First post on devRant... Aaaaand it's university hw... I can't wrap my head around this...

So, the problem is: I have to implement writing and printing 64 bit decimal integers (negative and positive with 2s complement) in NASM Assembly. There are no input parameters, and the result should be in EDX:EAX. The use of 64 bit registers is prohibited.

There is a library which I can use: mio.inc
It has these functions:
- mio_writechar (writes the character which corresponds to the ASCII code stored in AL to console)
- mio_readchar (reads an ASCII character from console to AL)

It also has to manage overflow and backspace. An input can be considered valid or invalid only after the user hits Enter... It's actually a lot of work, and it's just the first exercise out of 10... 😭

The problem is actually just the input - printing should be easy, once I have valid data...

Please help me!