Recent content by Schroeder

Ahh ok, that does explain it. So, will be patiend.

Does one know how to get one. Tried the mentioned email address but no response.

Did they put a Unibus video card into the Terminal. It looks ... interesting.

Not going to be disappointed, never ever. This is a Product build a long time ago and I have to judge it that way. For me this VT is more valueable than any Apple I. It paid a part of computer history, maybe not perfect but still giving some good lessons.

No, I don't ...

It was listed for Euro 99,- at ebay Germany. Missing some keys. Fixed it temporarily with VT100 keys in the top row and moving some to the main keyboard. I know, many of you have one possible in their collection, it is maybe not that rare, but anyway, this is my first VT5x series Terminal...

I usually open the Dallas and add a battery holder. I have a few but most 4000/60 with power connection issues. Not sure why. Our house is near Älmhult, in the south of Sweden

Please use my response with caution, I'm in Sweden right now with no access to my 90a. What I remember is, that the batterie did cause issues. I had to replace it. I also had to reseat the memory. Beside all this, I had a burned pin on the power supply connector.

Too sad, I do have a 4000-105a, same board, same leakage. After weeks I got it to respond. Still it does not like the memory ... 3100-90 and 4000-100 are close, 4000/90 is different. Look for 3100-90, there is manuals. Look for the CPU type

I do have a 11/24 with graphics. The console is a VT100 box with the video out looped back into the graphics card, this to have an console OSD. Maybe one get DECWindows running on this PDP. The 11/24 is extended by a 16 slot A/B qbus backplane hosting the I/O cards. The system is to test jet...

The BA Box the CPU is sitting in is my test setup. Other CPU boards does work. Voltages are ok, DC OK and PO OK is present. The Board did work before is was cleaned from acid. I have checked the cleaned area and traces are looking ok. Without schematics I will be lost ...

The CPU Board is on my table now. I did another visual inspection of the cleaned area of the board which was mainly impacted by a battery leakage. I soldered some parts even knowing that they had good contact just to be safe in case there is maybe a small cut which only disconnects when the...

Correct, and the DHQ11 ist set to that address. The CPU SLU LED is going off with that setting. That is why I hopped it might work with this one.

Thank you Dave, not the anwser I wanted ... ;)

Did not do that much with my PDP-11s, was more focused on my VAX systems. So, I forgot a lot about addresses and so on. So, I thought. lets start with a simple setup to relearn...and now I'm stuck. The backplane is A/B A/B with M3107 next to the CPU. The front foto shows an SRAM memory card...