mitra@scbtan.larc.nasa.gov (Mitra Mousumi) (01/12/91)
I need help concerning the following issue: We have a VMIVME-2510B 64-Bit TTL I/O board installed on one of our Sun 3/160 machines running SunOS 4.0.3. Unfortunately we are not having much luck using it - no device driver is provided for the board and if we try to run some of our programs using the "mmap" utility, we keep getting a "Bus error (core dump)". The Sun Device driver manual mentions that "Attempts to access supervisor-only device registers without supervisor privilege might produce a bus error ..". We think the board is set up to support supervisory access and so are confused. Has anyone used such a board and if so could you please help us. We have tried getting help from VME Microsystems (makers of this board) without any success. Mousumi Mitra (mitra@scbtan.larc.nasa.gov).