Full 6809/6809e/6309 Opcode List Including Undocumented Opcodes
    ===============================================================
               File: DOCS.Comp.6809.OpList - Update: 0.10
                 Author: J.G.Harston - Date: 08-08-2001

This attempts to be a full list of all the opcodes on the 6809/6809e and
6309.
    
--+----------- ----------- ----------+ ----------- ----------- ----
nn|               6809/680 9e        |           6 309         
  |nn          10nn        11nn      | nn          10nn        11nn
--+----------- ----------- ----------+ ----------- ----------- ----
00 NEG  <dp    -           -           NEG  <dp    -           -
01 neg/com <dp -           -           AIM  <dp    -           -
02 ??          -           -           AIM  <dp    -           -
03 COM  <dp    -           -           COM  <dp    -           -
04 LSR  <dp    -           -           LSR  <dp    -           -
05 lsr  <dp    -           -           EIM  <dp    -           -
06 ROR  <dp    -           -           ROR  <dp    -           -
07 ASR  <dp    -           -           ASR  <dp    -           -
08 ASL  <dp    -           -           ASL  <dp    -           -
09 ROL  <dp    -           -           ROL  <dp    -           -
0A DEC  <dp    -           -           DEC  <dp    -           -
0B dec  <dp    -           -           TIM  <dp    -           -
0C INC  <dp    -           -           INC  <dp    -           -
0D TST  <dp    -           -           TST  <dp    -           -
0E JMP  <dp    -           -           JMP  <dp    -           -
0F CLR  <dp    -           -           CLR  <dp    -           -
                                                               
10 *** 10 ***  -           -           *** 10 ***  -           -
11 *** 11 ***  -           -           *** 11 ***  -           -
12 NOP         -           -           NOP         -           -
13 SYNC        -           -           SYNC        -           -
14 -           -           -           SEXW        -           -
16 LBRA rel16  -           -           LBRA rel16  -           -
17 LBSR rel16  -           -           LBSR rel16  -           -
18 -           -           -           -           -           -
19 DAA         -           -           DAA         -           -
1A ORCC #n     -           -           ORCC #n     -           -
1B -           -           -           -           -           -
1C ANDCC #n    -           -           ANDCC #n    -           -   
1D SEX         -           -           SEX         -           -
1E EXG  r0,r1  -           -           EXG r0,r1   -           -
1F TFR  r0,r1  -           -           TFR r0,r1   -           -
                                                               
20 BRA  rel    -           -           BRA  rel    -           -
21 BRN  rel    LBRN rel16  -           BRN  rel    LBRN rel16  -
22 BHI  rel    LBHI rel16  -           BHI  rel    LBHI rel16  -
23 BLS  rel    LBLS rel16  -           BLS  rel    LBLS rel16  -
24 BCC  rel    LBCC rel16  -           BCC  rel    LBCC rel16  -
25 BCS  rel    LBCS rel16  -           BCS  rel    LBCS rel16  -
26 BNE  rel    LBNE rel16  -           BNE  rel    LBNE rel16  -
27 BEQ  rel    LBEQ rel16  -           BEQ  rel    LBEQ rel16  -
28 BVC  rel    LBVC rel16  -           BVC  rel    LBVC rel16  -
29 BVS  rel    LBVS rel16  -           BVS  rel    LBVS rel16  -
2A BPL  rel    LBPL rel16  -           BPL  rel    LBPL rel16  -
2B BMI  rel    LBMI rel16  -           BMI  rel    LBMI rel16  -
2C BGE  rel    LBGE rel16  -           BGE  rel    LBGE rel16  -
2D BLT  rel    LBLT rel16  -           BLT  rel    LBLT rel16  -
2E BGT  rel    LBGT rel16  -           BGT  rel    LBGT rel16  -
2F BLE  rel    LBLE rel16  -           BLE  rel    LBLE rel16  -
                                                               
30 LEAX idx    -           -           LEAX idx    ADDR r0,r1  BAND  r,b1,b2,<dp
31 LEAY idx    -           -           LEAY idx    ADCR r0,r1  BIAND r,b1,b2,<dp
32 LEAS idx    -           -           LEAS idx    SUBR r0,r1  BOR   r,b1,b2,<dp
33 LEAU idx    -           -           LEAU idx    SBCR r0,r1  BIOR  r,b1,b2,<dp
34 PSHS regs   -           -           PSHS regs   ANDR r0,r1  BEOR  r,b1,b2,<dp
35 PULS regs   -           -           PULS regs   ORR  r0,r1  BIEOR r,b1,b2,<dp
36 PSHU regs   -           -           PSHU regs   EORR r0,r1  LDBT  r,b1,b2,<dp
37 PULU regs   -           -           PULU regs   CMPR r0,r1  STBT  r,b1,b2,<dp
38 -           -           -           -           PSHSW       TFM r0+,r1+
39 RTS         -           -           RTS         PULSW       TFM r0-,r1-
3A ABX         -           -           ABX         PSHUW       TFM r0+,r1
3B RTI         -           -           RTI         PULUW       TFM r0,r1+
3C CWAI #n     -           -           CWAI #n     -           BITMD
3D MUL         -           -           MUL         -           LDMD
3E reset       -           -           ?           -           -
3F SWI         SWI2        SWI3        SWI         SWI2        SWI3
                                                               
