> True... and I bet the performance was significally slower.

Obvious, since those systems pre-dated PDP-11 hardware.

> Also I think the portability in those languages was also limited.

Have you ever coded C before ANSI C was approved?

It was only portable to UNIX itself, just like those other OSes and their systems programming languages.

Each C compiler outside UNIX implemented its own subset and semantics, hence why ANSI C had to adopt so much UB to avoid breaking too much code.

> Obvious, since those systems pre-dated PDP-11 hardware.

Well, I was actually referring to the equivalent running on PDP-11 (like Algol68)

> Have you ever coded C before ANSI C was approved?

>It was only portable to UNIX itself, just like those other OSes and their systems programming languages.

I meant machine portability. Before C, to have a lower level like performance you needed to use machine-specific assembly.

C compilers generated so bad code that games only started using it in home computers instead of Assembly during the mid-90's.

On workstations and mainframes there was hardly any difference to other heigher level system programming languages. In fact C prevented many compiler optimizations due to its aliasing and decay of arrays into pointers.

Amazing how few people remember that Fortran compilers always outperformed C compilers in the "bad old days".