AbstractIn mid‐1973, the Division of Computing Research, CSIKO, took delivery of a Control Data CVBER76 computer, which acts as the primary processing power of the CSIRO computer network (CSIRONET), replacing the Control Data 3600. The 3600, running under the DAD operating system, has been retained as a ‘front‐end’ to the CYBER76 and continues to support the following functions: An interactive system allowing both editing and CYBER76 job submission Input of job files centrally from 3600 input devices, remotely from CSIRONET devices, or from interactive console users, and output of results similarly A permanent file (document) system, with tape archiving This paper describes the linking of the CYBER76 to the 3600. Software for a CYBER76 PPU has been written and some changes to the 3600 and CYBER76 operating systems have been required.