    Network Working Group                              Alexander A. McKenzie
    RFC 434                                            BBN-NET
    NIC 13658                                          January 4, 1973

                        IMP/TIP MEMORY RETROFIT SCHEDULE

       During the first several months of 1973 we will be retrofitting each
       IMP and TIP with additional core memory.  At the end of the retrofit
       program, the memory sizes of the various machines will be as follows:

          IMP (516 or 316) - 16K words

          TIP - 28K words

          TIP with magnetic Tape Option - 32K words

       In addition, the expansion of the TIP core memory will necessitate
       enlarging the TIP to two cabinets.

       Listed below is the preliminary schedule for these retrofits.  We
       have arranged this schedule to coincide with the usual monthly
       Preventive Maintenance at each site so as to minimize user
       inconvenience, but the work required will frequently require the
       machines to be down longer than normal.  I will issue additional
       RFC's updating this schedule as necessary.

       Any site which anticipate difficulty with the expansion of TIP size,
       and thus the floor space requirement, should contact Hawley Rising
       (BBN) at
          (617)491-1850 ext. 473
       All dates given below are in the form (month/day)

       Xerox (1/3)
       SAAC (1/4)
       MIT (1/8)
       MITRE (1/9)
       Harvard (1/15)
       RAND (1/16)
       ARPA (1/16)
       NBS (1/17)
       AMES TIP (1/24)
       Lincoln (1/24)
       Utah (2/1)
       UCSB (2/6)
       Belvoir (2/8)
       NOAA (2/12)
       USC (2/13)

    McKenzie                                                        [Page 1]

    RFC 434            IMP/TIP Memory Retrofit Schedule        January 1973

       Stanford (2/14)
       ETAC (2/15)
       Aberdeen (2/22)
       ISI (2/22)
       Case (2/26)
       SRI (3/7)
       Rome (3/14)
       FNWC (3/15)
       UCLA (3/19)
       CCA (3/20)
       AMES IMP (3/21)
       GWC (3/22)
       Carnegie (4/4)
       SDC (4/17)
       Illinois (4/18)

             [ This RFC was put into machine readable form for entry ]
             [ into the online RFC archives by Alex McKenzie with    ]
             [ support from GTE, formerly BBN Corp.             9/99 ]

    McKenzie                                                        [Page 2]