[kristopolous]

The space shuttle used both z80 and 8086 until it ended in 2011. The international space station runs on among other chips, 80386SX-20s. IBM/BAE also has a few RADs based on POWER chips.

[monocasa]

Do you have a citation for that?

The Space Shuttle Avionics System top level documentation specifically calls out having "no Z80's, 8086s, 68000's, etc."

https://ntrs.nasa.gov/api/citations/19900015844/downloads/19...

[kristopolous]

Intel claims they did. https://twitter.com/intel/status/497927245672218624?lang=en although what's that word "some" doing in there...

And also, sigh, to demonstrate once again that when I worked in space it was 20 years ago, https://www.nytimes.com/2002/05/12/us/for-parts-nasa-boldly-... (https://web.archive.org/web/20230607141742/https://www.nytim...)

Knowing how 8086 timing and interrupts worked was still important for what I was doing in the early 2000s. I don't pretend to remember any of it these days.