11/3/71 SYS ILGINS (II) NAME ilgins -- catch illegal instruction trap SYNOPSIS sys ilgins; arg / ilgins = 33.; not in assembler DESCRIPTION ilgins allows a program to catch illegal instruction traps. If arg is zero, the normal instruction trap handling is done: the process is terminated and a core image is produced. If arg is a location within the program, control is passed to arg when the trap occurs. This call is used to implement the floating point simulator, which catches and interprets 11/45 floating point instructions. FILES SEE ALSO fptrap, the floating point package DIAGNOSTICS BUGS OWNER ken, dmr