Assembler OpCodes that Ought to Exists
EOU = End Of User
 AAC Alter All Commands
 AAD Alter All Data
 AAO Add And Overflow
 AAR Alter At Random
 AB Add Backwards
 ABC AlphaBetize Code
 ABR Add Beyond Range
 ACC Advance CPU Clock
 ACDC Allow Controller to Delete Contents
 ACDP Allow Controller to Die Peacefully
 ACM Automatically Clear Memory
 ACQT Advance Clock to Quitting Time
 ADB Another Damn Bug
 ADDN ADD Nauseum
 AEE Absolve Engineering Errors
 AFF Add Fudge Factor
 AFHB Align Fullword on Halfword Boundary
 AFP Abnormal[ize] Floating Point
 AFR Abort Funny Routine
 AFVC Add Finagle's Variable Constant
 AGB Add GarBage
 AGWA Add and Get Wrong Answer
 AI Add Improper
 AIB Attack Innocent Bystander
 AIB Attack Innocent Bystanders
 AISG Access and Improve Student Grade
 AMM Add Mayo and Mustard
 AMM Answer My Mail
 AMS Add Memory to System
 ANC ANnoy Consultant
 ANFSCD And Now For Something Completely Different
 AOI Annoy Operator Immediate
 AR Advance Rudely
 AR Alter Reality
 ARN Add and Reset to Nonzero
 ARNZ Add and Reset to NonZero
 ARZ Add and Reset to Zero
 AS Add Sideways
 ASQGSA ASCII Stupid Question, Get a Stupid ANSI
 AT Accumulate Trivia
 AWP Argue With Programmer
 AWTT Assemble With Tinker Toys
 AZ Address by Zipcode
 BA Branch Anywhere
 BAC Branch to Alpha Centauri
 BAD Branch And Die
 BAD Branch to Auto Destruct
 BAF Blow All Fuses
 BAFL Branch And FLush
 BAH Branch And Hang
 BALC Branch And Link Cheeseburger
 BAP Branch And Punt
 BAW Bells And Whistles
 BB Branch on Bug
 BBBB Byte Baudy Bit and Branch
 BBBF Branch on Bit Bucket Full
 BBC Branch Before Compare
 BBD Branch on Bastille Day
 BBI Branch on Blinking Indicator
 BBI Branch on Burned-out Indicator
 BBIL Branch on Burned-out Indicator Light
 BBLB Branch on Blinking Light Bulb
 BBOI Branch on Burned-Out Indicator
 BBR Bug on BRanch
 BBT Branch on Binary Tree
 BBW Branch Both Ways
 BC Bypass Core
 BCB Burp and Clear Bytes
 BCBF Branch on Chip Box Full
 BCF Branch and Catch Fire
 BCF Branch on Chip box Full
 BCG Branch on CE Ground
 BCIL Branch Creating Infinite Loop
 BCR Backspace Card Reader
 BCS Branch and Crash System
 BCU Be Cruel and Unusual
 BD Backspace Disk
 BD Beat on Drum
 BD Branch to Data
 BDB Branch on Donner or Blitzen
 BDC Break Down and Cry
 BDI Branch to Data Indirect
 BDM Branch and Disconnect Memory
 BDS Branch to Data Segment
 BDT Burn Data Tree
 BDU Branch on Dense User
 BE Branch Everywhere
 BEC Bypass Error Check
 BEO Branch and Execute Operator
 BEW Branch Either Way
 BF Belch Fire
 BF Blow Fuse
 BF Branch Forever
 BFD Branch on Full Disk
 BFF Branch and Form Feed
 BFM Be Fruitful and Multiply
 BH Branch and Hang
 BIM Branch on Index Missing
 BIMBO Branch If Multi-Byte Overflow
 BIR Branch Inside Ranch
 BIR Branch and Invert Record
 BIRM Branch on Index Register Missing
 BLC Branch and Loop Continuous
 BLI Branch and Loop Infinite
 BLM Branch, Like, Maybe
 BLMWM Branch, Like, Maybe, Wow, Man
 BLP Boot from Line Printer
 BLR Branch and Lose Return
 BLSH Buy Low, Sell High
 BLT Break Little Thing
 BM Branch Maybe
 BMF Blow Main Fuse
 BMI Blow up Memory Immediate
 BMI Branch on Missing Index
 BMI Branch to Muncee Immediate
 BMP Branch and Make Popcorn
 BMR Branch [on] Multiple Registers
 BMUS Beam Me Up, Scotty
 BNA Branch to Nonexistant Address
 BNCB Branch and Never Come Back
 BNL Become a Neo-Luddite
 BNR Branch for No Reason
 BO Byte Operator
 BOB Branch On Bug
 BOD Beat On Disk
 BOD Beat On Drum
 BOD Branch on Operator Desperate
 BODTH Beat On Drum, then Toot Horn
 BOH Branch On Humidity
 BOH Branch on Operator High
 BOHP Bribe Operator for Higher Priority
 BOI Byte Operator Immediately
 BOP Boot OPerator
 BOPL Burn Out Pilot Lights
 BOS Branch on Operator Sleepy
 BOT Branch On Tree
 BPB Branch on Program Bug
 BPC Branch to Program Counter
 BPD Branch if Programmer Debugging
 BPDI Be Polite and Don't Interrupt
 BPIM Bury Programmer In Manuals
 BPL Branch PLease
 BPM Become a Psych Major
 BPM Branch on Phase of Moon
 BPO Branch on Power Off
 BPO Branch on Power On
 BPP Branch and Pull the Plug
 BR Byte and Run
 BRA Branch to Random Address
 BRB BRanch on Beaver
 BRH BRanch and Hang
 BRI BRanch Indefinitely
 BRL BRanch and Leak
 BRO BRanch and Overheat
 BRO BRanch to Oblivion
 BS Behave Strangely
 BSC Branch on Second Coming
 BSC Burst Selector Channel
 BSD BackSpace Disk
 BSI Back up Sewer Immediate
 BSI Backup Sewer Immediately
 BSM Branch and Scramble Memory
 BSO Branch on Sleepy Operator
 BSP BackSpace Punch
 BSR Branch and Stomp Registers
 BSS Branch on SunSpot
 BSST BackSpace and Stretch Tape
 BST Backspace and Stretch Tape
 BTD Branch on Time of Day
 BTD Byte The Dust
 BTI Blow Trumpet Immediately
 BTJ Branch and Turn Japanese
 BTO Branch To Oblivion
 BTR Break Tape and Reverse
 BTW Branch on Third Wednesday
 BU Branch Unexpectedly
 BUTI Blow Up Terminal Immediately
 BVS Branch and Veer South
 BW Branch on Whim
 BWABL Bells, Whistles, And Blinking Lights
 BWC Branch When Convenient
 BWF Busy, Wait Forever
 BWOP BeWilder OPerator
 BYDS Beware Your Dark Side
