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----------------------------------------------------------------
|                                                              |
|                                                              |
|                Digital Equipment Corporation                 |
|                                                              |
|                   TTTTTTT       1     1                      |
|                      T         11    11                      |
|                      T          1     1                      |
|                      T    XXX   1     1                      |
|                      T          1     1                      |
|                      T          1     1                      |
|                      T         111   111                     |
|                                                              |
|         T-11 MICROPROCESSOR Instruction Set Summary          |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                    _________    _________                    |
|                  _|         \__/         |_                  |
|      <--> DAL15 |_|1                   40|_| Vcc <--         |
|                  _|                      |_                  |
|      <--> DAL14 |_|2                   39|_| AI7 <-->        |
|                  _|                      |_                  |
|      <--> DAL13 |_|3                   38|_| AI6 <-->        |
|                  _|                      |_                  |
|      <--> DAL12 |_|4                   37|_| AI5 <-->        |
|                  _|                      |_                  |
|      <--> DAL11 |_|5                   36|_| AI4 <-->        |
|                  _|                      |_                  |
|      <--> DAL10 |_|6                   35|_| AI3 <-->        |
|                  _|                      |_                  |
|       <--> DAL9 |_|7                   34|_| AI2 <-->        |
|                  _|                      |_                  |
|        --> BGND |_|8                   33|_| AI1 <-->        |
|                  _|                      |_                  |
|       <--> DAL8 |_|9                   32|_| AI0 <-->        |
|                  _|                      |_                  |
|       <--> DAL7 |_|10     DCT11-AA     31|_| PI -->          |
|                  _|                      |_  ___             |
|       <--> DAL6 |_|11                  30|_| CAS -->         |
|                  _|                      |_  ___             |
|       <--> DAL5 |_|12                  29|_| RAS -->         |
|                  _|                      |_    _             |
|       <--> DAL4 |_|13                  28|_| R/WLB -->       |
|                  _|                      |_    _             |
|       <--> DAL3 |_|14                  27|_| R/WHB -->       |
|                  _|                      |_                  |
|       <--> DAL2 |_|15                  26|_| READY <--       |
|                  _|                      |_                  |
|       <--> DAL1 |_|16                  25|_| SEL0 -->        |
|                  _|                      |_                  |
|       <--> DAL0 |_|17                  24|_| SEL1 -->        |
|            ____  _|                      |_                  |
|        <-- BCLR |_|18                  23|_| XTL0 -->        |
|                  _|                      |_                  |
|         --> PUP |_|19                  22|_| XTL1 <-->       |
|                  _|                      |_                  |
|         --> GND |_|20                  21|_| COUT -->        |
|                   |______________________|                   |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|Written by     Jonathan Bowen                                 |
|               Programming Research Group                     |
|               Oxford University Computing Laboratory         |
|               8-11 Keble Road                                |
|               Oxford OX1 3QD                                 |
|               England                                        |
|                                                              |
|               Tel +44-865-273840                             |
|                                                              |
|Created        May 1983                                       |
|Updated        April 1985                                     |
|Issue          1.1                Copyright (C) J.P.Bowen 1985|
----------------------------------------------------------------
----------------------------------------------------------------
|Mnemonic |Opcode|NZVC|Description               |Notes        |
|---------+------+----+--------------------------+-------------|
