[sdiy] Synth memory chip questions

[Brock Russell]

>I am looking for a 256Kx1 memory chip (it is out of a Korg DSS-1 sampling,
>but otherwise analog synth).  The number I am looking for is NEC
>D41256V-15.  Thanks to Google, I found a guy with some chips for sale and he
>tells me the number on his chips is:  NEC D41256C-15.  The last letter C
>verses V is the only difference in the number.
>
>Anyone know or care to hazard a guess as to the difference?  Speed?
>Package?

Package. Not guessing because I have a 1986 NEC data book in hand.
D41256V-15 is a 16 pin ZIP.
D41256C-15 is a 16 pin DIP.

Brock