Most people associate the Commodore 64 with Commodore BASIC and precompiled applications, but it also had a number of alternative development environments produced for it. One of these was Super Pascal 64 by Abacus. A solid introduction to this software package is provided in a video tutorial by [My Developer Thoughts] on YouTube. This uses the Abacus Super Pascal 64 software and manual from the [Lyon Labs] website, which incidentally has a lot more development environments and operating systems for the C64 listed for your perusal.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/02/14/developing-in-pascal-on-the-commodore-64-with-abacus-super-pascal-64/