November 1st, 2016, 01:28 PM
Ohio Scientific 560Z (PDP-8) Board Clone?
Does anyone know if someone has already cloned the OSI 560Z board? This is the CPU Expander that allows you to have a Z80 and Intersil IM-6100 (PDP-8 on a chip). There's one in a lot of boards I may purchase, and part of what I'm willing to spend on that is in preserving the 560Z artwork. I only know of one built out and being used, and its owner won't let me take it apart to clone it :P
I assume people would want these if I cloned them, right? I'd send it off to Mile High Test as I did with the OSI 495 prototype board.
November 1st, 2016, 07:59 PM
I might jump in on that one. Still have some money leftover from the Mark-8 auction. I really just want the backplane to get a correct setup for my 500 and 440 boards (and now I have an OSI keyboard). I tried to persuade the seller to sell separately but he wouldn't go for it.
November 2nd, 2016, 04:05 AM
I'll be selling off most of the other boards in there (might keep the card extender), so you're welcome to buy the backplane off me separately -- I'll make you a good deal. No need to drive the price up to get what you want
For that matter, I'll probably be selling the original 560Z board once scans are complete -- I have no problem with building/using a reproduction, and I'm not really a *collector* so aside from the utility of copying it, an original doesn't much matter to me.
November 2nd, 2016, 02:45 PM
Sound like we are going to beat each other up on this one, I to will replicate the 560z and add them to my original blank boards if I win
Originally Posted by glitch
November 2nd, 2016, 04:17 PM
I'll be reselling it after scanning, so if you're wanting the original you can just buy it off me if you like.
Originally Posted by Klyball
November 6th, 2016, 06:56 PM
November 6th, 2016, 08:08 PM
not me, hopfully glitch or someone we know
November 7th, 2016, 04:07 AM
November 7th, 2016, 03:21 PM
Whew! That's a relief. I was beginning to feel regret for not bidding, but now I'm glad I didn't drive up the price.
November 14th, 2016, 07:20 AM
Boards arrived over the weekend, it's a good thing they're getting copied because these things are pretty rough! I'm guessing they either sat in the bottom of a box of forgotten projects with many heavy items on top of them, or were in a box of scrap. There's corrosion and some "so deep they cut traces" abrasions.