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First time turned on in years and years. I have not changed the battery so I dont know if that helps or not . On switch on I get hard drive sounds and the what I think is the ram testing going up to end saying 00512 KB ok 080000 0000 201 - Memory Error -...

I am looking for a book or books about the early days of computers and mainframes. I am not looking to spend big money on a single book and ideally I be able to buy it on amazon/ebay/ someone here. Ideally british computer history but open to ideas. Thanks

Very random thread: What is the best mainframe (by your justified opinion) what the best mainframe you can have that one might be able to have at home - e.g. while it might be possible that someone has say a 1401/360 or something at home it isn't likely but might have say a PDP8 or something...

Hello, I have just bought a KSR33 and trying to bring it back to full life, I am looking for a few parts and I am sure parts I do not know I need - From the UK and most parts likely only local postage would be worth it. Looking for more if someone has a second or third of any of these items...

Housekeeping: firstly hopefully this is in the right section. Second, I am in no sense know what I am doing, this is my first time trying to repair one of these and my total experience is watching a few YouTube videos namely (Jerry Walker and tnmoc repair one). I hope that this is seen as...

So I have a TS05 tape drive, it has the funny looking plug that kinda looks like the UK plug but isnt. my understanding is that that plugs into a 874b (a being US and b being all others) power extension. My question is that outside of turning the power on at the same time as the computer does...

Is anyone looking to move on an unwanted PDP 11?

Firstly let me just say, this is just a wild idea, I am more interested in the idea and the steps that might be made to get there. Has anyone has seen UsagiElectric's videos regarding building a vacuum tube MC14500 processor? He was able to build it over a period of time, I have not seen the...

Hello Does anyone from the UK have any RC25 cartridges? For use in RC25 subsystem. Thanks Acorn

Ok in boxing there is a phrase pound for pound, working across different weight classes. So not actually focusing on the weight of the item but across different ages. What is the best mainframe and why? With any of this it is open for interpretation. You could say the design is better, set...

Has Elite ever got ported online/econet? Sorry if this is in the wrong section.

Might sound a very silly idea but has anyone ever tried to make their own paper punch cards? if so how did it work out? any issues to over come? ideas of weight of paper/card to use? The idea would be to user a printer to print onto card 3 outlines of cards then use some method for cutting...

Hello Collection only for this due to screen size and weight - Winchester area. Pm me for more exact if needed. I have an apple ic 3 for sale £75. I was told it was working when I bought it a number of years ago but take it as non working. There is a little battery leak onto the pcb. It is...

Excluding legacy systems old systems for years and will do for the lifetime of the buildings (nuclear power plants etc) Nothing these days is done quickly on a large old unit so…. What “programs” are actually run on mainframes? What should museums spent their big iron times running?

Hello, Thank you for looking. I am looking for a Documation punch card reader and to be honest it doesnt need to be a documation reader just any standard punch card reader. My expectation for asking for that was setting a lower bar. Location Is South/London but am willing to travel in the UK...

What mainframe would you like to have and why? - ignoring costs of running the thing, and assuming you had the space for it and things? What would you do with it? e.g. use it as the worlds most expensive clock ------------------------------------------------ My reply would be IBM 370, it...

Is anyone looking to send to a good home an pdp 11? - doesnt have to be working, just needs to have a hope of working again, Little to not much budget. UK

Does any one know of any working IBM 1401 in the UK? - or even parts of a 1401 system?

Hello, I am looking for 9 track tape drive. Southern UK but if the right item then anywhere in the UK. Regards Acorn