_  __   _  _         _ _     _      _           _           
  __| |/ /_ | || |     __| (_)___| | __ (_)_ __   __| | _____  __
 / _` | '_ \| || |_   / _` | / __| |/ / | | '_ \ / _` |/ _ \ \/ /
| (_| | (_) |__   _| | (_| | \__ \   <  | | | | | (_| |  __/>  < 
 \__,_|\___/   |_|    \__,_|_|___/_|\_\ |_|_| |_|\__,_|\___/_/\_\

CPY.D

FILE INFORMATION

FILENAME(S): CPY.D

FILE TYPE(S): SEQ

FILE SIZE: 454b

FIRST SEEN: 2025-11-02 16:39:56

APPEARS ON: 4 disk(s)

FILE HASH

af6905c37a82d5590018fd720d31d3bff90d7d2c56499ff94454a8452223073a

FOUND ON DISKS (4 DISKS)

DISK TITLE FILENAME FILE TYPE COLLECTION TRACK SECTOR ACTIONS
1 CPY.D SEQ Treasure Chest - Plattfuss 22 1 DOWNLOAD FILE
U TILITES CPY.D SEQ Treasure Chest - Wolfgang Rauprich 22 11 DOWNLOAD FILE
FREEWARE DISK NR CPY.D SEQ Treasure Chest - Wolfgang Rauprich 22 11 DOWNLOAD FILE
OP CODE TUTOR CPY.D SEQ High Voltage Complete C64 Collection 14 19 DOWNLOAD FILE

FILE CONTENT & ANALYSIS

00000000: 22 20 20 20 20 20 20 20  20 20 20 20 20 20 20 CF  |"              .|
00000010: 50 43 4F 44 45 3A 20 C3  D0 D9 0D 22 20 20 20 20  |PCODE: ...."    |
00000020: 20 20 20 20 20 20 20 20  20 20 2D 2D 2D 2D 2D 2D  |          ------|
00000030: 2D 2D 2D 2D 2D 0D 22 0D  22 0D 22 CF 50 45 52 41  |-----.".".".PERA|
00000040: 54 49 4F 4E 3A 20 20 C3  D0 D9 20 20 41 46 46 45  |TION:  ...  AFFE|
00000050: 43 54 53 20 20 54 48 52  45 45 20 20 46 4C 41 47  |CTS  THREE  FLAG|
00000060: 53 0D 22 4F 4E 4C 59 2C  20 4C 45 41 56 49 4E 47  |S."ONLY, LEAVING|
00000070: 20 54 48 45 20 52 45 47  49 53 54 45 52 53 20 20  | THE REGISTERS  |
00000080: 41 4E 44 20 20 44 41 54  41 0D 22 49 4E 54 41 43  |AND  DATA."INTAC|
00000090: 54 2E 20 20 D4 48 45 20  42 59 54 45 20 20 52 45  |T.  .HE BYTE  RE|
000000A0: 46 45 52 45 4E 43 45 44  20 20 42 59 20 20 54 48  |FERENCED  BY  TH|
000000B0: 45 0D 22 4F 50 43 4F 44  45 20 49 53 20 53 55 42  |E."OPCODE IS SUB|
000000C0: 54 52 41 43 54 45 44 20  46 52 4F 4D 20 D9 2C 20  |TRACTED FROM ., |
000000D0: 20 41 4E 44 20 20 54 48  45 0D 22 46 4C 41 47 53  | AND  THE."FLAGS|
000000E0: 20 CE 2C 20 C1 2C 20 41  4E 44 20 C3 20 53 45 54  | ., ., AND . SET|
000000F0: 20 44 45 50 45 4E 44 49  4E 47 20 4F 4E 20 54 48  | DEPENDING ON TH|
00000100: 45 0D 22 52 45 53 55 4C  54 2E 20 20 C1 50 41 52  |E."RESULT.  .PAR|
00000110: 54 20 46 52 4F 4D 20 54  48 45 20 55 53 45 20 20  |T FROM THE USE  |
00000120: 4F 46 20 20 D9 20 20 49  4E 0D 22 50 4C 41 43 45  |OF  .  IN."PLACE|
00000130: 20 20 4F 46 20 20 D8 2C  20 20 20 57 49 54 48 20  |  OF  .,   WITH |
00000140: 20 20 54 48 45 20 20 20  52 45 53 55 4C 54 49 4E  |  THE   RESULTIN|
00000150: 47 0D 22 41 53 59 4D 4D  45 54 52 59 20 20 49 4E  |G."ASYMMETRY  IN|
00000160: 20 20 54 48 45 20 20 49  4D 50 4C 45 4D 45 4E 54  |  THE  IMPLEMENT|
00000170: 41 54 49 4F 4E 20 20 4F  46 0D 22 41 44 44 52 45  |ATION  OF."ADDRE|
00000180: 53 53 49 4E 47 2C 20 54  48 49 53 20 4F 50 43 4F  |SSING, THIS OPCO|
00000190: 44 45 20 20 49 53 20 20  49 44 45 4E 54 49 43 41  |DE  IS  IDENTICA|
000001A0: 4C 0D 22 49 4E 20 49 54  53 20 45 46 46 45 43 54  |L."IN ITS EFFECT|
000001B0: 53 20 54 4F 20 C3 D0 D8  0D 22 0D 22 5A 5A 5A 5A  |S TO ...."."ZZZZ|
000001C0: 5A 0D 0D 80 0D 0A                                 |Z.....          |

"              OPCODE: CPY."            
  -----------."."."OPERATION:  CPY  AFFE
CTS  THREE  FLAGS."ONLY, LEAVING THE REG
ISTERS  AND  DATA."INTACT.  THE BYTE  RE
FERENCED  BY  THE."OPCODE IS SUBTRACTED 
FROM Y,  AND  THE."FLAGS N, A, AND C SET
 DEPENDING ON THE."RESULT.  APART FROM T
HE USE  OF  Y  IN."PLACE  OF  X,   WITH 
  THE   RESULTING."ASYMMETRY  IN  THE  I
MPLEMENTATION  OF."ADDRESSING, THIS OPCO
DE  IS  IDENTICAL."IN ITS EFFECTS TO CPX
."."ZZZZZ.....
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