IHSINFO
FILE INFORMATION
FILENAME(S): IHSINFO
FILE TYPE(S): SEQ
FILE SIZE: 1.6K
FIRST SEEN: 2025-11-30 16:59:42
APPEARS ON: 1 disk(s)
FILE HASH
f1202d56bc9c1fc9f154b71cedb4fc299faf87ee6c5ce7aff0d25c994ef2a594
FOUND ON DISKS (1 DISKS)
| DISK TITLE | FILENAME | FILE TYPE | COLLECTION | TRACK | SECTOR | ACTIONS |
|---|---|---|---|---|---|---|
| DOC DISK1 | IHSINFO | SEQ | High Voltage Complete C64 Collection | 31 | 5 | DOWNLOAD FILE |
FILE CONTENT & ANALYSIS
00000000: D3 D5 C2 CA 3A 20 CA 41 4D 45 53 2D 20 20 20 20 |....: .AMES- | 00000010: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000020: 20 28 D2 29 20 20 20 C6 D2 CF CD 3A 20 D5 54 49 | (.) ....: .TI| 00000030: 4C 49 54 49 45 53 31 20 20 30 35 2F 30 35 2F 38 |LITIES1 05/05/8| 00000040: 39 20 20 20 D3 23 3A 20 34 33 35 36 39 30 20 20 |9 .#: 435690 | 00000050: 0D CF 4B 2E 2E 2E 54 48 45 20 44 45 41 4C 20 54 |..K...THE DEAL T| 00000060: 48 49 53 3A 0D 0D 39 39 2E 39 39 39 39 39 39 39 |HIS:..99.9999999| 00000070: 25 20 4F 46 20 41 4C 4C 20 54 48 45 20 CD C1 CA |% OF ALL THE ...| 00000080: CF D2 20 53 4F 46 54 57 41 52 45 20 4D 41 4E 55 |.. SOFTWARE MANU| 00000090: 46 41 43 54 55 52 45 52 53 20 48 41 56 45 20 54 |FACTURERS HAVE T| 000000A0: 48 45 49 52 20 44 49 53 4B 53 20 53 45 4E 54 20 |HEIR DISKS SENT | 000000B0: 54 4F 20 43 4F 50 59 20 48 4F 55 53 45 53 20 54 |TO COPY HOUSES T| 000000C0: 4F 20 42 45 20 50 52 4F 44 55 43 45 44 2E 20 20 |O BE PRODUCED. | 000000D0: D4 48 45 53 45 20 48 4F 55 53 45 53 20 55 53 45 |.HESE HOUSES USE| 000000E0: 20 4D 41 43 48 49 4E 45 53 20 28 C6 4F 52 45 4D | MACHINES (.OREM| 000000F0: 41 53 54 45 52 29 20 54 4F 20 54 48 41 54 20 4C |ASTER) TO THAT L| 00000100: 49 4E 45 20 55 50 20 54 48 45 20 54 52 41 43 4B |INE UP THE TRACK| 00000110: 53 20 55 53 49 4E 47 20 54 48 45 20 49 4E 44 45 |S USING THE INDE| 00000120: 58 20 48 4F 4C 45 20 53 45 4E 53 4F 52 2E 20 20 |X HOLE SENSOR. | 00000130: D4 48 49 53 20 4D 45 41 4E 53 20 54 48 41 54 20 |.HIS MEANS THAT | 00000140: 54 48 45 20 53 54 41 52 54 20 4F 46 20 C5 C1 C3 |THE START OF ...| 00000150: C8 20 41 4E 44 20 C5 D6 C5 D2 D9 20 54 52 41 43 |. AND ..... TRAC| 00000160: 4B 20 57 49 4C 4C 20 42 45 20 41 54 20 54 48 45 |K WILL BE AT THE| 00000170: 20 49 4E 44 45 58 20 48 4F 4C 45 2E 0D 0D D7 49 | INDEX HOLE....I| 00000180: 54 48 20 54 48 49 53 20 4B 4E 4F 57 4C 45 44 47 |TH THIS KNOWLEDG| 00000190: 45 2C 20 48 45 52 45 20 49 53 20 48 4F 57 20 54 |E, HERE IS HOW T| 000001A0: 48 45 20 C9 C8 D3 20 CE C9 C2 C2 CC C5 D2 20 57 |HE ... ....... W| 000001B0: 4F 52 4B 53 3A 0D 0D D2 C5 C1 C4 20 D0 C1 D3 D3 |ORKS:...... ....| 000001C0: 3A 0D 2D 2D 2D 2D 2D 2D 2D 2D 2D 0D 31 29 20 D7 |:.---------.1) .| 000001D0: 41 49 54 20 46 4F 52 20 49 4E 44 45 58 20 48 4F |AIT FOR INDEX HO| 000001E0: 4C 45 20 54 4F 20 41 50 50 45 41 52 2E 20 20 0D |LE TO APPEAR. .