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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 !

Same here. 1825 works with MPLAB, for the 1704 I had to use a T48. IIRC there is a way with the 1704 and MPLAB+PICKIT3, you have to do it with the CLI and not within MPLAB itself

Didn't use ERC ? :)

Intersesting thanks. Very clever as well. Too bad you cannot use the SCC for that (IEI / IEO) from the PDS slot, or in any mac really, because it can do the same thing (in hardware) and maybe avoid spurious interrupts. The BBU having no provision for that doesn't help either

Nice job. I would have gone with two hates of a 74HC14/04 or something as far as the delay goes. Or a 74LS31 if precision is needed. How do you handle interrupts on a SE ? Just create another level with IPL0-2 lines that isn't used and put a vector there ?

Damn you build a whole team ! The black is very nice indeed How did you do these corded cables ? S-Video ?

@jmacz Thanks. Build on jmacz journey here. What keycap did you use ? I remember someone else mentioning them but can't put a name on them