AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations B9 and A10. There is another near location B4.
SN74LS194AN, 7734K date code. Rounded notch.
Total # on board: 3.
AMD
Parts for my Rev 0 replica.
SN74LS194AN, SN54LS194AJ, 77xx date codes. 3 different NOS package variations.