You should ask around.
Assembly language itself is not hard. At least not on those smaller 8 bit Moto chips.
What needs to happen is your father's notes, hopefully code comments, math, etc. and how that maps to the problem space needs to be recorded.
Others can write the code. Frankly, you can likely do that given a little time.
8 bit assembly is both fun and a niche skill. Tons of people write it for fun these days, myself included.
There is probably someone near you who knows this stuff from the retro computing scene.
You should ask around.
Assembly language itself is not hard. At least not on those smaller 8 bit Moto chips.
What needs to happen is your father's notes, hopefully code comments, math, etc. and how that maps to the problem space needs to be recorded.
Others can write the code. Frankly, you can likely do that given a little time.
8 bit assembly is both fun and a niche skill. Tons of people write it for fun these days, myself included.
There is probably someone near you who knows this stuff from the retro computing scene.