Z80 Instruction Table NoSemantic
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The following page is created by a script which transformed the semantic-generated output from the Z80_Instruction_Table as of 200250120 to this plain wikimedia page. It also contains all the instructions and doesn't break the table after EX DE, HL like the source page. To view only ZX Next specific instructions see the following plain table which is generated in the same way like this plain table: Z80Next_Only_Instruction_Table
| Mnemonic | Status | Addressing Mode 1 | Addressing Mode 2 | Flags: C N PV H Z S | T-States | Summary |
|---|---|---|---|---|---|---|
| ADC A, (HL) | S | Accumulator | Indirect | S 0 V S S S | 7 | A+=HL*+(CF?1:0) |
| ADC A, (IXY+d) | S | Accumulator | Indexed | S 0 V S S S | 19 | A+=(IXY+d)*+(CF?1:0) |
| ADC A, n | S | Accumulator | Immediate | S 0 V S S S | 7 | A+=n+(CF?1:0) |
| ADC A, r | S | Accumulator | Register | S 0 V S S S | 4 | A+=r+(CF?1:0) |
| ADC HL, BC/DE/HL/SP | S | Register | Register | S 0 V ! S S | 15 | HL+=rr+(CF?1:0) |
| ADD A, (HL) | S | Accumulator | Indirect | S 0 V S S S | 7 | A+=HL* |
| ADD A, (IXY+d) | S | Accumulator | Indexed | S 0 V S S S | 19 | A+=(IXY+d)* |
| ADD A, n | S | Accumulator | Immediate | S 0 V S S S | 7 | A+=n |
| ADD A, r | S | Accumulator | Register | S 0 V S S S | 4 | A+=r |
| ADD HL, BC/DE/HL/SP | S | Register | Register | S 0 - ! - - | 11 | HL+=rr |
| ADD HL/DE/BC, A | E | Register | Register | ? - - - - - | 8 | rr+=unsigned A |
| ADD HL/DE/BC, nn | E | Register | Immediate | - - - - - - | 16 | rr+=nn |
| ADD IXY, BC/DE/IXY/SP | S | Register | Register | S 0 - ! - - | 15 | IXY+=rr |
| AND (HL) | S | Indirect | - | 0 0 P 1 S S | 7 | A := A & HL* |
| AND (IXY+d) | S | Indexed | - | 0 0 P 1 S S | 19 | A := A & (IXY+d)* |
| AND n | S | Immediate | - | 0 0 P 1 S S | 7 | A := A & n |
| AND r | S | Register | - | 0 0 P 1 S S | 4 | A := A & r |
| BIT b,(HL) | S | Immediate | Indirect | - 0 ? 1 ! ? | 12 | HL*[b]==1? |
| BIT b,(IXY+d) | S | Immediate | Indexed | - 0 ? 1 ! ? | 20 | (IXY+d)*[b]==1? |
| BIT b,r | S | Immediate | Register | - 0 ? 1 ! ? | 8 | r[b]==1? |
| BRLC DE,B | E | - | - | - - - - - - | 8 | DE:=DE<<(B&15) OR DE>>(16-B&15) |
| BSLA DE,B | E | - | - | - - - - - - | 8 | DE:=DE<<(B&31) |
| BSRA DE,B | E | - | - | - - - - - - | 8 | DE:=signed(DE)>>(B&31) |
| BSRF DE,B | E | - | - | - - - - - - | 8 | DE:=~(unsigned(~DE)>>(B&31)) |
| BSRL DE,B | E | - | - | - - - - - - | 8 | DE:=unsigned(DE)>>(B&31) |
| CALL Z/NZ/C/NC/PO/PE/P/M, nn | S | Address | - | - - - - - - | 17 ; 10 if not cc | if cc {SP-=2; SP*:=PC; PC:=nn} |