|ADCb d   |B055DD|****|Add Carry                 |d=d+C        |
|ADD  s,d |06SSDD|****|Add                       |d=s+d        |
|ASLb d   |B063DD|****|Arithmetic Shift Left     |d=d*2        |
|ASRb d   |B062DD|****|Arithmetic Shift Right    |d=d/2        |
|BCC  a   |1030XX|----|Branch if Carry Clear     |If C=0       |
|BCS  a   |1034XX|----|Branch if Carry Set       |If C=1       |
|BEQ  a   |0014XX|----|Branch if Equal           |If Z=0       |
|BGE  a   |0020XX|----|Branch if Greater or Equal|If NxV=0     |
|BGT  a   |0030XX|----|Branch if Greater Than    |If Zv{NxV}=0 |
|BICb s,d |B4SSDD|**0-|Bit Clear                 |d=d&{~s}     |
|BISb s,d |B5SSDD|**0-|Bit Set (OR)              |d=dvs        |
|BITb s,d |B3SSDD|**0-|Bit Test (AND)            |d&s          |
|BHI  a   |1010XX|----|Branch if Higher          |If CvZ=0     |
|BHIS a   |1030XX|----|Branch if Higher or Same  |If C=0       |
|BLE  a   |0034XX|----|Branch if Less or Equal   |If Zv{NxV}=1 |
|BLT  a   |0024XX|----|Branch if Less Than       |If NxV=1     |
|BLO  a   |1034XX|----|Branch if Lower           |If C=1       |
|BLOS a   |1014XX|----|Branch if Lower or Same   |If CvZ=1     |
|BMI  a   |1004XX|----|Branch if Minus           |If N=1       |
|BNE  a   |0010XX|----|Branch if Not Equal       |If Z=1       |
|BPL  a   |1000XX|----|Branch if Plus            |If N=0       |
|BPT      |000003|----|Breakpoint Trap           |Vector at 14 |
|BR   a   |0004XX|----|Branch                    |PC=PC+2*XX   |
|BVC  a   |1020XX|----|Branch if Overflow Clear  |If V=0       |
|BVS  a   |1024XX|----|Branch if Overflow Set    |If V=1       |
|CALL d   |0047DD|----|Call subroutine           | (= JSR PC,d)|
|CCC      |000257|0000|Clear all Condition Codes |{C,N,V,Z}=0  |
|CLC      |000241|---0|Clear Carry               |C=0          |
|CLN      |000250|0---|Clear Negative            |N=0          |
|CLRb d   |B050DD|0100|Clear                     |d=0          |
|CLV      |000242|--0-|Clear Overflow            |V=0          |
|CLZ      |000244|-0--|Clear Zero                |Z=0          |
|CMPb s,d |B2SSDD|****|Compare                   |s-d          |
|COMb d   |B051DD|**01|Complement                |d=~d         |
|DECb d   |B053DD|***-|Decrement                 |d=d-1        |
|EMT  t   |1040TT|----|Emulator Trap             |Vector at 30 |
|HALT     |000000|----|Halt                      |             |
|INCb d   |B052DD|***-|Increment                 |d=d+1        |
|IOT      |000004|----|Input/Output Trap         |Vector at 20 |
|JMP  d   |0001DD|----|Jump                      |PC=d         |
|JSR  r,d |004RDD|----|Jump to Subroutine        |r=PC,PC=d    |
|MFPS d   |1067DD|**0-|Move From Processor Status|d=PS   (byte)|
|MOVb s,d |B1SSDD|**0-|Move                      |d=s          |
|MTPS s   |1064SS|****|Move To Processor Status  |PS=s   (byte)|
|NEGb d   |B054DD|****|Negate                    |d=-d         |
|NOP      |000240|----|No Operation              |             |
|RESET    |000005|----|Reset external bus        |             |
|RETURN   |000207|----|Return from subroutine    |   (= RTS PC)|
|ROLb d   |B061DD|****|Rotate Left               |d={C,d}<-    |
|RORb d   |B060DD|****|Rotate Right              |d=->{C,d}    |
|RTI      |000002|----|Return from Interrupt     |{PC,PS}=(SP)+|
|RTS  r   |00020R|----|Return from Subroutine    |PC=r,r=(SP)+ |
|RTT      |000006|----|Return from interrupt     |Inhibit T-bit|
|SBCb d   |B056DD|****|Subtract Carry            |d=d-C        |
|SCC      |000277|1111|Set all Condition Codes   |{C,N,V,Z}=1  |
|SEC      |000261|---1|Set Carry                 |C=1          |
|SEN      |000270|1---|Set Negative              |N=1          |
|SEV      |000262|--1-|Set Overflow              |V=1          |
|SEZ      |000264|-1--|Set Zero                  |Z=1          |
|SOB  r,a |077RNN|----|Subtract One and Branch   |PC=PC-2*NN   |
|SUB  s,d |16SSDD|****|Subtract                  |d=d-s        |
|SWAB d   |0003DD|**00|Swap Bytes                |             |
|SXT  d   |0067DD|-*0-|Sign Extend               |d=0 or -1    |
|TRAP t   |1044TT|----|Trap                      |Vector at 34 |
|TSTb d   |B055DD|**00|Test                      |d            |
|WAIT     |000001|----|Wait for interrupt        |             |
|XOR  r,d |074RDD|**0-|Exclusive OR              |d=dxr        |
|---------+------+----+----------------------------------------|
|         |     B|    |0 for word, 1 for byte (1 bit)          |
|         |    DD|    |Destination field (6 bits)              |
|         |     N|    |Number (3 bits)                         |
|         |    NN|    |Number (6 bits)                         |
|         |     R|    |Register (3 bits, R0-5/SP/PC)           |
|         |    SS|    |Source field (6 bits)                   |
|         |    TT|    |Number (8 bits)                         |
