I have an old book;
"The PASCAL Handbook" by Jacques Tiberghien Sybex, 1981.
It covers the pascal language on DEC, CDC, Apple, HP, and USCD platforms.
It is remarkable how little the base language has changed.
Similarly, the drawing algorithms of Bresenham from the 1960s are still the standard.
I've been confused enough by turbo and iso stuff. I'm thinning this framebuffer drawing interface to old and simple.