| CALL nn | S | Address | - | - - - - - - | 17 | SP-=2; SP*:=PC; PC:=nn |
| CCF | S | - | - | ! 0 - ! - - | 4 | CF:=!CF |
| CP (HL) | S | Indirect | - | S 1 V S S S | 7 | A-=HL*? |
| CP (IXY+d) | S | Indexed | - | S 1 V S S S | 19 | A-=(IXY+d)? |
| CP n | S | Immediate | - | S 1 V S S S | 7 | A-=n? |
| CP r | S | Register | - | S 1 V S S S | 4 | A-=r? |
| CPD | S | - | - | - 1 L S ! S | 16 | HL*==A?; HL--; BC-- |
| CPDR | S | - | - | - 1 L S ! S | 21x+16 | do CPD while (!Z && BC>0) |
| CPI | S | - | - | - 1 L S ! S | 16 | HL*==A?; HL++; BC-- |
| CPIR | S | - | - | - 1 L S ! S | 21x+16 | do CPI while (!Z && BC>0) |
| CPL | S | - | - | - 1 - 1 - - | 4 | A:=~A |
| DAA | S | - | - | ! - P ! S S | 8 | if(A&$0F>$09 or HF) A±=$06; if(A&$F0>$90 or CF) A±=$60 (± depends on NF) |
| DEC (HL) | S | Indirect | - | - 1 ! S S S | 11 | HL*-- |
| DEC (IXY+d) | S | Indexed | - | - 1 ! S S S | 23 | (IXY+D)*-- |
| DEC BC/DE/HL/SP | S | Register | - | - - - - - - | 6 | rr-- |
| DEC IXY | S | Register | - | - - - - - - | 10 | rr-- |
| DEC r | S | Register | - | - 1 ! S S S | 4 | r-- |
| DI | S | - | - | - - - - - - | 4 | IFF1:=0; IFF2:=0 |
| DJNZ n | S | Immediate | - | - - - - - - | 13 | B--; if B!=0 PC+=nn |
| EI | S | - | - | - - - - - - | 4 | IFF1:=1; IFF2:=1 |
| EX (SP), HL | S | Indirect | Register | - - - - - - | 19 | swap(SP*,HL) |
| EX (SP), IXY | S | Indirect | Register | - - - - - - | 23 | swap(SP*,IXY) |
| EX AF, AF' | S | Register | Register | ! ! ! ! ! ! | 4 | swap(AF,AF') |
| EX DE, HL | S | Register | Register | - - - - - - | 4 | swap(DE,HL) |
| EXX | S | - | - | - - - - - - | 4 | swap(BC,BC');swap(DE,DE');swap(HL,HL') |
| HALT | S | - | - | - - - - - - | 4 | waits for interrupt |
| IM n | S | Immediate | - | - - - - - - | 8 | Interrupt mode:=n |
| IN (c) | U | Register | - | - 0 P 0 S S | 12 | in(BC)? |
| IN A, (n) | S | Accumulator | Immediate | - - - - - - | 11 | A := in(An) |
| IN r, (c) | S | Register | Register | - 0 P 0 S S | 12 | r := in(BC) |
| INC (HL) | S | Indirect | - | - 0 ! S S S | 11 | HL*++ |
| INC (IXY+d) | S | Indexed | - | - 0 ! S S S | 23 | (IXY+d)*++ |
| INC BC/DE/HL/SP | S | Register | - | - - - - - - | 6 | rr++ |
| INC IXY | S | Register | - | - - - - - - | 10 | rr++ |
| INC r | S | Register | - | - 0 ! S S S | 4 | r++ |
| IND | S | - | - | ? 1 ? ? ! ? | 16 | HL*:=in(BC); HL--; B-- |
| INDR | S | - | - | ? 1 ? ? 1 ? | 21x+16 | do IND while(B>0) |
| INI | S | - | - | ? 1 ? ? ! ? | 16 | HL*:=in(BC); HL++; B-- |
| INIR | S | - | - | ? 1 ? ? 1 ? | 21x+16 | do INI while(B>0) |
| JP (C) | E | Register | - | ? ? ? ? ? ? | 13 | PC:=PC&$C000+IN(C)<<6 |
