OPCODE

00000000: 46 72 6F 6D 20 77 69 78  65 72 21 63 61 63 74 75  |From wixer!cactu|
00000010: 73 2E 6F 72 67 21 6D 69  6C 61 6E 6F 21 63 73 2E  |s.org!milano!cs.|
00000020: 75 74 65 78 61 73 2E 65  64 75 21 75 75 6E 65 74  |utexas.edu!uunet|
00000030: 21 70 69 70 65 78 21 73  75 6E 69 63 21 6E 65 77  |!pipex!sunic!new|
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00000050: 72 2E 6F 75 6C 75 2E 66  69 21 6F 75 73 72 76 72  |r.oulu.fi!ousrvr|
00000060: 21 6A 6F 70 69 20 53 61  74 20 4D 61 72 20 20 36  |!jopi Sat Mar  6|
00000070: 20 32 31 3A 31 37 3A 32  37 20 31 39 39 33 0D 0A  | 21:17:27 1993..|
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000000A0: 77 69 78 65 72 21 63 61  63 74 75 73 2E 6F 72 67  |wixer!cactus.org|
000000B0: 21 6D 69 6C 61 6E 6F 21  63 73 2E 75 74 65 78 61  |!milano!cs.utexa|
000000C0: 73 2E 65 64 75 21 75 75  6E 65 74 21 70 69 70 65  |s.edu!uunet!pipe|
000000D0: 78 21 73 75 6E 69 63 21  6E 65 77 73 2E 66 75 6E  |x!sunic!news.fun|
000000E0: 65 74 2E 66 69 21 6F 75  73 72 76 72 2E 6F 75 6C  |et.fi!ousrvr.oul|
000000F0: 75 2E 66 69 21 6F 75 73  72 76 72 21 6A 6F 70 69  |u.fi!ousrvr!jopi|
00000100: 0D 0A 46 72 6F 6D 3A 20  6A 6F 70 69 40 73 74 65  |..From: jopi@ste|
00000110: 6B 74 2E 6F 75 6C 75 2E  66 69 20 28 4A 6F 75 6B  |kt.oulu.fi (Jouk|
00000120: 6F 20 56 61 6C 74 61 29  0D 0A 53 75 62 6A 65 63  |o Valta)..Subjec|
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00000150: 49 6E 2D 52 65 70 6C 79  2D 54 6F 3A 20 6D 61 73  |In-Reply-To: mas|
00000160: 73 69 76 65 40 6C 61 6B  65 73 2E 74 72 65 6E 74  |sive@lakes.trent|
00000170: 6F 6E 2E 73 63 2E 75 73  27 73 20 6D 65 73 73 61  |on.sc.us's messa|
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000001A0: 54 0D 0A 4D 65 73 73 61  67 65 2D 49 44 3A 20 3C  |T..Message-ID: <|
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00000200: 6E 69 7A 61 74 69 6F 6E  3A 20 55 6E 69 76 65 72  |nization: Univer|
00000210: 73 69 74 79 20 6F 66 20  4F 75 6C 75 2C 20 44 65  |sity of Oulu, De|
00000220: 70 74 2E 20 6F 66 20 45  45 2C 20 46 69 6E 6C 61  |pt. of EE, Finla|
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00000270: 3A 20 63 6F 6D 70 0D 0A  44 61 74 65 3A 20 46 72  |: comp..Date: Fr|
00000280: 69 2C 20 35 20 4D 61 72  20 31 39 39 33 20 31 39  |i, 5 Mar 1993 19|
00000290: 3A 33 36 3A 34 36 20 47  4D 54 0D 0A 0D 0A 49 6E  |:36:46 GMT....In|
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00000310: 20 61 20 74 65 73 74 2C  20 70 6C 65 61 73 65 20  | a test, please |
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00000330: 55 6E 64 6F 63 75 6D 65  6E 74 65 64 20 4F 70 63  |Undocumented Opc|
