The opcodes below have been collected from various sources.
| 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 Die peaCefully |
| ACQT | Advance Clock to Quitting Time |
| ADB | Another Damn Bug [UNIX] |
| AEE | Absolve Engineering Errors |
| AFF | Add Fudge Factor |
| AFHB | Align Fullword on Halfword Boundary |
| AFP | Abnormalize Floating Point |
| AFR | Abort Funny Routine |
| AFVC | Add Finagle's Variable Constant |
| AGB | Add GarBage |
| AI | Add Improper |
| AIB | Attack Innocent Bystander |
| AMM | Add Mayo and Mustard |
| AMM | Answer My Mail |
| AMS | Add Memory to System |
| ANFSCD | And Now For Something Completely Different |
| AOI | Annoy Operator Immediate |
| APX | Apply Power and Explode |
| AR | Advance Rudely |
| AR | Alter Reality |
| ARN | Add and Reset to Nonzero |
| ARZ | Add and Reset to Zero |
| AS | Add Sideways |
| AT | Accumulate Trivia |
| AWP | Argue With Programmer |
| AWTT | Assemble with Tinker Toys |
| BA | Branch Anywhere |
| BAC | Branch to Alpha Centauri |
| BAF | Blow All Fuses |
| BAFL | Branch And FLush |
| BAH | Branch And Hang |
| BALC | Branch And Link Cheeseburger |
| BAP | Branch And Punt |
| BASF | Branch And Set Fire |
| BAW | Bells And Whistles |
| BB | Branch on Bug |
| BBBB | Byte Baudy Bit and Branch |
| BBD | Branch on Bastille Day |
| BBI | Branch on Blinking Indicator |
| BBIL | Branch on Burned-Out Indicator Light |
| BBL | Branch on Burned out Light |
| BBLB | Branch on Blinking Light Bulb |
| BBQ | Branch and Bar-B-Q |
| BBT | Branch on Binary Tree |
| BBW | Branch Both Ways |
| BCB | Burp and Clear Bytes |
| BCBF | Branch on Chip Box Full |
| BCF | Branch and Catch Fire |
| BCF | Branch on Chip box Full |
| BCH | Branch on CPU Halted |
| BCIL | Branch Creating Infinite Loop |
| BCP | Backspace Card Punch |
| BCR | Backspace Card Reader |
| BCU | Be Cruel and Unusual |
| BD | Backspace Disk |
| BD | Branch to Data |
| BDC | Break Down and Cry |
| BDI | Branch to Data, Indirect |
| BDM | Branch and Disconnect Memory |
| BDT | Burn Data Tree |
| BE | Branch Everywhere |
| BEW | Branch Either Way |
| BF | Belch Fire |
| BFF | Branch and Form Feed |
| BFM | Be Fruitful and Multiply |
| BH | Branch and Hang |
| BIR | Branch Inside Ranch |
| 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 |
| BM | Branch Maybe |
| BMI | Branch on Missing Index |
| BMI | Branch to Muncee, Immediate |
| BMP | Branch and Make Popcorn |
| BMR | Branch Multiple Registers |
| BNA | Branch to Nonexistant Address |
| BNCB | Branch and Never Come Back |
| BNR | Branch for No Reason |
| BOB | Branch On Bug |
| BOD | Beat On the Disk |
| BOD | Branch on Operator Desperate |
| BOH | Branch on Humidity |
| BOHP | Bribe Operator for Higher Priority |
| BOI | Byte Operator Immediately |
| BOMB | Branch Out Make Bug |
| BOP | Boot OPerator |
| BOT | Branch On Tree |
| BPB | Branch on Program Bug |
| BPDI | Be Polite, Don't Interrupt |
| BPIM | Bury Programmer In Manuals |
| BPL | Branch PLease |
| BPO | Branch if Power Off |
| BPP | Blob Pen Plotter |
| BPP | Branch & Pull Plug |
| BR | Byte and Run |
| BRA | Branch to Random Address |
| BRI | BRanch Indefinitely |
| BRO | BRanch to Oblivion |
| BRSS | BRanch on SunSpot |
| BS | Behave Strangely |
| BSC | Branch on Second Coming |
| BSI | Backup Sewer Immediately |
