Recent content by Roland Huisman

Thanks a lot! That is way cheaper :biggrin: I love the offer from gwiley, but next Friday we get the keys for our new home. So we have to move the heavy stuff also... :unsure: And I'm not sure if we could meet then. But I can reed the book now. Thanks a lot! Regards, Roland

To use the Unibone wrap at least: AC LO DC LO NPG These signals were routed trough the Unibus in-out, but not trough the backplane itself. And I would also advice to place a G8000 and wrap the +8V on the backplane. Then you can use a M7800 in RS232 mode as well. (A G8000 clone design is on my...

I would love to buy this book, but shipping triples the total price... :oops: https://www.ebay.com/itm/126366541640 So looking for an alternative... Is this little book as a PDF online somewhere? Regards, Roland

Boards are in the correct positions, it is the MM11F. Here are some pictures in a better resolution. (one board is missing a transistor) But now you know what the boards look like... There is a seller in the UK who had all the boards a while ago. I already had a broken H207 which is now on...

So you are looking for these parts. I've been searching for it as well and got it complete. But there are some differences between memory modules for the pdp11/20. So make a part list and try to find the boards. The hardest part is the backplane... But with patience you could wrap your own from...

sold

I think the Qbone or unibone is suitable to emulate such a drive and controller at once. But someone has to make the driver for it. Maybe someone is already working on that? I haven't heard of a drive only emulator. Regards, Roland

Machine is still for sale

Vince, are you going to build a modular synth? :love:

I have this Cromemco Z-2D for sale. I'm located in the Netherlands. Off course I prefer that someone does a local pickup, but we can talk about that. The terminal is not included, I've used it to show that the machine is working. I'm not sure about a price, it also depends if someone does a...

Thanks, I found a few of the original models on Ebay 'new old stock'. So I will try and see how these will do. The original ones in my PDP8/M were fried as you can see on the brown plastic. That is not the normal colour. My PDP11/10 and PDP8/F have the same power supplies with original mains...

My favourite little PDP8/M broke down today. :cry: One of the power capacitors has a short circuit and tripped the mains fuse. The capacitors had a heavy life in the past because the fan broke down once. So these capacitors were fried and I'm really surprised that these last here for several...

You can have a lot of fun with systems. For me that's good enough. And they will be called vintage in the future...

Everything built by humans can be built by humans again... There are a few questions to be answered. How much time do you want to invest, and are you aware of the fact that such a project can get more expensive than buying a real PDP11? If such a project is just for fun and learning or a...

That 11/20 doen't seem to have any memory in it? 11/45 are quite powerfull but if I can't lift a CPU on my own, then it is probably not for me. The same is for an 8i. These are not easy to handle...