Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ncr-sd.UUCP Path: utzoo!watmath!clyde!cbosgd!ncr-sd!laman From: laman@ncr-sd.UUCP (Mike Laman) Newsgroups: net.jokes Subject: Complete list of Opcodes... Message-ID: <364@ncr-sd.UUCP> Date: Mon, 16-Dec-85 13:52:57 EST Article-I.D.: ncr-sd.364 Posted: Mon Dec 16 13:52:57 1985 Date-Received: Tue, 17-Dec-85 04:32:23 EST Distribution: net Organization: NCR Corporation, San Diego Lines: 1212 It seems it is time for me to post my canonical list of opcodes again. I currently have 1200 opcodes in this list. If you have some favorite opcodes, please be sure they ARE NOT in this list. You can also mail a copy to me if you want to be sure it will be included the next time. I am sending this list out since I just read an article containing a > 700 opcodes already on this list ==> already seen on the net. I hope this will cut down the traffic so others won't keep posting opcodes already seen many times. This list was started about 2 years ago from the net. I keep adding new ones when I see them. I did add the new ones from the previous message (~20). Enjoy... ============== Cut here ============== 1401 1401 Incompatibility 360 360 Fibulation 370 370 Immolation 407 407 Emulation AAC Alter All Commands AAD Alter All Data AAO Add And Overflow AAR Alter At Random AB Add Backwards ABC Abolish Basic Compiler ABC AlphaBetize Code ABR Add Beyond Range ACC Advance Cpu Clock ACM Automatically Clear Memory ACQT Advance Clock to Quitting Time ADB Another Damn Bug [UNIX] ADDN ADD Nauseum AEE Absolve Engineering Errors AFF Add Fudge Factor AFHB Align Fullword on Halfword Boundary AFP Abnormalized Floating Point AFVC Add Finagle's Variable Constant AGB Add GarBage AI Add Improper AI Add Improperly AIB Attack Innocent Bystander AII Acknowledge and Ignore Interrupt 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 AR Alter Reality ARN Add and Reset to Non-zero ARNZ Add and Reset to Non-Zero ARZ Add and Reset to Zero AS Add Sideways AT Accumulate Trivia AWP Argue With Programmer AWTT Assemble With Tinker Toys AZ Address by Zipcode BAC Branch to Alpha Centauri BAF Blow All Fuses BAFL Branch And FLush BAH Branch And Hang BALC Branch And Link Cheeseburger BAW Bells And Whistles BB Branch on Bug BBBB Byte Baudy Bit and Branch BBBF Branch on Bit Bucket Full BBC Branch Before Compare BBI Branch on Blinking Indicator BBI Branch on Burned-out Indicator BBIL Branch on Burned-out Indicator Light BBL Branch on Burned-out Lamp 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 on Chip box Full BCG Branch on CE Ground BCIL Branch Creating Infinite Loop BCPBR Byte Core; Prune Branch if Rotten BCR Backspace Card Reader BCU Be Cruel and Unusual BCU Burn out CPU BD Backspace Disk BD Beat on Drum BD Branch to Data BDB Branch on Donner or Blitzen BDC Break Down and Cry BDM Branch and Disconnect Memory BDT Burn Data Tree BDT Burn Data Tree [next opcode after decorate data tree] BE Branch Everywhere [As in HHGttG's Infinite Improbability Computer] BEC Bypass Error Check BEW Branch Either Way BF Belch Fire BFF Branch and Form Feed BFM Be Fruitful and Multiply BFSM Bend, Fold, Spindle and Mutilate BH Branch and Hang BIM Branch on Index Missing 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 BM Branch Maybe BMF Blow Main Fuse BMI Branch on Missing Index BMI Branch to Muncee, Immediate BMP Branch and Make Popcorn BMR Branch on Multiple Registers BMY Branch MaYbe BMYR Branch MaYbe Register BNA Branch to Nonexistent Address BNCB Branch Never Come Back BNR Branch for No Reason BO Byte Operator BOB Branch On Bug BOD Beat On the Disk BOD Branch on Operator Desperate BOHP Bribe Operator for Higher Priority BOI Byte Operator Immediately BOP Boot Operator BOP Byte Operator BOPL Burn Out Pilot Lights BOS Branch on Operator Sleepy BOT Branch on Tree BPB Branch on Program Bug BPD Branch if Programmer Debugging BPD Branch