3/80 memory strangeness..

[Dick Mead]

Looking for ideas on a strange problem encountered while trying to upgrade
a 3/80's memory.  An attempt was made to upgrade from 8 meg to 12 meg, but
with the 12 meg installed, the system never booted, in fact, the startup
screen never appeared, though the front panel led did blink, however, when
an additional 4 meg was added, making 16 meg, all worked fine. This was
still using the 4 meg for the first upgrade. Everything worked fine with
16 meg, so all memory and sockets would appear to be okay. Any clues? Is
this a bug or a feature?

	Dick Mead  <mead at hamal.usc.edu>