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I picked up a bare-bones PDP-11/23 a few weeks ago and it had this strange quad size card in it. Seems to allow another dual size card to be inserted into it. https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/Board1/ For other pictures of this thingy, you can see here...

Hi all, DEC newbie here. I acquired this MicroPDP a few years back (don't recall exactly where or how). Here are the boards... M8639, M8067, M8189 the rear... When I turn it on, it tries to boot I can also get into a menu... But booting from DU0 never works. I do see the...

Hi all, Several years ago, I acquired a MicroVAX desktop standing thingy. It has been in storage for all those years. Last night I decided to boot it up (prev owner gave me the un/pw for it) and lo and behold, I logged into VMS 5.3! Then I remembered, I really don't know anything about VMS. I...

Hi all, I recently acquired a very nice decwriter III and it seems in good nick. However, the self test "hangs" on the return direction of the second line. Here is a video on it: anyone have any ideas where to look? In local mode, it appears to work properly. I havent tried any external...

Hi friends. This rack is available for free. I am located in 10510 happy to drive, up to say 1.5 hours to meet up to transfer vehicles? https://w2hx.com/ForSale/DEC%20Rack/20200719_114742.jpg https://w2hx.com/ForSale/DEC%20Rack/20200719_114751.jpg it is in very nice condition. Comes with...

Hi friends. This rack is available for free. I am located in 10510 happy to drive, up to say 1.5 hours to meet up to transfer vehicles? https://w2hx.com/ForSale/DEC%20Rack/20200719_114742.jpg https://w2hx.com/ForSale/DEC%20Rack/20200719_114751.jpg it is in very nice condition. Comes with...

Thanks everyone for the answers to my previous question on memory compatibility... So I picked up a microVax II that was available from someone downsizing.. I haven't yet researched what all these boards are, but I know that it has no ram boards (only 1MB on the CPU board). The unit has 4...

Hi friends, Picked up a microvax II at the most recent VCF east workshop day... It has no memory cards (other than the 1MB on the CPU card). Some simple googling of some documents suggests that the microvax can only take 16 MB of RAM. The document I found only references 4MB cards. Can...

Hi friends, I've been building up a nice little PDP-11/23+ with cabinets, RL02's etc. To really round things off, I'm looking for a open reel-to-reel style 9-track tape drive to add to the system (don't ask why, punishment must be somewhere in my nature). Not interested in the...

Hi friends, I've been interested to get a PDP-11 for many years but the opportunity to acquire one at a reasonable cost and somewhat local had not presented itself. I finally found a system on craigslist and Lou N2MIY and I rented a cargo van and we drove about 30 miles to pick it up. Well...

Hi folks. In the coming weeks I will make some posts about a trip I made with Lou N2MIY where we picked up one PDP-11/23 one PDP-11/73, each of those in a short rack, one MicroPDP-11, a PDP-8a, four RL02's, fourteen RL02 packs, etc. It was a big haul. I am probably going to make a full...

Hi folks, This is my first vintage computing project. I have a PDP-8/e with the following boards in this order. FRONT PANEL M8330 KK8E CPU Timing board (system clock), replaces M833 M8300 \ KK8E CPU Major registers M8310 / KK8E CPU Major register control M837 MC8E Extended...

Anyone have a spare (working would be preferable)? M8357 RX02 interface card contact me directly w2hx () w2hx ! com Eugene

Anyone have a spare (working would be preferable)? M8357 RX02 interface card contact me directly w2hx () w2hx ! com thanks Eugene W2HX

Hello folks, I am the new owner of an IMSAI with the Cromemco Z80 ZPU board. I have yet to receive the system from the seller, so I am likely to have some troubleshooting ahead of me. However, I am interested in running a floppy/hard disk if possible. I have come across an drive system from...

Hello all, I am starting to think about getting involve in vintage computing to relive some of my misspent youth. I have come across an available IMSAI 8080 with a Z80 card in it. I was wondering what people's thoughts are about whether I should stick to 8080 or go with Z80. Some thoughts...