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00000450: 65 6C 6C 2C 20 49 20 77  6F 75 6C 64 20 6C 69 6B  |ell, I would lik|
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000004C0: 20 74 6F 20 63 6F 70 65  0D 0A 20 20 20 77 69 74  | to cope..   wit|
000004D0: 68 20 6F 75 72 20 64 65  63 69 73 69 6F 6E 20 2E  |h our decision .|
000004E0: 2E 2E 0D 0A 0D 0A 0D 0A  3E 20 41 58 53 20 20 61  |........> AXS  a|
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00000510: 3E 0D 0A 3E 20 4F 70 65  72 61 74 6F 6E 3A 20 20  |>..> Operaton:  |
00000520: 41 20 26 20 58 20 2D 3E  20 53 20 09 20 20 20 20  |A & X -> S .    |
00000530: 20 4E 5A 43 49 44 56 0D  0A 3E 09 20 20 20 20 20  | NZCIDV..>.     |
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00000550: 20 20 20 20 20 20 20 20  78 78 2D 2D 2D 2D 0D 0A  |        xx----..|
00000560: 0D 0A 20 20 47 75 65 73  73 20 77 68 61 74 20 68  |..  Guess what h|
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00000600: 20 3C 2D 3E 20 4C 53 52  2C 20 20 52 4F 4C 20 3C  | <-> LSR,  ROL <|
00000610: 2D 3E 20 41 53 4C 20 65  74 63 2E 0D 0A 20 20 48  |-> ASL etc...  H|
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00000660: 4E 6F 74 20 61 6C 6C 20  6F 66 20 74 68 65 73 65  |Not all of these|
00000670: 20 68 61 76 65 20 62 65  65 6E 20 74 65 73 74 65  | have been teste|
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00000CC0: 2B 31 20 73 74 61 6E 64  73 20 66 6F 72 20 74 68  |+1 stands for th|
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00000D20: 0A 3E 20 0D 0A 3E 20 57  65 6C 6C 20 74 68 65 72  |.> ..> Well ther|
00000D30: 65 20 79 6F 75 20 68 61  76 65 20 69 74 20 61 20  |e you have it a |
00000D40: 64 6F 63 75 6D 65 6E 74  65 64 20 6C 69 73 74 20  |documented list |
00000D50: 6F 66 20 74 68 65 20 36  35 31 30 20 75 6E 64 6F  |of the 6510 undo|
00000D60: 63 75 6D 6E 74 65 64 20  4F 50 20 63 6F 64 65 73  |cumnted OP codes|
00000D70: 2E 0D 0A 3E 20 4E 6F 20  57 61 72 72 61 6E 74 69  |...> No Warranti|
00000D80: 65 73 20 69 6D 70 6C 69  65 64 2E 20 4E 6F 20 4D  |es implied. No M|
00000D90: 6F 6E 65 79 20 42 61 63  6B 2E 0D 0A 0D 0A 0D 0A  |oney Back.......|
00000DA0: 20 20 57 65 6C 6C 2C 20  74 68 69 73 20 69 73 20  |  Well, this is |
00000DB0: 74 68 65 20 76 65 72 73  69 6F 6E 20 49 27 76 65  |the version I've|
00000DC0: 20 62 65 65 6E 20 75 73  69 6E 67 20 74 68 69 73  | been using this|
00000DD0: 20 66 61 72 3A 0D 0A 20  20 41 6E 64 20 79 65 73  | far:..  And yes|
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00000E50: 65 73 73 69 6E 67 20 6D  6F 64 65 73 0D 0A 0D 0A  |essing modes....|