| JP (HL) | S | Register | - | - - - - - - | 4 | PC:=HL (not PC:=HL*) |
| JP (IXY) | S | Register | - | - - - - - - | 8 | PC:=IXY (not PC:=IXY*) |
| JP Z/NZ/NC/C/PO/PE/P/M, nn | S | Address | - | - - - - - - | 10 | if cc PC:=nn |
| JP nn | S | Address | - | - - - - - - | 10 | PC:=nn |
| JR C/NC/Z/NZ, nn | S | Immediate | - | - - - - - - | 12 ; 7 if not cc | if cc PC+=nn |
| JR nn | S | Immediate | - | - - - - - - | 12 | PC+=nn |
| LD (BC/DE), A | S | Indirect | Accumulator | - - - - - - | 7 | rr* := A |
| LD (HL), n | S | Indirect | Immediate | - - - - - - | 10 | HL* := n |
| LD (HL),r | S | Indirect | Register | - - - - - - | 7 | HL* := r |
| LD (IXY+d), n | S | Indexed | Immediate | - - - - - - | 19 | (IXY+d)* := n |
| LD (IXY+d),r | S | Indexed | Register | - - - - - - | 19 | (IXY+D)* := r |
| LD (nn), A | S | Address | Accumulator | - - - - - - | 13 | (nn)* := A |
| LD (nn), BC/DE/SP/IXY | S | Address | Register | - - - - - - | 20 | (nn)* := rr |
| LD (nn), HL | S | Address | Register | - - - - - - | 16 | (nn)* := HL |
| LD A, (BC/DE) | S | Accumulator | Indirect | - - - - - - | 7 | A := rr* |
| LD A, (nn) | S | Accumulator | Address | - - - - - - | 13 | A := (nn)* |
| LD A, I | S | Accumulator | Register | - 0 ! 0 S S | 9 | A := I; P/V:=IFF2 |
| LD A, R | S | Accumulator | Register | - 0 ! 0 S S | 9 | A := R; P/V:=IFF2 |
| LD BC/DE/HL/SP, nn | S | Register | Immediate | - - - - - - | 10 | rr := nn |
| LD BC/DE/SP/IXY, (nn) | S | Register | Address | - - - - - - | 20 | rr := (nn)* |
| LD HL, (nn) | S | Register | Address | - - - - - - | 16 | HL := (nn)* |
| LD I, A | S | Register | Accumulator | - - - - - - | 9 | I := A |
| LD IXY, nn | S | Register | Immediate | - - - - - - | 14 | rr := nn |
| LD R, A | S | Register | Accumulator | - - - - - - | 9 | R := A |
| LD SP, HL | S | Register | Register | - - - - - - | 6 | SP := HL |
| LD SP, IXY | S | Register | Register | - - - - - - | 10 | SP := IXY |
| LD r, (HL) | S | Register | Indirect | - - - - - - | 7 | r := HL* |
| LD r, (IXY+d) | S | Register | Indexed | - - - - - - | 19 | r := (IXY+d)* |
| LD r, r' | S | Register | Register | - - - - - - | 4 | r := r' |
| LD r,n | S | Register | Immediate | - - - - - - | 7 | r := n |
| LDD | S | - | - | - 0 L 0 - - | 16 | DE*:=HL*; DE--; HL--; BC-- |
| LDDR | S | - | - | - 0 0 0 - - | 21x+16 | do LDD while(BC>0) |
| LDDRX | E | - | - | - - - - - - | 21/16 | do LDDX while(BC>0) |
| LDDX | E | - | - | - - - - - - | 16 | {if HL*!=A DE*:=HL*;} DE++; HL--; BC-- |
| LDI | S | - | - | - 0 L 0 - - | 16 | DE*:=HL*; DE++; HL++; BC-- |
| LDIR | S | - | - | - 0 L 0 - - | 21x+16 | do LDI while(BC>0) |
