Online Systems

Before we were Living Computers, we began as PDP-Planet and provided access to our mainframes over the web. Even though we've since opened our doors for visitors, we still remain dedicated to providing online access to our systems for the community of users who login across the globe.

Below you will find information on the Computers available over the Internet from the LCM through SSH.

System Status

System Status

15 October 2019: VAX-11/730 (BSD 4.3) unavailable The 730 has been crashing repeatedly for several days. We are taking it offline for now to perform deep level diagnostics. We are looking into providing a emulated system temporarily so that users can continue to use the operating system. All user files will be made available on the emulated system when it is ready. NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE Due to ongoing network-based attacks on all of the on-line systems, we disabled the use of TELNET as the way to log on to the system as of 4 December 2017. Access requires the use of a 2-stage connection via SSH to our firewall using new well-known user addresses. Please connect to the system with the following credential: menu@TTY.livingcomputers.org You may substitute a system name for the word MENU: dec-10 toad-2 vax7000 pdp1170 vax730 lcm3b2 sigma9 vax785 pdp1184 cdc6500 Older items: 19 October 2018: VAX-11/780-5 to be replaced by VAX 7000-640 We will be moving all OpenVMS accounts from the 11/785 to a 7640 beginning on Monday, 22 October 2018. All software licenses will be transferred, so there should be no user visible changes in operation other than the higher speed of the new processor. This should take 2 days, and VMS will be available again by Wednesday. The 11/785 will be retargeted for another operating system, to be announced later. 16 October 2018: CDC 6500 UP! The compressor in the chiller was successfully replaced on Monday, 15 October 2018, and the system is up and running. We apologize for the extended downtime and thank the users for their patience. 28 September 2018: IBM 4361 (VM/SP) down indefinitely The 4361 was down for more than a month with a hardware failure in a channel interface. We eventually replaced the external peripheral emulator's channel emulation card, and were able to bring the system back to life for about 10 days, but it suffered a massive internal power related failure last night and cannot be brought back up. We have no estimate on when the system will return to service at this time. We apologize for the inconvenience. 10 July 2018: DECSYSTEM-2065 down (Tops-10) The diagnosis has come in regarding the 2065: Repairs are necessary on the entire CPU board set. We expect the system to be down for another two weeks. We apologize for the inconvenience. 28 February 2017: CP-V (Sigma 9) accounts Updating the message from last month: We have learned that the system was built on a so-called private disk pack, which is limited to a maximum of 96 distinct accounts. We are working on building a public pack system, which does not have this limitation. We appreciate your continued patience. 14 August 2018: IBM 4361 (VM/SP) down UPDATE: The system crashed on Friday, 10 August, with a channel failure of some kind, reporting that it could not find its disk drives. FSI checked the logs on the FLEXCUB disk emulator, and noted that the system was unable to connect to them. We have run the IBM diagnostics, and are in the process of replacing 2 boards in the channel. We apologize for the ongoing inconvenience. 10 August 2018: IBM 4361 (VM/SP) down The 4361 crashed with a channel problem of some kind today. The support people from FSI are looking at the logs on the FLEX-CUB device emulator to determine what has happened and how we move forward. We apologize for the inconvenience. 10 July 2018: CDC 6500 down The compressor in the chiller for the 6500's coolant fluid has broken down and must be replaced. At this time there is no estimate for a repair and return to service. We apologize for the inconvenience. 5 July 2018: CDC 6500 down The chiller for the 6500's coolant fluid has broken down. At this time there is no estimate for a repair and return to service. We apologize for the inconvenience. 8 June 2018: DECSYSTEM-2065 (Tops-10) Due to unscheduled electrical work on its UPS, the 2065 is down with a serious hardware failure. We have no estimate for how long the repair will take; we apologize for the inconvenience. 28 March 2018: VAX-11/780-5 (VMS 7.3) upgrade We have replaced the disks on the 785 in order to upgrade the disk service to an Emulex SCSI controller connected to an SD card disk emulation. This will provide more stable file service in the future. 4 December 2017 Due to continuing network-based attacks on the TOPS-20 systems, we have disabled the use of TELNET as the way to log on to them, and will require the use of a 2-stage connection via SSH to our firewall using a new well-known user address. After 12:00 NOON on Monday, 4 December 2017, please connect to the public TOPS-20 system with the following credential: toad-2@TTY.livingcomputers.org We apologize for any inconvenience this may cause. 1 December 2017 NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE Due to continuing network-based attacks on the system, we are disabling the use of TELNET as the way to log on to the system, and will require the use of a 2-stage connection via SSH to our firewall using a new well-known user address. After 12:00 NOON on Monday, 4 December 2017, please connect to the system with the following credential: toad-2@TTY.livingcomputers.org We apologize for any inconvenience this may cause. NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ******************************************************************************** 7 June 2017: DECSYSTEM-10 CONNECTION CHANGE! PLEASE READ! For technical reasons, we have had to change the way in which users of the DEC-10 (2065 running Tops-10) connect to the system. It can no longer be reached by TELNETing to DEC-10.LivingComputerMuseum.org Instead, please use SSH to connect to dec-10@tty.LivingComputers.org which will take you to the usual Tops-10 login prompt. ******************************************************************************** 24 March 2017: BSD4.3 (VAX-11/730) The system is down for the weekend. Expect normal operations to resume on Monday. We apologize for the inconvenience. ******************************************************************************** 28 February 2017: Tops-10 (DEC 2065) Yesterday evening the main power supply experienced an age-related issue. Getting at the non-functioning device and orderng a replacement will take several days. Watch here for further news. ******************************************************************************** 13 February 2017: VMS (VAX 785) logins In order to prevent VMS lockouts, Telnet and SSH logins have been turned off. To log in to the VAX, ssh to vax780@TTY.LivingComputerMuseum.org to connect automatically via an internal network at the museum. ******************************************************************************** 27 January 2017: CP-V (Sigma) logins failing Several people who just received new accounts on the Sigma 9 have reported that they are unable to log in with their new credentials. We are investiagting the issue and expect to have an answer shortly. Thank you for your patience. ******************************************************************************** 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 memory. 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 operational status. 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).

How to Use Our Online Systems

  1. Request a Login
    Visit our Login Request page and complete the form. You'll receive an email with instructions and your new login credentials.

    Note: if you don't already have terminal software installed on your computer, you will need to do so at this time. We recommend Putty for PC and Terminal for Mac.
     
  2. Review the User Documentation
    Briefly review the User Documentation for the computer you wish to connect to. You'll find user guides, operating manuals, and more details about working within each unique mainframe.
     
  3. Use Your New Login Credentials
    Open your terminal software program and connect to the Living Computers via SSH. This will connect you across a telnet bridge to the host.

    ssh menu@tty.livingcomputers.org

    When the menu appears, select the computer you'd like to use. You will then be prompted to login with the account you have been granted.

Questions?

Visit the Living Computers Wiki for additional details and deeper dives.

If you need help with something specific, you can email us at info@livingcomputers.org or fill out and submit our contact form.