40 NEGA        -           -           NEGA        NEGD        -
41 nega        -           -           ?           -           -
42 coma        -           -           ?           -           -
43 COMA        -           -           COMA        COMD        COME
44 LSRA        -           -           LSRA        LSRD        -
45 lsra        -           -           ?           -           -
46 RORA        -           -           RORA        RORD        -
47 ASRA        -           -           ASRA        ASRD        -
48 ASLA        -           -           ASLA        ASLD        -
49 ROLA        -           -           ROLA        ROLD        -
4A DECA        -           -           DECA        DECD        DECE
4B deca        -           -           ?           -           -
4C INCA        -           -           INCA        INCD        INCE
4D TSTA        -           -           TSTA        TSTD        TSTE
4E clra        -           -           ?           -           -
4F CLRA        -           -           CLRA        CLRD        CLRE
                                                               
50 NEGB        -           -           NEGB        -           -
51 negb        -           -           -           -           -
52 comb        -           -           -           -           -
53 COMB        -           -           COMB        COMW        COMF
54 LSRB        -           -           LSRB        LSRW        -
55 lsrb        -           -           -           -           -
56 RORB        -           -           RORB        RORW        -
57 ASRB        -           -           ASRB        ASRW        -
58 ASLB        -           -           ASLB        ASLW        -
59 ROLB        -           -           ROLB        ROLW        -
5A DECB        -           -           DECB        DECW        DECF
5B decb        -           -           -           -           -
5C INCB        -           -           INCB        INCW        INCF
5D TSTB        -           -           TSTB        TSTW        TSTF
5E clrb        -           -           -           -           -
5F CLRB        -           -           CLRB        CLRW        CLRF
                                                               
60 NEG idx     -           -           NEG idx     -           -
61 neg idx     -           -           OIM idx     -           -
62 com idx     -           -           AIM idx     -           -
63 COM idx     -           -           COM idx     -           -
64 LSR idx     -           -           LSR idx     -           -
65 lsr idx     -           -           EIM idx     -           -
66 ROR idx     -           -           ROR idx     -           -
67 ASR idx     -           -           ASR idx     -           -
68 ASL idx     -           -           ASL idx     -           -
69 ROL idx     -           -           ROL idx     -           -
6A DEC idx     -           -           DEC idx     -           -
6B dec idx     -           -           TIM idx     -           -
6C INC idx     -           -           INC idx     -           -
6D TST idx     -           -           TST idx     -           -
6E JMP idx     -           -           JMP idx     -           -
6F CLR idx     -           -           CLR idx     -           -
                                                               
70 NEG >ext    -           -           NEG >ext    -           -
71 neg >ext    -           -           OIM >ext    -           -
72 com >ext    -           -           AIM >ext    -           -
73 COM >ext    -           -           COM >ext    -           -
74 LSR >ext    -           -           LSR >ext    -           -
76 ROR >ext    -           -           ROR >ext    -           -
75 lsr >ext    -           -           EIM >ext    -           -
77 ASR >ext    -           -           ASR >ext    -           -
78 ASL >ext    -           -           ASL >ext    -           -
79 ROL >ext    -           -           ROL >ext    -           -
7A DEC >ext    -           -           DEC >ext    -           -
7B dec >ext    -           -           TIM >ext    -           -
7C INC >ext    -           -           INC >ext    -           -
7D TST >ext    -           -           TST >ext    -           -
7E JMP >ext    -           -           JMP >ext    -           -
7F CLR >ext    -           -           CLR >ext    -           -
                                                               