| LDIRX | E | - | - | - - - - - - | 21/16 | do LDIX while(BC>0) |
| LDIX | E | - | - | - - - - - - | 16 | {if HL*!=A DE*:=HL*;} DE++; HL++; BC-- |
| LDPIRX | E | - | - | - - - - - - | 21/16 | do{t:=(HL&$FFF8+E&7)*; {if t!=A DE*:=t;} DE++; BC--}while(BC>0) |
| LDWS | E | - | - | - 0 ! S S S | 14 | DE*:=HL*; INC L; INC D; |
| MIRROR A | E | Register | - | - - - - - - | 8 | A[76543210]:=A[01234567] |
| MUL d,e | E | - | - | - - - - - - | 8 | DE:=D*E |
| NEG | S | - | - | ! 1 ! S S S | 8 | A:=0-A |
| NEXTREG n, A | E | Immediate | Accumulator | - - - - - - | 17 | HwNextReg_n:=A |
| NEXTREG n,n' | E | Immediate | Immediate | - - - - - - | 20 | HwNextReg_n:=n' |
| NOP | S | - | - | - - - - - - | 4 | PC+=1 |
| OR (HL) | S | Indirect | - | 0 0 P 0 S S | 7 | A := A OR HL* |
| OR (IXY+d) | S | Indexed | - | 0 0 P 0 S S | 19 | A := A OR (IXY+d)* |
| OR n | S | Immediate | - | 0 0 P 0 S S | 7 | A := A OR n |
| OR r | S | Register | - | 0 0 P 0 S S | 4 | A := A OR r |
| OTDR | S | - | - | ? 1 ? ? 1 ? | 21x+16 | do OUTD while (B>0) |
| OTIR | S | - | - | ? 1 ? ? 1 ? | 21x+16 | do OUTI while (B>0) |
| OUT (c),0 | U | Register | Immediate | - - - - - - | 12 | out(BC,0) |
| OUT (c),r | S | Register | Register | - - - - - - | 12 | out(BC,r) |
| OUT (n),A | S | Immediate | Accumulator | - - - - - - | 11 | out(An,A) |
| OUTD | S | - | - | ? 1 ? ? ! ? | 16 | B--; out(BC,HL*); HL-- |
| OUTI | S | - | - | ? 1 ? ? ! ? | 16 | B--; out(BC,HL*); HL++ |
| OUTINB | E | - | - | ? ? ? ? ? ? | 16 | out(BC,HL*); HL++ |
| PIXELAD | E | - | - | - - - - - - | 8 | HL:=$4000+((D&$C0)<<5)+((D&$07)<<8)+((D&$38)<<2)+(E>>3) |
| PIXELDN | E | - | - | - - - - - - | 8 | if(HL&$0700!=$0700) HL+=256;else if(HL&$e0!=$e0) HL:=HL&$F8FF+$20;else HL:=HL&$F81F+$0800 |
| POP AF | S | Register | - | ! ! ! ! ! ! | 10 | rr:=SP*; SP+=2 |
| POP BC/DE/HL | S | Register | - | - - - - - - | 10 | rr:=SP*; SP+=2 |
| POP IXY | S | Register | - | - - - - - - | 14 | rr:=SP*; SP+=2 |
| PUSH BC/DE/HL/AF | S | Register | - | - - - - - - | 11 | SP-=2; SP*:=rr |
| PUSH IXY | S | Register | - | - - - - - - | 15 | SP-=2; SP*:=rr |
| PUSH nn | E | Immediate | - | - - - - - - | 23 | SP-=2; SP*:=nn |
| RES b,(HL) | S | Immediate | Register | - - - - - - | 15 | HL*:=HL* & (~(1<<b)) |
| RES b,(IXY+d) | S | Immediate | Indexed | - - - - - - | 23 | (IXY+d)*:=(IXY+d)* & (~(1<<b)) |
| RES b,r | S | Immediate | Register | - - - - - - | 8 | r:=r & (~(1<<b)) |
| RES r,b,(IX+d) | U | Immediate | Indexed | - - - - - - | 23 | (IX+d)*:=(IX+d)* & (~(1<<b)); r:=(IX+d)* |
| RET | S | - | - | - - - - - - | 10 | PC:=SP*; SP+=2 |
| RET Z/NZ/C/NC/PO/PE/P/M | S | - | - | - - - - - - | 11 ; 5 if not cc | if cc {PC:=SP*; SP+=2} |
