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"does not ship to France"… oh well. LOL : "Ships worldwide" + "Excludes: [165 country names]" (yes, I did count them with CLI tools :-p)

I was just given a G4 MDD which "stopped working suddenly". When removing the PRAM battery I had the feeling it actually was in the wrong polarity, but I'm not entirely sure. Fans spin, the power LED lights up, but that's it. I've tried: - reseating the RAM, the CPU… - disconnecting unessential...

LOL! Possibly they later on patched the layout to bypass them but manufacturing still had the pick&place configured to put them. Next time I open mine I should check if they're here. What part of the circuit are they on?

If anyone is looking for something to do, I think a website to select PLDs based on pinout compatibility with an existing chip would likely be very useful to many :)

As explained in the dev notes, the "Omega" chip as they call it is a PLL, which generates different frequencies from a base clock by monitoring the drift of the phase of the clock wrt the base one. The config pin simply chooses one of two built-in multipliers, and I guess it's also connected to...

Google drove me back to 68kMLA 🙃 : 🤷‍♂️

The fact that the overclocking mod changes R14 which is right next to the chip and the quartz and that it makes it go to "33" (but anyone actually measured it?)… I'd bet there's a scaler (or PLL then, if it needs to go to 50) in this chip that is configured by this resistor.

That's what my scope shows here, cf. previous posts.

Yes it's already documented in this article I mentioned already: https://lowendmac.com/2014/overclocking-the-mac-lc-series/

I'm thinking it might be useful to have some accessories for 3D printers to probe all pads on some random boards and generate the netlist directly… 🤔

In case you're wondering, J7 is some kind of video feature connector to pass through signals from a PDS card, the pinout is in the developer notes.

Rechecked properly on the table, but still 15.5 or less, either the quartz is drifting, or charging it with the probe changes the freq. But yeah, all sources point to 33MHz so that should be it.

I'll check again tomorrow, it's 3am here :-D I need to take the logic board out to clean it again, after the recaping, there's still some green stuff from leaks.

Maybe I messed up when counting, with 16.5 sines it'd give 33MHz.

Hmm it seems consistent with this article about overclocking the LC-III to 33MHz… Yeah it's possible this old Metrix is not well calibrated also.

Since I had it already open and the osc was 1m away with a brand new probe to test, I had a look… at first I thought I would get anything since it's a 20MHz antique, but it seems to have a magic EXP.10 button that shows a nice sine wave. I counted almost 15.5 alternances for the whole 10...

If you don't have a second one to measure I suppose I can have a look at mine with an oscilloscope this week-end. Mine says: S0107 92-52 (likely manufacturing date)

Wow, didn't know such a thing existed… wonder if it'd fit my LC-III. Almost as simple as adding a slice on RISC-PCs :)

There's a new set of PowerBook RAM expansions by siliconinsider (I think there was a thread at one point ; see twitter for the announcement)

After the rincing of the WL (I wanted to make sure there isn't anything left diluted on it) with demineralized water and drying I wanted to make sure it wouldn't get any moisture on, it's mostly used to limit further corroding. It's an Eyoyo 10" LCD I got on amazon. There are many similar...