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I have just obtained a decwriter II (LA36) 1977 is what the label on it says. After a bit of clean and tidy, check PSUs etc, in local mode the unit (almost works). I have a pin that does not fire when the carriage is towards the left. I think the ribbon cable is frayed/faulty - - anyway I can...

I have an old military computer (UK/NATO) probably 486/586. And LXI (or an LX1). However I dont have an (easy) way to get an IDE disk into the beast. Why not? A strange connector on the IDE - 60pin, comes in from a 50 pin (keyed) IDE. I have been hunting for ages - either for a disk or for...

I am looking for a few RS232 type terminals - not particularly worried if they are vintage or vetran/old. These are to interface to PDP11s of various sorts - when I dont want to demo with my teletypes. I would prefer not to use dip/minicom on a PC.

I am starting to look at putting one of Jorgs boards behind my KC341-B (some manuals call it a KC7341 AKA MPS). This is a long-term project and I am just in the initial stages - understanding the diagram and planning the wiring. I have not applied power to the board yet. I am that early in...

mair photos mair photos I was in the bunker tonight, dug oot ra disks and got youz mair photos: krebizfan I did not spot the spelling of DISC ;-) this kit came to me from the States - not from the UK - I see the mfr is in palo alto. So indeed the name is strange. When I started Uni...

Harry: Thanks for the sketch. For anyone else ploughing this route of mounting a front-panel I attach the sketch of the 11/45 back plate. I assume it is the same plate as the 11/70. I will report later today it it is not the same and/or

I can get lots more photos if it might help somebody. This disk unit is part of a large pdp8/i rack. Fixed disk, 19" rack mounting about 8" in total height. The disk containing cylinder is LIKE that of a RS03/04 - about 16" in diameter and perhaps 4" high. Very little on it by way of labels...

two replies 1944GPW and Matlock two replies 1944GPW and Matlock 1944GPW: Ta I have had the unit in "disco" 19" rack mount type case at present. The equipment covers meant that the panel was transportable reasonably protected. BUT it is time to build a more static display - in something that...

I have an 11/70 front panel - but not the complete computer ;-( The panel has been beagleboned with Jorg Hoppes kit. The unit has been in a portable/luggable case for a while. I now want to fit it into a DEC rack. I have BA-11 cabs and bits and pieces, but I cant find in the engineering...

some answers some answers Replying to my own question - in part It would look like I only need to assert PWR REQ (take it low) On a better scan SWTCN is actually SHTDN - shutdown - so I leave that high. I now dont understand the "return" (ground?) that each power supply has. If I am...

Some of my 11/84 PSUs are not working (working well). I am trying to find somebody with any skill or knowledge in debugging this hardware - H7202B. At the very least if somebody could explain to me what signals need to be held low to get the PSU to (try to) start that would be great. J5 pin...

Three questions: one: a similar message has been posted to a number of lists. Sorry if you are getting bombed. I have the front panel off a ?Russian? Capatob computer. Rumours are that this is a sort of pdp8/m. I am planning to reenergise the panel and drive it with Joerg Hoppes blinkenboard...

This idiot thinks he shorted the Anode (red lines in the circuit diagram in the link) to ground. Dont ask - scope lead and careless and and.. Anyway what was a nice pulse (but with a bit of ring) at that point has now flat-lined. I have some skill with an iron, but little skill in...

I am in the market for a DEC pdp11 tape reader/punch. If you know of one let me know pls?

I need moral support pls. I have bitten off a hunk more than I thought I had. I have a disk that needs an RH11 controller. I have (I believe) all the RH11 cards (BTW but what the ** is this unibus A/B stuff !!, can I simplify the build with only one bus?). but I don't have an RH11 backplane...

Those, and a few more photos, are in http://www.scotnet.co.uk/iain/DEC/RS03/index.html. That is a lot of cards to spin a disk and read the data - especially when the PDP controller is a bunch of cards too. M7758 and W906 I am going to have to go are read these ones up.

I dont know how widespread it is. Not sure if many people are aware of this. In Scotland we get a thermosetting polyester called "polymorph". It goes soft at about 70 oC - so can we worked with water just off the boil. I have just finished manufacturing some brackets to (finally) get some of...

I should know the answer to this, but I cant find the neuron with the info. An hour on the web left me just as neuronless. I wanted to boot up my rl02 Version 7 unix on one of my "currently with power" systems. I cant get it to boot on a 34/73/83/84 then I stopped. On my 94 I get @boot New...

cleaner that it was cleaner that it was Alloy wheel cleaner followed by some ultrasonic

My TS05 tape drive wont go online ;-( I have some manuals for the TS[V]05 drive itself but I cant find anything detailed for the M7196 controller. The manual says that the online light wont light when the drive does not "see" the controller. There are some wee bits in the TSV05 user-guide and...