 CAC Calling All Cars
 CAC Cash And Carry
 CAF Convert ASCII to Farsii
 CAI Corrupt Accounting Information
 CAIL Crash After I Leave
 CAR Cancel Accounts Receivable
 CAT Confused And Tired
 CB Consult Bozo
 CB Crash and Burn
 CBA Compare and Branch Anyway
 CBBR Crash and Blow Boot Read-only memory
 CBNC Close, But No Cigar
 CBS Clobber BootStrap
 CBS Crash Bothersome Source code
 CC Call Calvery
 CC Change Channels
 CC Compliment Core
 CCB Chocolate Chip Byte-mode
 CCB Consult Crystal Ball
 CCC Crash if Carry Clear
 CCCC Cash Cheque and Check Cache
 CCCP Conditionally Corrupt Current Process
 CCD Choke Cough and Die
 CCD Clear Core and Dump
 CCR Change Channels at Random
 CCS Chinese Character Set
 CCWR Change Color of Write Ring
 CD Complement Disk
 CD Concoct Data
 CDC Clear Disk and Crash
 CDC Close Disk Cover
 CDI Crash Disk Immediate
 CDIOOAZ Calm Down, It's Only Ones And Zeroes
 CDS Change Disk Speed
 CDS Condense and Destroy System
 CEMU Close Eyes and Monkey with User space
 CEX Call EXterminator
 CF Come From [replaces goto]
 CFE Call Field Engineer
 CFM ConFuse Memory
 CFP Change and Forget Password
 CFS Corrupt File Structure
 CG Convert to Garbage
 CH Create Havoc
 CHCJ Compare Haig to Christine Jorgensen
 CHPAMR CHase Pointers Around Machine Room
 CHSE Compare Half-words and Swap if Equal
 CIB Change Important Byte
 CIC Cash In Chips
 CID Compare and Ignore Data
 CIMM Create Imaginary Memory Map
 CIZ Clear If Zero
 CLBR CLoBber Register
 CLBRI CLoBber Register Immediate[ly]
 CM Circulate Memory
 CMB Create Machine Bug
 CMD CPU Melt Down
 CMD Compare Meaningless Data
 CMFRM CoMe FRoM [essential for truly structured programming]
 CMI Clobber Monitor Immediate
 CML Compute Meaning of Life
 CMP Create Memory Prosthesis
 CMS Click MicroSwitch
 CN Compare Nonsensically
 CNB Cause Nervous Breakdown
 CNS Call Nonexistent Subroutine
 CO Confuse Operator
 COCS Copy Object Code to Source
 COD Crash On Demand
 COLB Crash for Operator's Lunch Break
 COM Clear Operator's Mind
 CON Call Operator Now
 COS Copy Object code to Source file
 COWYHU Come Out With Your Hands Up
 CP Compliment Programmer
 CPUFKM CPU FlaKeout Mode
 CPUWM CPU Weird Mode
 CPAR Crumple Paper And Rip
 CPB Create Program Bug
 CPN Call Programmer Names
 CPPR Crumple Printer Paper and Rip
 CR Clobber Register
 CRASH Continue Running After Stop or Halt
 CRB CRash and Burn
 CRD Confirm Rumor by Denial
 CRE Create Random Error
 CRM CReate Memory
 CRM Clear Random Memory
 CRN Compare with Random Number
 CRN Convert to Roman Numerals
 CRR Convert to Roman numerals
 CRYPT reCuRsive encrYPt Tape
 CS Crash System
 CSL Curse and Swear Loudly
 CSN Call Supervisor Names
 CSNIO Crash System on Next I/O
 CSS Crash Subsidiary Systems
 CSU Call Self Unconditional
 CTDMR Change Tape Density, Mid Record
 CTT Call Time and Temperature
 CU Convert to Unary
 CUC Cheat Until Caught
 CUME Cover-Up Machine Errors
 CUN Cancel all User Numbers
 CVFL ConVert Floating to Logical
 CVFP ConVert Fortran to Pascal
 CVG ConVert to Garbage
 CVU ConVert to Unary
 CWAH Create Woman And Hold
 CWB Carry With Borrow
 CWDC Cut Wires and Drop Core
 CWG Chase Wild Goose
 CWGK Compare Watt to Genghis Khan
 CWIT Compare Watt to Ivan the Terrible
 CWM Compare Watt to Mussolini
 CWOM Complement Write-Only Memory
 CZZC Convert Zone to ZIP Code
 DA Develop Amnesia
 DAB Delete All Bugs
 DAC Divide And Conquer
 DAD Destroy A-Disk
 DAMIT transfer control to perdition
 DAO Divide And Overflow
 DAP De-select Active Peripheral
 DAUF Delete All Useless Files
 DB Drop Bits
 DBL Desegregate Bus Lines
 DBP Drop Back 15 yards and Punt
 DBR DeBase Register
 DBTP Drop Back Ten and Punt
 DBZ Divide By Zero
 DC Degauss Core
 DC Divide and Conquer
 DCAD Dump Core And Die
 DCC Dump Core to Chad box
 DCD Drop Cards Double
 DCGC Dump Confusing Garbage to Console
 DCI Disk Crash Immediate
 DCON Disable CONsle
 DCOR Delete CORe
 DCR Double-precision CRash
 DCT Drop Cards Triple
 DCWPDGD Drink Coffee, Write Program, Debug, Get Drunk
 DD Destroy Disk
 DD Drop Disk
 DDC Dally During Calculations
 DDOA Drop Dead On Answer
 DDS Delaminate Disk Surface
 DDT Debug Program
 DDWB Deposit Directly in Waste Basket
 DEB Disk Eject Both
 DEC Decompile Executable Code
 DEI Disk Eject Immediate
 DEM Disk Eject Memory
 DFA Disable FAns
 DGO Decrement the Grades of Others
 DGT Dispense Gin and Tonic
 DHTPL Disk Head Three Point Landing
 DIA Develop Ineffective Address
 DIC DisIntegrate Circuits
 DIC Drop Into Check
 DICE Delete Invalid Customer Engineer
 DIE DIsable Everything
 DIF DIsable Fuses
 DIG DIsable Gravity
 DIGO Data In, Garbage Out
 DIH Disable Interrupts and Hang
 DIIL Disable Interrupts and enter Infinite Loop
 DIRFO Do It Right For Once
 DIVZDX DIVide by Zero and Disregard eXception
 DK Destroy Klingons
 DKWMM DisK unit Washing Machine Mode
 DKP Disavow Knowledge of Programmer
 DLN Don't Look Now
 DLP Drain Literal Pool
 DM Destroy Memory
 DMNS Do what i Mean, Not what i Say
 DMP Destroy Memory Protect key
 DMPE Decide to Major in Phys. Ed.
