RTI.D

FILE INFORMATION

FILENAME(S): RTI.D

FILE TYPE(S): SEQ

FILE SIZE: 819b

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

APPEARS ON: 4 disk(s)

FILE HASH

12f4071b465753a189cdf6ea449eb73daebf478a69301a04e48ac6014a72df83

FOUND ON DISKS (4 DISKS)

DISK TITLE	FILENAME	FILE TYPE	COLLECTION	TRACK	SECTOR	ACTIONS
1	RTI.D	SEQ	Treasure Chest - Plattfuss	24	0	DOWNLOAD FILE
U TILITES	RTI.D	SEQ	Treasure Chest - Wolfgang Rauprich	24	7	DOWNLOAD FILE
FREEWARE DISK NR	RTI.D	SEQ	Treasure Chest - Wolfgang Rauprich	24	7	DOWNLOAD FILE
OP CODE TUTOR	RTI.D	SEQ	High Voltage Complete C64 Collection	12	18	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 D2  D4 C9 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 CF  50 45 52 41 54 49 4F 4E  |-----.".PERATION|
00000040: 3A 20 20 D2 D4 C9 20 54  41 4B 45 53 20 33 20 42  |:  ... TAKES 3 B|
00000050: 59 54 45 53 20 46 52 4F  4D 20 54 48 45 0D 22 53  |YTES FROM THE."S|
00000060: 54 41 43 4B 2C 20 20 44  45 50 4F 53 49 54 45 44  |TACK,  DEPOSITED|
00000070: 20 20 20 54 48 45 52 45  20 20 20 57 48 45 4E 20  |   THERE   WHEN |
00000080: 20 20 54 48 45 0D 22 48  41 52 44 57 41 52 45 20  |  THE."HARDWARE |
00000090: 20 54 52 49 47 47 45 52  45 44 20 20 20 54 48 45  | TRIGGERED   THE|
000000A0: 20 20 20 49 4E 54 45 52  52 55 50 54 2C 0D 22 41  |   INTERRUPT,."A|
000000B0: 53 53 55 4D 49 4E 47 20  20 54 48 41 54 20 20 54  |SSUMING  THAT  T|
000000C0: 48 45 20 20 53 54 41 43  4B 20 20 48 41 53 20 20  |HE  STACK  HAS  |
000000D0: 20 42 45 45 4E 0D 22 54  49 44 49 45 44 20 20 55  | BEEN."TIDIED  U|
000000E0: 50 20 20 42 45 46 4F 52  45 20 20 D2 D4 C9 20 20  |P  BEFORE  ...  |
000000F0: 20 57 49 54 48 20 20 20  45 51 55 41 4C 0D 22 4E  | WITH   EQUAL."N|
00000100: 55 4D 42 45 52 53 20 4F  46 20 50 55 4C 4C 53 20  |UMBERS OF PULLS |
00000110: 46 4F 4C 4C 4F 57 49 4E  47 20 54 48 45 20 50 55  |FOLLOWING THE PU|
00000120: 53 48 45 53 2E 0D 22 D4  48 45 20 20 20 50 52 4F  |SHES..".HE   PRO|
00000130: 43 45 53 53 4F 52 20 20  20 53 54 41 54 55 53 20  |CESSOR   STATUS |
00000140: 20 20 46 4C 41 47 53 20  20 20 41 52 45 0D 22 52  |  FLAGS   ARE."R|
00000150: 45 43 4F 56 45 52 45 44  20 20 41 53 20 20 54 48  |ECOVERED  AS  TH|
00000160: 45 59 20 20 57 45 52 45  20 20 20 57 48 45 4E 20  |EY  WERE   WHEN |
00000170: 20 20 54 48 45 0D 22 49  4E 54 45 52 52 55 50 54  |  THE."INTERRUPT|
00000180: 20 20 4F 43 55 52 52 45  44 2C 20 20 41 4E 44 20  |  OCURRED,  AND |
00000190: 20 54 48 45 20 20 50 52  4F 47 52 41 4D 0D 22 43  | THE  PROGRAM."C|
000001A0: 4F 55 4E 54 45 52 20 20  49 53 20 20 52 45 53 54  |OUNTER  IS  REST|
000001B0: 4F 52 45 44 20 20 53 4F  20 20 20 54 48 41 54 20  |ORED  SO   THAT |
000001C0: 20 20 54 48 45 0D 22 50  52 4F 47 52 41 4D 20 52  |  THE."PROGRAM R|
000001D0: 45 53 55 4D 45 53 20 4F  50 45 52 41 54 49 4F 4E  |ESUMES OPERATION|
000001E0: 20 41 54 20 54 48 45 20  20 42 59 54 45 0D 22 41  | AT THE  BYTE."A|
000001F0: 54 20 57 48 49 43 48 20  20 49 54 20 20 57 41 53  |T WHICH  IT  WAS|
00000200: 20 20 49 4E 54 45 52 52  55 50 54 45 44 2E 20 20  |  INTERRUPTED.  |
00000210: 20 CE 4F 54 45 0D 22 54  48 41 54 20 C1 2C D8 2C  | .OTE."THAT .,.,|
00000220: 20 20 41 4E 44 20 20 D9  20 20 41 52 45 20 20 4E  |  AND  .  ARE  N|
00000230: 4F 54 20 20 53 41 56 45  44 20 20 4F 52 0D 22 52  |OT  SAVED  OR."R|
00000240: 45 43 4F 56 45 52 45 44  20 41 55 54 4F 4D 41 54  |ECOVERED AUTOMAT|
00000250: 49 43 41 4C 4C 59 20 49  4E 20 20 54 48 49 53 20  |ICALLY IN  THIS |
00000260: 20 57 41 59 2C 0D 22 42  55 54 20 4D 55 53 54 20  | WAY,."BUT MUST |
00000270: 42 45 20 20 53 41 56 45  44 20 20 42 59 20 20 54  |BE  SAVED  BY  T|
00000280: 48 45 20 20 49 4E 54 45  52 52 55 50 54 0D 22 50  |HE  INTERRUPT."P|
00000290: 52 4F 43 45 53 53 49 4E  47 20 20 41 4E 44 20 20  |ROCESSING  AND  |
000002A0: 52 45 53 54 4F 52 45 44  20 20 49 4D 4D 45 44 49  |RESTORED  IMMEDI|
000002B0: 41 54 45 4C 59 0D 22 42  45 46 4F 52 45 20 D2 D4  |ATELY."BEFORE ..|
000002C0: C9 3B 20 20 C9 46 20 59  4F 55 20 46 4F 4C 4C 4F  |.;  .F YOU FOLLO|
000002D0: 57 20 54 48 45 20 20 56  45 43 54 4F 52 0D 22 53  |W THE  VECTOR."S|
000002E0: 54 4F 52 45 44 20 49 4E  20 C3 C2 CD 20 D2 CF CD  |TORED IN ... ...|
000002F0: 20 41 54 20 28 24 C6 C6  C6 C5 29 2C 20 59 4F 55  | AT ($....), YOU|
00000300: 20 57 49 4C 4C 0D 22 53  45 45 20 54 48 49 53 20  | WILL."SEE THIS |
00000310: 4F 50 45 52 41 54 49 4F  4E 20 54 41 4B 49 4E 47  |OPERATION TAKING|
00000320: 20 50 4C 41 43 45 2E 0D  22 5A 5A 5A 5A 5A 0D 0D  | PLACE.."ZZZZZ..|
00000330: 80 0D 0A                                          |...             |