on Programmer Debugging BPDI Be Polite and Don't Interrupt BPIM Bury Programmer In Manuals BPL Branch PLease BPM Branch on Phase of Moon BPO Branch if Power Off BPO Branch on Power Off BPO Branch to Power Off BR Byte and Run BRA BRanch Anywhere BRA Branch to Random Address BRI BRanch Indefinitely BRL BRanch and Leak BRO BRanch to Oblivion BRSS BRanch on SunSpot BRT BRanch on Tuesdays BSC Burst Selector Channel BSD BackSpace Disk BSD Branch and Score Disk BSI Backup Sewer Immediate BSM Branch and Scramble Memory BSO Branch on Sleeping Operator BSO Branch on Sleepy Operator BSP BackSpace Punch BSST BackSpace and Stretch Tape BST Backspace and Stretch Tape BTD Branch on Time of Day BTD Byte The Dust BTI Blow Trumpet Immediate BTJ Branch and Turn Japanese BTO Branch To Oblivion BTR Break Tape and Reverse BW Branch on When BW Branch on Whim BWABL Bells, Whistles and Blinking Lights BWF Buzy-Wait Forever BWOP BeWilder OPerator BYDS Beware Your Dark Side BYTE BYte TEst CAC Cash And Carry CAF Convert Ascii to Farsic CAI Corrupt Accounting Information CAIL Crash After I Leave CAT Confused And Tired [UNIX] CB Crash and Burn CBA Compare and Branch Anyway CBBR Crash and Blow Boot ROM CBNC Close, But No Cigar CBS Clobber BootStrap CBS Crash Bothersome Source code CC Call Calvary CC Change Channels CC Compliment Core CC Crappy Control [UNIX] CCB Chocolate Chip Byte-mode CCB Consult Crystal Ball CCC Crash if Carry Clear CCCI Clear Condition-Codes Indefinitely CCCP Conditionally Corrupt Current Process CCD Choke, Cough and Die CCD Clear Core and Dump CCD Clear Current Directory CCR Change Channels 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 CDR Complement Disk Randomly CDS Change Disk Speed CEX Call EXterminator CF Come From (replaces Go To) CFE Call Field Engineer CFM ConFuse Memory CFP Change and Forget Password CFS Corrupt File Structure CFS Corrupt File System CG Convert to Garbage CH Create Havoc CHAPMR CHAse Pointers around Machine Room CHSE Compare Halfwords and Swap if Equal CIB Change Important Byte CID Compare and Ignore Data CIMM Create Imaginary Memory Map CIZ Clear If Zero CLBR CLoBber Register CLBRI CLoBber Register Immediately CLC Clear Low Core (Bytes 0 - 100) CM Circulate Memory CM Confuse Memory CMB Create Machine Bug CMD CPU Melt Down CMD Compare Meaningless Data CMI Clobber Monitor Immediately CML Compute Meaning of Life CML Compute Meaning of Life (72) CMP Create Memory Prosthesis CMS Click MicroSwitch CN Compare Nonsensically CNB Cause Nervous Breakdown CNL Clear Next Location [It has a 0 opcode] CNS Call Nonexistent Subroutine CO Confuse Operator 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) COWHU 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 CPR Complement PRogrammer CR Clobber Register CRASH Continue Running After Stop or Halt CRB CRash and Burn CRD Confirm Rumor by Denial CRM Clear Random Memory CRM Create Memory CRN Compare with Random Number CRN Convert to Roman Numerals CRU ConveRt to Unary CRYPT reCuRsive encrYPt Tape mnemonic [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 [the ultimate in recursive programming] CSYS Crash SYStem CTDMR Change Tape Density, Mid Record 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 CWAH Create Woman And Hold CWB Carry With Borrow CWDC Cut Wires and Drop Cores CWG Chase Wild Goose CWOM Complement Write Only Memory CZZC Convert Zone to Zip Code DA Develop Amnesia DAB Delete All Bugs DAC Divide And Conquer DACFAM Divide All Company Funds Among Programmers DAMIT transfer control to perdition DAO divide and overflow DAP De-select Active Peripheral DAUF Delete All Useless Files [would YOU trust a computer that far?] 