 DMPK Destroy Memory Protect Key
 DMPK Disable Memory Protect Key
 DMV Double Mains Voltage
 DMZ Divide Memory by Zero
 DND Destroy Neighbor's Data
 DNPG Do Not Pass Go
 DO Divide and Overflow
 DO Divide and Overflow [IBM PC]
 DOC Drive Operator Crazy
 DOV Divide and OVerflow
 DP Destroy Peripherals
 DPC Decrement Program Counter
 DPCS Decrement Program Counter Secretly
 DPK Destroy storage Protect Key
 DPMI Declare Programmer Mentally Incompetent
 DPN Double Precision No-op
 DPR Destroy PRogram
 DPS Disable Power Supply
 DR Detach Root
 DRAF DRAw Flowchart
 DRAM Decrement RAM
 DRBA Deposit Round-off in my Bank Account
 DRD DRop Dead
 DRI Disable Random Interrupt
 DROM Destroy ROM
 DRT Disconnect Random Terminal
 DS Deadlock System
 DSD Dismount System Disk
 DSI Do Something Interesting
 DSO Disable System Operator
 DSP Degrade System Performance
 DSR Delete SubRoutine
 DSR Detonate Status Register
 DSTD Do Something Totally Different
 DSUIT Do Something Utterly, Indescribably Terrible
 DTFFP DecTape unload and Flappa FlaP
 DTSHO DecTape Spin Hubs Opposite
 DTB Destructively Test Bit
 DTBCD Destory Tapes B, C, and D
 DTC Destroy This Command
 DTE Decrement Telephone Extension
 DTI Do The Impossible
 DTRT Do The Right Thing
 DTVFL Destroy Third Variable From Left
 DU Dump User
 DUD Do Until Dead
 DW Destroy World
 DWIM Do What I Mean
 DWIMNWIS Do What I Mean, Not What I Say
 DWIT Do What I'm Thinking
 DWIW Do What I Want
 EA Enable Anything
 EAC Emulate Acoustic Coupler
 EAL Enable AC to Logic rack
 EAO Enable AC to Operator
 EBB Edit and Blank Buffer
 EBB Empty Bit Bucket
 EBR Erase Before Reading
 EBRS Emit Burnt Resistor Smell
 EC Eat Card
 ECB Eject Chad Box
 ECF Explode and Catch Fire
 ECL Early Care Lace
 ECO Electrocute Computer Operator
 ECP Erase Card Punch
 ED Eject Disk
 ED Execute Data
 EDD Eat Disk and Die
 EDIT Erase Data and Increment Time
 EDMB Electrocute DP Manager and Branch
 EDP Emulate Debugged Program
 EDR Emit Deadly Radiation
 EDR Execute Destructive Read
 EDS Execute Data Segment
 EEG Erase Eighteen minute Gap
 EEOIFNO Execute Every Other Instruction From Now On
 EEP Erase Entire Program
 EFB Emulate Five-volt Battery
 EFD Eject Floppy Disk
 EFD Emulate Frisbee using Disk pack
 EFE Emulate Fatal Error
 EHC Emulate Headless Chicken
 EIA Elvis Is Alive
 EIAO Execute In Any Order
 EIEIO Evaluate, Increment, Excrement, Invert, Output
 EIO Erase I/O page
 EIO Execute Invalid Opcode
 EIOC Execute Invalid OpCode
 EIS Encrypt Instruction Set
 EJD EJect Disk
 EJDV EJect Disk with initial velocity V
 ELP Enter Loop Permanently
 EM EMulate 407
 EM Evacuate Memory
 EMCP Eject Math Co-Processor
 EMIF Erase Most Important File
 EMM Emulate More Memory
 EMPC EMulate Pocket Calculator
 EMSE Edit and Mark Something Else
 EMSL Entire Memory Shift Left
 EMT Electrocute Maintenance Technician
 EMW Emulate Maytag Washer
 ENA ENable Anything
 END Erase Neighbor's Data
 ENE ENable Everything
 ENF Emit Noxious Fumes
 ENG ENable Gravity
 ENO Emulate No-Op
 EO Electrocute Operator
 EO Execute Operator
 EOB Execute Operator and Branch
 EOI Explode On Interrupt
 EOS Erase Operating System
 EP Execute Programmer
 EPD Explode Peripheral Device
 EPI Execute Programmer Immediate[ly]
 EPITS Execute Previous Instruction Then Skip
 EPL Emulate Phone Line
 EPMA Erase Protected Memory Areas
 EPP Eject Printer Paper
 EPP Execute Political Prisoner
 EPS Electrostatic Print and Smear
 EPS Execute Program Sideways
 EPSW Execute Program Status Word
 EPT Erase Process Table
 EPT Erase Punched Tape
 EPW Erase Print Wheel
 ERD Eject Removable Disk
 ERIC Eject Random Integrated Circuit
 ERM Erase Reserved Memory
 EROM Erase Read-Only Memory
 EROS Erase Read-Only Storage
 EROS Erase Read-Only Storage [Everex int]
 ERS Erase Read-only Storage
 ESB Eject Selectric Ball
 ESC Emulate System Crash
 ESD Eat Shit and Die
 ESD Eject Spinning Dish
 ESL Exceed Speed of Light
 ESNPR Emergency Stop - No Possible Restart
 ESP Enable SPrinkler system
 ESP Execute Systems Programmer
 ETC EaT Card
 ETI Execute This Instruction
 ETM Emulate Trinary Machine
 ETPH E. T. Phone Home
 EVC Execute Verbal Commands
 EWD Enter Warp Drive
 EWM Enter Whimsy Mode
 EXB EXcrement and Branch
 EXCE EXecute Customer Engineer
 EXE EXecute Engineer
 EXI EXecute Invalid operation
 EXO EXecute Operator
 EXOI EXecute Operator Immediately
 EXOP EXecute OPerator
 EXP EXecute Programmer
 EXPP EXecute Political Prisoner
 FAY Fetch Amulet of Yendor
 FB Find Bugs
 FC Fry Console
 FCJ Feed Card and Jam
 FCJ Feed Cards and Jam
 FD Forget Data
 FDR Feed Disk Randomly
