Re: Request a discrete refresh circuit schematic

["Bill Garber" <willy46pa@comcast.net>]

"PZ" <skierpaul@yahoo.com> wrote in message
1158421294.113916.278170@e3g2000cwe.googlegroups.com">news:1158421294.113916.278170@e3g2000cwe.googlegroups.com...
: 72 pin simms would be more difficult since we only have an 8 bit data
: bus and 72 pin simms expect a minimum dbus of 16 bits.  I'm not saying
: you can't do it, there's a couple ways to implement 72 pin simms on an
: 8 bit bus, but it'll require some extra logic over the 30pin simms.
:
: - Paul


Paul,

72 pin simms are 32 bit, DQ0-DQ31.
Although you can use more than 8 bits
on the data buss of the simm, there
isn't an easy method for guarateeing
that you collect back the same data
that you put on it.

Bill Garber
Owner - Garberstreet Enterprizez
Co-owner - GSE-Reactive.com
(610)935-7676 (610)329-8996