22 Jun
2026
22 Jun
'26
6:35 a.m.
> On Sat, 20 Jun 2026, ben via cctalk wrote:
>> PL/1 and C are the only two high level languages a operating system is written
in, that I can think of that are well documented, and easily found on the WEB.
That clearly is not even close to true. There is ALGOL (or rather its dialect ESPOL) used
by Burroughs. There's CYBIL, used by CDC. There's BLISS, used by DEC. And if
you include embedded RTOS, there's FORTH.
Just a couple I can think of in 30 seconds.
Did anyone use FORTRAN? I do remember IBM wrote the OS/360 FORTRAN (H) compiler in
FORTRAN.
paul