 FERA Forms Eject and Run Away
 FFF Form Feed Forever
 FLD FLing Disk
 FLI Flash Lights Impressively
 FM Forget Memory
 FMP Finish My Program
 FOAD Find Other Accumulator and Destroy
 FOPC False Out-of-Paper Condition
 FPC Feed Paper Continuously
 FPT Fire Photon Torpedoes
 FRG Fill with Random Garbage
 FRS Fetch Ring of Sauron
 FS Feign Sleep
 FSM Fold, Spindle, and Mutilate
 FSR Form Skip and Runaway
 FSRA Forms Skip and Run Away
 FUBAR Foul Up Buffers And Retry
 FYBR Follow Yellow Brick Road
 GAP Grade All Projects
 GBB Go to Back of Bus
 GCAR Get Correct Answer Regardless
 GCR Generate Confusing Results
 GDP Grin Defiantly at Programmer
 GDR Grab Degree and Run
 GENT GENerate Thesis
 GE {JO} Go to the End of the World {Jump Off}
 GFD Go Forth and Divide
 GFM Go Forth and Multiply
 GIDO Garbage In, Data Out
 GIE Generate Irreversible Error
 GL Get Lost
 GLC Generate Lewd Comment
 GMC Generate Machine Check
 GMCB Generate Machine Check and Bounce
 GMCC Generate Machine Check and Cash
 GND Guess at Next Digit
 GORS GO Real Slow
 GPCR Generate Petty Cache Request
 GPE Generate Parity Error
 GR Get Real
 GREM Generate Random Error Message
 GREP Global Ruin, Expiration, and Purgation
 GRMC Generate Rubber Machine Check
 GS Get Strange
 GSB Gulp and Store Bytes
 GSI Generate Spurious Interrupts
 GSU Geometric Shift Up
 GTJ Go To Jail
 HAC Hold All Calls
 HACF Halt And Catch Fire
 HAH Halt And Hang
 HBW Hang Bus and Wait
 HCF Halt and Catch Fire [IBM 360/63 did this at CIT once]
 HCP Hide Central Processor
 HCRS Hang in CRitical Section
 HDH Hi Dee Ho
 HDO Halt and Disable Operator
 HDRW Halt and Display Random Word
 HELP Hinder Everyone with Little Productivity
 HELP Type 'No Help Available'
 HEO Halt and Execute Operator
 HF Hide File
 HFLAB Halt if Flashing Lights on Address Bus
 HGD Halt, Get Drunk
 HHB Halt and Hang Bus
 HIS Halt in Imposible State
 HOO Hide Operator's Output
 HRPR Hang up and Ruin Printer Ribbon
 HS Hide and Seek
 HSC Halt on System Crash
 HSJ Halt, Skip and Jump
 HTC Halt and Toss Cookies
 HTS Halt and Throw Sparks
 HUAL Halt Until After Lunch
 HUP Hang Up Phone
 HWP Halt Without Provocation
 IA Illogical And
 IAE Ignore All Exceptions
 IAI Inquire And Ignore
 IAND Illogical AND
 IAR Ignore All Requests
 IB Insert Bug
 IBM Illegal Bit Maneuver
 IBM Increment and Branch to Muncee
 IBP Insert Bug and Proceed
 IBR Insert Bugs at Random
 IC Interlock Core
 ICB Interrupt, Crash and Burn
 ICM Immerse Central Memory
 ICMD Initiate Core Melt Down
 ICR Incur Costly Repair [Sun Tempest]
 ICSP Invert Crt Screen Picture
 IDA Invert Digital Array
 IDC Initiate Destruct Command
 IDI Invoke Divine Intervention
 IDNOP InDirect No-OP
 IDPS Ignore Disk Protect Switch
 IECP Introduce Error in Chess Program
 IEOF Ignore End Of File
 IF Invoke Force
 IFOR Initialize Fake-Out Routine
 IGI Increment Grade Immediate
 IGIT Increment Grade Immediate Twice
 IGO Increment Grade Overnight
 IHC Initiate Head Crash
 IHTFP Increment Hormones, Test For Puberty
 II Ignore Inquiry
 II Inquire and Ignore
 IIB Ignore Inquiry and Branch
 IIC Insert Invisible Characters
 IIH Ignore Inquiry and Hang
 IIL Irreversable Infinite Loop
 ILPS Invert Logical Power Supply
 IM Imagine Memory
 IMBP Insert Mistake and Blame Programmer
 IMP Imitate Monty Python
 IMPG IMPress Girlfriend
 IMV IMpress Visitors
 INCAM INCrement Arbitrary Memory
 ING INquire and iGnore
 INI Ignore Next Instruction
 INOP Indirect No-OP
 INR INstigate Rumor
 INSQSW INSert into Queue SomeWhere [for fino queues [first in never out]]
 INW INvalidate Warranty
 IOI Ignore Operator's Instruction
 IOP Interrupt and Order Pizza
 IOR Illogical OR
 IOS Ignore Operating System
 IP Increment and Pray
 IPI Ignore Previous Instruction
 IPM Ignore Programmer's Mistakes
 IPOP Interrupt Processor, Order Pizza
 IPS Incinerate Power Supply
 IPS Increment Power Supply
 IPT Ignite Paper Tape
 IRB Invert Record and Branch
 IRBI Insert Random Bits Indexed
 IRC Insert Random Commands
 IRE Insert Random Errors
 IRI Ignore Rude Interrupts
 IRPF Infinite Recursive Page Fault
 ISC Ignore Supervisor Call[s]
 ISC Ignore System Crash
 ISC Insert Sarcastic Comments
 ISI Increment and Skip on Inifinity
 ISL Illogical Shift Left
 ISP Increment and Skip on Pi
 ISR Illogical Shift Right
 ISTK Invert STacK
 ITML Initiate Termites into Macro Library
 IU Ignore User[s]
 IXOR Illogical eXclusive OR
 IZ Ignore Zeroes
 JAA Jump Almost Always
 JBS Jump and Blow Stack
 JC Jam Card punch
 JC Jump to Conclusions
 JCI Jump to Current Instruction
 JDO Jump and Destroy Operator
 JFC Jump to Floor and Crash
