> I looked at the data sheet attached to the parts that Jameco is
> selling. It says 256-row refresh. The Z80 only counts through
> 128 addresses. I think 128-row was std for the 4164 chips.
> Just something to watch out for.
If it is providing the refresh address but only 128 it might still be ok
since you won't be using the cells it doesn't refresh. I think I stuck
a 256k in a machine to replace a failed 64k but that was long enough ago
that I'm not positive.
Checked my stock, only have -20's