<> grabbed the boards hoping that these chips were pin-compatible with th <> old 2102L or RCA1822 or MOS 6550 256x4 SRAMs. < <Alas not. Not even the same type or capacity :-( I do have a bunch of: 2101 256x4 22 pin static nmos 5101 256x4 22pin static cmos 2111 256x4 2112 256x4 6508 1kx1 cmos static 2102 1kx1 16pin static 2114 1kx4 20 pin 6514 1kx4 20 pin 4060 4kx1 22pin dynamic upd411 4kx1 semistatic 85ns 22pin 4104 4kx1 static d414 4kx1 dynamic ras/ cas/ 16pin 2167 16kx1 70ns 18 pin 4116 16kx1 16 pin dynamic And a few other oddballs. You never know when you need a ram... ;) Allison