| BSM | Branch and Scramble Memory |
| BSO | Branch on Sleepy Operator |
| BSP | BackSpace Printer |
| BSP | Backspace Punch |
| BSR | Branch and Stomp Registers |
| BST | Backspace and Stretch Tape |
| BTAD | Branch To Auto-Destruct |
| BTD | Branch on Time of Day |
| BTD | Byte The Dust |
| BTJ | Branch and Turn Japanese |
| BTO | Branch To Oblivion |
| BTW | Branch on Third Wednesday |
| BU | Branch Unexpectedly |
| BVS | Branch & 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 |
| BYTE | BYte TEst |
| 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 |
| CARS | Create Additional Register Set |
| CAT | Confused And Tired [UNIX] |
| CB | Consult Bozo |
| CBA | Compare and Branch Anyway |
| CBBR | Crash & Blow Boot ROM |
| CBNC | Close, but no Cigar |
| CBS | Clobber BootStrap |
| CC | Call Calvery |
| CC | Compliment Core |
| CCB | Chocolate Chip Byte-mode |
| CCB | Consult Crystal Ball |
| CCC | Crash if Carry Clear |
| CCCP | Conditionally Clear Core and Proceed |
| CCCP | Conditionally Corrupt Current Process |
| CCD | Choke Cough and Die |
| CCD | Clear Core and Dump |
| CCP | Clear Core and Proceed |
| CCR | Change Channels at Random |
| CCS | Chinese Character Set |
| CCWR | Change Color of Write Ring |
| CD | Complement Disk |
| CDC | Clear Disk and Crash |
| CDC | Close Disk Cover |
| CDIOOAZ | Calm Down, It's Only Ones and Zeroes |
| CDS | Change Disk Speed |
| CEMU | Close Eyes and Monkey With User Space |
| CEX | Call EXterminator |
| CF | Come From (replaces GOTO) |
| CFE | Call Field Engineer |
| CFP | Change and Forget Password |
| CFS | Corrupt File Structure |
| CG | Convert to Garbage |
| CH | Create Havoc |
| CHAPMR | Chase Pointers Around Machine Room |
| CHCJ | Compare Haig to Christine Jorgensen |
| 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 Immediately |
| CM | Circulate Memory |
| CMD | CPU Melt Down |
| CMD | Compare Meaningless Data |
| CMI | Clobber Monitor Immediately |
| CML | Compute Meaning of Life |
| CMP | Create Memory Prosthesis |
| CMS | Click MicroSwitch |
| CN | Compare Nonsensically |
| CNB | Cause Nervous Breakdown |
| CNS | Call Nonexistent Subroutine |
| COCS | Copy Object Code to Source |
| COD | Crash On Demand |
| COLB | Crash for Operator's Lunch Break |
| COM | Clear Operator's Mind |
| COMF | COMe From |
| CON | Call Operator Now |
| COS | Copy Object code to Source file |
| COWYHU | Come Out With Your Hands Up |
| CP | Compliment Programmer |
| CP%FKM | CPU - FlaKeout Mode |
| CP%WM | CPU - Weird Mode |
| CPB | Create Program Bug |
| CPN | Call Programmer Names |
| CPPR | Crumple Printer Paper and Rip |
| CRASH | Continue Running After Stop or Halt |
| CRB | Crash and Burn |
| CRD | Confirm Rumor by Denial |
| CRM | CReate Memory |
| CRM | Clear Random Memory |
| CRN | Compare with Random Number |
| CRN | Convert to Roman Numerals |
| CRYPT | reCuRsive encrYPt Tape mneumonic [UNIX] |
| 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 & Temperature |
| CU | Convert to Unary |
| CUC | Cheat Until Caught |
| CVFL | ConVert Floating to Logical |
| CVFP | ConVert FORTRAN to PASCAL |
| CVG | Convert to Garbage |
| CVS | ConVert to Sesquinary |
| 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 |
| DAO | Divide And Overflow |
| DAP | Deselect Active Peripheral |