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00000E70: 76 65 20 2B 2B 2B 2B 2B  2B 2B 2B 2B 2B 09 2D 2D  |ve ++++++++++.--|
00000E80: 2D 2D 2D 2D 2D 2D 20 4E  65 67 61 74 69 76 65 20  |------ Negative |
00000E90: 2D 2D 2D 2D 2D 2D 2D 2D  2D 2D 0D 0A 09 30 30 09  |----------...00.|
00000EA0: 32 30 09 34 30 09 36 30  09 38 30 09 61 30 09 63  |20.40.60.80.a0.c|
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00000EE0: 58 20 20 49 6D 70 6C 2F  69 6D 6D 65 64 0D 0A 2B  |X  Impl/immed..+|
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00000F10: 42 43 20 20 28 69 6E 64  69 72 2C 78 29 0D 0A 2B  |BC  (indir,x)..+|
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00001410: 50 2A 09 4E 4F 50 2A 09  4E 4F 50 2A 09 53 48 59  |P*.NOP*.NOP*.SHY|
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00001430: 20 41 62 73 6F 6C 75 74  65 2C 78 0D 0A 2B 31 64  | Absolute,x..+1d|
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00001540: 35 31 30 20 55 6E 64 6F  63 75 6D 65 6E 74 65 64  |510 Undocumented|
00001550: 20 43 6F 6D 6D 61 6E 64  73 0D 0A 0D 0A 0D 0A 09  | Commands.......|
00001560: 41 4E 45 20 24 38 42 09  09 41 43 20 3D 20 28 41  |ANE $8B..AC = (A|
00001570: 43 20 7C 20 23 24 45 45  29 20 26 20 58 52 20 26  |C | #$EE) & XR &|
00001580: 20 23 62 79 74 65 0D 0A  09 09 09 41 43 20 3D 20  | #byte.....AC = |
00001590: 28 28 41 43 20 26 20 23  24 31 31 20 26 20 58 52  |((AC & #$11 & XR|
000015A0: 29 20 7C 20 28 20 23 24  45 45 20 26 20 58 52 29  |) | ( #$EE & XR)|
000015B0: 29 20 26 20 23 62 79 74  65 0D 0A 0D 0A 09 09 09  |) & #byte.......|
000015C0: 49 6E 20 72 65 61 6C 20  36 35 31 30 2F 38 35 30  |In real 6510/850|
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00001A60: 73 75 6C 74 73 2E 0D 0A  0D 0A 20 20 20 6F 20 20  |sults.....   o  |
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00001AF0: 0A 0D 0A 0D 0A 20 4E 4F  54 45 53 0D 0A 20 53 65  |..... NOTES.. Se|
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00001B40: 72 6D 61 74 69 6F 6E 2E  0D 0A 0D 0A 20 52 65 66  |rmation..... Ref|
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00001B60: 20 42 6C 6F 63 6B 20 44  69 61 67 72 61 6D 20 20  | Block Diagram  |
00001B70: 20 43 36 34 20 50 72 6F  67 72 61 6D 6D 65 72 27  | C64 Programmer'|
00001B80: 73 20 52 65 66 65 72 65  6E 63 65 20 47 75 69 64  |s Reference Guid|
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00001BA0: 74 72 75 63 74 69 6F 6E  20 53 65 74 20 20 20 20  |truction Set    |
00001BB0: 20 20 43 36 34 20 50 72  6F 67 72 61 6D 6D 65 72  |  C64 Programmer|
