At one point in the 80’s/90’s several of the standard VMS command line tools were PL/1. I’m thinking in particular of the Error Log Formatter (ANALYZE/ERROR) but I recall some other ANALYZE/ sources being PL/1 as well.
I seem to recall DUMP and maybe some tape utilities were in Pascal. The talk at DECUS was that Digital purposefully made sure every language was represented in VMS sources! In the 2000s I recall a lot of the PL/1 and BLISS system sources had been converted to C. I’m guessing the conversion had to be done because not enough staff knew PL/1 or BLISS anymore. Tim > On Jan 29, 2018, at 4:24 AM, Jordi Guillaumes Pons > <j...@jordi.guillaumes.name> wrote: > > > Jordi Guillaumes i Pons > j...@jordi.guillaumes.name > HECnet: BITXOW::JGUILLAUMES > > >> >> IIRC, DECC added #pragma linkage for that. But that only matters in kernel >> code - any user mode JSB linkage in the VAX calling standard has a >> corresponding CALL linkage. > > > Just as side info… > > IBM added a different C compiler to zOS (MVS) to do systems stuff. They call > it “Metal-C” and comes with a different RTL and assorted header files to > invoke the MVS macros and address its control blocks. > > I don’t know anyone who uses it. We toke a look into it and went back to > using assembler to interface with the system. > > IBM itself still uses PL/X as systems implementation language., which as far > as I know has not been made available to the public until relatively recent > times. As the name hints at, it’s a PL/I derivative tailored for systems and > low level stuff (although the “regular” PL/I can do it without too much > changes). > > > Jordi Guillaumes i Pons > j...@jordi.guillaumes.name > HECnet: BITXOW::JGUILLAUMES > _______________________________________________ > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh
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