Oromo, an East Cushitic language spoken in Ethiopia and Kenya, also has focus morphemes and special verbal forms associated with subject focus. This was descovered by:

[G.Banti at AGORA.STM.IT]

Andrzejewski, B.W. 1978 The dichotomy between extensive and restrictive

verbal paradgms in Somali and its parallels in Oromo. In P. Fronzaroli ed.
Atti del II Congresso Internazionale di Linguistica
Camito-Semitica:347-354. Florence: Universita' di Fienze.

Other relevant literature:

Owens, J. 1985 A grammar of Harar Oromo. Hamburg: BUske. (Especially pp.
326 ff.)

Baye Yimam (1988) Focus in Oromo. Studies in African Linguistics
19/3:365-384.

Ciao,

Giorgio Banti
IUO - Naples