4 May 2016: CP-V (Sigma) down
Our apologies for the late notice.
Memory has been flaky for some time, and we have been running with half of the
memory turned off. Recently, some new jobs failed because of insufficient
memory, so we are working to fix it. The system will be down sporadically for
extended (overnight) periods for the next two weeks.
25 January 2016: CP-V (Sigma 9) running again
The apparent memory fault was more complex than we expected. The actual source
of the failure was a blown component on a circuit card used (in the original
configuration) to connect a Sigma 6 to the same memory as the Sigma 9. This
component was holding a signal down so that nothing else could access the
Thank you all for your patience while we diagnosed this problem.
15 December 2015: CP-V (Sigma 9) down
The Sigma 9 hung today with what appears to be a memory fault, although there
is also a possibility that it is a CPU failure. We are working to converge on
the cause and to get the system running again as quickly as possible. We ask
for your patience.
1 October 2015: Tops-10 (2065) system up
On 20 August 2015, the serial line card in the front end processor of the 2065
died. We eventually found a replacement card, but in the mean time the memory
interface in the CPU developed a problem. We have now replaced the failing
card in the CPU, and the system is back up for timesharing.
30 July 2015: Accounts on Sigma 9 and PDP-11/70 now open
23 July 2015: Sigma 9 CP-V, PDP-11/70 Unix v7
Requests for accounts are currently being accepted. There may be some delay
in setting them up. We ask for your patience as these new systems move to
25 June 2015: 2065 Tops-10 7.04
All user accounts have been moved onto a larger disk (RP07 instead of RP06),
directories on the old MDE drives MONE:, MTWO:, MTRE:, and MFOR: have been
moved to DSKM: (RP07), and directories on the old RP06 MDE disks DSKK:, DSKL:,
DSKM:, and DSKO: have been moved onto DSKO: (RP07).