| 000001F0: 32 29 20 D3 54 41 52 54 20 52 45 41 44 49 4E 47 |2) .TART READING| 00000200: 20 44 41 54 41 20 55 4E 54 49 4C 20 D2 C1 CD 20 | DATA UNTIL ... | 00000210: 49 53 20 20 20 20 20 20 20 20 20 46 55 4C 4C 2E |IS FULL.| 00000220: 0D 33 29 20 D7 41 49 54 20 46 4F 52 20 49 4E 44 |.3) .AIT FOR IND| 00000230: 45 58 20 48 4F 4C 45 20 54 4F 20 41 50 50 45 41 |EX HOLE TO APPEA| 00000240: 52 2E 0D 34 29 20 C3 4F 55 4E 54 20 54 48 45 20 |R..4) .OUNT THE | 00000250: 23 20 4F 46 20 42 59 54 45 53 20 54 48 41 54 20 |# OF BYTES THAT | 00000260: 47 4F 20 42 59 0D 20 20 20 55 4E 54 49 4C 20 54 |GO BY. UNTIL T| 00000270: 48 45 20 49 4E 44 45 58 20 48 4F 4C 45 20 41 50 |HE INDEX HOLE AP| 00000280: 50 45 41 52 53 20 0D 20 20 20 41 47 41 49 4E 2E |PEARS . AGAIN.| 00000290: 0D 35 29 20 D3 54 4F 52 45 20 54 48 49 53 20 56 |.5) .TORE THIS V| 000002A0: 41 4C 55 45 20 2D 24 31 30 20 41 53 20 54 48 45 |ALUE -$10 AS THE| 000002B0: 20 C5 CE C4 0D 20 20 20 CF C6 20 D4 D2 C1 C3 CB | .... .. .....| 000002C0: 20 4D 41 52 4B 45 52 2E 0D 0D D7 D2 C9 D4 C5 20 | MARKER........ | 000002D0: D0 C1 D3 D3 3A 0D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D |....:.----------| 000002E0: 0D 31 29 20 D7 52 49 54 45 20 35 35 27 53 20 54 |.1) .RITE 55'S T| 000002F0: 4F 20 45 4E 54 49 52 45 20 54 52 41 43 4B 2E 0D |O ENTIRE TRACK..| 00000300: 32 29 20 D7 52 49 54 45 20 31 30 20 D3 D9 CE C3 |2) .RITE 10 ....| 00000310: 20 4D 41 52 4B 53 20 28 C6 C6 27 53 29 2E 0D 33 | MARKS (..'S)..3| 00000320: 29 20 D7 41 49 54 20 46 4F 52 20 D3 D9 CE C3 20 |) .AIT FOR .... | 00000330: 4D 41 52 4B 53 20 54 4F 20 41 50 50 45 41 52 2E |MARKS TO APPEAR.| 00000340: 0D 34 29 20 C3 4F 55 4E 54 20 23 20 4F 46 20 42 |.4) .OUNT # OF B| 00000350: 59 54 45 53 20 47 4F 20 42 59 20 55 4E 54 49 4C |YTES GO BY UNTIL| 00000360: 20 D3 D9 CE C3 0D 20 20 20 4D 41 52 4B 53 20 41 | ..... MARKS A| 00000370: 50 50 45 41 52 20 41 47 41 49 4E 2E 0D 35 29 20 |PPEAR AGAIN..5) | 00000380: D3 54 4F 52 45 20 54 48 49 53 20 56 41 4C 55 45 |.TORE THIS VALUE| 00000390: 20 41 53 20 54 48 45 20 C5 CE C4 20 4F 46 20 D4 | AS THE ... OF .| 000003A0: D2 C1 C3 CB 0D 20 20 20 4D 41 52 4B 45 52 2E 0D |..... MARKER..| 000003B0: 36 29 20 D7 41 49 54 20 46 4F 52 20 49 4E 44 45 |6) .AIT FOR INDE| 000003C0: 58 20 48 4F 4C 45 20 54 4F 20 41 50 50 45 41 52 |X HOLE TO APPEAR| 000003D0: 2E 0D 37 29 20 D7 52 49 54 45 20 4F 55 54 20 44 |..7) .RITE OUT D| 000003E0: 41 54 41 20 55 4E 54 49 4C 20 C5 CE C4 20 4F 46 |ATA UNTIL ... OF| 000003F0: 20 D4 D2 C1 C3 CB 0D 20 20 20 4D 41 52 4B 45 52 | ...... MARKER| 00000400: 20 41 50 50 45 41 52 53 2E 0D 0D D9 4F 55 20 53 | APPEARS....OU S| 00000410: 45 45 2C 20 54 48 45 20 50 52 4F 42 4C 45 4D 20 |EE, THE PROBLEM | 00000420: 49 53 20 57 49 54 48 20 54 48 45 20 44 52 49 56 |IS WITH THE DRIV| 00000430: 45 20 53 50 45 45 44 20 56 41 52 59 49 4E 47 2E |E SPEED VARYING.