What I (think) I know:
The PDP-11 is the computer that the first version of Unix that was written in C and went by the unix name rather than Unics or whatever the multics offshoot was originally called. This was made by DEC originally using Q-Bus but later switching to Unibos architecture wehre everything was a card on a backplane and as a hardware platform in the west it had a thirty year run with advances and upgrades but overal architecturally consistant.
Mini-computers often ran a time-share system where you had a bunch of users logged in over dumb terminals either locally or via modem. The original/older iterations of the PDP11 were refridgerator sized but had ended up shrinking down to something not too dissimilar from a desktop form factor, but most OSâs expected several users working concurrently as a sort of ancestor to cloud computing.
When the soviets turned from their own architecture research to cloning, the PDP11 ended up being probably one of the most cloned platforms for⌠a variety of reasons.
And that is itself a fairly oversimplified thing that Iâm sure details are wrong on but itâs a sort of âground level mythâ of the era of computing just before I was born.
i know there are several PDP11 tagged posts here o I figure maybe here is a good place to ask even if I fear the questions may be a bit dumb sounding:
Use:
as near as i can tell the hardware does not care what the terminal is so long as it conforms to connection standards and make the handshake. Whether itâs a line printer, a VT100, VT350, a PC, or another computer is irrelevant.
What was actual use like as compared to using a modern desktop?
I suspect getting data in or out would be by todays standards excruciatingly slow even for locally avalible material.
Iâm on a pubnix server and that server allows me to browse other userâs home directories and the system at large. This has proved helpful in that I was able to go âHey guys anyone interested in a thing make a dot file with this nameâ and thanks to another user whipping up a script iwas able to quickly get a list of everyone who had made said file so Icould go thorugh each one as i liked (though in hindsight wouldâve probably been able to make a script that hoovers everything into a compiled file in my home directory with some sort of character lines or other teltale break points.
I bring that up because my mind goes to this pubnix as about as good as i can reasonably expect approximation of what using a minicomp wouldâve been like. Full text enviroment, just poking away, and occasionally glancing at something else as refrence while you do things. I also very much doubt anything like tmux or screen existed that let you multiplex/have more than one application up at a time.
Hardware:
I feel confident enough with the keg-in-a-box style hard drives to not need to ask overly about those. Ditto the eight inch floppies, but have there been any interesting bits of storage media that just arneât used today or in the past twenty years outside of maybe tape?
I know there is a late iteration of the PDP-11 that effectivly shrunk a lot of the core system down to⌠a silver/white looking dip package with two gold looking chips on it? Has anyone, hobbiest, clone, or otherwise tried to make a portable out of the architecture? IE laptop, luggable, or even something like the apple IIC in formfactor?
Likewise has anyone, probably the soviets, made extensions to the architecture or even tried extending it to 32bit? I want to say the original had a 16bit bus, but there was like a 22 or 24 bit bus variant?
Iâm mainly just poking about and trying t ofindm ore about an architecture just before I was born. I have this screwy idea of an old mall that was built in the 70âs and closed in the mid 2000âs when the recession hit that had a PDP11 as the thing a lot of its automated systems were controlled by (lights, rolling shutters, door locks, alarms, etc) and nobody ever swapped it out for something newer because it worked thus why bother, getting something to replace it would equite redoing a lot of the things that plugged into it, and I just like the concept.
A group of teenagers doing the youtuber thing of exploring the local dead mall, and shenanagins happen to get one of them to want to try finding a way to make it Not Dead.
Would the hard drives or tape systems have any recoverable data? assuming the data closet still was weather proofed and rats hadnât decided to nest in the cabling. Thereâs not a chance in hell of the thing powering on but any chance there isnât cap juice and corrosion eating the thing?
How easy would getting a modern workalike be? I know the PiDP11 is a thing but thatâs more a hobbiest exhebit rather than âhere you can plug things into it.â