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The specs are not very clear how much of the MMU each core actually implements…

Interesting, but if you expect to run OSes on this unmodified, it won't work: Embedded PPC chips only support compatibility with the userland programming model, not the supervisor one, specifically regarding things like the MMU. So you'll need some things to emulate it.

The other way I'd say yes, this way I'm not sure, you'd have to check the developer notes for both models, I recall they changed a pin function somewhere in the line because the ROM wasn't on the board anymore.

Maybe you can find a hackerspace or a fablab near you that have the required tools?

I suppose nobody has schematics for those… I also have an MDD which doesn't start and was given to me in this state…

Btw, having seen this thread about C22, I just confirmed mine has the + pin of C22 at -5V, which is not really a good idea. It still works but it will probably shorten its lifespan. Not sure what it would do to tantalums either…

I have this one bookmarked from some mac youtuber: https://colorfabb.com/silk-grey-ral-7044

Yay!

The PDS slot pinout is in the LC-III Developer Note btw, page 30 (well, 40 in the PDF).

You made it to Hackaday :cool:

You made it to Hackaday :cool:

Yeah no, my Performa 5400 doesn't have one.

I have similar plans but for ADC first… Not even sure I have a machine with this connector anyway. As for pins, it's possible to find bare pins by 100 instead of rows which won't have the pitch required. Worst case you'd use two layers of PCB to keep them aligned and straight.

Look ma, no bodge! Kudos!

200 bytes/s = 200*8 bits/s = 1600 bauds (well, bits/s don't always equals bauds, but in most cases that's it), so not that far.

Probably not entirely but at least import the traces, and compare the netlist yes, footprints might need to be replaced… Anyway, still haven't finished the netlist part for the OpenBoardView import though, and it needs much less info than for full PCB import.

Aw, cool! So that means I'll have to write Sprint import in pcb_new?

I can't find it back but I recall seeing a video recently showing how to open these kind of things using a rubber mallet but with some heating involved, with a hair dryer, and then gently hitting it for quite some time. I suppose a hot air gun from a distance would do as well.

Well I'm even more old-school, I consider schematics ought to come with the hardware you buy, just like was common practice 40 years ago. :p

Starting from the schematics allows generating a proper netlist and in turn using them to make sure tracks are correct. Also, while KiCAD started to standardize parts layout for schematics, and the usual placement is to have components as vertical blocs, it's quite possible to recompose and...