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 Coreto Chad box DCD Drop Cards Double DCGC Dump Confusing Garbage to Console DCI Disk Crash Immediate DCON Disable CONsole 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 Daily During Calculations DDC Dump Disk (in hexadecimal) on Console DDOA Drop Dead On Answer DDS Delaminate Disk Surface DDWB Deposit Directly in Wastepaper Basket DEB Disk Eject Both DEC Decompile Executable Code DEC Destroy External Computer DEI Disk Eject Immediate DEM Disk Eject Memory DES Disk Eject Swapped DHTPL Disk Head Three Point Landing DIA Develop Ineffective Address DIC Drop Into Check DIE DIsable Everyting DIIL Disable Interrupts and enter Infinite Loop DIRFW Do It Right For Once DISC DISmount CPU DIY Do It Yourself DK Destroy Klingons DK%WMM Disk Unit - Washing Machine Mode DKP Disavow Knowledge of Programmer DLN Don't Look Now... DLP Drain Literal Pool DM Destroy Memory DMAG Do MAGic DMNS Do what I Mean Not what I Say DMPE Decide to Major in Physical Education DMPK Destroy Memory Protect Key DMZ Divide Memory by Zero DNPG Do Not Pass Go DO Divide and Overflow DOC Drive Operator Crazy DOOM Delete Odd Opcodes Mnemonics DPC Decrement Program Counter DPK Destroy storage Protect Key DPMI Declare Programmer Mentally Incompetent DPN Double Precision No-op DPR Destroy PRogram DPR Distribute Packages Randomly 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 DSPK Destroy Storage Protect Key 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 DTBCD Destroy 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 Work DW Destroy World DWIM Do What I Mean DWIT Do What I'm Thinking EAC Emulate Acoustic Coupler EACM Enable AC current to Memory 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 EC Eject Carriage ECB Eject Chad Box ECL Early Care Lace ECO Electrocute Computer Operator ECP Erase Card Punch ECPM Enable Cattle Prod to Memory ED Eject Disk ED Execute Data ED Expunge Data [UNIX] EDD Eat Disk and Die EDIT Erase Data and Increment Time EDMB Electrocute DP Manager and Branch EDP Emulate Debugged Program EDR Execute Destructive Read EDS Execute Data Segment EEP Erase Entire Program EFB Emulate Five-volt Battery EFD Eject Floppy Disk EFE Emulate Fatal Error EHC Emulate Headless Chicken EIAO Execute In Any Order EIO Erase I/O page EIO Execute Invalid Opcode EIOC Execute Invalid OpCode EIP Execute Programmer Immediately EJD Eject disk EJD%V EJect Disk with initial velocity V ELP Enter Loop Permanently 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 Maytag Washer ENA ENable Anything ENF Emit Noxious Fumes ENO Emulate No-Op EO Electrocute Operator EO Execute Operator EOB Execute Operator and Branch EOI Execute Operator Immediate [a fast version of another instruction] EOI Explode On Interrupt EOP Execute Operator EOS Erase Operating System EP Execute Programmer EP Execute Programmer EPC Erase Punch Cards EPI Execute Programmer Immediate EPI Execute Programmer Immediately 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 ERIC Eject Random Integrated Circuit ERM Erase Reserved Memory EROM Erase Read Only Memory EROS Erase Read Only Storage ESB Eject Selectric Ball [from IBM selectric typewriter terminals] ESC Emulate System Crash ESD Eject Spinning Disk ESL Exceed Speed of Light ESNPR Emergency Stop - No Possible Restart ESP Enable SPrinkler system ESP Execute System Programmer ETC EaT Card ETI Execute This Instruction [for recursive programs] ETM Emulate Trinary Machine EVC Execute Verbal Commands EWD Enter Warp Drive EWD Execute Warp Drive EX EXecute operation EXECP EXECute Programmer EXI EXecute Invalid (operation) EXO EXecute ignorant Operator EXOI EXecute Operator Immediate EXOP EXecute OPerator EXPP EXecute Political Prisoner EXX [A real instruction on the Zilog Z-80 -- Zilog is owned by EXXon] FAY Fetch Amulet of Yendor FB Find Bugs FCJ Feed Card and Jam FD Forget Data FDR Fill Disk Randomly FERA Forms Eject and Run Away FFF Form Feed Forever FLD FLing Disc FLI Flash Lights Impressively FM Forget Memory FMP Finish My Program FOAD Find Other Accumulator and Destroy FOPC [Set] False Out-of-paper