Hi!
Recently my Naomi base began to show gfx glitches and slow dows, so I did a test ram:

IC20 is Bad, I check de IC20 in board:

The ram chip is "NEC D4516161AG5 A80R 9NF"
I have searched to replace this ram, but only found " NEC D4516161AG5 A10 9NF"
Is this chip compatible? There is another type of chip compatible?

Thanks!