[Question] Could it be done with ATMega328?

[issalig]

First of all, congratulations for the project and for the explanation, I have also the idea to build one expansion ROM / serial card with Arduino or even ESP32 and your project will help for sure.

I was wondering if it could be done with and Arduino UNO (ATmega328) since it has enough GPIOs and speed is the same.
Maybe moving data pins to ATMega328 PortD (D0..D7) , address pins to PortB and the rest to Port C.
Serial output could be done with Software Serial on D12-D13 (Port B)

What do you think?