Condition FPC Feed Paper Continuously FPT Fire Photon Torpedoes FRG Fill with Random Garbage FSG Fill Screen with Garbage FSM Fold, Spindle and Mutilate FSM Fold, Spindle, and Mutilate FSR Forms Skip and Run away 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 GMCB Generate Machine Check and Bounce GMCC Generate Machine Check and Cash GND Guess at Next Digit GORS GO Real Slow GPE Generate Parity Error GRB Generate Random Bug GREM Generate Random Error Message GREP Global Ruin, Expiration and Purgation [UNIX] GRMC Generate Rubber Machine Check GS Get Strange [randomly inverts bits being fed to the instruction decoder] GSB Gulp and Store Bytes GSI Generate Spurious Interrupts GSU Geometric Shift Up GTJ Go To Jail (do not pass 00000, do not set flags) HACF Halt and Catch Fire [actually exists on some versions of the Motorola 6800 microprocessor, which causes the processor to stop fetching instructions and rapidly increment the address bus, forever] HAH Halt And Hang HCF Halt and Catch Fire HCP Hide Central Processor HCP Hide Central Processor [makes virtual CPU's act like virtual memories] HCRS Hang in CRitical Section HCRS Hang in Critical Section HDO Halt and Disable Operator HDRW Halt and Display Random Word HELP Type "No help available" HF Hide a File HGD Halt, Get Drunk HHB Halt and Hang Bus HIOB Hijack I/O Bus HIS Halt in Impossible 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 HUAL Halt Until After Lunch HUP Hang Up Phone IA Illogical And IAD Illogical AnD IAE Ignore All Exceptions IAI Inquire And Ignore IAND Illogical And IBM Illegal Bit Manuever 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 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 IEOF Ignore End Of File IF Invoke Force IFOR Initialize Fake Out Routine IGI Increment Grade Immediately IGIT Increment Grade Immediately Twice II Inquire and Ignore IIB Ignore Inquiry and Branch IIB Ignore Interrupt 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 IMPG IMPress Girlfriend IMV IMpress Visitors INCAM INCrement Arbitrary Memory (location) INI Ignore Next Instruction INOP Indirect No-OP INR INstigate Rumor IOI Ignore Operator's Instruction IOP Interrupt and Order Pizza IOR Illogical OR IP Increment and Pray IPI Ignore Previous Instruction IPM Ignore Programmer's Mistakes IPS Incinerate Power Supply IPS Increment Power Supply IPS Increment Processor Status IPT Ignite Paper Tape IRB Invert Record and Branch IRBI Insert Random Bits Indexed IRC Insert Random Commands IRE Insert Random Errors IRPF Infinite Recursive Page Fault ISC Ignore Supervisor Calls ISC Ignore System Crash ISC Insert Sarcastic Comments ISI Increment and Skip on Infinity ISP Increment and Skip on Pi ISTK Invert Stack ITML Initiate Termites into Macro Library ITT Ignore Telephone Ties IU Ignore User JAA Jump Almost Always JBS Jump and Blow Stack JC Jam Card punch JCI Jump to Current Instruction JFFZ Jump if Find First Zero JFM Jump on Full Moon JHRB Jump to H&R Block JK Jam Keypunch JLP Jump and Lose Pointer JMAT JuMp on Alternate Thursdays JMF Jump if Moon is Full JN Jump to Nowhere JNL Jump when programmer is Not Looking JOM Jump Over Moon JOP Jump on OPerator JPA Jump when Pizza Arrives JRAN Jump RANdom [not to be confused with IRAN - Idiots RANdom] JRCF Jump Relative and Catch Fire JRGA Jump Relative and Get Arrested JRL Jump to Random Location JRN Jump RaNdom JRSR Jump to Random Subroutine JSC Jump on System Crash JSU Jump Self Unconditional [the ultimate in iterative programming] JT Jump if Tuesday JTT Jump and Tangle Tape JTZ Jump to Twilight Zone JWN Jump When Necessary KCE Kill Consultant on Error 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) LC Loop Continuously LCC Load and Clear Core LCD Launch Cartidge Disk LCD Load and Clear 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 [UNIX] LNP Load N digits of PI LO Load Operator 