110880 Multiprocessor RT-11 Version: 5.0 Submitted by: H.T.M. Haenen, University Hospital Operating System: RT-11 V4.0, RT-11 V5.1 - V5.4 Memory Required: Minimum 1.2K Hardware Required: DR-11C/DRV-11 or WB-11/WBV-11 or Qnector. Keywords: Data Communications, Networking Abstract: The software links single RT-11 systems together in order to form a network. Network shapes like star, chain, ring and mixed may be easily realized. The data communication is fast because a low overhead protocol is used combined with fast hardware (several interface implementations exist, including DMA). The single RT-11 systems run a standard, unmodified RT-11 monitor and may be memory-only as they can boot from a remote disk. Remote devices such as disks, lineprinters, and special directory devices like magtape can be used in a fully transparent way and they appear to the user as if they were local. Systems may read/write to each others memory for parallel processing. The software is very modular, small and all is realized within handlers (0.6 KW.), system/foreground jobs (1.5 KW.) and some background utilities for accounting, error reporting and displaying/changing read/write protection of device units. Restrictions: RT-11 V5.1 or later is required to use full features of the program. Program handlers must be built from sources. Probably requires system-programmers level. Media (Service Charge Code): One RX02 Diskette (LA) Format: RT-11, 600' Magnetic Tape (MA) Format: RT-11