"              OPCODE: RTI."            
  -----------."OPERATION:  RTI TAKES 3 B
YTES FROM THE."STACK,  DEPOSITED   THERE
   WHEN   THE."HARDWARE  TRIGGERED   THE
   INTERRUPT,."ASSUMING  THAT  THE  STAC
K  HAS   BEEN."TIDIED  UP  BEFORE  RTI  
 WITH   EQUAL."NUMBERS OF PULLS FOLLOWIN
G THE PUSHES.."THE   PROCESSOR   STATUS 
  FLAGS   ARE."RECOVERED  AS  THEY  WERE
   WHEN   THE."INTERRUPT  OCURRED,  AND 
 THE  PROGRAM."COUNTER  IS  RESTORED  SO
   THAT   THE."PROGRAM RESUMES OPERATION
 AT THE  BYTE."AT WHICH  IT  WAS  INTERR
UPTED.   NOTE."THAT A,X,  AND  Y  ARE  N
OT  SAVED  OR."RECOVERED AUTOMATICALLY I
N  THIS  WAY,."BUT MUST BE  SAVED  BY  T
HE  INTERRUPT."PROCESSING  AND  RESTORED
  IMMEDIATELY."BEFORE RTI;  IF YOU FOLLO
W THE  VECTOR."STORED IN CBM ROM AT ($FF
FE), YOU WILL."SEE THIS OPERATION TAKING
 PLACE.."ZZZZZ.....

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