 JFM Jump on Full Moon
 JHRB Jump to H&R Block
 JK Jam Keypunch
 JLP Jump and Lose Pointer
 JLR Jump and Lose Return
 JMAT JuMp on Alternate Thursdays
 JN Jump to Nowhere
 JNL Jump when programmer is Not Looking
 JOB Jump On Beaver
 JOM Jump Out of Memory
 JOM Jump Over Moon
 JOP Jump OPerator
 JPA Jump when Pizza Arrives
 JRAN Jump RANdom
 JRCF Jump Relative and Catch Fire
 JRGA Jump Relative and Get Arrested
 JRL Jump to Random Location
 JRSR Jump to Random SubRoutine
 JS Jump Somewhere
 JSC Jump on System Crash
 JSOR Jump Somewhere Over Rainbow
 JSU Jump Self Unconditional
 JT Jump if Tuesday
 JTT Jump and Tangle Tape
 JTZ Jump to Twilight Zone
 JWN Jump When Necessary
 KCE Kill Consultant on Error
 KCE Kill repairman [CE]
 KDO Knock Disk Over
 KEPITU Kill Every Process In The Universe
 KOP Kill OPerator
 KP Krunch Paper
 KPR Kill PRogrammer
 KSR Keyboard Shift Right
 KUD Kill User's Data
 KWWE Kill Wicked Witch of East
 KWWW Kill Wicked Witch of West
 LAC Lose All Communication
 LAGW Load And Go Wrong
 LAP Laugh At Program
 LAP Laugh At Programmer
 LC Loop Continuously
 LCC Load and Clear Core
 LCD Launch Cartridge Disk
 LCK Lock Console Keyswitch
 LEB Link Edit Backwards
 LGA Load and Go Away
 LIA Load Ineffective Address
 LMB Lose Message and Branch
 LMO Load and Mug Operator
 LMYB Logical MaYBe
 LN Lose inode Number
 LNP Load N digits of Pi
 LO Load Operator
 LOSM Log Off System Manager
 LPPAS Line Printer Print And Smear
 LPRDD Line Printer Reverse Drum Direction
 LPTCR Line Printer Tangle and Chew Ribbon
 LPA Lead Programmer Astray
 LPRTC Load Program counter from Real Time Clock
 LR Load Revolver
 LRA Load RetroActively
 LRB Lose Record and Branch
 LRD Load Random Data
 LSPSW Load and Scramble PSW
 LTS Link To Sputnik
 LTS Loop Till Smokes
 LUM LUbricate Memory
 LWE Load WhatEver
 LWM Load Write-only Memory
 LWOM Load Write-Only Memory
 MAB Melt Address Bus
 MAN Make Animal Noises
 MAZ Multiply Answer by Zero
 MBC Make Batch Confetti
 MBF Multiply and Be Fruitful
 MBH Memory Bank Hold-up
 MBTD Mount Beatles on Tape Drive
 MBTOL Move Bug To Operator's Lunch
 MC Move Continuous
 MD Move Devious
 MDB Move and Drop Bits
 MDC Make Disk Crash
 MDDHAF Make Disk Drive Hop Across Floor
 MFO Mount Female Operator
 MILI Move It or Lose It
 MLB Memory Left shift and Branch
 MLP Make Lousy Program
 MLP Multiply and Lose Precision
 MLR Move and Lose Record
 MMF Melt Main Frame
 MMLG Make Me Look Good
 MNI Misread Next Instruction
 MOG Make Operator Growl
 MOL Move it Or Lose it
 MOP Modify Operator's Personality
 MOU MOunt User [causes computer to screw you]
 MPLP Make Pretty Light Pattern
 MRZ Make Random Zap
 MSF Make Silly Face
 MSGD Make Screen Go Dim
 MSLB Memory Shift Left and Branch
 MSP Mistake Sign for Parity
 MSPI Make Sure Plugged In
 MSR Melt Special Register
 MST Mount Scotch Tape
 MTHRDV Mag Tape High speed Rewind and Drop Vaccuum
 MTE Mangle Tape on Exit
 MTI Make Tape Invalid
 MTS Move to Tape Stretcher
 MUG Make Ugly Graphics
 MULZTO MULtiply by Zero and Trap on Overflow
 MUM Multi-Use Mnemonics
 MVAR MoVe to Random Address
 MVLR MoVe and Lose Record
 MVRA MoVe to Random Address
 MW Malfunction Whenever
 MW Multiply Work
 MWAG Make Wild-Assed Guess
 MWC Move and Wrap Core
 MWT Malfunction Without Telling
 NBC Negate By Clearing
 NCW Notch Carriage and Way
 NESI No one Expects the Spanish Inquisition
 NMI Negate Most Integers
 NOP Needlessly Omit Pointer
 NPC Normalize Program Counter
 NPN No Program Necessary [VAX]
 NTGH Not Tonight, i've Got a Headache
 OBB Overflow Bit Bucket
 OCF Open Circular File
 OHS Order Ham Sandwich
 OMC Obscene Message to Console
 OMC Overheat Memory Chip
 OML Obey Murphy's Laws
 OPI Order Pizza Immediately
 OPP Order Pizza for Programmer
 ORSD On Read error Self-Destruct
 OSI Overflow Stack Immediate
 OSI Overflow Stack Indefinite
 OSP Open Six-Pack
 OTL Out To Lunch
 OU Offend User
 P$ ! Punch Obscenity
 PA Punch in ASCII
 PAL Pack And Leave
 PAS Print And Smear
 PAUD PAUse Dramatically
 PAZ Pack Alpha Zone
 PAZ Pack Alpha and drop Zones
 PBC Print and Break Chain
 PBD Print and Break Drum
 PBL Pack Bags and Leave
 PBM Pop Bubble Memory
 PBPBPBP Place Backup in Plain Brown Paper Bag Please
 PBS Pop Before Stacking
 PBS Print on the Back of the Screen
 PBST Play Batch mode Star Trek
 PCB Pause for Coffee Break
 PCD PunCh Disk
 PCI Pleat Cards Immediate
 PCR Print and Cut Ribbon
 PCR Punch Card Reader
 PCS Push to Centre of Stack
 PD Play Dead
 PD Punch Disk
 PDK Punch DisK
 PDLD Power Down and Lock Door [to computer room]
 PDM Play Drum Memory [dated, wot?]