|         |    XX|    |Offset (8 bits, -128 to +127)           |
----------------------------------------------------------------
----------------------------------------------------------------
|Mnemonic        |NZVC|Description                             |
|----------------+----+----------------------------------------|
| PSW            |-*01|Flag unaffected/affected/reset/set      |
|                |    |Priority interrupt (Bit 7)              |
| T              |    |Trace trap (Bit 4)                      |
| N              |N   |Negative (Bit 3)                        |
| Z              | Z  |Zero (Bit 2)                            |
| V              |  V |Overflow (Bit 1)                        |
| C              |   C|Carry (Bit 0)                           |
|---------------------+----------------------------------------|
| r                   |Register (mode 0)                       |
| (r)                 |Register deferred (mode 1)              |
| @r                  | ditto                                  |
| (r)+                |Auto-increment (mode 2)                 |
| @(r)+               |Auto-increment deferred (mode 3)        |
| -(r)                |Auto-decrement (mode 4)                 |
| @-(r)               |Auto-decrement deferred (mode 5)        |
| nn(r)               |Index (mode 6)                          |
| @nn(r)              |Index deferred (mode 7)                 |
| #nn                 |Immediate (mode 2, r=PC)                |
| @#nn                |Absolute (mode 3, r=PC)                 |
| nn                  |Relative (mode 6, r=PC)                 |
| @nn                 |Relative deferred (mode 7, r=PC)        |
|---------------------+----------------------------------------|
| Rn                  |General purpose Register (16-bit, n=0-5)|
| SP                  |Stack Pointer (16-bit, R6)              |
| PC                  |Program Counter (16-bit, R7)            |
| PS                  |Processor Status (16-bit)               |
|---------------------+----------------------------------------|
| a                   |Relative address                        |
| b                   |Blank or B for word or byte operand(s)  |
| d                   |Destination                             |
| n                   |Register Number (0 to 5)                |
| nn                  |16-bit expression (0 to 65535)          |
| r                   |Register (Rn,SP,PC)                     |
| s                   |Source                                  |
| t                   |Trap number                             |
| +                   |Arithmetic addition                     |
| -                   |Arithmetic subtraction                  |
| *                   |Arithmetic multipication                |
| /                   |Arithmetic division                     |
| ^                   |Arithmetic exponent                     |
| &                   |Logical AND                             |
| ~                   |Logical NOT                             |
| v                   |Logical inclusive OR                    |
| x                   |Logical exclusive OR                    |
| <-                  |Rotate left                             |
| ->                  |Rotate right                            |
| { }                 |Combination of operands                 |
| -->                 |Input pin                               |
| <--                 |Output pin                              |
| <-->                |Input/output pin                        |
|---------------------+----------------------------------------|
| DEC                 |Digital Equipment Corporation           |
| PSW                 |Processor Status Word                   |
|---------------------+----------------------------------------|
| 000                 |Reserved vector                         |
| 004                 |Time-out/system error vector            |
| 010                 |Illegal and reserved instruction vector |
| 014                 |BPT instruction vector                  |
| 020                 |IOT instruction vector                  |
| 024                 |Power fail vector                       |
| 030                 |EMT instruction vector                  |
| 034                 |TRAP instruction vector                 |
| 060                 |Console input device vector             |
| 064                 |Console output device vector            |
| 100                 |External event line interrupt vector    |
| 160000-177776       |Device addresses                        |
|--------------------------------------------------------------|
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
----------------------------------------------------------------


 


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