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- American Gumby Corporation
- 1009 Mercaptan Road
- Epstein-Barr, NJ 11235
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- New Product Announcement: 7903 MPU with Enhanced Instruction Set
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- The new 7903 MPU provides a plug-in upgrade for systems currently using the
- 6502 microprocessor. The 7903 is fully pin-compatible and software
- upward-compatible with the 6502. Additionally, many of the formerly unused
- opcodes are used to provide an enhanced instruction set providing features
- normally found only on much larger systems. The new instructions are listed
- below.
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- BBI Branch on Blinking Indicator MET Misread and Eat Tape
- BH Branch and Hang PTAB Position Tape Ass-Backwards
- BCBF Branch on Chip Box Full STT Stretch and Tangle Tape
- BPO Branch on Power Off ST Scratch Tape
- BSO Branch on Sleepy Operator SRSD Seek Record and Scar Disk
- IIB Ignore Inquiry and Branch RD Rewind Disk
- RPB Reverse Parity and Branch BD Backspace Disk
- BCH Branch on CPU Halted ED Eject Disk
- BTAD Branch To Auto Destruct TD Throw Disk
- JRL Jump to Random Location LCD Launch Cartridge Disk
- JSP Jump on Sexy Programmer FD Flip Disk
- FAG Fold And Go DF Disk Feed
- AI Add Improper UER Update and Erase Record
- DO Divide and Overflow CVU ConVert to Unary
- DC Divide and Conquer CVS ConVert to Sesquinary
- SRZ Subtract and Reset to Zero CRN Convert to Roman Numerals
- ARZ Add and Reset to Zero WRTC Wind Real-Time Clock
- XM Exclusive Maybe WWTC Wind Wrong-Time Clock
- PAII Prevent All Interrupts and PCB Pause for Coffee Break
- Interrupt SPD Start and Power Down
- PI Punch Invalid PDN Power Down and Normalize
- RI Read Invalid EBQR Enable Bi-Quinary Arithmetic
- RCSD Read Card and Scramble Data LCC Load and Clear Core
- RCR Rewind Card Reader EROS Erase Read-Only Store
- RASC Read and Shred Card RWOM Read Write-Only Memory
- BCR Backspace Card Reader WROM Write Read-Only Memory
- BCP Backspace Card Punch FCE Fill Core with Epoxy
- RCI Read Card and Ignore DMPK Destroy Memory Protect Key
- RCS Read Card Sideways UC Unwind Core
- SSJ Select Stacker and Jam BPP Blob Plotter Pen
- RP Read Printer MPS Move Pen Somewhere
- FSRA Forms Skip and Run Away DPMD Drop Pen and Mangle Drum
- BSP Backspace Printer APX Apply Power and Explode
- PBC Print and Break Chain HCF Halt and Catch Fire
- TDB Transfer and Drop Bits CCP Clear Core and Proceed
- MDB Move and Drop Bits CCCP Conditionally Clear Core and
- MLR Move and Lose Record Proceed
- MWC Move and Wrap Core EIOC Execute Invalid Op Code
- MC Move Continuous EPI Execute Programmer
- CM Circulate Memory Immediate
- WWLR Write Wrong Length Record SPSW Scramble Program Status
- RNR Read Noise Record Word
- RIRG Read Inter-Record Gap ERAF Execute Relocatable Address
- REOF Read End-Of-File Field
- BST Backspace and Streach Tape EPSW Execute Program Status Word
- RBT Rewind and Break Tape EM EMulate 407
- MTI Make Tape Invalid SSN Set Serial Number
- PMT Punch Magnetic Tape STI STore Immediate
- PDT Punch and Delete Tape PSP Push Stack Pointer
- SD Slip Disk ILA Illogical AND
- RT Reverse Trend ILO Illogical OR
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