I was asked to work on some old (very late eighties) Modula 2 programs last year...
That was a clean language, quite performant and 32-bit capable with DOS-extenders
and in OS/2. And already multitasking in DOS as part of the language.
Much easier to to grok again than C code of that area... Modula-2 never quite caught on the United States the way it did in Europe. I remember that Stoney Book and Jensen (I think it was JP-something) had some great compilers in the late 80's and early 90's, but they never achieved the same popularity over here. (Too bad, because I liked them).
Kevin