If I sold a principle residence owned 50/50 (not w/ spouse) do I enter the full amount of the sale price as the proceed of disposition & only half the ACB or full amount?

For both "adjusted cost base cost" and total "proceeds of disposition" you would have to put in half the total for each partner.

Turbo Tax IS NOT ALLOWING ME to answer "my portion" of the Adjusted Cost Base NOR proceeds of disposition.   Is there a glich in TT's program ???