| RETI | S | - | - | - - - - - - | 14 | PC:=SP*; SP+=2 |
| RETN | S | - | - | - - - - - - | 14 | IFF1:=IFF2; PC:=SP*; SP+=2 |
| RL (HL) | S | Indirect | - | ! 0 P 0 S S | 15 | x:=HL*[7]; HL*:=HL*<<1; HL*[0]:=CF; CF:=x |
| RL (IXY+d) | S | Indexed | - | ! 0 P 0 S S | 23 | x:=(IXY+d)*[7]; (IXY+d)*:=(IXY+d)*<<1; (IXY+d)*[0]:=CF; CF:=x |
| RL r | S | Register | - | ! 0 P 0 S S | 8 | x:=r[7]; r:=r<<1; r[0]:=CF; CF:=x |
| RL r,(IX+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | x:=(IX+d)*[7]; (IX+d)*:=(IX+d)*<<1; (IX+d)*[0]:=CF; CF:=x; r:=(IX+d)* |
| RLA | S | - | - | ! 0 - 0 - - | 4 | x:=A[7]; A:=A<<1; A[0]:=CF; CF:=x |
| RLC (HL) | S | Indirect | - | ! 0 P 0 S S | 15 | x:=HL*[7]; HL*:=HL*<<1; HL*[0]:=x; CF:=x |
| RLC (IXY+d) | S | Indexed | - | ! 0 P 0 S S | 23 | x:=(IXY+d)*[7]; (IXY+d)*:=(IXY+d)*<<1; (IXY+d)*[0]:=x; CF:=x |
| RLC r | S | Register | - | ! 0 P 0 S S | 8 | x:=r[7]; r:=r<<1; r[0]:=x; CF:=x |
| RLC r,(IX+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | x:=(IX+d)*[7]; (IX+d)*:=(IX+d)*<<1; (IX+d)*[0]:=x; CF:=x; r:=(IX+d)* |
| RLCA | S | - | - | ! 0 - 0 - - | 4 | x:=A[7]; A:=A<<1; A[0]:=x; CF:=x |
| RLD | S | - | - | - 0 P 0 S S | 18 | x=HL*; HL*[0123]:=A[0123]; HL*[7654]:=x[0123]; A[0123]:=x[7654] |
| RR (HL) | S | Indirect | - | ! 0 P 0 S S | 15 | x:=HL*[0]; HL*:=HL*>>1; HL*[7]:=CF; CF:=x |
| RR (IXY+d) | S | Indexed | - | ! 0 P 0 S S | 23 | x:=(IXY+d)*[0]; (IXY+d)*:=(IXY+d)*>>1; (IXY+d)*[7]:=CF; CF:=x |
| RR r | S | Register | - | ! 0 P 0 S S | 8 | x:=r[0]; r:=r>>1; r[7]:=CF; CF:=x |
| RR r,(IX+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | x:=(IX+d)*[0]; (IX+d)*:=(IX+d)*>>1; (IX+d)*[7]:=CF; CF:=x; r=(IX+d)* |
| RRA | S | - | - | ! 0 - 0 - - | 4 | x:=A[0]; A:=A>>1; A[7]:=CF; CF:=x |
| RRC (HL) | S | Indirect | - | ! 0 P 0 S S | 15 | x:=HL*[0]; HL*:=HL*>>1; HL*[7]:=x; CF:=x |
| RRC (IXY+d) | S | Indexed | - | ! 0 P 0 S S | 23 | x:=(IXY+d)*[0]; (IXY+d)*:=(IXY+d)*>>1; (IXY+d)*[7]:=x; CF:=x |
| RRC r | S | Register | - | ! 0 P 0 S S | 8 | x:=r[0]; r:=r>>1; r[7]:=x; CF:=x |
| RRC r,(IX+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | x:=(IX+d)*[0]; (IX+d)*:=(IX+d)*>>1; (IX+d)*[7]:=x; CF:=x; r:=(IX+d)* |
| RRCA | S | - | - | ! 0 - 0 - - | 4 | x:=A[0]; A:=A>>1; A[7]:=x; CF:=x |
| RRD | S | - | - | - 0 P 0 S S | 18 | x=HL*; HL*[7654]:=A[0123]; HL*[0123]:=x[7654]; A[0123]:=x[0123] |
| RST n | S | Immediate | - | - - - - - - | 11 | CALL n |
| SBC A, (HL) | S | Accumulator | Indirect | S 1 V S S S | 7 | A-=(HL*+(CF?1:0)) |
| SBC A, (IXY+d) | S | Accumulator | Indexed | S 1 V S S S | 19 | A-=((IXY+d)+(CF?1:0)) |
