16K x 1 bit DRAM

Spec Sheet
uPD416_RAM_C_D

NEC

From a photo of Rev. 0 board 1070 (A2S1-0800), in rows C and D. 
µPD416D, 736 date code.
Total # on board: 16.

TMS4116_RAM_E

Texas Instruments

From another photo of Rev. 0 board 1070 (A2S1-0800), in row E. 
TMS4116-15JL, P7845 date code.
Total # on board: 8.