I haven't done it but here is what the GE Microwave Cooking Guide says...
published in 1979.
Power level is High (10)
Spaghetti or linguine 16oz pkg 13x9x2-in dish 6 to 7 cups water, 1/2 teaspoon salt, 1 tablespoon oil 16 to 19 minutes Rearrange after 10 minutes.
Rotini 16oz pkg 3-qt casserole 6 cups water, 1 teaspoon salt 13 to 16 minutes Stir after 10 minutes. Check rotini after 10 minutes as this cooks faster than other types.
They have other types of pasta, let me know if you are cooking something else and I'll check.
Hope everyone is alright!