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 instruc-
tion traps. If arg is zero, the normal instruc-
tion trap handling is done: the process is termi-
nated 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