| DAUF | Delete All Useless Files |
| DB | Drop Bits |
| DBL | Desegregate Bus Lines |
| DBLD | Drop Bits Lose Data |
| 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 |
| DCD | Drop Cards Double |
| DCGC | Dump Confusing Garbage to Console |
| DCI | Disk Crash Immediate |
| DCON | Disable CONsle |
| 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 |
| DDWB | Deposit Directly in Wastepaper Basket |
| DE | Destroy Peripherals |
| DEB | Disk Eject Both |
| DEC | Decompile Executable Code |
| DEI | Disk Eject Immediate |
| DEM | Disk Eject Memory |
| DF | Disk Feed |
| DGT | Dispense Gin & Tonic |
| DHTPL | Disk Head Three Point Landing |
| DIA | Develop Ineffective Address |
| DIE | DIsable Everything |
| DIIL | Disable Interrupts and enter Infinite Loop |
| DIRFO | Do It Right For Once |
| DISC | DISmount Cpu |
| DK | Destroy Klingons |
| DK%WMM | Disk Unit - Washing Machine Mode |
| DKP | Disavow Knowledge of Programmer |
| DLN | Don't Look Now... |
| DLP | Drain Literal Pool |
| DMAG | Do MAGic |
| DMNS | Do What I Mean, Not What I Say |
| DMPE | Decide to Major in Phys. Ed. |
| DMPK | Destroy Memory Protect Key |
| DMZ | Divide Memory by Zero |
| DNPG | Do Not Pass Go |
| DO | Divide and Overflow |
| DOC | Drive Operator Crazy |
| DPCS | Decrement Program Counter Secretly |
| DPMD | Drop Pen and Mangle Drum |
| DPMI | Declare Programmer Mentally Incompetent |
| DPMK | Destroy Memory Protect Key |
| DPN | Double Precision No-op |
| DPR | Destroy Program |
| DPS | Disable Power Supply |
| DR | Detach Root |
| DRAF | DRAw Flowchart |
| DRAM | Decrement RAM |
| DRD | DRop Dead |
| DRI | Disable Random Interrupt |
| DROM | Destroy ROM |
| DRT | Disconnect Random Terminal |
| DS | Deadlock System |
| DSH | Destroy Sector Header |
| DSI | Do Something Interesting |
| DSO | Disable System Operator |
| DSP | Degrade System Performance |
| DSR | Detonate Status Register |
| DSTD | Do Something Totally Different |
| DSUIT | Do Something Utterly, Indescribably Terrible |
| DT%FFP | DecTape - unload and Flappa FlaP |
| DT%SHO | DecTape - Spin Hubs Opposite |
| DTB | Destructively Test Bit |
| 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 |
| DWIT | Do What I'm Thinking |
| 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 |
| EBQR | Enable Bi-Quinary Arithmetic |
| EBR | Erase Before Reading |
| EBRS | Emit Burnt Resistor Smell |
| EC | Eat card |
| ECL | Early Care Lace |
| ECO | Electrocute Computer Operator |
| ECP | Erase Card Punch |
| ED | Eject Disk |
| ED | Execute Data (verrrry useful) |
| EDD | Eat Disk and Die |
| EDIT | Erase Data and Increment Time |
| EDP | Emulate Debugged Program |
| EDR | Execute Destructive Read |
| EDS | Execute Data Segment |
| 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 |
| EIAO | Execute In Any Order |
| EIO | Erase I/O page |
| EIOC | Execute Invalid Op Code |
| EIP | Execute Programmer Immeditely |
| EJD%V | EJect Disk with initial velocity V |
| ELP | Enter Loop Permenantly |
| EM | EMulate 407 |
| EM | Evacuate Memory |
| 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 Matag washer |
| ENA | ENable Anything |
| ENF | Emit Noxious Fumes |
| ENO | Emulate No-Op |
| EO | Electrocute Operator |
| EOB | Execute Operator and Branch |
| EOI | Explode On Interrupt |
| EOS | Erase Operating System |
