chcu275@ut-emx.UUCP (chcu275) (02/23/88)
I am using SCO XENIX 2.1 to read and write data on an IEEE-488 GPIB interface. The XENIX op. sys. runs on an AT which serves as a supervisor to a XT slave. The reads are set up to occur at a specific time interval. The writes occur at a specific time interval but also can occur at arbitrary times. What is the best way to synchronize this GPIB activity? Should I use "waitsm" with shared memory to delay action until the current read or write leaves the shared memory? ( I think this is similar to semaphores on Sys 3 which are not supported on Sys V. according to my manuals. ) I would appreciate any advice on this matter. Also, are there any good references for process control on UNIX/XENIX systems that provide more info. than the SCO or UNIX Sys.V manuals. Thanks in advance for any suggestions provided. Noel Bell Department of Chemical Engineering Univ. of Texas at Austin