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From: friedman@uiucdcs.UUCP
Newsgroups: net.jokes
Subject: Re: A (The?) List of Opcodes... (LONG) - (nf)
Message-ID: <9900285@uiucdcs.UUCP>
Date: Mon, 2-Jul-84 15:07:00 EDT
Article-I.D.: uiucdcs.9900285
Posted: Mon Jul  2 15:07:00 1984
Date-Received: Wed, 4-Jul-84 03:23:46 EDT
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Nf-ID: #R:sdcsvax:-92800:uiucdcs:9900285:000:2624
Nf-From: uiucdcs!friedman    Jul  2 14:07:00 1984

#R:sdcsvax:-92800:uiucdcs:9900285:000:2624
uiucdcs!friedman    Jul  2 14:07:00 1984

Well, I have a few that don't seem to be on your list, collected by my
students and myself over a period of time:

BSP 	Backspace Punch
CAC	Cash and Carry
CDC	Clear Disk and Crash
DB	Drop Bits
DCR	Double precision CRash
DSO	Disable System Operator
EBB	Empty Bit Bucket
EBR	Erase Before Reading
EFE	Emulate Fatal Error
IMBP	Insert Mistake and Blame Programmer
IPM	Ignore Programmer's Mistakes
IRBI	Insert Random Bits Indexed
JPA	Jump when Pizza Arrives
MDC	Make Disk Crash
MW	Multiply Work
RAM	Read Ambiguous Memory
RP	Read Printer
SEOB	Set Every Other Bit
SROS	Store in Read Only Storage
SWOS	Store in Write Only Storage
TDRB	Test and Destroy Random Bits
TOAC	Turn Off Air Conditioner
ZEOW	Zero Every Other Word

A few are attributed.  Here are some that won a contest at Johns Hopkins
a few years ago:

1st place:	DPN	Double Precision No-op (Bobby Baum)
2nd place:	EFB	Emulate Five-volt Battery (Rob Frye)
3rd place:	BPL	Branch Please (Thad Beier)
4th place:	ESC	Emulate System Crash (Bobby Baum)

Some honorable mentions:
CWB	Carry With Borrow
ESD	Eject Spinning Disk
PDLD	Power Down and Lock Door (to computer room)
SCD	Shuffle and Cut DEC
UFO	Unidentified Flag Operation (Bobby Baum)

Selected additional entries:
ABC	AlphaBetize Code
BFF	Branch and Form Feed
BYTE	Byte Test
CCC	Crash if Carry Clear
CFP	Change and Forget Password
CON	Call Operator Now
CRN	Compare with Random Number
DMZ	Divide Memory by Zero
DR	Detach Root
FERA	Forms Eject and Run Away
HSC	Halt on System Crash
HSJ	Halt, Skip, and Jump
ISC	Ignore System Crash
JSC	Jump on System Crash
KSR	Keyboard Shift Right
LRA	Load RetroActively
MOG	Make Operator Growl
RAN	Random Opcode [similar to a 16-bit what gate]
RC	Rewind Core
RH0	Randomize and Halt if not equal to 0
RMT	Remove Trap
SCM	Set for Crash Mode
SNARF	System Normalize and Reset Flags
SRTC	Stop Real-Time Clock
SST	Seek and Stretch Tape

And some post-contest additions:
AMS	Add Memory to System
CEX	Call EXterminator
CNS	Call Nonexistent Subroutine
CPN	Call Programmer Names
CSS	Crash Subsidiary Systems
CWG	Chase Wild Goose
DRD	Drop Dead (crashes everything)
DTB	Destructively Test Bit
EAC	Emulate Acoustic Coupler
EDP	Emulate Debugged Program
EHC	Emulate Headless Chicken
EMM	Emulate More Memory
ENO	Emulate No-Op
EPL	Emulate Phone Line
GTJ	Go To Jail (do not pass 00000, do not set flags)
HUP	Hang Up Phone
IMV	IMpress Visitors
JBS	Jump and Blow Stack
JOP	Jump on OPerator
JTT	Jump and Tangle Tape
NPC	Normalize Program Counter
PWS	Create Power Surge
RPC	Rotate Program Counter
SDM	Search and Destroy Memory
SWZN	Skip Whether Zero or Not
TOP	Trap Operator
WAT	WAste Time
WDR	Warp disk DRive