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 LRA Load RetroActively LRD Load Random Data LSBL Lose Super BLock [UNIX only] LSD Lose Significant Digits LSPSW Load and Scramble PSW LUM LUbricate Memory LWE Load What-Ever LWM Load Write-only Memory LWOM Load Write-Only Memory MAB Logical maybe 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 Holdup MBOL Move Bug to Operator's Lunch MBR Multiply and Be Fruitful MBTD Mount Beatles on Tape Drive MBTOL Move Bugs 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 Memory Left Shift and Branch MLR Move and Lose Record MLSB Memory Left Shift and Branch MMF Melt MainFrame 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 once again] MPLP Make Pretty Light Pattern MRZ Make Random Zap MSF Make Silly Face MSGD Make Screen Go Dim MSIP Make Sure Plugged In MSLB Memory Shift Left and Branch MSR Melt Special Register MST Mount Scotch Tape MT%HRDV MagTape - High speed Rewind and Drop Vacuum MTI Make Tape Invalid MTS Move to Tape Stretcher MVLMR MoVe and Lose Machine Room MVLR MoVe and Lose Record MW Malfunction Whatever MW Malfunction Whenever MW Multiply Work MWAG Make Wild-Assed Guess MWC Move and Warp Core MWC Move and Wrap Core MWK Multiply WorK MWT Malfunction Without Telling NBC Negate by Clearing NPC Normalize Program Counter NTGH Not Tonight, i've Got a Headache OCF Open Circular File OESD On Error Self Destruct OML Obey Murphy's Law OML Obey Murphy's Laws OPP Order Pizza for Programmer ORSD On Read error Self Destruct OSI Overflow Stack Indefinitely OTL Out To Lunch PAS Print And Smear PAS Punch in ASCII PAUD PAUse Dramatically PAZ Pack Alpha Zone PBC Print and Break Chain PBD Print and Break Drum PBM Pop Bubble Memory PBN Play Beethoven's Ninth PBPBPBP Place Backup in Plain Brown Paper Bag, Please [for stealing code] PBS Pop Before Stacking PBST Play Batch mode Star Trek PCI Pleat Cards Immediate PCR Print and Cut Ribbon PCR Punch Card Reader PD Play Dead PD Punch Disk PDI Punch Disk Immediately PDK Punch DisK PDLD Power Down and Lock Door (to computer room) PDP Pop Disk Pack PDSK Punch DiSK PEB Punch in EBCDIC PEHC Punch Extra Holes in Cards PEP Print on Edge of Paper PF Punch, Fruit PFD Punt on Fourth Down PFE Print Floating Eye [Roguers look out!] PFML Print Four Million Lines PI Punch Invalid PIBM Pretend to be an IBM PIC Print Illegible Characters PIC Punch Invalid Character PL Prune Leaf (from Binary Tree) PLSC Perform Light Show on Console PM Punch in Morse code PNRP Print Nasty Replies to Programmer PO Punch Operator POCL Punch Out Console Lights POF Print On Fly POI Punch Operator Immediately 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 PR78 Play Record (78 RPM Compatability) PRS PRint and Smear PS Print and Smear PS Punch in Semaphore PSD Pause and Smoke Dope PSM Print and SMear PSP Print and Shred Paper PSP Push Stack Pointer PSR Print and Shred Ribbon PT Punch Tape PTP Produce Toilet Paper 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 QWA Quit While Ahead RA Randomize Answer RAM Rationally abort monitor RAM Read Ambiguous Memory RAM Reorganize and Abort Monitor RAN Random Opcode [similar to a 16-bit what gate] RASC Read And Shred Card RASC Read and Shred Card RAST Read and Shred Tape RAST Rewind And Stretch Tape RAU Ridicule All Users RBAG Random Branch Address Generator RBAO Ring Bell and Annoy Operator RBB Read from the Bit Bucket RBF Read Binary and Forget RBG Random Bug Generate RBG Random Bug Generation RBLY Restore Backup from Last Year RBT Read Blank Tape RBT Read and Break Tape RBT Rewind and Break Tape RC Read Chaos RC Rewind Core RCA Return Correct Answer RCAJ Read Card And Jam RCB Read Chad Box RCB Read Command Backwards RCB Read Commands 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 Read Card Punch RCR Rewind Card Reader RCRV Randomly Convert to Reverse Video RCS Read Card, Scramble data RCSD Read Card and Scramble Data RD Randomize