00001BC0: 27 73 20 52 65 66 65 72  65 6E 63 65 20 47 75 69  |'s Reference Gui|
00001BD0: 64 65 20 70 70 2E 20 34  31 36 2D 34 31 37 0D 0A  |de pp. 416-417..|
00001BE0: 20 20 09 09 09 22 43 2D  4C 65 68 74 69 22 20 6D  |  ..."C-Lehti" m|
00001BF0: 61 67 61 7A 69 6E 65 20  34 2F 38 37 09 0D 0A 20  |agazine 4/87... |
00001C00: 20 0D 0A 0D 0A 20 20 20  2A 28 61 2B 2B 29 2B 3D  | ....   *(a++)+=|
00001C10: 2D 2D 6A 6F 70 69 28 29  3B 20 20 20 20 20 2F 2A  |--jopi();     /*|
00001C20: 20 6A 6F 70 69 40 7B 73  74 65 6B 74 2C 7A 6F 6D  | jopi@{stekt,zom|
00001C30: 62 69 65 7D 2E 6F 75 6C  75 2E 66 69 20 2A 2F 0D  |bie}.oulu.fi */.|
00001C40: 0A 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |.               |
00001C50: 20 20 20 20 20 20 20 20  20 20 2F 2A 20 2D 2D 20  |          /* -- |
00001C60: 74 68 65 20 6D 6F 73 74  20 64 69 73 6F 72 69 65  |the most disorie|
00001C70: 6E 74 65 64 20 75 73 65  72 20 2A 2F 0D 0A 5F 5F  |nted user */..__|
00001C80: 5F 5F 5F 5F 5F 5F 5F 5F  5F 5F 5F 5F 5F 5F 5F 5F  |________________|
00001C90: 5F 5F 5F 5F 5F 5F 5F 5F  5F 5F 5F 5F 5F 5F 5F 5F  |________________|
00001CA0: 5F 5F 5F 5F 5F 5F 5F 5F  5F 5F 5F 5F 5F 5F 5F 5F  |________________|
00001CB0: 5F 5F 5F 5F 5F 5F 5F 5F  5F 5F 5F 5F 5F 5F 5F 5F  |________________|
00001CC0: 5F 5F 5F 5F 5F 5F 5F 5F  0D 0A 20 20 20 20 20 20  |________..      |
00001CD0: 20 20 2A 2A 2A 20 20 41  20 72 65 61 6C 20 48 61  |  ***  A real Ha|
00001CE0: 63 6B 65 72 20 6E 65 76  65 72 20 76 61 63 75 75  |cker never vacuu|
00001CF0: 6D 2D 63 6C 65 61 6E 73  20 68 69 73 20 63 6F 6D  |m-cleans his com|
00001D00: 70 75 74 65 72 20 21 21  20 20 2A 2A 2A 0D 0A 0D  |puter !!  ***...|
00001D10: 0A                                                |.               |

FROM WIXER!CACTUS.ORG!MILANO!CS.UTEXAS.E
DU!UUNET!PIPEX!SUNIC!NEWS.FUNET.FI!OUSRV
R.OULU.FI!OUSRVR!JOPI SAT MAR  6 21:17:2
7 1993..NEWSGROUPS: COMP.SYS.CBM..PATH: 
WIXER!CACTUS.ORG!MILANO!CS.UTEXAS.EDU!UU
NET!PIPEX!SUNIC!NEWS.FUNET.FI!OUSRVR.OUL
U.FI!OUSRVR!JOPI..FROM: JOPI@STEKT.OULU.
FI (JOUKO VALTA)..SUBJECT: RE: UUENCODED
 UNDOC OPCODES..IN-REPLY-TO: MASSIVE@LAK
ES.TRENTON.SC.US'S MESSAGE OF FRI, 05 MA
R 93 02:12:41 EST..MESSAGE-ID: <JOPI.93M
AR5213646@STEKT5.OULU.FI>..LINES: 202..S
ENDER: NEWS@OUSRVR.OULU.FI..ORGANIZATION
: UNIVERSITY OF OULU, DEPT. OF EE, FINLA
ND..REFERENCES: <UJGXZB6W165W@LAKES.TREN
TON.SC.US>..DISTRIBUTION: COMP..DATE: FR
I, 5 MAR 1993 19:36:46 GMT....IN ARTICLE
 <UJGXZB6W165W@LAKES.TRENTON.SC.US> MASS
IVE@LAKES.TRENTON.SC.US (MASSIVE ONSLAUG
HT) WRITES:.... (THIS IS A TEST, PLEASE 
FLAME ;)......>.UNDOCUMENTED OPCODES..>.