| EP | Execute Programmer (last resort :-) |
| EPI | Execute Programmer Immediate |
| EPITS | Execute Previous Instruction Then Skip |
| EPL | Emulate Phone Line |
| EPP | Eject Printer Paper |
| EPS | Electrostatic Print and Smear |
| EPS | Execute Program Sideways |
| EPSW | Execute Program Status Word |
| EPT | Erase Process Table |
| EPT | Erase Punched Tape |
| ERAF | Execute Relocatable Address Field |
| ERIC | Eject Random Integrated Circuit |
| ERM | Erase Reserved Memory |
| EROM | Erase Read Only Memory |
| EROS | Erase Read-only Storage |
| ERS | Erase Read-only Storage |
| ESB | Eject Selectric Ball |
| ESC | Emulate System Crash |
| ESD | Eat Shit & Die |
| ESD | Eject Spinning Dish |
| ESL | Exceed Speed of Light |
| ESP | Enable SPrinkler system |
| ETI | Execute This Instruction |
| ETM | Emulate Trinary Machine |
| EVC | Execute Verbal Commands |
| EWD | Enter Warp Drive |
| EWM | Enter Whimsy Mode |
| EXI | Execute Invalid Operation |
| EXOP | Execute Operator |
| EXPP | Execute Political Prisoner |
| FAG | Fold And Go |
| FAY | Fetch Amulet of Yendor |
| FB | Find Bugs |
| FC | Fry Console |
| FCE | Fill Core with Epoxy |
| FCJ | Feed Cards and Jam |
| FD | Flip Disk |
| 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 |
| FOPC | False Out-of-Paper Condition |
| FPC | Feed Paper Continuously |
| FPT | Fire Photon Torpedoes |
| FRG | Fill with Random Garbage |
| FS | Feign Sleep |
| FSM | Fold, Spindle and Mutilate |
| FSRA | Forms Skip and Run Away |
| GBB | Go to Back of Bus |
| GCAR | Get Correct Answer Regardless |
| GDP | Grin Defiantly at Programmer |
| GDR | Grab Degree and Run |
| GENT | GENerate Thesis |
| GEW{JO} | Go to the End of the World {Jump Off} |
| GFD | Go Forth and Divide |
| GFM | Go Forth and Multiply |
| GIE | Generate Irreversible Error |
| GLC | Generate Lewd Comment |
| GMC | Generate Machine Check |
| GMCC | Generate Machine Check and Cash |
| GND | Guess at Next Digit |
| GORS | GO Real Slow |
| GREM | Generate Random Error Message |
| GREP | Global Ruin, Expiration, and Purgation [UNIX] |
| 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 |
| HACF | Halt And Catch Fire |
| HAH | Halt And Hang |
| HBW | Hang Bus & Wait |
| HCF | Halt and Catch Fire |
| 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 | Type "No Help Available" |
| HF | Hide File |
| 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 |
| HSC | Halt on System Crash |
| HSJ | Halt, Skip and Jump |
| HTC | Halt & Toss Cookies |
| HTS | Halt & Throw Sparks |
| HUAL | Halt Until After Lunch |
| HUP | Hang Up Phone |
| HWP | Halt Without Provocation |
| IAE | Ignore All Exceptions |
| IAI | Inquire and ignore |
| IAND | Illogical AND |
| IBM | Increment and Branch to Muncee |
| IBP | Insert Bug and Proceed |
| IBR | Insert Bugs at Random |
| ICB | Interrupt, Crash and Burn |
| ICM | Immerse Central Memory |
| ICMD | Initiate Core Melt Down |
| ICSP | Invert CRT Screen Picture |
| IDC | Initiate Destruct Command |
| IDI | Invoke Divine Intervention |
| IDNOP | InDirect No-OP |
| IDPS | Ignore Disk Protect Switch |
| IEOF | Ignore End Of File |
| IF | Invoke Force |
| IGI | Increment Grade Immediately |
| IGIT | Increment Grade Immediately Twice |
| IHC | Initiate Head Crash |
| II | Inquire and Ignore |
