Saute onion, mushrooms, ham and garlic in olive oil and white wine. In a large bowl combine oregano, eggs, pepper and Parmesan cheese. Mix Place fettuccine into boiling salted water to cover and cook to desired doneness. This should not require more than 8 or 9 minutes for al dente.
Add sauteed vegetables and meat together with the pasta and mix well. Add tomatoes and parsley as garnishes. Serve hot.