.> AAX AND ACCUMULATOR WITH X..> ..> OPE
RATON: A & X -> M.    .NZCIDV..>....XX--
--....   ALSO KNOWN AS SAX (STORE A & X)
..   BUT IF I HAVEN'T MISUNDERSTOOD THE 
SIGNS, THIS INSTRUCTION ..   DOES NOT SE
T ANY FLAGS SINCE IT'S LOCATED IN THE "S
TORE" SECTION.  ....   WELL, I WOULD LIK
E TO KNOW WHICH NAME SHOULD BE USED ?.. 
  PLEASE TELL ME WHAT IS YOUR OPINION, S
INCE YOU'LL HAVE TO COPE..   WITH OUR DE
CISION .........> AXS  AND ACCUMULATOR W
ITH X TO STACK..>..> OPERATON:  A & X ->
 S .     NZCIDV..>.     A & X & $11 -> M
        XX----....  GUESS WHAT HAPPENED 
WHEN A 8502 DECIDED TO PULL STACK INSTEA
D .....  IN FACT IT "CROSSED OVER" THE W
HOLE UNDOCUMENTED PART OF THE INSTRUCTIO
N..  SET IE. ROR <-> LSR,  ROL <-> ASL E
TC...  HAS ANYONE ELSE GOT SIMILIAR RESU
LTS ?......> A WORD OF WARNING. NOT ALL 
OF THESE HAVE BEEN TESTED. THE FLAG SETT
INGS..> SHOULD BE CORRECT, ONCE AGAIN AL
L THREE QUINTRILLION POSSIBILITIES HAVE.
.> NOT BEEN TESTED. AS YOU CAN SEE I DID
 NOT RESEACH THE NUMBER OF CYCLES USED..
.> IF CYCLES COULD BE RESEARCHED, OR ANY
THING ELSE IS FOUND INCORRECT, PLEASE..>
 LET ME NOW SO I CAN UPDATE MY FILE.....
..   FULL DOCUMENTATION IS FOUND ON C-HA
CKING ISSUE 1.....> ..> SOME NOTES ON TH
E VARIOUS OP CODES...> ..>  CRS -  THESE
 DO NOTHIG EXCEPT CRASH THE..>       COM
PUTER, HARD!......   IT JUST TRIGGERS TH
E THYRISTORS WHICH INTERLOCK THE BUSSES.
....     SO ALL YOU CAN DO IS TO SWITCH 
OFF THE POWER.......>  DCP  - DECREMENT 
THE MEMORY FIRST, THEN..>       COMPARE 
IT TO THE ACCUM...>  ISB  - ICREMENT THE
 MEMORY FIRST, THEN..>       DO A NORMAL
 SBC. FOR EXAMPE ..>       ISB #11 WOULD
 BE THE SAME AS..>       SBC #12...>  LA
N  - ROLLS MEMORY TO THE LEFT, THAN..>  
     ANDS THE RESULT WITH THE ACCUM...> 
 NOP  - ALL THESE ARE NOP REPLACEMENTS..
.>       THE NUMBER OF CYCLES MAY BE ..>
       DIFFERENT...>  RAM  - AND ACCUM W
ITH MEMORY THE ROTATE..>       RESULT TO
 RIGHT. THE 7TH BIT..>       BECOMES THE
 CARRY, AND THE CARRY..>       BECOMES T
HE 7TH BIT OF THE ACCUM...>       REMEMB
ER THE CARRY BECOMES THE..>       7TH BI
T OF THE ORIGINAL ACCUM,..>       NOT TH
E RESULT...>  RBM  - AND ACCUM WITH MEMO
RY AND SHIFT..>       TO THE LEFT. THE C
ARRY BECOMES ..>       1ST BIT OF THE AN
D...>  SBC  - THIS IS EXACTLY THE SAME A
S THE..>       DOCUMENTED SBC OP...>  SK
P  - THIS IS SIMILAR TO THE BIT OP..>   
    EXCEPT IT DOES NOT CHANGE ANY ..>   
    FLAGS...>  TEA  - THESE ARE INTESTIN
G OPS. THE ..>  TEX  - >+1 STANDS FOR TH
E HIGH OPERAND..>  TEY  - FOR EXAMPLE TE
A $C000,Y THE >+1..>       WILL BE $C1..