| IIB | Ignore Inquiry and Branch |
| IIB | Ignore Interrupt and Branch |
| IIC | Insert Invisible Characters |
| IIL | Irreversable Infinite Loop |
| IM | Imagine Memory |
| IMBP | Insert Mistake and Blame Programmer |
| IMP | Imitate Monty Python |
| IMPG | IMPress Girlfriend |
| IMV | IMpress Visitors |
| INCAM | INCrement Arbitrary Memory |
| INI | Ignore Next Instruction |
| INOP | Indirect No-OP |
| INR | INstigate Rumor |
| INW | INvalidate Warranty |
| IOI | Ignore Operator's Instruction |
| IOR | Illogical Or |
| 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 Calls |
| ISC | Ignore System Crash |
| ISC | Insert Sarcastic Comments |
| ISI | Increment and Skip on Inifinity |
| ISP | Increment and Skip on Pi |
| ISTK | Invert STacK |
| ITML | Initiate Termites into Macro Library |
| IU | Ignore User(s) |
| IWP | Ignore Write Protect notch |
| IZ | Ignore Zeroes |
| JAA | Jump Almost Always |
| JBS | Jump and Blow Stack |
| JCI | Jump to Current Instruction |
| JFM | Jump on Full Moon |
| JHRB | Jump to H&R Block |
| JLP | Jump and Lose Pointer |
| JMAT | JuMp on Alternate Thursdays |
| JN | Jump to Nowhere |
| JNL | Jump when programmer is Not Looking |
| 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 |
| JSC | Jump on System Crash |
| JSP | Jump on Sexy Programmer |
| 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 |
| KEPITU | Kill Every Process In The Universe |
| KP | Krunch Paper |
| KSR | Keyboard Shift Right |
| KUD | Kill User's Data |
| LAC | Lose All Communication |
| LAGW | Load And Go Wrong |
| LAP | Laugh At Program(mer) |
| LCC | Load and Clear Core |
| LCD | Launch Cartridge Disk |
| LCK | Lock Console Keyswitch |
| LEB | Link Edit Backwards |
| LIA | Load Ineffective Address |
| LMB | Lose Message and Branch |
| LMO | Load and Mug Operator |
| LMYB | Logical MaYBe |
| LN | Lose inode Number [UNIX] |
| LNP | Load N digits of Pi |
| LOSM | Log Off System Manager |
| LP%PAS | Line Printer - Print And Smear |
| LP%RDD | Line Printer - Reverse Drum Direction |
| LP%TCR | Line Printer - Tangle and Chew Ribbon |
| LPA | Lead Programmer Astray |
| LPRTC | Load Program counter from Real Time Clock |
| LR | Load Revolver |
| LRA | Load RetroActively |
| LRD | Load Random Data |
| LSPSW | Load and Scramble PSW |
| LTS | Link To Sputnik |
| LUM | LUbricate Memory |
| LWE | Load WhatEver |
| LWM | 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 |
| MET | Misread and Eat Tape |
| MFO | Mount Female Operator |
| MLB | Memory Left shift and Branch |
| MLP | Make Lousy Program |
| MLP | Multiply and Lose Precision |
| MLR | Move and Lose Record |
| MMLG | Make Me Look Good |
| MNI | Misread Next Instruction |
| MOG | Make Operator Growl |
| MOP | Modify Operator's Personality |
| MOU | MOunt User [causes computer to screw you] |
| MPLP | Make Pretty Light Pattern |
| MPS | Move Pen Somewhere |
| MRZ | Make Random Zap |
| MSGD | Make Screen Go Dim |
| MSP | Mistake Sign for Parity |
| MSPI | Make Sure Plugged In |
| MSR | Melt Special Register |
| MST | Mount Scotch Tape |
| MT | Muddle Through |
| MT%HRDV | Mag Tape - High speed Rewind and Drop Vaccuum |
| MTI | Make Tape Invalid |
| MW | Malfunction Whenever |
| MW | Multiply Work |
| MWAG | Make Wild-Assed Guess |
| MWC | Move and Wrap Core |
| MWK | Multiply WorK |
