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I'm trying to write a PDP-11 emulator that emulates a KDF11-BA cpu board. The problem is that I dont know what's the best way to go about emulating the micro-ODT interface. I assume that there are no 'dumps' of the microcode and even if they were they wouldnt be standard opcode instructions so...

After getting my QBUS PDP-11 assembled from boards up and running, I decided to slowly get all the bargains that I can on UNIBUS cards to hopefully (one day) replicate what I did with QBUS, even if I know it'll be much harder. I still have to learn a lot about UNIBUS and I wanted to know your...

I am just getting into electronics and I don't fully get voltage levels, max current drain and others parameters used to define devices such as TTL etc. My question is: can you interface something like an rpi pico directly to the qbus lines? And if you need something like a line buffer, do you...

Thought I would share a photo of "my" DCT11-EM. There aren't many information about it online(except for manuals). Mine was used in a university (probably for teaching purposes), and I was wondering if someone knew about other use cases. Even better if there is someone that used it back in the...

Hi everyone. I've wanted to play around with a PDP-11 so I bought various cards and pieces to assemble one. Right now I have a basic system up and booting into microODT. The next step would be to try and boot RT-11 with a tu58 emulator but I've been having some problems. All the type-in...