----------------------------------------------------------------
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| Zilog |
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| ZZZZZZZ 88888 000 000 000 |
| Z 8 8 0 0 0 0 0 0 |
| Z 8 8 0 0 0 0 0 0 0 0 0 |
| Z 88888 0 0 0 0 0 0 0 0 0 |
| Z 8 8 0 0 0 0 0 0 0 0 0 |
| Z 8 8 0 0 0 0 0 0 |
| ZZZZZZZ 88888 000 000 000 |
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| Z8001/Z8002 MICROPROCESSOR Instruction Set Summary |
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| XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXX X |
| XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXX XX |
| XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXX XXXX |
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| XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXX XXXXXXXX |
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| XXXXXXXXX XXXXXXXXX XXXXXXXXXXXXXXXX |
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| XXXXX XXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
| XXX XXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
| X XXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX |
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| XXXXXXXXXXXXXXX XXX XXXXX |
| XXXXXXXXXXXXXXX XXX XXXXX |
| XXX XXXX XXX |
| XXXX XXXXXX XXX XXXXXXX XXXXXX XX |
| XXXX XXXXXX XXX XXXXXXXXXXX XXXXXXXXXXXXX |
| XXXX XXX XXX XXXX XXXX XXXX XXXX |
| XXXX XXX XXX XXX XXX XXX XXX |
| XXXX XXX XXX XXX XXXX XXXX XXXX XXXX |
| XXXXXXXXXXXXXXX XXXXXXXX XXXXXXX XXXXXXXXXXX XXXXXXXXXXXX |
| XXXXXXXXXXXXXXX XXXXXXXX XXXXXXX XXXXXXX XXXXXX XXX |
| XXX |
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|Written by Jonathan Bowen |
| Programming Research Group |
| Oxford University Computing Laboratory |
| 8-11 Keble Road |
| Oxford OX1 3QD |
| England |
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| Tel +44-865-273840 |
| |
|Created October 1981 |
|Updated April 1985 |
|Issue 1.2 Copyright (C) J.P.Bowen 1985|
----------------------------------------------------------------
----------------------------------------------------------------
|Mnemonic |CZSPDH|Description |Notes |
|------------+------+----------------------------+-------------|
|ADCb d,s |****bb|Add with Carry |d=d+s+C |
|ADDa d,s |****bb|Add |d=d+s |
|ANDb d,s |-**b--|Logical AND |d=d&s |
|BITb d,s |-*----|Bit Test |Z=~d<s> |
|CALL d |------|Call |-[SP]=PC,PC=d|
|CALR d |------|Call Relative |-[SP]=PC,PC=d|
|CLRb d |------|Clear |d=0 |
|COMb d |-**b--|Complement |d=~d |
|COMFLG f |++++--|Complement Flag |f=~f |
|CPa d,s |****--|Compare |d-s |
|CPDb d,s,c|?*?*--|Compare and Decrement |d-s,r=r-1 |
|CPDRb d,s,c|?*?*--|Compare, Decrement and Rept |CPD till r=0 |
|CPIb d,s,c|?*?*--|Compare and Increment |d-s,r=r+1 |
|CPIRb d,s,c|?*?*--|Compare, Increment and Rept |CPI till r=0 |
|CPSDb d,s,c|?*?*--|Compare String and Decrement|d-s,r=r-1 |
|CPSDRb d,s,c|?*?*--|Compare String, Dec. and Rep|CPSD till r=0|
|CPSIb d,s,c|?*?*--|Compare String and Increment|d-s,r=r+1 |
|CPSIRb d,s,c|?*?*--|Compare String, Inc. and Rep|CPSI till r=0|
|DAB d |***---|Decimal Adjust Byte |d=BCD format |
|DECb d,s |-***--|Decrement (s=1-16) |d=d-s |
|DI i |------|Disable Interrupts | #|
