Yes, firmware running on bare metal requires good resource management. My current development board processor contains 512KB SRAM. That’s equivalent to half of the size of an average PDF.

What a nostalgia trip. I love it. I owned and used 3310 for several years back in early 2000s.

How did you end up drawing all of these? Do they serve a purpose or was it just an artistic pursuit?

OP has already provided details in the post description.

Shared this with my team just recently. Guess there is a lot more of these brilliant edits.