| MWT | Malfunction Without Telling |
| NBC | Negate By Clearing |
| NMI | Negate Most Integers |
| NOP | Needlessly Omit Pointer |
| NPC | Normalize Program Counter |
| NTGH | Not Tonight, i've Got a Headache |
| OCF | Open Circular File |
| OMC | Obscene Message to Console |
| OML | Obey Murphy's Laws |
| OPP | Order Pizza for Programmer |
| OSI | Overflow Stack Indefinitely |
| OTL | Out To Lunch |
| P$*! | Punch Obscenity |
| PA | Punch in ASCII |
| PAII | Prevent All Interrupts and Interrupt |
| PAS | Print And Smear |
| PAUD | PAUse Dramatically |
| PAZ | Pack Alpha Zone |
| PBC | Print and Break Chain |
| PBD | Print and Break Drum |
| PBM | Pop Bubble Memory |
| PBPBPBP | Place Backup in Plain Brown Paper Bag, Please |
| PBST | Play Batch mode Star Trek |
| PCB | Pause for Coffee Break |
| PCI | Pleat Cards Immediate |
| PCR | Print and Cut Ribbon |
| PD | Play Dead |
| PD | Punch Disk |
| PDLD | Power Down and Lock Door (to computer room) |
| PDN | Power Down and Normalize |
| PDSK | Punch DiSK |
| PDT | Punch and Delete Tape |
| PEHC | Punch Extra Holes in Cards |
| PEP | Print on Edge of Paper |
| PFD | Punt on Fourth Down |
| PFE | Print Floating Eye [rogue] |
| PFML | Print Four Million Lines |
| PI | Punch Invalid |
| PIBM | Pretend to be an IBM |
| PIC | Print Illegible Characters |
| PIC | Punch Invalid Character |
| PLSC | Perform Light Show on Console |
| PMT | Punch Magnetic Tape |
| PNIH | Place Needle in Haystack |
| PNRP | Print Nasty Replies to Programmer |
| PO | Punch Operator |
| POCL | Punch Out Console Lights |
| POG | Print Only Greek |
| POPI | Punch OPerator Immediately |
| POPN | Punch OPerator's Nose |
| PPA | Print Paper Airplanes |
| PPL | Perform Perpetual Loop |
| PPP | Print Programmer's Picture |
| PPR | Play Punk Rock |
| PPSW | Pack Program Status Word |
| PS* | Punch obscenity |
| PSD | Pause and Smoke Dope |
| PSP | Print and Shred Paper |
| PSP | Push Stack Pointer |
| PSR | Print and Shred Ribbon |
| PTAB | Position Tape Ass-Backwards |
| PTP | Produce Toilet Paper |
| PVLC | Punch Variable Length Card |
| PWP | Print Without Paper |
| PWS | create PoWer Surge |
| PYS | Program Yourself |
| QWYA | Quit While Your Ahead |
| RA | Randomize Answer |
| 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 |
| RBAO | Ring Bell and Annoy Operator |
| RBLY | Restore Back-up from Last Year |
| RBT | Read and Break Tape |
| RBT | Rewind and Break Tape |
| RBT | Read Blank Tape |
| RC | Rewind Core |
| RCAJ | Read Card And Jam |
| RCB | Read Command Backwards |
| RCB | Run Clock Backwards |
| RCC | Read Card and Chew |
| RCCP | Randomly Corrupt Current Process |
| RCF | Rewind Cabinet Fans |
| RCI | Read Card and Ignore |
| RCKG | Read Count Key and Garbage |
| RCL | Rotate Carry Left |
| RCR | Rewind Card Reader |
| RCRV | Randomly Convert to Reverse Video |
| RCS | Read Card Sideways |
| RCSD | Read Card, Scramble Data |
| RD | Randomize Data |
| RD | Reverse Directions |
| RD | Rewind Disk |
| 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 Drum Immediate |
| RDR | Reverse Disk Rotation |
| RDS | ReaD Sideways |
| RENVR | REName Variables Randomly |
| REOF | Read End-Of-File |
| RET | Read and Erase Tape |
| RF | Read Fingerprints |
| RG | Record Garbage |
| RHO | Randomize and Halt if not = to 0 |
