In case anyone’s interested, I’ve added two new videos on the 9845. Hopefully not too stuffed with errors! Introducing the HP 9845: An Early Workstation - https://youtu.be/D8tMkB5MeM4 Deeper into the

#HP9845

Hi Adrian, Bletchley is on the main Euston line to Birmingham. There’s also that oddball Southern train that get from Clapham Junction — although, as Adrian says, it's much less frequent, and generall

Hi Brian, I’ve proposed the 9135 goes to the National Museum of Computing. I cover the HP collection there. If you’re interested in getting old HPs running, I could always use a hand! We could have a

Or we could arrange for donation to the National Museum of Computing. I'm coordinating the HP collection, and this is a model the collection doesn't have. -c

A working one?! Sure! -c

Hi JB, Evaluating caps is an early activity for most of us. I was more trying to find guidance about the specific importance of voltage to system longevity. This was triggered by my local supply being

Well that’s cheered me me right up! :-( But following from that logic, we should all run gear at the lowest voltage it tolerates in a given range. So in 220-240vac mode, we should shoot for 220vac, mi

Hi folks, Thought I'd throw a general question out there. How sensitive do you find your vintage HP gear to main voltage tolerances? I have two reasons for asking this: 1. During first power on proced

Deep longing….

Thanks for the heads up. It's gone now! :-D -Colin

Thanks! I’ll try. Kind regards, Colin

#HP1000

Just an opinion… Running HP 1000E is $1-2k. Non-runner $300-$800 depending on condition. Drives are actually rarer than CPUs in my experience. Even an unknown by 7906 has got to be worth $700 or more.

Just posted an RTE-centric YouTube video. Hopefully I got most of the facts right. It does include a short demo session of using the system. https://youtu.be/nWJoUVBR9CY Kind regards, Colin

#HP1000

I don’t see why you couldn’t do a 2645 CTU emulation with a little programming. There should be drivers for that on the RTE side. I believe it’s just uses some special escape sequences which you can l

#HP1000

Easiest ways I can think of (and I’ve not tried this myself) is to invest in a second HP-IP interface and run two copies of HP-Drive. Make the second one a floppy drive emulation. Inserting files into

#HP1000

Hi folks, I think I’ve found about the earliest reference I’m likely to find in the public domain: “Lord, what’s software?”, Measure, January 1969 , pp. 6-9 In this article, the head of software, Roy

Gosh, I seemed to have kicked off a wide ranging conversation! Circling back to the strart... @Roland, thanks for the copy of Poynor’s notes. They confirm RTE was introduced in 1968 and provides a bit

Hi - I know there are some HP veterans on this list. Perhaps someone here will know.... I'm working on a YouTube video giving a basic introduction to RTE. I wanted to discuss its origins a bit. While

If only you’d said that 6 months ago! I’ve got my A600+ up and running now. https://www.youtube.com/watch?v=nFech4lfNWk Next video is going to be a quick look at RTE-A -Colin

Thanks for the input. I’ll crack on with that today and let you know. Kind regards, Colin