| SBC A, n | S | Accumulator | Immediate | S 1 V S S S | 7 | A-=(n+(CF?1:0)) |
| SBC A, r | S | Accumulator | Register | S 1 V S S S | 4 | A-=(r+(CF?1:0)) |
| SBC HL, BC/DE/HL/SP | S | Register | Register | S 1 V ! S S | 15 | HL-=(rr+(CF?1:0)) |
| SCF | S | - | - | 1 0 - 0 - - | 4 | CF:=1 |
| SET b,(HL) | S | Immediate | Register | - - - - - - | 15 | HL*:=HL* OR (1<<b) |
| SET b,(IXY+d) | S | Immediate | Indexed | - - - - - - | 23 | (IXY+d)*:=(IXY+d)* OR (1<<b) |
| SET b,r | S | Immediate | Register | - - - - - - | 8 | r:=r OR (1<<b) |
| SET r,b,(IX+d) | U | Immediate | Indexed | - - - - - - | 23 | (IX+d)*:=(IX+d)* OR (1<<b); r:=(IX+d)* |
| SETAE | E | - | - | - - - - - - | 8 | A:=unsigned($80)>>(E&7) |
| SL1 (HL) | U | Indirect | - | ! 0 P 0 S S | 15 | HL*:=(HL*<<1)+1 |
| SL1 (IXY+d) | U | Indexed | - | ! 0 P 0 S S | 23 | (IXY+d)*:=((IXY+d)*<<1)+1 |
| SL1 r | U | Register | - | ! 0 P 0 S S | 8 | r:=(r<<1)+1 |
| SL1 r,(IXY+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | (IXY+d)*:=((IXY+d)*<<1)+1; r=(IXY+d)* |
| SLA (HL) | S | Indirect | - | ! 0 P 0 S S | 15 | HL*:=HL*<<1 |
| SLA (IXY+d) | S | Indexed | - | ! 0 P 0 S S | 23 | (IXY+d)*:=(IXY+d)*<<1 |
| SLA r | S | Register | - | ! 0 P 0 S S | 8 | r:=r<<1 |
| SLA r,(IX+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | (IX+d)*:=(IX+d)*<<1; r=(IX+d)* |
| SRA (HL) | S | Indirect | - | ! 0 P 0 S S | 15 | HL*:=HL*>>1 OR HL*[7] |
| SRA (IXY+d) | S | Indexed | - | ! 0 P 0 S S | 23 | (IXY+d)*:=(IXY+d)*>>1 OR (IXY+d)*[7] |
| SRA r | S | Register | - | ! 0 P 0 S S | 8 | r:=r>>1 OR r[7] |
| SRA r,(IX+d) | U | Register | Indexed | ! 0 P 0 S S | 23 | (IX+d)*:=(IX+d)*>>1 OR (IX+d)*[7]; r:=(IX+d)* |
| SRL (HL) | S | Indirect | - | ! 0 P 0 S 0 | 15 | HL*:=unsigned(HL*)>>1 |
| SRL (IXY+d) | S | Indexed | - | ! 0 P 0 S 0 | 23 | (IXY+d)*:=unsigned((IXY+d)*)>>1 |
| SRL r | S | Register | - | ! 0 P 0 S 0 | 8 | r:=unsigned(r)>>1 |
| SRL r,(IXY+d) | U | Register | Indexed | ! 0 P 0 S 0 | 23 | (IXY+d)*:=unsigned((IXY+d)*)>>1; r:=(IXY+d)* |
| SUB (HL) | S | Indirect | - | S 1 V S S S | 7 | A -= HL* |
| SUB (IXY+d) | S | Indexed | - | S 1 V S S S | 19 | A -= (IXY+d)* |
| SUB n | S | Immediate | - | S 1 V S S S | 7 | A -= n |
| SUB r | S | Register | - | S 1 V S S S | 4 | A -= r |
| SWAPNIB | E | - | - | - - - - - - | 8 | A:=A[3210]<<4 OR A[7654]>>4 |
| TEST n | E | Immediate | - | S ? P S S S | 11 | A&n? |
| XOR (HL) | S | Indirect | - | 0 0 P 0 S S | 7 | A := A ^ HL* |
| XOR (IXY+d) | S | Indexed | - | 0 0 P 0 S S | 19 | A := A ^ (IXY+d)* |
| XOR n | S | Immediate | - | 0 0 P 0 S S | 7 | A := A ^ n |
| XOR r | S | Register | - | 0 0 P 0 S S | 4 | A := A ^ r |