20 Jul
2020
20 Jul
'20
11:24 p.m.
On Mon, Jul 20, 2020 at 7:51 AM Larry McVoy <lm(a)mcvoy.com> wrote:
This isn't quite the same but Victor Yodaiken
wrote a real time kernel
that ran all of Linux as a user process.
The Bell Labs MERT system did almost the same thing: its low-priority
process was a Unix emulator along the lines of MS WSL 1. See <
https://en.wikipedia.org/wiki/Multi-Environment_Real-Time> for basics and
links.
Similarly, the PDP-8's modular real-time system RTS/8 had a symbiotic
relationship with OS/8, the single-user operating system; you programmed
and built instances of RTS/8 under OS/8 and then booted them, but if you
had enough memory, you could include the OS8 [sic] task in the RTS build
and it would run OS/8 as the lowest priority task.
John Cowan http://vrici.lojban.org/~cowan cowan(a)ccil.org
This great college [Trinity], of this ancient university [Cambridge],
has seen some strange sights. It has seen Wordsworth drunk and Porson
sober. And here am I, a better poet than Porson, and a better scholar
than Wordsworth, somewhere betwixt and between. --A.E. Housman