The RD-52's might be of some interest for anyone wishing to upgrade a floppy-only (RX-50) DECmate II.
Hopefully at least one of them is in a useable state.
From address 123520, the parity interrupt test begins. Memory with parity?When I hit a key to continue it throws about a dozen errors in the form 'UNEXPECTED TRAP TO 4 TEST 000340 ERROR PC 123736
Shhh!!!! I was hoping that this wouldn't have been posted here! LOL...
Interesting VT05B video terminal. Has 'issues', but shows signs of life.
Wouldn't it be a 7915 for a -15V supply?Oh that one's a pretty simple fix: One of the - power supplies is out, probably due to a blown transistor. On my VT52 it was the -15v supply, I started to troubleshoot it then just said screw it for now and put in a 7815. Worked perfectly since.
Yep. Mis-remembered it. Once I decided to go this route the toughest part was finding a spot to mount it on the big heat sink in there. I thought about replacing the transistors, but just figured it's easier to go with modern technology sometimes.Wouldn't it be a 7915 for a -15V supply?
Well, you *could* have afforded it. Just need to drive to NC. Was in sweet condition, at least on the exterior. The embedded key-pad seems novel; don't think that any photos of these that I've seen showed that on the keys.It will be interesting to see what it sells for. Probably way more than I can afford.
I offered $100 for one of these boards and it arrived yesterday. It works perfectly, was well packed, very clean and the gold edge connector fingers look as if the board has only been inserted and removed once. There are some pen marks on the dip switch and some small scratch marks on the blue connector, but otherwise the board seems almost new. The seller still has more than 10 available.A huge pile of RX8E / RX28 controllers for sale?
DEC M8357 RX8-E OMNIBUS INTERFACE 5011374 B for PDP-8 SYSTEMS | eBay
DEC M8357 RX8-E OMNIBUS INTERFACE 5011374 B for PDP-8 SYSTEMS | Computers/Tablets & Networking, Vintage Computing, Vintage Parts & Accessories | eBay!www.ebay.nl