From a photo of Rev. 0 board 1070 (A2S1-0800), near locations F12 and H12. There is another near location H2. SN74LS138N, 7711 date code. Rounded package. Total # on board: 3.
Motorola
Parts for my Rev 0 replica. SN74LS138N, 7716 date code, rounded package. NOS.