damage was a good...

For every machine of mine with an AUI port, I'm not going to get one of those hubs --- at $20/pop plus shipping to the UK in my case, not counting the fourteen quid AUI cable (or maybe four quid plus slow shipping from AliExpress for something that may work but wasn't made for the job). I'm...

10BASE-2 has an appeal. What I've found harder to get hands on at a reasonable price is the mass of cable segments, T adapters, socket-to-socket joints/extenders/splices/whatever-they're-called, and terminators you need to build the network. (Yet another "used-to-have" situation for me.) Cat5+...

That looks very promising indeed, particularly the 14-pin variant! It looks like the official name for this type of connector may be the 3M Mini Delta Ribbon (MDR) connector. I will order some and look into making a nice little PCB.

I'm happy with my hack, but I'd prefer not to have to chop up the MAU and strip so many itty bitty wires in the way I've had to do. Is anyone aware of a way to get AAUI socket receptacles? It would be a way to make a much more elegant little AUI<->AAUI adapter that works with plenty of AAUI...

Plenty of older computers have only a 15-pin D-sub AUI connector for Ethernet. Apple tended to avoid this connector on Macs as it used (basically) the same 15-pin D-sub connector as the video connector, so they came up with the compact AAUI connector to use instead instead. To connect either of...

(tangent) One of my favourite weirdo old computers is the Whitechapel MG-1, a Unix workstation from the early '80s. The mouse is handled in hardware by an I/O co-processor (a microcontroller basically) that takes care of all the "human interface devices", which I guess is how the Lisa does it...