DEC.D
FILE INFORMATION
FILENAME(S): DEC.D
FILE TYPE(S): SEQ
FILE SIZE: 548b
FIRST SEEN: 2025-11-02 16:39:56
APPEARS ON: 4 disk(s)
FILE HASH
bfad31d126f0a8eeac0be1792ee219f0ff23e68e7dd32c7fd68db5019a3e8395
FOUND ON DISKS (4 DISKS)
| DISK TITLE | FILENAME | FILE TYPE | COLLECTION | TRACK | SECTOR | ACTIONS |
|---|---|---|---|---|---|---|
| 1 | DEC.D | SEQ | Treasure Chest - Plattfuss | 22 | 3 | DOWNLOAD FILE |
| U TILITES | DEC.D | SEQ | Treasure Chest - Wolfgang Rauprich | 22 | 17 | DOWNLOAD FILE |
| FREEWARE DISK NR | DEC.D | SEQ | Treasure Chest - Wolfgang Rauprich | 22 | 17 | DOWNLOAD FILE |
| OP CODE TUTOR | DEC.D | SEQ | High Voltage Complete C64 Collection | 22 | 1 | 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 C4 C5 C3 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 D4 48 45 20 20 42 59 54 45 |TION: .HE BYTE| 00000050: 20 20 52 45 46 45 52 52 45 4E 43 45 44 20 20 42 | REFERRENCED B| 00000060: 59 0D 22 54 48 45 20 41 44 44 52 45 53 53 49 4E |Y."THE ADDRESSIN| 00000070: 47 20 4D 4F 44 45 20 49 53 20 44 45 43 52 45 4D |G MODE IS DECREM| 00000080: 45 4E 54 45 44 20 20 42 59 0D 22 31 2C 20 53 45 |ENTED BY."1, SE| 00000090: 54 54 49 4E 47 20 54 48 45 20 CE 20 46 4C 41 47 |TTING THE . FLAG| 000000A0: 20 41 4E 44 20 54 48 45 20 DA 20 20 46 4C 41 47 | AND THE . FLAG| 000000B0: 2E 0D 22 C9 46 20 54 48 45 20 42 59 54 45 20 20 |..".F THE BYTE | 000000C0: 43 4F 4E 54 41 49 4E 45 44 20 20 41 4E 59 54 48 |CONTAINED ANYTH| 000000D0: 49 4E 47 20 20 46 52 4F 4D 0D 22 23 38 31 20 54 |ING FROM."#81 T| 000000E0: 4F 20 23 30 2C 20 41 46 54 45 52 20 C4 C5 C3 20 |O #0, AFTER ... | 000000F0: 54 48 45 20 CE 20 20 46 4C 41 47 20 20 57 49 4C |THE . FLAG WIL| 00000100: 4C 0D 22 42 45 20 53 45 54 3B 20 48 4F 57 45 56 |L."BE SET; HOWEV| 00000110: 45 52 2C 20 DA 20 57 49 4C 4C 20 20 42 45 20 20 |ER, . WILL BE | 00000120: 30 20 20 45 58 43 45 50 54 0D 22 46 4F 52 20 54 |0 EXCEPT."FOR T| 00000130: 48 45 20 4F 4E 45 20 43 41 53 45 20 57 48 45 52 |HE ONE CASE WHER| 00000140: 45 20 49 54 53 20 20 56 41 4C 55 45 20 20 57 41 |E ITS VALUE WA| 00000150: 53 0D 22 23 31 20 42 45 46 4F 52 45 20 54 48 45 |S."#1 BEFORE THE| 00000160: 20 44 45 43 52 45 4D 45 4E 54 2E 20 20 D0 52 4F | DECREMENT. .RO| 00000170: 42 41 42 4C 59 20 23 C6 C6 0D 22 49 53 20 20 41 |BABLY #..."IS A| 00000180: 44 44 45 44 20 20 57 49 54 48 49 4E 20 20 54 48 |DDED WITHIN TH| 00000190: 45 20 20 43 48 49 50 20 20 20 49 54 53 45 4C 46 |E CHIP ITSELF| 000001A0: 2C 0D 22 53 45 54 54 49 4E 47 20 CE 20 41 4E 44 |,."SETTING . AND| 000001B0: 20 DA 20 4F 4E 20 54 48 45 20 20 52 45 53 55 4C | . ON THE RESUL| 000001C0: 54 2E 20 20 20 CE 4F 54 45 0D 22 54 48 41 54 20 |T. .OTE."THAT | 000001D0: 20 54 48 45 20 20 43 41 52 52 59 20 20 42 49 54 | THE CARRY BIT| 000001E0: 20 20 20 49 53 20 20 20 55 4E 43 48 41 4E 47 45 | IS UNCHANGE| 000001F0: 44 0D 22 49 52 52 45 53 50 45 43 54 49 56 45 20 |D."IRRESPECTIVE | 00000200: 4F 46 20 54 48 45 20 4F 55 54 43 4F 4D 45 20 4F |OF THE OUTCOME O| 00000210: 46 20 C4 C5 C3 2E 0D 22 0D 22 5A 5A 5A 5A 5A 0D |F ....."."ZZZZZ.| 00000220: 0D 80 0D 0A |.... |
" OPCODE: DEC." -----------."."."OPERATION: THE BYTE REFERRENCED BY."THE ADDRESSING MODE I S DECREMENTED BY."1, SETTING THE N FLAG AND THE Z FLAG.."IF THE BYTE CONTAINE D ANYTHING FROM."#81 TO #0, AFTER DEC THE N FLAG WILL."BE SET; HOWEVER, Z WI LL BE 0 EXCEPT."FOR THE ONE CASE WHER E ITS VALUE WAS."#1 BEFORE THE DECREME NT. PROBABLY #FF."IS ADDED WITHIN TH E CHIP ITSELF,."SETTING N AND Z ON TH E RESULT. NOTE."THAT THE CARRY BIT IS UNCHANGED."IRRESPECTIVE OF THE O UTCOME OF DEC.."."ZZZZZ.....
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