I've stumbled across LSX, and I have it running on SimH. I'm quite inexperienced with Unix, but it's something I want to learn well, having brushed against it at university in the '80s, and having played with Linux somewhat.

I have some interest in Forth, but I don't like the block system of early forths such as FigForth, and I plan to create a new Forth based on FigForth, but supporting external source files.

Anyway, I've tried compiling Hello World on LSX, and I get "1: External definition syntax" error. Some help would be nice, but more generally, is anyone on this list more than vaguely familiar with LSX, or 6th Edition itself?

void main () {
        printf("Hello World!");
}

It seems that the 7th Edition was the beginning of the standard library in C, and that this is missing in LSX. I'm not sure if printf is an intrinsic function in (6th Edition) C, or if it's from a library.

My questions are a bit random, but looking to converse with others with LSX experience.

Paul