If somebody could send full BOM list for this expansion RAM.
I see the RAM chips 514256 4-bit x 256K by Vitelic.
>2 x capacitors on board
>8 x little capacitors
>4 x SIL8/ RESISTOR ARRAYS
and connector , of course.
Board is without clock module for Amiga 500 /512Kb
This version fitted for A500+ 1 MB RAM Expansion.
This expansion board is probably manufactured by AlfaData.