| RI | Read Invalid |
| RIC | Rotate Illogical thru Carry |
| RID | Read Invalid Data |
| RIOP | Rotate I/O Ports |
| 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 | Ruin My files |
| RMI | Randomize Memory Immediate |
| 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 |
| 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 |
| RPBR | Reverse Parity and BRanch |
| RPC | Rotate Program Counter |
| RPM | Read Programmer's Mind |
| RPR | Ruin Printer Ribbon |
| RPU | Read character and Print Upsidedown |
| RRC | Rotate Random thru Carry |
| RRG | Read Record Gap |
| RRR | Renumber Registers Randomly |
| RRR | Randomly Rotate Register |
| RRR | Read Record and Run away |
| RRRL | Random Rotate Register Left |
| RRRR | Random Rotate Register Right |
| RRSGWSSNK | Round and Round She Goes, Where She Stops, Nobody Knows |
| RRT | Record and Rip Tape |
| RS | Random Slew |
| RSC | Read and Shred Card |
| RSD | On Read Error Self-Destruct |
| RSD | Read and Scramble Data |
| RST | Read and Shread Tape |
| RST | Rewind and Stretch Tape |
| RSTOM | Read From Store-only Memory |
| RT | Reduce Throughput |
| RTS | Return To Sender |
| RVAC | Return from VACation |
| RWCR | ReWind Card Reader |
| RWD | ReWind Disk |
| RWF | Read Wrong File |
| RWOM | Read Write-Only Memory |
| SA | Store Anywhere |
| SAD | Search(seek) and Destroy |
| SAI | Skip All Instructions |
| SARG | Swap Acess Registers and Gprs |
| SAS | Show Appendix Scar |
| SAS | Sit And Spin |
| SBE | Swap Bits Erratically |
| 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 |
| SCM | Set for Crash Mode |
| SCOM | Set Cobol-Only Mode |
| SCRRC | SCRamble Register Contents |
| SCST | Switch Channel to Star Trek |
| SCTR | Stick Card To Reader |
| SD | Scramble Directory |
| SD | Slip Disk |
| SDC | Spool Disk to Console |
| SDD | Seek and Destroy Data |
| SDDB | Snap Disk Drive Belt |
| SDE | Solve Differential Equations |
| SDI | Self Destruct Immediately |
| SDM | Search and Destroy Memory |
| SDR | Slam Down Rondo [worst soda ever made] |
| SEB | Stop Eating and Burp |
| SEOB | Set Every Other Bit |
| SEX | Set EXecution register [real on the RCA 1802] |
| 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 |
| SHAB | Shift a Bit |
| SHABM | Shift a Bit More |
| SHB | Stop and Hang Bus |
| SHCD | SHuffle Card Deck |
| SHIT | Stop Here If Thursday |
| SHON | Simulate HONeywell CPU [permanent NO-OP] |
| SHRC | SHRed Card |
| SHRT | SHRed Tape |
| SID | Switch to Infinite Density |
| SIP | Store Indefinite Precision |
| SJV | Scramble Jump Vectors |
| SLP | Sharpen Light Pen |
| SMC | Scramble Memory Contents |
| SMD | Spontaneous Memory Dump [classfied data only] |
| SMR | Skip on Meaningless Result |
| SMS | Shred Mylar Surface |
| SNARF | System Normalize and Reset Flags |
| SNM | Show No Mercy |
| SNO | Send Nukes on Overflow |
| SOAWP | SOlve All the World'd Problems |
| SOB | Stew On Brew [a real PDP-11 instruction] |
| SOD | Surrender Or Die! |
| 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 Dry Disc |
| SPD | Start and Power Down |
| 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 |
| SRBC | Sort Registers By Content |
| SRBO | Set Random Bits to Ones |
| SRBZ | Set Random Bits to Zeroes |
| SRC | Select Random Channel |
| SRCC | Select Reader and Chew Cards |