|DIVl d,s |****--|Divide |d=d/s |
|DbJNZ r,d |------|Decrement & Jump if Not Zero|r=r-1 |
|EI i |------|Enable Interrupts | #|
|EXb d,s |------|Exchange |d<->s |
|EXTSa d |------|Extend Signs | |
|HALT |------|Halt | #|
|pINb d,s |------|(Special) Input |d=s #|
|INCb d,s |-***--|Increment (s=1-16) |d=d+s |
|pINDb d,s,r|---*--|(Special) Input and Dec. |d=s,r=r-1 #|
|pINDRb d,s,r|---1--|(Special) Input, Dec. & Rept|IND till r-0#|
|pINIb d,s,r|---*--|(Special) Input and Inc. |d=s,r=r+1 #|
|pINIRb d,s,r|---1--|(Special) Input, Inc. & Rept|INI till r=0#|
|IRET |??????|Interrupt Return |PS=[SP]+ #|
|JP cc,d |------|Jump |PC=d |
|JR cc,d |------|Jump Relative |PC=d |
|LDa d,s |------|Load |d=s |
|LDA d,s |------|Load Address |d=EAs |
|LDAR d,s |------|Load Address Relative |d=EAs |
|LDCTL d,s |++++++|Load Control |d=s #|
|LDCTLB d,s |++++++|Load Control Byte |d=s |
|LDDb d,s,r|---*--|Load and Decrement |d=s,r=r-1 |
|LDDRb d,s,r|---1--|Load, Decrement and Repeat |LDD till r=0 |
|LDIb d,s,r|---*--|Load and Increment |d=s,r=r+1 |
|LDIRb d,s,r|---1--|Load, Increment and Repeat |LDI till r=0 |
|LDK d,s |------|Load Constant (s=0-15) |d=s |
|LDM d,s,n|------|Load Multiple (n=1-16) |d=s (n words)|
|LDPS s |??????|Load Program Status |PS=s #|
|LDRa d,s |------|Load Relative |d=s |
|MBIT |??*???|Multi-Micro Bit Test |S=~MI pin #|
|MREQ d |-**---|Multi-Micro Request |S=available #|
|MRES |------|Multi-Micro Reset |~MI=high #|
|MSET |------|Multi-Micro Set |~MO=low #|
|MULTl d,s |***0--|Multiply |d=d*s |
|NEGb d |****--|Negate |d=-d |
|NOP |------|No Operation | |
|ORb d,s |-**b--|Logical inclusive OR |d=dvs |
|pOTDRb d,s,r|---1--|(Special) Output, Dec. & Rep|OTD till r=0#|
|pOTIRb d,s,r|---1--|(Special) Output, Inc. & Rep|OTI till r=0#|
|pOUTb d,s |------|(Special) Output |d=s #|
|pOUTDb d,s,r|---*--|(Special) Output and Dec. |d=s,r=r=1 #|
|pOUTIb d,s,r|---*--|(Special) Output and Inc. |d=s,r=r+1 #|
|POPl d,s |------|Pop |d=s,[EAs]+ |
|PUSHl d,s |------|Push |-[EAs],d=s |
|RESb d,s |------|Reset Bit |d<s>=0 |
|RESFLG f |++++--|Reset Flag |f=0 |
|RET cc |------|Return |PC=[SP]+ |
|RLb d,s |****--|Rotate Left |d=d<-s |
|RLCb d,s |****--|Rotate Left through Carry |d={C,d}<-s |
|RLDB ll,s |-*?---|Rotate Left Digit Byte |s={ll,s}<-4 |
|RRb d,s |****--|Rotate Right |d=s->d |
|RRCb d,s |****--|Rotate Right through Carry |d=s->{C,d} |
|RRDB ll,s |-*?---|Rotate Right Digit Byte |s=4->{ll,s} |
|SBC d,s |****bb|Subtract with Carry |d=d-s-C |
|SC s |------|System Call (-[SP]={PS,ins})|PS=sys PS #|
|SDAa d,s |****--|Shift Dynamic Arithmetic |d={1,d,0}<-s |
----------------------------------------------------------------
----------------------------------------------------------------
|Mnemonic |CZSPDH|Description |Notes |
|------------+------+----------------------------+-------------|
|SDLa d,s |***?--|Shift Dynamic Logical |d={0,d,0}<-s |
|SETb d,s |------|Set Bit |d<s>=1 |
|SETFLG f |++++--|Set Flag |f=1 |
|SLAa d,s |****--|Shift Left Arithmetic |d={d,0}<-s |
|SLLa d,s |***?--|Shift Left Logical |d={d,0}<-s |
|SRAa d,s |***0--|Shift Right Arithmetic |d=s->{1,d} |
|SRLa d,s |***?--|Shift Right Logical |d=s->{0,d} |
|SUBa d,s |****bb|Subtract |d=d-s |
|TCCb cc,d |------|Test Condition Code |If cc d<0>=1 |
|TESTa d |-***--|Test |dv0 |
