Category "low-level"

What is an address/range of addresses that are guaranteed to be not used in x86-64?

I am writing a version of malloc that is compatible with multi-threading. Is is going to use arenas to help facilitate the parallelism. mmap is being used to cr

4 byte checksum, sum32 algorithm for Epson printers

I'm programming a low level communication with an Epson tm-t88iv thermal printer on a Linux device, which receives only hexadecimal packages. I have read the ma