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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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Dinos are not dead. They are alive and well and living in data centers all around you. They speak in tongues and work strange magics with computers. Beware the dino! And just in case you're waiting for the final demise of these dino's: remember that dinos ruled the world for 155-million years! |
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