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De instructieset

De instructies die de 68HC11 kent zijn in de volgende tabellen per functie gerangschikt. Bij elke instructie is aangegeven welk type adressering bij de instructie kan worden toegepast.

Een volledig overzicht met beschrijving van alle instructies, om te downloaden en eventueel af te drukken, vindt u hier.

 

Imm 

 immediate adressering

Dir 

 direct adressering

Ext 

 extended adressering

Ind 

 indexed adressering (IX en IY)

Inh 

 inherente adressering

Rel 

 relative adressering

De micro-controller is een Amerikaans produkt. De namen van de instructies zijn dan ook in het Engels. Wij hebben deze Engelse benamingen gehandhaafd, omdat de afkortingen van de instructies ('mnemonics') uiteraard op deze Engelse namen betrekking hebben.

Wat elke instructie precies doet, wordt hier behandeld.

Laden, Opslaan en Verwisselen

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Clear memory Byte CLR  x x
Clear accumulator A CLRA  x
Clear accumulator B CLRB  x
Load accumulator A LDAA  x x x x
Load accumulator B LDAB  x x x x
Load D LDD  x x x x
Pull A PULA  x
Pull B PULB  x
Push A PSHA  x
Push B PSHB  x
Store accumulator A STAA  x x x x
Store accumulator B STAB  x x x x
Store D STD  x x x x
Transfer A to B TAB  x
Transfer A to CCR TAP  x
Transfer B to A TBA  x
Transfer CCR to A TPA  x
Exchange D with X XGDX  x
Exchange D with Y XGDY  x

 

Rekenkundige bewerkingen

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Add acumulator B to A ABA x
Add B to X ABX x
Add B to Y ABY x
Add with Carry to A ADCA x x x x
Add with Carry to B ADCB x x x x
Add memory to A ADDA x x x x
Add memory to B ADDB x x x x
Add memory to D  ADDD x x x x
Compare A to B CBA x
Compare A to memory CMPA x x x x
Compare B to memory CMPB x x x x
Compare D to memory CPD x x x x
Decimal Adjust A DAA x
Decrement memory byte DEC x x
Decrement A DECA x
Decrement B DECB x
Increment memory byte INC x x
Increment A INCA x
Increment B INCB x
Two's complement memory NEG x x
Two's complement A NEGA x
Two's complement B NEGB x
Subtract with Carry from A SBCA x x x x
Subtract with Carry from B SBCB x x x x
Subtract from A SUBA x x x x
Subtract from B SUBB x x x x
Subtract from D SUBD x x x x
Test for zero or minus TST x x
Test for zero or minus A TSTA x
Test for zero or minus B TSTB x
Multiply MUL x
Integer divide IDIV x
Fractional divide FDIV x

 

Logische bewerkingen

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
And A with memory ANDA x x x x
And B with memory ANDB x x x x
Bit(s) test A with memory BITA x x x x
Bit(s) test B with memory BITB x x x x
Complement memory byte COM x x
Complement A COMA x
Complement B COMB x
Or A with memory ORAA x x x x
Or B with memory ORAB x x x x
Exor A with memory EORA x x x x
Exor B with memory EORB x x x x

 

Bit test en set/clear

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Bit(s) test A with memory BITA x x x x
Bit(s) test B with memory BITB x x x x
Clear bit(s) in memory BCLR x x
Set bit(s) in memory BSET x x
Branch if bit(s) clear BRCLR x x
Branch if bit(s) set BRSET x x

 

Schuiven en roteren

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Arithmetic shift left ASL x x
Arithmetic shift left A ASLA x
Arithmetic shift left B ASLB x
Arithmetic shift left D ASLD x
Arithmetic shift right ASR x x
Arithmetic shift right A ASRA x
Arithmetic shift right B ASRB x
Logical shift left LSL x x
Logical shift left A LSLA x
Logical shift left B LSLB x
Logical shift left D LSLD x
Logical shift right LSR x x
Logical shift right A LSRA x
Logical shift right B LSRB x
Logical shift right D LSRD x
Rotate left ROL x x
Rotate left A ROLA x
Rotate left B ROLB x
Rotate right ROR x x
Rotate right A RORA x
Rotate right B RORB x

 

Stackpointer en Indexregister functies

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Add B to X ABX x
Add B to Y ABY x
Compare X to memory CPX x x x x
Compare Y to memory CPY x x x x
Decrement Stackpointer DES x
Decrement X DEX x
Decrement Y DEY x
Increment Stackpointer INS x
Increment X INX x
Increment Y INY x
Load Stackpointer LDS x x x x
Load X LDX x x x x
Load Y LDY x x x x
Pull X from stack PULX x
Pull Y from stack PULY x
Push X onto stack PSHX x
Push Y onto stack PSHY x
Store X STX x x x x
Store Y STY x x x x
Store Stackpointer STS x x x x
Transfer S to X TSX x
Transfer S to Y TSY x
Transfer X to S TXS x
Transfer Y to S TYS x
Exchange D with X XGDX x
Exchange D with Y XGDY x

 

Condition Code manipulatie

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Clear Carry bit CLC x
Clear Interrupt mask bit CLI x
Clear Overflow bit CLV x
Set Carry bit SEC x
Set Interrupt mask bit SEI x
Set Overflow bit SEV x
Transfer A to CCR TAP x
Transfer CCR to A TPA x

 

Branches

Functie  Mnemonic  Conditie  Rel Dir Ind
Branch if carry clear BCC C = 0 x
Branch if carry set BCS C = 1 x
Branch if not equal BNE Z = 0 x
Branch if equal BEQ Z = 1 x
Branch if plus BPL N = 0 x
Branch if minus BMI N = 1 x
Branch if overflow clear BVC V = 0 x
Branch if overflow set BCS V = 1 x
Branch if bit(s) clear BRCLR Bit test x x x
Branch if bit(s) set BRSET Bit test x x x
Branch if greater than BGT > (signed) x
Branch if greater or equal BGE >= (signed) x
Branch if less or equal BLE <= (signed) x
Branch if less than BLT < (signed) x
Branch if higher BHI > (unsigned) x
Branch if higher or same BHS >= (unsigned) x
Branch if lower or same BLS <= (unsigned) x
Branch if lower BLO < (unsigned) x

 

Jumps

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Jump  JMP x x x

 

Subroutine aanroep en terugkeer

Functie  Mnemonic  Rel  Dir  Ext  Ind  Inh
Jump to subroutine JSR x x x
Branch to subroutine BSR x
Return from subroutine RTS x

 

Interrupts

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
Return from Interrupt RTI x
Software Interrupt SWI x
Wait for Interrupt WAI x

 

Diversen

Functie  Mnemonic  Imm  Dir  Ext  Ind  Inh
No operation NOP x
Stop STOP x

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