29 May
2009
29 May
'09
3:52 a.m.
On 28 May 2009 at 22:53, William Donzelli wrote:
The D825 systems ("BUIC") were not true SMP,
as one side was just the
backup to the other? Also, D825 an B5500 were around about the same
time?
I'm calling the D825 as being earlier as it was a vacuum-tube box,
while the B5500 was solid-state. In any case, the design was
probably much earlier than the B5500.
The Fact Sheet for the BUIC claims:
"Data exchange occurs simultaneously between any memory and any
computer or input/output module."
That could imply that although SAGE used them as backup, they
weren't necessarily limited in that way.
Anyone know for certain? Could both CPUs be running at once?
--Chuck