ok yes it was used for a imulator of some kind (no idea what )
if they are RCAs then they are very small ones coz they are not norm RCAs
the writing on the chip is
"AM95c60-16GC
/30 001LYEN
(c)1987 AMD"
the writing at the top of that is
"ARCHITECT-256
from
the resolution series"
it also has "(c) charscreen LTD 1991"
EDIT the chips at the top
"D42274V-10
9229FUO29
NEC JAPAN" and there is 16 each side the chip so 32 all to gether