- What difference would there be between the pronunciation of "faire" in 1380s French and contemporary French?
- What would be the pronunciation of "faire" in the Anglo-Norman of the 1380s?
At the time, "to speak French" was translated as "parler le François" that became "parler le Français".
It seems that what was written (and pronounced) "oi" became "ai", as according to this book on Middle Ages dialects: "je fois" stand for "je fais".
The other variations are quite similar to contemporary French though. From what I understand the pronunciations would not differ.