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Following this. You may want to look at the PB140 CPU card schematics, lot of similarities there

I concur. The bitstream reverse part is impressive, and also a good read Keep up the good work

Hello, I knew for a long time that this series of the powerbook has a SPI bus on the modem connector. From the developer notes it's mentioned that the SPI host is likely the Misc GLU: The documentation (Modem Electrical Interface section) also describes how to switch the modem slot from...

Leaking prototypes :ninja:

Interesting, thanks :)

Memory refresh ? and probably minor but sound

That's tricky because sometimes some lines looks OK outside, and with the angle inside the powerbook the broken wire doesn't have continuity anymore :( PITA to find out

For the top one : 99% this is an early run of a RME HDSPe MADI Card (not the FX, the ones without the DSP in them). First runs came with black bezels, the modern ones are polished. They cost about $1000 each new, don't know about the resale value MADI is a pro digital interface, think...

The wire can break inside the cable on theses. Common problem indeed. One of mine does that, cable is definitively broken It can be the keyboard which is broken as well. Interconnect is just more likely

Mine has a ROM slot as well. That's a feature of "early" boards. Also came without a ROM, so I flashed a 840av ROM into a GGLabs SE/30 ROM, put it in the slot and it booted :) Si no need to build anything custom, 2MB flashable ROMs from Mac IIs will work.

Ho nice, happy that you managed to make it work :)

I had issues with ZIF G4s if the VRM was a little too weak as well as heat issues

Sounds similar to my 840av. We are back to theses times on DDR5 based systems, I've got a few of them with 6-8 minutes of memory training each boot

On a 5200 it's a Cuda, since it's LC630 based. Your problem is weird. It would look like a PSU but all your test would suggest it's fine Do you have a Mac around with similar boards to rule out the backplane connector and or PSU ? (LC630 / 6200 / 5300, etc ?)

As promised, this has been released here

What does the control panel do ?

Introducing ADBDB. ADBDB is a Developer/Debug Board based on @tashtari work. It was created because working on a beadwork work until you start fixing more the breadboard than doing actual work. It's a small PCB (10x5 cm) hosting all three tools (test-host, test-device, adb-analyser) with a...

Not really, it was because of two tho things : - not enough RAM for the installer - no ADB working. As far as I know, ext2 is always written in little-endian. I used aranym because running m68k binaries was easier, you could probably have gone with any other old Linux host for that

Nice, good job !