80 SUBA #n     -           -           SUBA #n     SUBW #n16   SUBE #n
81 CMPA #n     -           -           CMPA #n     CMPW #n16   CMPE #n
82 SBCA #n     -           -           SBCA #n     SBCD #n16   -
83 SUBD #n16   CMPD #n16   CMPU #n16   SUBD #n16   CMPD #n16   CMPU #n16
84 ANDA #n     -           -           ANDA #n     ANDD #n16   -
85 BITA #n     -           -           BITA #n     BITD #n16   -
86 LDA  #n     -           -           LDA  #n     LDW  #n16   LDE  #n
87 -           -           -           -           -           -
88 EORA #n     -           -           EORA #n     EORD #n16   -
89 ADCA #n     -           -           ADCA #n     ADCD #n16   -
8A ORA  #n     -           -           ORA  #n     ORD  #n16   -
8B ADDA #n     -           -           ADCA #n     ADDW #n16   ADDE #n
8C CMPX #n16   CMPY #n16   CMPS #n16   CPX  #n16   CMPY #n16   CMPS #n16
8D BSR  rel    -           -           BSR  rel    -           DIVD #n16
8E LDX  #n16   LDY  #n16   -           LDX  #n16   LDY  #n16   DIVQ #n16
8F -           -           -           -           -           MULD #n16
                                                               
90 SUBA <dp    -           -           SUBA <dp    SUBW <dp    SUBE <dp
91 CMPA <dp    -           -           CMPA <dp    CMPW <dp    CMPE <dp
92 SBCA <dp    -           -           SBCA <dp    SBCD <dp    -
93 SUBD <dp    CMPD <dp    CMPU <dp    SUBD <dp    CMPD <dp    CMPU <dp
94 ANDA <dp    -           -           ANDA <dp    ANDD <dp    -
95 BITA <dp    -           -           BITA <dp    BITD <dp    -
96 LDA  <dp    -           -           LDA  <dp    LDW  <dp    LDE  <dp
97 STA  <dp    -           -           STA  <dp    STW  <dp    STE  <dp
98 EORA <dp    -           -           EORA <dp    EORD <dp    -
99 ADCA <dp    -           -           ADCA <dp    ADCD <dp    -
9A ORA  <dp    -           -           ORA  <dp    ORD  <dp    -
9B ADDA <dp    -           -           ADDA <dp    ADDW <dp    ADDE <dp
9C CMPX <dp    CMPY <dp    CMPS <dp    CMPX <dp    CMPY <dp    CMPS <dp
9D JSR  <dp    -           -           JSR  <dp    -           DIVD <dp
9E LDX  <dp    LDY  <dp    -           LDX  <dp    LDY  <dp    DIVQ <dp
9F STX  <dp    STY  <dp    -           STX  <dp    STY  <dp    MULD <dp
                                                               
A0 SUBA idx    -           -           SUBA idx    SUBW idx    SUBE idx
A1 CMPA idx    -           -           CMPA idx    CMPW idx    CMPE idx
A2 SBCA idx    -           -           SBCA idx    SBCD idx    -
A3 SUBD idx    CMPD idx    CMPU idx    SUBD idx    CMPD idx    CMPU idx
A4 ANDA idx    -           -           ANDA idx    ANDD idx    -
A5 BITA idx    -           -           BITA idx    BITD idx    -
A6 LDA  idx    -           -           LDA idx     LDW  idx    LDE  idx
A7 STA  idx    -           -           STA idx     STW  idx    STE  idx
A8 EORA idx    -           -           EORA idx    EORD idx    -
A9 ADCA idx    -           -           ADCA idx    ADCD idx    -
AA ORA  idx    -           -           ORA idx     ORD  idx    -
AB ADDA idx    -           -           ADDA idx    ADDW idx    ADDE idx
AC CMPX idx    CMPY idx    CMPS idx    CMPX idx    CMPY idx    CMPS idx
AD JSR  idx    -           -           JSR idx     -           DIVD idx
AE LDX  idx    LDY  idx    -           LDX idx     LDY  idx    DIVQ idx
AF STX  idx    STY  idx    -           STX idx     STY  idx    MULD idx
                                                               
B0 SUBA >ext   -           -           SUBA >ext   SUBW >ext   SUBE >ext
B1 CMPA >ext   -           -           CMPA >ext   CMPW >ext   CMPE >ext
B2 SBCA >ext   -           -           SBCA >ext   SBCD >ext   -
B3 SUBD >ext   CMPD >ext   CMPU >ext   SUBD >ext   CMPD >ext   CMPU >ext
B4 ANDA >ext   -           -           ANDA >ext   ANDD >ext   -
B5 BITA >ext   -           -           BITA >ext   BITD >ext   -
B6 LDA  >ext   -           -           LDA  >ext   LDW  >ext   LDE  >ext
B7 STA  >ext   -           -           STA  >ext   STW  >ext   STE  >ext
B8 EORA >ext   -           -           EORA >ext   EORD >ext   -
B9 ADCA >ext   -           -           ADCA >ext   ADCD >ext   -
BA ORA  >ext   -           -           ORA  >ext   ORD  >ext   -
BB ADDA >ext   -           -           ADDA >ext   ADDW >ext   ADDE >ext
BC CMPX >ext   CMPY >ext   CMPS >ext   CMPX >ext   CMPY >ext   CMPS >ext
BD JSR  >ext   -           -           JSR  >ext   -           DIVD >ext
BE LDX  >ext   LDY  >ext   -           LDX  >ext   LDY  >ext   DIVQ >ext
BF STX  >ext   LDS  >ext   -           STX  >ext   LDS  >ext   MULD >ext
                                                               
