DC Divide and Conquer
DMPK Destroy Memory Protect Key
DO Divide and Overflow
EMPC Emulate Pocket Calculator
EPI Execute Programmer Immediately
EROS Erase Read Only Storage
EXCE Execute Customer Engineer
HCF Halt and Catch Fire
IBP Insert Bug and Proceed
INSQSW Insert into queue somewhere (for FINO queues [First in never out])
PBC Print and Break Chain
PDSK Punch Disk