 PDP Pop Disk Pack
 PDSK Punch DiSK
 PEHC Punch Extra Holes in Cards
 PEP Print on Edge of Paper
 PF Punch, Fruit
 PFD Punt on Fourth Down
 PFE Print Floating Eye
 PFML Print Four Million Lines
 PG Print Garbage
 PH Phone Home
 PHO Pull Hair Out
 PI Punch Invalid
 PIBM Pretend to be an IBM
 PIC Print Illegible Characters
 PIC Print Invalid Character
 PIC Punch Invalid Character
 PLSC Perform Light Show on Console
 PM Punch Memory
 PNIH Place Needle In Haystack
 PNRP Print Nasty Replies to Programmer
 PO Punch Operator
 POCL Punch Out Console Lights
 POF Print On Fly
 POG Print Only Greek
 POI Punch Operator Immediate
 POP Pop Or Push
 POPI Punch OPerator Immediate[ly]
 POPN Punch OPerator's Nose
 PPA Print Paper Airplanes
 PPC Purge Pascal Compiler [HP 3000]
 PPL Perform Perpetual Loop
 PPP Print Programmer's Picture
 PPR Play Punk Rock
 PPS Push or Pop Stack [6502 does this sometimes]
 PPSW Pack Program Status Word
 PRS PRint and Smear
 PS Print and Smear
 PS* Punch Obscenity
 PSD Pause and Smoke Dope
 PSP Print and Shred Paper
 PSR Print and Shred Ribbon
 PT Punch Tape
 PTP Produce Toilet Paper
 PUO Perform Unknown Operation
 PURB Pick Up Random Bits
 PVC Punch Variable-length Card
 PVLC Punch Variable Length Card
 PWP Print Without Paper
 PWS create PoWer Surge
 PYS Program YourSelf
 QBDH Quit and Become a DeadHead
 QWYA Quit While Your Ahead
 RA Randomize Answer
 RAM Randomly Access Memory
 RAM Read Ambiguous Memory
 RAN RANdom opcode [similar to 16-bit what gate]
 RASC Read And Shred Card
 RAST Read And Shred Tape
 RAU Ridicule All Users
 RBAG Random Branch Address Generator
 RBAO Ring Bell and Annoy Operator
 RBG Random Bug Generator
 RBLY Restore Back-up from Last Year
 RBT Read Blank Tape
 RBT Rewind and Break Tape
 RC Read Chaos
 RC Rewind Core
 RCAJ Read Card And Jam
 RCB Read Chad Box
 RCB Read Command Backwards
 RCB Run Clock Backwards
 RCC Read Card and Chew
 RCCP Randomly Corrupt Current Process
 RCF Rewind Cabinet Fans
 RCKG Read Count Key and Garbage
 RCKG Read Count Key and Giggle
 RCL Rotate Carry Left
 RCP Reschedule Car Payments
 RCP Rewind Card Punch
 RCR Rewind Card Reader
 RCRV Randomly Convert to Reverse Video
 RCS Read Card and Scramble data
 RCSD Read Card and Scramble Data
 RCSD Read Card and Scramble Deck
 RD Randomize Data
 RD Reverse Directions
 RDA Refuse to Disclose Answer
 RDB Replace Database with Blanks
 RDB Run Disk Backwards
 RDD Reverse Disk Drive
 RDDBF Rock Disk Drive Back and Forth
 RDEB Read and Drop Even number of Bits
 RDF Randomize Directory Filenames
 RDI Reverse Disk Immediate
 RDI Reverse Drum Immediate
 RDI Reverse Drun Immediate
 RDI Rewind Disk Immediate
 RDK Reverse DisK
 RDKI Reverse DisK Immediate
 RDP ReaD card Punch
 RDR Reverse Disk Rotation
 RDS ReaD Sideways
 RENVR REName Variables Randomly
 RET Read and Erase Tape
 RF Read Fingerprints
 RF Rewind Forward
 RFS Resume Flight Simulator
 RFSC Read Feed and Shred Card
 RG Record Garbage
 RHNEZ Randomize and Halt if Not Equal to Zero
 RHO Randomize and Hold all Output
 RIC Rotate Illogical thru Carry
 RID Read Invalid Data
 RIG Read Interrecord Gap
 RIODN Rotate I/O Device Numbers
 RIOP Rotate I/O Ports
 RIOS Read In-Only Storage
 RIR Read Invalid Record
 RIRG Read Inter-Record Gap
 RJE Return Jump and Explode
 RLC Relocate and Lose Core
 RLC Reread Last Card
 RLC Rotate Left with Carolyn
 RLI Rotate Left Indefinitely
 RLP Refill Light Pen
 RLP Rewind Line Printer
 RM Reinitialize Meter
 RM Ruin My files
 RMI Randomize Memory Immediate
 RMM Read Manager's Mind
 RMT ReMove Trap
 RMV Remove Memory Virtues
 RN Read Noise
 RNBS Reflect Next Bus Signal
 RNR Read Noise Record
 ROC Randomize Op Codes
 ROC Rotate Outward from Center
 ROD ROtate Diagonally
 ROLP Rewind On-Line Printer
 ROM Read Operator's Mind
 ROO Rub Out Operator
 ROOP Run Out Of Paper
 ROPF Read Other People's Files
 ROS Reject Operating System
 ROS Return On Shield
 RP Read Printer
 RPB Raise Parity Bits
 RPB Read Print and Blush
 RPB Reverse Parity and Branch
 RPBR Reverse Parity and BRanch
 RPC Rotate Program Counter
 RPL Read PLotter
 RPM Read Programmer's Mind
 RPU Read character and Print Upsidedown
 RRC Rotate Random thru Carry
 RRR Randomly Rotate Register
 RRR Read Record and Run away
 RRR Rotate Right Randomly
 RRRL Random Rotate Register Left
 RRRR Random Rotate Register Right
 RRSGWSSNK Round and Round She Goes, Where She Stops, Nobody Knows
 RRSTC Return on Ruby Slippers Triple-Click
 RRT Record and Rip Tape
 RRTD Read Rules, Then Delete them
 RRTU Read Rules, Then Update them
 RS Random Slew
 RS Read Sideways
 RSC Read and Shred Card