C0 SUBB #n     -           -           SUBB #n     -           SUBF #n
C1 CMPB #n     -           -           CMPB #n     -           CMPF #n
C2 SBCB #n     -           -           SBCB #n     -           -
C3 ADDD #n16   -           -           ADDD #n16   -           -
C4 ANDB #n     -           -           ANDB #n     -           -
C5 BITB #n     -           -           BITB #n     -           -
C6 LDB  #n     -           -           LDB  #n     -           LDF  #n
C7 -           -           -           -           -           -
C8 EORB #n     -           -           EORB #n     -           -
C9 ADCB #n     -           -           ADCB #n     -           -
CA ORB  #n     -           -           ORB  #n     -           -
CB ADDB #n     -           -           ADDB #n     -           ADDF #n
CC LDD  #n16   -           -           LDD  #n16   -           -
CD -           -           -           LDQ  #n32   -           -
CE LDU  #n16   LDS #n16    -           LDU  #n16   LDS #n16    -
CF -           -           -           -           -           -
                                                               
D0 SUBB <dp    -           -           SUBB <dp    -           SUBF <dp
D1 CMPB <dp    -           -           CMPB <dp    -           CMPF <dp
D2 SBCB <dp    -           -           SBCB <dp    -           -
D3 ADDD <dp    -           -           ADDD <dp    -           -
D4 ANDB <dp    -           -           ANDB <dp    -           -
D5 BITB <dp    -           -           BITB <dp    -           -
D6 LDB  <dp    -           -           LDB  <dp    -           LDF  <dp
D7 STB  <dp    -           -           STB  <dp    -           STF  <dp
D8 EORB <dp    -           -           EORB <dp    -           -
D9 ADCB <dp    -           -           ADCB <dp    -           -
DA ORB  <dp    -           -           ORB  <dp    -           -
DB ADDB <dp    -           -           ADDB <dp    -           ADDF <dp
DC LDD  <dp    -           -           LDD  <dp    LDQ  <dp     -
DD STD  <dp    -           -           STD  <dp    STQ  <dp     -
DE LDU  <dp    LDS <dp     -           LDU  <dp    LDS  <dp     -
DF STU  <dp    STS <dp     -           STU  <dp    STS  <dp     -
                                                               
E0 SUBB idx    -           -           SUBB idx    -           SUBF idx
E1 CMPB idx    -           -           CMPB idx    -           CMPF idx
E2 SBCB idx    -           -           SBCB idx    -           -
E3 ADDD idx    -           -           ADDD idx    -           -
E4 ANDB idx    -           -           ANDB idx    -           -
E5 BITB idx    -           -           BITB idx    -           -
E6 LDB  idx    -           -           LDB  idx    -           LDF  idx
E7 STB  idx    -           -           STB  idx    -           STF  idx
E8 EORB idx    -           -           EORB idx    -           -
E9 ADCB idx    -           -           ADCB idx    -           -
EA ORB  idx    -           -           ORB  idx    -           -
EB ADDB idx    -           -           ADDB idx    -           ADDF idx
EC LDD  idx    -           -           LDD  idx    LDQ  idx    -
ED STD  idx    -           -           STD  idx    STQ  idx    -
EE LDU  idx    LDS idx     -           LDU  idx    LDS  idx    -
EF STU  idx    STS idx     -           STU  idx    STS  idx    -
                                                               