.> ..> WELL THERE YOU HAVE IT A DOCUMENT
ED LIST OF THE 6510 UNDOCUMNTED OP CODES
...> NO WARRANTIES IMPLIED. NO MONEY BAC
K.......  WELL, THIS IS THE VERSION I'VE
 BEEN USING THIS FAR:..  AND YES, SEVERA
L PEOPLE HAVE TESTED *ALL THESE* :)..   
I HAVE TESTED BOTH 6510 AND 8502.......6
510 INSTRUCTIONS BY ADDRESSING MODES....
.++++++++ POSITIVE ++++++++++.-------- N
EGATIVE ----------...00.20.40.60.80.A0.C
0.E0.MODE....+00.BRK.JSR.RTI.RTS.NOP*.LD
Y.CPY.CPX  IMPL/IMMED..+01.ORA.AND.EOR.A
DC.STA.LDA.CMP.SBC  (INDIR,X)..+02. T. T
. T. T.NOP*.LDX.NOP*.NOP*   ? /IMMED..+0
3.SLO*.RLA*.SRE*.RRA*.SAX*.LAX*.DCP*.ISB
* (INDIR,X)..+04.NOP*.BIT.NOP*.NOP*.STY.
LDY.CPY.CPX  ZEROPAGE..+05.ORA.AND.EOR.A
DC.STA.LDA.CMP.SBC.-"-..+06.ASL.ROL.LSR.
ROR.STX.LDX.DEC.INC.-"-..+07.SLO*.RLA*.S
RE*.RRA*.SAX*.LAX*.DCP*.ISB*.-"-....+08.
PHP.PLP.PHA.PLA.DEY.TAY.INY.INX  IMPLIED
..+09.ORA.AND.EOR.ADC.NOP*.LDA.CMP.SBC  
IMMEDIATE..+0A.ASL.ROL.LSR.ROR.TXA.TAX.D
EX.NOP  ACCU/IMPL..+0B.ANC**.ANC**.ASR**
.ARR**.ANE**.LXA**.SBX**.SBC* IMMEDIATE.
.+0C.NOP*.BIT.JMP.JMP.STY.LDY.CPY.CPX  A
BSOLUTE..+0D.ORA.AND.EOR.ADC.STA.LDA.CMP
.SBC.-"-..+0E.ASL.ROL.LSR.ROR.STX.LDX.DE
C.INC.-"-..+0F.SLO*.RLA*.SRE*.RRA*.SAX*.
LAX*.DCP*.ISB*.-"-....+10.BPL.BMI.BVC.BV
S.BCC.BCS.BNE.BEQ  RELATIVE..+11.ORA.AND
.EOR.ADC.STA.LDA.CMP.SBC  (INDIR),Y..+12
. T. T. T. T. T. T. T. T.?..+13.SLO*.RLA
*.SRE*.RRA*.SHA**.LAX*.DCP*.ISB* (INDIR)
,Y..+14.NOP*.NOP*.NOP*.NOP*.STY.LDY.NOP*
.NOP* ZEROPAGE,X..+15.ORA.AND.EOR.ADC.ST
A.LDA.CMP.SBC.-"-..+16.ASL.ROL.LSR.ROR.S
TX Y).LDX Y).DEC.INC.-"-..+17.SLO*.RLA*.
SRE*.RRA*.SAX* Y).LAX* Y).DCP.ISB.-"-...
.+18.CLC.SEC.CLI.SEI.TYA.CLV.CLD.SED  IM
PLIED..+19.ORA.AND.EOR.ADC.STA.LDA.CMP.S
BC  ABSOLUTE,Y..+1A.NOP*.NOP*.NOP*.NOP*.