| SRD | Switch to Random Density |
| SRDR | Shift Right Double Ridiculous |
| 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 | Seek and Scar Disk |
| SSJ | Select Stacker and Jam |
| SSJP | Select Stacker and JumP |
| SSM | Solve by Supernatural Means |
| SSN | Set Serial Number |
| SSP | Seek SPindle |
| SSP | Smoke and SPark |
| SST | Seek and Stretch Tape |
| ST | Scratch Tape |
| ST | Set and Test |
| STA | STore Anywhere |
| STC | Slow To a Crawl |
| STD | Stop, Take Drugs |
| STI | STore Immediate |
| STM | STretch Magtape |
| STM | Skip on Third Monday |
| STO | Strangle Tape Operator |
| STPR | SToP Rain |
| STROM | Store in Read-only Memory |
| STT | Stretch and Tangle Tape |
| STTHB | Set Terminal to Three Hundred Baud |
| SUIQ | Subtract User's IQ |
| SUME | SUprise ME |
| 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 (but avoid red) |
| TD | Throw Disk |
| TDB | Transfer and Drop Bits |
| TDRB | Test and Destroy Random Bits |
| TDS | Trash Data Segment |
| TLNF | Teach me a Lesson i'll Never Forget |
| TLO | Turn Indicator Lights Off |
| TLW | Transfer and Lose Way |
| 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 |
| TPD | Triple Pack Decimal |
| TPDH | Tell Programmer to Do it Him/Herself |
| TPF | Turn Power Off |
| TPN | Turn Power On |
| TPR | Tear PapeR |
| TR | Turn into Rubbish [UNIX] |
| TRA | Te Rdls Arvs [Type Ridiculous Abbreviations] |
| TSH | Trap Secretary and Halt |
| TSM | Trap Secretary and Mount |
| TST | Trash System Tracks |
| TT%CN | TeleType - Clunk Noise |
| TT%EKB | TeleType - Electrify KeyBoard |
| TTA | Try, Try Again |
| 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 Instrucction set |
| UAPA(AM) | Use all Power Available (And More) |
| UC | Unwind Core |
| UCB | Uncouple CPU and Branch |
| UCK | Unlock Console Keyswitch |
| UCPUB | Uncouple CPU's and Branch |
| UDR | Update and Delete Record |
| UER | Update and Erase Record |
| UFO | Unidentified Flag Operation |
| ULDA | UnLoaD Accumulator |
| 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 |
| UPCI | Update Card In Place |
| UPI | Undo Previous Instruction (only in EMACS) |
| URB | Update, Resume and Branch |
| 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 |
| 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 |
| WBI | Water BInary tree |
| WBT | Water Binary Tree |
| WC | Waste Core [UNIX] |
| 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 |
| WI | Why Immediate |
| WI | Write Illegibly |
| WIC | Write Invalid Character |
| WID | Write Invalid Data |
| WNHR | Write New Hit Record |
| WNR | Write Noise Record |
| WPET | Write Past End of Tape |
| WPM | Write Programmer's Mind |
| WPO | Wad up Printer Output |
| WROM | Write Read-Only Memory |
| WRTC | Wind Real-Time Clock |
| WSE | Write Stack Everywhere |
| WSWW | Work in Strange and Wonderous Ways |
| WUPO | Wad Up Printer Output |
| WWLR | Write Wrong-Length Record |
| WWR | Write Wrong Record |
| WWTC | Wind Wrong-Time Clock |
| WWTO | Work When Trace On |
| XIO | eXecute Invalid Opcode |
| XKF | eXecute Kermit the Frog |
| 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 |
| ZAR | Zero Any Register |
| ZD | Zap Directory |
| ZEOW | Zero Every Other Word |
| ZPI | ZaP Immediate |
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