F0 SUBB >ext   -           -           SUBB >ext   -           SUBF >ext
F1 CMPB >ext   -           -           CMPB >ext   -           CMPF >ext
F2 SBCB >ext   -           -           SBCB >ext   -           -
F3 ADDD >ext   -           -           ADDD >ext   -           -
F4 ANDB >ext   -           -           ANDB >ext   -           -
F5 BITB >ext   -           -           BITB >ext   -           -
F6 LDB  >ext   -           -           LDB  >ext   -           LDF  >ext
F7 STB  >ext   -           -           STB  >ext   -           STF  >ext
F8 EORB >ext   -           -           EORB >ext   -           -
F9 ADCB >ext   -           -           ADCB >ext   -           -
FA ORB  >ext   -           -           ORB  >ext   -           -
FB ADDB >ext   -           -           ADDB >ext   -           ADDF >ext
FC LDD  >ext   -           -           LDD  >ext   LDQ  >ext   -
FD STD  >ext   -           -           STD  >ext   STQ  >ext   -
FE LDU  >ext   LDS >ext    -           LDU  >ext   LDS  >ext   -
FF STU  >ext   STS >ext    -           STU  >ext   STS  >ext   -


n      - 8bit number
n16    - 16bit number
n32    - 32bit number
<dp     - 8bit direct page address
>extend - 16bit absolute address
rel    - 8bit relative offset
rel16  - 16bit relative offset
regs   - register map
idx  - idxed addressing mode, see n>ext table

Notes on opcodes
----------------
Opcodes with a * by them in the above list are 'undocumented'.



Idx addressing mode:
Specified by a post-byte, after the opcode and before any additional data.

0rrnnnnn   n,R
1rr00000   ,R+
1rr00001   ,R++
1rr00010   ,-R
1rr00011   ,--R
1rr00100   ,R
1rr00101   B,R
1rr00110   A,R
1??00111
1rr01000 nnnnnnnn   n,R
1rr01001 nnnnnnnn nnnnnnnn nn,R
1??01010
1rr01011   D,R
1xx01100 nnnnnnnn  n,PCR
1xx01101 nnnnnnnn nnnnnnnn  nn,PCR
1??01110
1??01111
1??10000
1rr10001   [,R++]
1??10010
1rr10011   [,--R]
1rr10100   [,R]
1rr10101   [B,R]
1rr10110   [A,R]
1??10111
1rr11000 nnnnnnnn [n,R]
1rr11001 nnnnnnnn nnnnnnnn  [nn,R]
1??11010
1rr11011   [D,R]         
1xx11100 nnnnnnnn [n,PCR]
1xx11101 nnnnnnnn nnnnnnnn [n,PCR]
1??11110
10011111 nnnnnnnn nnnnnnnn [nn]
10111111
11011111
11111111

rr=X,Y,U,S

5-bit positive offset from X in 6800 code translates to the same 5-bit
offset from X in 6809.

LDAA 1,X in 6800: 86 01
LDA  1,X in 6809: 86 0rr00001 where rr=0 gives: 86 01

It seems to be incredibly difficult to track down information on the
inctruction set for the 6809 and similar CPUs.  Even when information is
found it is really fiddly to understand.

The only difference between the 6809 and the 6809e is the pinouts.  The
instruction set is the same.

The 6309 is a further develpment by Hitatchi<?> with more instructions and
registers.

The 6800 series are bigendian, that is, multibyte values are stored in
memory with the most significant byte first.

Idx mode on the 6800 adds an offset to the 16bit X register to form the
address in memory of the data.

Idx mode on the 6809/6309 is complicated.  A byte follows the opcode
bytes(s) which indicates which register is idxed from and how that
idxing register is combined with the supplied offset.

It's quite fiddly and annoyingly difficult to track down accurate and
clear information.



LDA idx
E6 nn




">Extended": specifies memory address, data is contents of memory location.
Other CPUs call this "absolute".

"Direct": specifies an 8-bit address in zero page, later CPUs in "Direct
page".  6502 calls this Zero Page addressing

"Idxed": specifies 8-bit offset from value of X register.

r0,r1 - n>ext byte contains <r0:r1>





[The 6809 series of CPUs appears to have a really fiddly instruction set to
work out the opcodes for.  It also seems to be very difficult to actually
track down the required information to put together a document such as
this.]
HORRIBLE HORRIBLE HORRIBEL!
it(s getting easier, but God!, it's difficult tracking down info!

The only difference I can find between the 6809 and the 6809e is the
pinouts:
  6809:  Halt, XTAL, >EXTAL, Reset, MRDY, Q, E, DMA/BREQ
  6809e: Halt, TSC,  LIC,   Reset, AVMA, Q, E, Busy

Also, many instructions take a "post-byte" that specifies the source and
destination of the operation, effectively creating almost a 16-bit opcode
space.

Instructions seem to be the "wrong" way around.  For example, to add a
constant to a register is ADCA <dp,A rather than ADCA A,<dp.


References
Using The 6800 Processor, Elmer Poe.

the dragon docs detail undoc ops for 6809e.

Document History
Jun-1998 Started trying to track down 6809 documentation

arrgg!!!  horrible horribel horrible!!!