Data RD Reverse Directions RDA Refuse to Disclose Answer RDB Run Disk Backwards RDD Reverse Disk Drive RDDI Reverse Disk Drive Immediate RDEB Read and Drop an Even number of Bits [thereby preserving parity] RDF Randomize Directory Filenames RDI Reverse Disk Immediate RDI Reverse Drum Immediate RDK Reverse DisK RDKI Reverse DisK Immediate RDR Reverse Disk Rotation (Read data in reverse) RDS ReaD Sideways REF REad Fingerprints REG REcord Garbadge RENVR Rename Variables Randomly RET Read and Erase Tape RF Read Fingerprints RF Rewind Forward RFSC Read, Feed, and Shred Card RG Record Garbage RH0 Randomize and Halt if not equal to 0 RIC Rotate Illogical thru Carry RID Read Invalid Data RIG Read Interrecord Gap RIODN Rotate I/O Device Numbers RIOS Read In-Only Storage RIR Read Invalid Record RIRG Read Inter-Record Gap RIRG Rewrite Inter-Record Gap [random replacement of similar mnemonic] RLC Re-read Last Card 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 RLR Rotate Left Randomly RM Reinitialize Meter RM Ruin My files [UNIX] 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 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 Op System ROS Return On Shield ROT Rotate Disk [fixes broken drives] 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 RPI Reverse Priority of Interrupts RPL Read Plotter RPM Read Programmer's Mind RPU Read character and Print Upside down RPW Route Print out to Wastebasket RRB Read Record and Blush 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 RRSG Round and Round She Goes... RRT Record and Rip Tape RRT Rewind and Rip Tape RS Random Slew RS Read Sideways RSC Read and Shred Card RSD Read and Scramble Data RSD Read and Shuffle Deck RST Rewind and Stretch Tape RSTOM Read From Store-Only Memory RT Reduce Throughput RT Reduce Thruput RT Reverse Throughput RTHO Ring Telephone of Head of Operations (After Midnight Only) RTP Reduce ThroughPut RTR Refuse To Run RTS Return To Sender RVAC Return from VACation RWBT Rewind and Break Tape RWCR Rewind CaRd Reader RWD ReWind Disk RWF Read Wrong File RWRT Read, Write, and Rip Tape RWS Return With Shield SAC Scramble All Channels SAD Search and destroy SAD Seek And Destroy SAI Skip All Instructions SAP Staple And Punch SAS Sit And Spin SB Shift a Bit 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 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 SD Snare Drum SDAT Scatter Data SDC Spool Disk to Console SDD Seek and Destroy Data SDDB Snap Disk Drive Belt SDE Solve Differential Equations SDI Self Destruct Immediately SDK Slip Disk SDM Search and Destroy Memory SDR Slam Down Rondo [Rondo is the worst soda ever created. The macho commercials told you of how "Rondo's lightly carbonated, so you can slam it down fast.] SDS Spool DiSk (to Console) SEB Stop Eating and Burp SEOB Set Every Other Bit SETS SET to Self SEX Set EXecution register [a real instruction for the RCA 1802] SEX Sign EXtend SFH Set Flags to Half mast SFH Set Flags to Half-mast SFLT Solve Fermat's Last Theorem 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 SIPA Sinking Point Arithmetic SLD Slip Disk SLP Sharpen Light Pen SLPA Sliding Point Arithmetic SM Scatter Memory SMC Scatter Multiplexor Channel SMC Scramble memory contents SMD Spontaneous Memory Dump (Use only with classified data) SMR Skip on Meaningless Result SMS Shred Mylar Surface SMT Stretch MagTape SNARF System Normalize And Reset Flags SNM Show No Mercy SOAWP SOlve All the World's Problems SOB [a real PDP-11 instruction] SOD Surrender Or Die! SOP Stop and Order Pizza SOS Sign Off, Stupid SOS Sign off, Stupid SOT Sit On a Tack SP Scatter Print SP Staple and Punch SPA Sliding Point Arithmetic SPC Staple and Punch new Center hole SPD Shuffle Program Deck SPDD Spin Dry Disk SPO Skip if Power Off SPS Set Panel Switches SPS Short power supply SPS Smoke Power Supply SPSW Scramble Processor Status Word SPSW Scramble