[p_l]

NuVAX is based around software reimplementation of VAX cpu with special-purpose I/O system to reuse existing interfaces (important when you need to deal with custom interface cards, for example).

Funnily enough, it appears that real vaxen ended up being produced for shorter time than PDP-10, despite efforts going as far as encasing last high-end PDP-10 prototype in concrete and dumping it in mill pond (or so the story goes), as known single-chip PDP-10 were produced at least as late as 2004, after last VAX rolled off production line.

[DonHopkins]

"If you're not playing with 36 bits, you're not playing with a full DEC!" -DIGEX (Doug Humphrey)

[jfengel]

I didn't realize anybody still remembered Digex.

[DonHopkins]

DIGEX was Doug Humphrey's nickname long before he started an ISP using that name.

Doug had a KA10 in the living room of his apartment in a high rise tower in Maryland, near where I used to live.

He had to take it up the elevator in two pieces, and the elevator had a hard time aligning with the floor because of the weight, so he had to lift it up a foot to get it out the door.

The apartment didn't have the right two phase 220 volt power outlet, but it was possible for two people to simultaneously plug it into two different 110 volt outlets at opposite ends of the apartment that were on different phases to get it to work.

It didn't have any memory except for the registers, but you could load a loop of code into the registers and run it really fast (since they were mapped to low memory), to keep the apartment nice and cozy warm.

Good thing electricity was included in the rent!

[icedchai]

I barely remember them. I worked for an ISP that had a dual T1 to Digex. We also had a couple to UUNet and another to MCI. Digex was cheap compared to the other two.

[slowhand09]

"Radix-50 Rulz!!!"

[slowhand09]

So you are a DEC fan but don't remember Radix-50 encoding?

[skissane]

> as known single-chip PDP-10 were produced at least as late as 2004

Who was producing a PDP-10 in 2004? I'd love to know more about this.

[TheOtherHobbes]

XKL's TOAD-2 is/was based on a single chip PDP-10.

The hardware is used as a router, but supposedly if you ask it very nicely you can get it to run TOPS-20.

[pinewurst]

https://commons.wikimedia.org/wiki/File:XKL_TOAD_2.jpg

[p_l]

Living Computer Museum had two XKL-2 running TOPS-20.

[lproven]

Yup, the XKL TOAD ("Ten On A Desk") and TOAD-2.

https://en.wikipedia.org/wiki/XKL#TOAD-1

[p_l]

At the time of TOAD-1, there were also still machines built based on SC design, for effectively singular consumer - Compuserve.