Entries in your $ASIPROC.PROC should have a format of: CPU=FFssssssmmmm,IPL=iplproc,JCL=jclproc
ssssss is a "virtual CPUID" (from 'CP SET CPUID ssssss' or from directory) and mmmm is a model number. If your virtual CPUID is not found in the list of CPU statements in $ASIPROC.PROC, the default IPL and JCL procs are used.
