Another interesting project was making the software of the AADE (Almost All Digital Electronics) L/C meter suitable for a 16F84.
The original software was intended for a 16C622, which had 1Kb of memory more than a 16F84.
First the original software had to be disassembled to found out how it really worked. Next, the entire program had to be made more efficient (because of the available memory space), and modified for the LCD that I intended to use. That all came to a good end and now I have a perfectly working L/C meter.