 RSD Read and Shuffle Deck
 RSD on Read error Self-Destruct
 RSSC Reduce Speed, Step Carefully [for improved accuracy]
 RST Rewind and Stretch Tape
 RSTOM Read from STore-Only Memory
 RSVP Read, Shred, Vacillate and Punt
 RT Reduce Throughput
 RTAB Rewind Tape And Break
 RTP Reduce ThroughPut
 RTR Refuse To Run
 RTS Return To Sender [address unknown]
 RVAC Return from VACation
 RWBT ReWind and Break Tape
 RWC ReWind and Crash heads
 RWCR ReWind Card Reader
 RWD ReWind Disk
 RWE Run Without Error
 RWF Read Wrong File
 RWM ReWind Memory
 RWOC Read Writing On Card
 RWRT Read While Ripping Tape
 RWRT Read, Write, and Rip Tape
 RWT Read/Write while stretching Tape
 SA Store Anywhere
 SABC Shake And Bake Chips
 SAC Scramble All Channels
 SAD Search And Destroy
 SAI Skip All Instructions
 SAICZ Set All Immediate Constants to Zero [pronounced "sexy"]
 SAK Snooze At Keyboard
 SAS Show Appendix Scar
 SAS Sit And Spin
 SB Shift a Bit
 SBE Swap Bits Erratically
 SBF Skip on Bitbucket Full
 SBM Shift a Bit More
 SC Scramble Channels
 SC Shred Cards
 SCB Spindle Card and Belch
 SCCA Short Circuit on Correct Answer
 SCD Shuffle and Cut Dec
 SCH Slit Cards Horizontal
 SCI Shred Cards Immediate
 SCL Shift a Chip Left
 SCM Set for Crash Mode
 SCOM Set Cobol-Only Mode
 SCP SCatter Printer
 SCR Shift a Chip Right
 SCRBL SCRibBLe to disk - faster than a write
 SCRRC SCRamble Register Contents
 SCST Switch Channel to Star Trek
 SCTR Stick Card To Reader
 SD Scatter Deck
 SD Scramble Directory
 SD Slip Disk
 SD Snare Drum
 SDAT Scatter DATa
 SDC Spool Disk to Console
 SDD Seek and Destroy Data
 SDD Spin Disk Dry
 SDDB Snap Disk Drive Belt
 SDE Solve Differential Equations
 SDI Self Destruct Immediate
 SDK Slip DisK
 SDM Search and Destroy Memory
 SDR Slam Down Rondo [worst soda ever made]
 SEB Stop Eating and Burp
 SEOB Set Every Other Bit
 SESUR Sing Elvis Songs Until he Returns
 SEX Set EXecution register
 SEX Sign EXtend
 SFH Set Flags to Half-mast
 SFP Send For Pizza
 SFR Send For Reinforcements
 SFT Stall For Time
 SFTT Strip Form Tractor Teeth
 SGP Shit or Get off the Pot
 SHAB SHift A Bit
 SHABM SHift A Bit More
 SHB Stop and Hang Bus
 SHCD SHuffle Card Deck
 SHIT Stop Here If Thursday
 SHLBM SHift a Little Bit More
 SHON Simulate HONeywell CPU [permanent no-op]
 SHR SHift Random
 SHRC SHRed Card
 SHRT SHRed Tape
 SID Switch to Infinite Density
 SIP Store Indefinite Precision
 SIPA SInking Point Arithmetic
 SJV Scramble Jump Vectors
 SLC Search for Lost Chord
 SLP Sharpen Light Pen
 SLP Sharpen Light Pencil
 SLPA SLiding Point Arithmetic
 SM Scatter Memory
 SMC Scatter Multiplexor Channel
 SMC Scramble Memory Contents
 SMD Spontaneous Memory Dump
 SMR Skip on Meaningless Result
 SMS Shred Mylar Surface
 SNAFU System Needs A Fuck-Up
 SNARF System Normalize And Reset Flags
 SNM Show No Mercy
 SNO Send Nukes on Overflow
 SOAWP SOlve All the World'd Problems
 SOB Shit On Byte
 SOB Stew On Brew
 SOD Surrender Or Die
 SOI Screw O'coin Intentional [personal one]
 SOL Shift On Low
 SOL Shit Out of Luck
 SOP Stop and Order Pizza
 SOS Sign Off, Stupid
 SOT Sit On a Tack
 SP Scatter Print
 SPA Sliding Point Arithmetic
 SPB Simulate Peanut Butter
 SPD SPin Disk
 SPD SPin dry Disk
 SPD Shuffle Program Deck
 SPOFF Switch Processor OFF
 SPON Switch Processor ON
 SPPC Suspend Printing Playboy Calendar
 SPS Set Panel Switches
 SPSW Scramble Program Status Word
 SQPC Sit Quietly and Play with your Crayons
 SQPWYC Sit Quietly and Play With Your Crayons
 SRBO Set Random Bits to Ones
 SRBZ Set Random Bits to Zeroes
 SRC Select Random Channel
 SRC Select Reader and Chew cards
 SRC Skip to Random Channel
 SRCC Select Reader and Chew Cards
 SRD Switch to Random Density
 SRDR Shift Right Double Ridiculous
 SRNZ Subtract and Reset to NonZero
 SRO Sort with Random Ordering
 SROS Store in Read-Only Storage
 SRR Shift Registers Random
 SRSD Seek Record and Scar Disk
 SRSD Seek Record and Scratch Disk
 SRTC Stop Real-Time Clock
 SRU Signoff Random User
 SRZ Subtract and Reset to Zero
 SSB Scramble Status Byte
 SSD Scratch System Disk
 SSD Seek and Scar Disk
 SSD Stacker Select Disk
 SSD Stop and Scratch Disk [3815]
 SSJ Select Stacker and Jam
 SSJP Select Stacker and JumP
 SSM Solve by Supernatural Means
 SSM Stacker Select Memory
 SSP Seek SPindle
 SSP Smoke and SPark
 SST Seek and Stretch Tape
 SST Stop and Stretch Tape
 SSW Scramble Status Word
 ST Set and Test
 STA STore Anywhere
 STC Slow To a Crawl
 STD Stop, Take Drugs
 STM STretch Magtape
 STM Skip on Third Monday
 STO Strangle Tape Operator
 STRIKE STRIKE for more pay, better hours, etc.
