The GEC Series 63 [1] was used in the Alvey programme. I was a founder of a startup that used a 63/40 to provide a (pre-internet) online service over X.25 links

The GEC Series 63 [1] was used in the Alvey programme. I was a founder of a startup that used a 63/40 to provide a (pre-internet) online service over X.25 links. It was a bit too different to a VAX to be able to easily port standard AI software to it. The GEC 4000 series was what was used for the Nimrod AEW and for other real-time applications as well as for X.25 networking around the UK. [1] https://en.wikipedia.org/wiki/GEC_Series_63 https://en.wikipedia.org/wiki/GEC_Series_63