JSR.D
FILE INFORMATION
FILENAME(S): JSR.D
FILE TYPE(S): SEQ
FILE SIZE: 523b
FIRST SEEN: 2025-11-02 16:39:56
APPEARS ON: 4 disk(s)
FILE HASH
8d36dc64fe1ae47764b2feedfa6cf0d69b3b737c6f204fd8fd68398ddf1a84e8
FOUND ON DISKS (4 DISKS)
| DISK TITLE | FILENAME | FILE TYPE | COLLECTION | TRACK | SECTOR | ACTIONS |
|---|---|---|---|---|---|---|
| 1 | JSR.D | SEQ | Treasure Chest - Plattfuss | 13 | 20 | DOWNLOAD FILE |
| U TILITES | JSR.D | SEQ | Treasure Chest - Wolfgang Rauprich | 23 | 6 | DOWNLOAD FILE |
| FREEWARE DISK NR | JSR.D | SEQ | Treasure Chest - Wolfgang Rauprich | 23 | 6 | DOWNLOAD FILE |
| OP CODE TUTOR | JSR.D | SEQ | High Voltage Complete C64 Collection | 13 | 15 | 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 CA D3 D2 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 CA D3 D2 20 49 53 20 54 48 |TION: ... IS TH| 00000050: 45 20 36 35 30 32 20 45 51 55 49 56 41 4C 45 4E |E 6502 EQUIVALEN| 00000060: 54 0D 22 4F 46 20 41 20 C7 CF D3 D5 C2 2C 20 20 |T."OF A ....., | 00000070: 54 52 41 4E 53 46 45 52 52 49 4E 47 20 20 43 4F |TRANSFERRING CO| 00000080: 4E 54 52 4F 4C 20 20 54 4F 0D 22 41 4E 4F 54 48 |NTROL TO."ANOTH| 00000090: 45 52 20 50 41 52 54 20 4F 46 20 54 48 45 20 50 |ER PART OF THE P| 000000A0: 52 4F 47 52 41 4D 20 20 55 4E 54 49 4C 20 20 41 |ROGRAM UNTIL A| 000000B0: 4E 0D 22 D2 D4 D3 20 49 53 20 4D 45 54 2C 20 57 |N."... IS MET, W| 000000C0: 48 49 43 48 20 48 41 53 20 41 4E 20 20 45 46 46 |HICH HAS AN EFF| 000000D0: 45 43 54 20 20 4C 49 4B 45 0D 22 D2 C5 D4 D5 D2 |ECT LIKE.".....| 000000E0: CE 2E 20 20 CC 49 4B 45 20 20 C2 D2 CB 2C 20 20 |.. .IKE ..., | 000000F0: 54 48 49 53 20 20 49 4E 53 54 52 55 43 54 49 4F |THIS INSTRUCTIO| 00000100: 4E 0D 22 53 41 56 45 53 20 D0 C3 2B 32 20 4F 4E |N."SAVES ..+2 ON| 00000110: 20 54 48 45 20 53 54 41 43 4B 2C 20 57 48 49 43 | THE STACK, WHIC| 00000120: 48 20 49 53 20 20 54 48 45 0D 22 4C 41 53 54 20 |H IS THE."LAST | 00000130: 42 59 54 45 20 20 4F 46 20 20 54 48 45 20 20 CA |BYTE OF THE .| 00000140: D3 D2 20 20 43 4F 4D 4D 41 4E 44 2C 20 20 D2 D4 |.. COMMAND, ..| 00000150: D3 0D 22 54 48 45 52 45 46 4F 52 45 20 48 41 53 |.."THEREFORE HAS| 00000160: 20 54 4F 20 49 4E 43 52 45 4D 45 4E 54 20 54 48 | TO INCREMENT TH| 00000170: 45 20 20 53 54 4F 52 45 44 0D 22 56 41 4C 55 45 |E STORED."VALUE| 00000180: 20 49 4E 20 4F 52 44 45 52 20 54 54 4F 20 45 58 | IN ORDER TTO EX| 00000190: 45 43 55 54 45 20 20 41 20 20 43 4F 52 52 45 43 |ECUTE A CORREC| 000001A0: 54 0D 22 52 45 54 55 52 4E 2E 20 20 20 CE 4F 54 |T."RETURN. .OT| 000001B0: 45 20 20 54 48 41 54 20 20 4E 4F 20 20 20 46 4C |E THAT NO FL| 000001C0: 41 47 53 20 20 20 41 52 45 0D 22 43 48 41 4E 47 |AGS ARE."CHANG| 000001D0: 45 44 20 42 59 20 CA D3 D2 2E 20 20 D2 D4 D3 20 |ED BY .... ... | 000001E0: 41 4C 53 4F 20 4C 45 41 56 45 53 20 46 4C 41 47 |ALSO LEAVES FLAG| 000001F0: 53 0D 22 55 4E 41 4C 54 45 52 45 44 2E 0D 22 0D |S."UNALTERED..".| 00000200: 22 5A 5A 5A 5A 5A 0D 0D 80 0D 0A |"ZZZZZ..... |
" OPCODE: JSR." -----------."."."OPERATION: JSR IS TH E 6502 EQUIVALENT."OF A GOSUB, TRANSFER RING CONTROL TO."ANOTHER PART OF THE P ROGRAM UNTIL AN."RTS IS MET, WHICH HAS AN EFFECT LIKE."RETURN. LIKE BRK, THIS INSTRUCTION."SAVES PC+2 ON THE STA CK, WHICH IS THE."LAST BYTE OF THE J SR COMMAND, RTS."THEREFORE HAS TO INCR EMENT THE STORED."VALUE IN ORDER TTO EX ECUTE A CORRECT."RETURN. NOTE THAT NO FLAGS ARE."CHANGED BY JSR. RTS ALSO LEAVES FLAGS."UNALTERED.."."ZZZZZ.. ...
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