TXS.TSX.NOP*.NOP* IMPLIED..+1B.SLO*.RLA*
.SRE*.RRA*.SHS**.LAS**.DCP*.ISB* ABSOLUT
E,Y..+1C.NOP*.NOP*.NOP*.NOP*.SHY**.LDY.N
OP*.NOP* ABSOLUTE,X..+1D.ORA.AND.EOR.ADC
.STA.LDA.CMP.SBC.-"-..+1E.ASL.ROL.LSR.RO
R.SHX**Y).LDX Y).DEC.INC.-"-..+1F.SLO*.R
LA*.SRE*.RRA*.SHA**Y).LAX* Y).DCP.ISB.-"
-.....T.JAMS THE MACHINE...*.UNDOCUMENTE
D COMMAND...**.UNUSUAL OPERATION...Y).IN
DEXED USING YR INSTEAD OF XR...........6
510 UNDOCUMENTED COMMANDS.......ANE $8B.
.AC = (AC | #$EE) & XR & #BYTE.....AC = 
((AC & #$11 & XR) | ( #$EE & XR)) & #BYT
E.......IN REAL 6510/8502 THE INTERNAL P
ARAMETER #$11 MAY.....OCCASIONALLY BE #$
10, #$01 OR EVEN #$00........SHA $93,$9F
     STORE (AC & XR & (ADDR_HI +1))...SH
X $9E.. -"-.  XR...SHY $9C . -"-.  YR...
SHS $9B. .SHA AND TXS, WHERE X IS REPLAC
ED BY (AC & XR)........NOTE: THE VALUE T
O BE STORED IS COPIED ALSO.....TO ADDR_H
I IF PAGE BOUNDARY IS CROSSED........LXA
 $AB .C-LEHTI: AC AND XR = ANE.....TESTE
D:  AC AND XR = (AC & #BYTE).....SBX $CB
. .CARRY FLAG IS IGNORED BUT SET IN SUBS
TRACTION......THIS MAY BE DUE TO CMP COM
MAND, WHICH IS USED.....INSTEAD OF THE R
EAL SBC........SHA IS VERY STRANGE COMMA
ND SINCE IT IS THE ONLY COMMAND WHICH HA
S...ONLY INDEXED ADDRESSING MODES !.... 
  <SORRY, THE REST OF THIS ARTICLE IS NO
T TRANSLATED YET>...... 6510 BUGS..   O 
 THE BREAK (B) FLAG IS SET WHEN SR IS PU
SHED TO STACK. IN FACT THIS..      IS TH
E VALUE OF THE IRQ INPUT BUFFER.....   O
  JMP INDIRECT HANDLES PAGE BOUNDARY CRO
SSING INCORRECTLY....   O  ADC AND SBC S
ET THE NEGATIVE (N) OVERFLOW (V) AND ZER
O (Z) FLAGS..      ACCORDING TO THE BINA
RY MODE ALSO WHILE OPERATING IN DECIMAL 
MODE...      ALSO, ADDING OR SUBTRACTING
 FIGURES BETWEEN 0XA AND 0XF IN DECIMAL.
.      MODE MAY CAUSE STRANGE RESULTS...
..   O  BRK READS AN ABSOLUTE ADDRESS LI
KE JSR BUT IGNORES IT.....   O  SOME UND
EFINED OPCODES MAY GIVE REALLY UNPREDICT
ABLE RESULTS......... NOTES.. SEE MCS 65
00 MICROCOMPUTER FAMILY PROGRAMMING MANU
AL FOR MORE INFORMATION..... REFERENCES:
..  6510 BLOCK DIAGRAM   C64 PROGRAMMER'
S REFERENCE GUIDE  P. 404..  INSTRUCTION
 SET      C64 PROGRAMMER'S REFERENCE GUI
DE PP. 416-417..  ..."C-LEHTI" MAGAZINE 
4/87...  ....   *(A++)+=--JOPI();     /*
 JOPI@{STEKT,ZOMBIE}.OULU.FI */..       
                  /* -- THE MOST DISORIE
NTED USER */..__________________________
________________________________________
________..        ***  A REAL HACKER NEV
ER VACUUM-CLEANS HIS COMPUTER !!  ***...
.

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