|TRDB d,s,r|-?-*--|Translate and Decrement |d=s[d],r=r-1 |
|TRDRB d,s,r|-?-1--|Translate, Dec. and Repeat |TRDB till r=0|
|TRIB d,s,r|-?-*--|Translate and Increment |d=s[d],r=r+1 |
|TRIRB d,s,r|-?-1--|Translate, Inc. and Repeat |TRIB till r=0|
|TRTDB s,s,r|-*-*--|Translate, Test and Dec. |RH1=s2[s1],..|
|TRTDRB s,s,r|-*-*--|Translate, Test, Dec. & Rept|TRTDB till...|
|TRTIB s,s,r|-*-*--|Translate, Test and Inc. |RH1=s2[s1],..|
|TRTIRB s,s,r|-*-*--|Translate, Test, Inc. & Rept|TRTIB till...|
|TSETb d |--*---|Test and Set |{S,d}=d<MSB> |
|XOR d,s |-**b--|Logical Exclusive OR |d=dxs |
|------------+------+----------------------------+-------------|
| FCW |-*01? |Unaffected/affected/reset/set/unknown |
| |+b |Optionally affected/affected for byte only|
| C |C |Carry flag (Bit 7) |
| Z | Z |Zero flag (Bit 6) |
| S | S |Sign flag (Bit 5) |
| D | D |Decimal adjust flag (Bit 4) |
| P/V | P |Parity/Overflow flag (Bit 3) |
| H | H|Half carry flag (Bit 2) |
|-------------------+------------------------------------------|
| #n #nn #nnnn |Immediate data mode (IM, 4/8/16/32-bit) |
| r |Register addressing mode (R) |
| @r |Indirect Register mode (IR) |
| <<n>>nn nn |nn| |Direct Addressing mode (DA) |
| <<n>>nn[Rn] nn[Rn]|Indexed Addressing mode (X, not R0) |
| $+nn nn |Relative Addressing mode (RA) |
| RRn[#nn] |Based Addressing mode (BA, not RR0) |
| RRn[Rn] |Based Indexed addressing mode (BX, not R0)|
|-------------------+------------------------------------------|
|AVAL nnnn(,...) |Define Address Value(s) |
|BVAL n(,...) |Define Byte Value(s) |
|EVEN |Set program counter to Even address |
|LVAL nnnn(,...) |Define Long word Value(s) |
|WVAL nn(,...) |Define Word Value(s) |
|-------------------+------------------------------------------|
| FCW |Flag Control Word (16-bit) |
| PC |Program Counter (32-bit) |
| PSAP |Program Status Area Pointer (32-bit) |
| REFRESH |Refresh control register (16-bit) |
| RLn |Low byte register (8-bit, n=0-7) |
| RHn |High byte register (8-bit, n=0-7) |
| Rn |Word register (16-bit, n=0-15) |
| RRn |Double word register (32-bit, n=0-14,even)|
| RQn |Quadruple word reg. (64-bit, n=0/4/8/12) |
| RR14 |Used as stack pointer (32-bit) |
|-------------------+------------------------------------------|
| a |Blank, B or L (Word/Byte/Long operation) |
| b |Blank or B (Word/Byte operation) |
| c |Condition (r,cc) |
| cc |Condition Code (F/Z/NZ/C/NC/PL/MI/NE/EQ/ |
| | OV/NOV/PE/PO/GE/LT/GT/LE/UGE/ULT/UGT/ULE)|
| d d<X> |Destination/Bit X of Destination |
| f |Flag(s) (C/Z/S/P/V) |
| i |Interrupt (VI/NVI) |
| l |Blank or L (Word/Long word operation) |
| ll |Link Location (bottom 4 bits of register) |
| n nn nnnn |Constant expression (8/16/32-bit) |
| p |Blank or S (Normal/Special operation) |
| r |Register (RLn/RHn/Rn/RRn/RQn) |
| s EAs |Source/Effective Address of Source |
| + - * / |Arithmetic add/subtract/multiply/divide |
| & ~ v x |Logical AND/NOT/inclusive OR/exclusive OR |
| <-X X-> |Rotate left/right by X bits |
| [ ] [ ]+ -[ ] |Indirect address/auto-increment/decrement |
| { } # |Combination of operands/privileged instr. |
| <<n>> |nn| |Segment/short offset (0-255) |
----------------------------------------------------------------
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