This routine is called from ZPOSTM during error termination.
It prints the processor names and the call-bank addresses,
it also optionally marks some banks as ``critical''
to get a full dump of these banks in DZSNAP.
Marking ``critical'' depends on single bits in MODE
:
bit 1 all SV banks in the chain 2 all call banks in the chain 3 all banks pointed to from the links in the current call banks at LQUP and LQDW.