Program Status Word SQPC Sit Quietly and Play with Crayons SRBO Set Random Bits to Ones SRBZ Set Random Bits to Zeroes SRC Select Reader and Chew cards SRC Short Rinse Cycle SRC Skip to Random Channel SRCC Select Reader and Chew Cards SRD Switch to Random Density SRDR Shift Right Double Ridiculous SRDR Shift Right, Double Ridiculous SRNZ Subtract and Reset to Non-Zero SRO Sort with Random Ordering SROS Store in Read Only Storage SRR Set Registers to Random values [usually used prior to a RET or RTS] SRR Shift Registers Random SRSD Seek Record and Scar Disk SRSD Seek Record and Scratch Disk SRSZ Seek Record and Scar 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 SSD Seek and Score Disk [good for testing] SSD Seek and Scratch Disk SSD Stacker Select Disk SSJ Select Stacker and Jam SSJ Select Stacker and Jump 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 ST Set and Test ST Stretch Tape STA STore Anywhere STC Slow To a Crawl STD Stop, Take Drugs STM STretch Magtape STM Skip on Third Monday STMLMD Skip To My Lou, My Darlin' STO Strangle Tape Operator STPR SToP Rain STROM STore in Read-Only Memory STTHB Set Terminal to Three Hundred Baud SUI Subtract User's IQ SUME Surprise Me SUP Solve Unsolvable Problem SUR Screw Up Royally SUS Stop Until Spring SUS Subract Until Senseless SWAR SpaceWAR in one instruction SWAT SWAp Terminals SWN SWap Nibbles SWOM Store on Write Only Memory SWOS SWap out Operating System 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 TARC Take Arithmetic Review Course TBFTG Two Burgers and Fries To Go TC Transmit Colors (but avoid red) TCD TRansfer Control to Disk TCOL Transfer Control to Overhead Lights TCPL Transfer Control to Pilot Lights TCR Transmit Colors (but avoid Red) TCWS Transfer Control to Wall Socket TDB Transfer and Drop Bits TDRB Test and Destroy Random Bits TDS Trash Data Segment 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 TPC Turn on Pleasure Circuit TPD Triple Pack Decimal TPD Triple-Pack Decimal TPDH Tell Programmer to Do it Himself/Herself TPF Turn Power Off TPN Turn Power oN TPO Turn Power Off 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%CNK TeleType - Clunk Noise TT%EKB Electrify keyboard TT%EKB TeleType - Electrify KeyBoard TTA Try, Try Again TTITT Turn 2400 foot Tape Into Two 1200 foot Tapes TTL Tap Trunk Line TTL Time To Log off TYF Trust your feelings UAI Use Alternate Instruction set UCB Uncouple CPUs and Branch UCB Uncouple Communication lines and Break 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 UP Understand Program(mer) UPA Use all Power Available UPC Understand Programmer'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 VL Virtueless Memory VMA Violate Maintenance Agreement VNO Violate Noise Ordinance VPA Vanishing Point Arithmetic VVM Vaporise Virtual Memory WAD Walk Away in Disgust WAT WAste Time WBB write to the Bit Bucket WBT Water Binary Tree WC Waste Core [UNIX] WCKG Write Count Key and Giggle WCR Write to Card Reader WDEG Withdraw Disk arm with Erase Gap on 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 Problem WHR Write Hit Record WI Why Immediate WI Write Illegibly WID Write Invalid Data WMTE Wrap Memory Transfer Erase WNHR Write New Hit Record WNR Write Noise Record WPET Write Past End of Tape WPF Write to Protected Files WPM Write Programmer's Mind WQT Write Quadrophonic Tape WSE Write Stack Everywhere WSWW Work in Strange and Wondrous Ways WUPO Wad Up Printer Output WWLR Write Wrong Length Record WWLR Write Wrong-Length Record WWR Write Wrong Record XIO Execute Invalid Opcode XKF Execute Kermit the Frog XMB Exclusive MayBe XNH eXecute No-op and Hang XOH Execute no-Op and Hang XOI Execute Operator Immediate 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 ZAP Zero and Add Packed ZAR Zero Any Register ZD Zap Directory ZEOW Zero Every Other Word ZPI ZaP Immediate ============== Cut here ==============