 STROM STore in Read-Only Memory
 STTHB Set Terminal to Three Hundred Baud
 SUIQ Subtract User's IQ
 SUME SUprise ME
 SUP Shred User Printout
 SUP Solve Unsolvable Problem
 SUR Screw Up Royally
 SUS Stop Until Spring
 SUS Subtract Until Senseless
 SWAT SWAp Terminals
 SWN SWap Nibbles
 SWOS Store in Write-Only Storage
 SWS Sort to Wrong Slots
 SWT Select Wrong Terminal
 SWU Select Wrong Unit
 SWZN Skip Whether Zero or Not
 SZD Switch to Zero Density
 TAH Take A Hike
 TAI Trap Absurd Inputs
 TARC Take Arithmetic Review Course
 TBFTG Two Burgers and Fries To Go
 TC Transmit Colors
 TCD Transfer Control to Disk
 TCOL Transfer Control to Overhead Lights
 TCPL Transfer Control to Pilot Lights
 TCWS Transfer Control to Wall Socket
 TDB Transfer and Drop Bits
 TDRB Test and Destroy Random Bits
 TDS Trash Data Segment
 TET Triple Execution Time [SUN]
 TH Transfer and Hang
 TLNF Teach me a Lesson i'll Never Forget
 TLO Turn indicator Lights Off
 TLR Transfer and Lose Return
 TLW Transfer and Lose Way
 TMD Transfer Monitor to Disk
 TN Take a Nap
 TOAC Turn Off Air Conditioner
 TOG Take Out Garbage
 TOG Time Out, Graduate
 TOH Take Operator Hostage
 TOO Turn On/off Operator
 TOP Trap OPerator
 TOS Trash Operating System
 TOW Take Over World
 TPD Terminal Printer Destruct
 TPD Total Program Diagnostic
 TPD Triple Pack Decimal
 TPDH Tell Programmer to Do it Himself
 TPF Turn Power oFf
 TPN Turn Power oN
 TPO Turn Power Off
 TPR Tear Paper
 TR Turn into Rubbish
 TRA Te Rdls Arvs [type ridiculous abbreviations]
 TRD TRansfer and Drop bit
 TSE Test and Swap if Equal
 TSH Trap Secretary and Halt
 TSM Trap Secretary and Mount
 TST Trash System Tracks
 TSTT TeSt a biT for Two
 TTCN TeleType Clunk Noise
 TTEKB TeleType Electrify KeyBoard
 TTA Try, Try Again
 TTAS Twist Tape And Shout
 TTIHLIC Try To Imagine How Little I Care
 TTITT Turn 2400 foot Tape Into Two 1200 foot Tapes
 TTL Tap Trunk Line
 TTL Time To Logoff
 TYF Trust Your Feelings
 UA Unload Accumulator
 UAI Use Alternate Instruction set
 UAP (AM)Use All Power Available (And More)
 UCB Uncouple CPU[s] and Branch
 UCIP Update Card In Place
 UCK Unlock Console Keyswitch
 UCLB Uncouple Comm Lines and Branch
 UCM Uncouple CoMm lines and branch
 UDR Update and Delete Record
 UEPM Update and Erase Programmer's Mind
 UER Update and Erase Record
 UFO Unidentified Flag Operation
 ULDA UnLoaD Accumulator
 UMH Use Mains voltage as logic High
 UMR Unlock Machine Room
 UNPD UNPlug and Dump
 UOP Useless OPeration
 UP Understand Program[mer]
 UPA Use all Power Available
 UPC Understand Program[mer]'s Comments
 UPI Undo Previous Instruction
 URB Update, Resume and Branch
 US Upset Stacker
 UTF Unwind Tape onto Floor
 UTF Use The Force
 UUBR Use Undefined Base Register
 VAX Violate All eXecutions
 VFE Violate Field Engineer
 VFO Violate Female Operator
 VM Virtueless Memory
 VMA Violate Maintenance Agreement
 VNO Violate Noise Ordinance
 VPA Vanishing Point Arithmetic
 VVM Vaporize Virtual Memory
 WAD Walk Away in Disgust
 WAT WAste Time
 WBB Write to the Bit Bucket
 WBT Water Binary Tree
 WC Waste Core
 WCKG Write Count Key and Giggle
 WCR Write to Card Reader
 WDR Warp disk DRive
 WED Write and Erase Data
 WEMG Write Eighteen Minute Gap
 WF Wait Forever
 WGPB Write Garbage in Process-control Block
 WHFO Wait until Hell Freezes Over
 WHP Wave Hands over Program
 WHR Write Hit Record
 WI Why Immediate
 WI Write Illegibly
 WID Write Invalid Data
 WMC Write Millions of Comments
 WMTE Wrap Memory Transfer Erase
 WN Why Not?
 WNAM We Need A Miracle
 WNHR Write New Hit Record
 WNR Write Noise Record
 WP Write Poop
 WPET Write Past End of Tape
 WPF Write to Protected Files
 WPM Write Programmer's Mind
 WRC Write on Read-Cycle
 WRP Write RAM Permanently
 WSE Write Stack Everywhere
 WSWW Work in Strange and Wondrous Ways
 WUPO Wad Up Printer Output
 WWLR Write Wrong Length Record
 WWR Write Wrong Record
 XAND eXclusive AND
 XIO eXecute Invalid Opcode
 XKF eXecute Kermit the Frog
 XM eXclusive Maybe
 XMB eXclusive MayBe
 XOH eXecute no-Op and Hang
 XOR eXecute Operator
 XOS eXchange Operator's Sex
 XPR eXecute PRogrammer
 XPSW eXecute Program Status Word
 XSP eXecute Systems Programmer
 XVF eXchange Virtue for Fun
 YAB Yet Another Bug
 YASE Yet Another Stupid Error
 ZAP Zero and Add Packed
 ZAR Zero Any Register
 ZD Zap Directory
 ZEOW Zero Every Other Word
 ZPI ZaP Immediate

Credit: "Canonical alphabetized list of assembler opcodes that really ought to exist somewhere. It is the combination of all the lists of such opcodes I have seen. (My thanks to all who have contributed to this list.) DaviD W. Sanderson" - 1992