| 00000440: 20 20 C9 46 20 59 4F 55 20 57 52 49 54 45 20 54 | .F YOU WRITE T| 00000450: 4F 4F 20 4D 55 43 48 20 44 41 54 41 20 54 4F 20 |OO MUCH DATA TO | 00000460: 54 48 45 20 44 49 53 4B 2C 20 59 4F 55 20 57 49 |THE DISK, YOU WI| 00000470: 4C 4C 20 4F 56 45 52 20 57 52 49 54 45 20 54 48 |LL OVER WRITE TH| 00000480: 45 20 54 52 41 43 4B 2E 20 20 D4 4F 4F 20 4C 49 |E TRACK. .OO LI| 00000490: 54 54 4C 45 20 57 49 4C 4C 20 43 55 54 20 49 54 |TTLE WILL CUT IT| 000004A0: 20 53 48 4F 52 54 2E 20 20 D3 4F 2C 20 54 48 45 | SHORT. .O, THE| 000004B0: 20 53 4F 46 54 57 41 52 45 20 46 49 47 55 52 45 | SOFTWARE FIGURE| 000004C0: 53 20 4F 55 54 20 49 46 20 54 48 45 20 23 20 4F |S OUT IF THE # O| 000004D0: 46 20 42 59 54 45 53 20 D2 C5 C1 C4 20 49 53 20 |F BYTES .... IS | 000004E0: 47 52 45 41 54 45 52 20 54 48 41 4E 20 23 20 4F |GREATER THAN # O| 000004F0: 46 20 42 59 54 45 53 20 54 48 41 54 20 41 52 45 |F BYTES THAT ARE| 00000500: 20 41 42 4C 45 20 54 4F 20 42 45 20 57 52 49 54 | ABLE TO BE WRIT| 00000510: 54 45 4E 2E 20 20 C9 46 20 54 48 49 53 20 49 53 |TEN. .F THIS IS| 00000520: 20 54 48 45 20 43 41 53 45 2C 20 54 48 45 20 53 | THE CASE, THE S| 00000530: 4F 46 54 57 41 52 45 20 41 54 54 45 4D 50 54 53 |OFTWARE ATTEMPTS| 00000540: 20 54 4F 20 52 45 44 55 43 45 20 54 48 45 20 54 | TO REDUCE THE T| 00000550: 52 41 43 4B 2E 2E 2E 4C 4F 53 49 4E 47 20 53 4F |RACK...LOSING SO| 00000560: 4D 45 20 44 41 54 41 20 41 4E 44 20 43 41 55 53 |ME DATA AND CAUS| 00000570: 49 4E 47 20 54 48 45 20 43 4F 50 59 20 54 4F 20 |ING THE COPY TO | 00000580: 46 41 49 4C 2E 0D 0D C9 46 20 54 48 45 20 23 20 |FAIL....F THE # | 00000590: 4F 46 20 42 59 54 45 53 20 D2 C5 C1 C4 20 41 52 |OF BYTES .... AR| 000005A0: 45 20 46 45 57 45 52 20 54 48 41 4E 20 57 48 41 |E FEWER THAN WHA| 000005B0: 54 20 43 41 4E 20 42 45 20 53 54 4F 52 45 44 20 |T CAN BE STORED | 000005C0: 4F 4E 20 54 48 45 20 D7 D2 C9 D4 C5 20 4D 4F 44 |ON THE ..... MOD| 000005D0: 45 2C 20 54 48 45 4E 20 45 56 45 52 59 54 48 49 |E, THEN EVERYTHI| 000005E0: 4E 47 20 49 53 20 46 49 4E 45 2E 0D 0D C9 20 41 |NG IS FINE.... A| 000005F0: 4D 20 57 4F 52 4B 49 4E 47 20 4F 4E 20 54 48 49 |M WORKING ON THI| 00000600: 53 20 50 52 4F 42 4C 45 4D 20 4E 4F 57 20 57 49 |S PROBLEM NOW WI| 00000610: 54 48 20 47 52 45 41 54 20 53 55 43 43 45 53 53 |TH GREAT SUCCESS| 00000620: 21 0D 0D CA 49 4D 0D 0D D0 2E D3 2E 20 28 D4 48 |!...IM...... (.H| 00000630: 49 53 20 C8 C1 D3 20 D4 CF 20 C2 C5 20 54 48 45 |IS ... .. .. THE| 00000640: 20 CC CF CE C7 C5 D3 D4 20 4D 45 53 53 41 47 45 | ....... MESSAGE| 00000650: 20 C9 20 48 41 56 45 20 C5 D6 C5 D2 20 54 59 50 | . HAVE .... TYP| 00000660: 45 44 21 29 20 20 3B 29 0D 20 20 0D 0D 20 20 |ED!) ;). .. |
SUBJ: JAMES- (R) F ROM: UTILITIES1 05/05/89 S#: 435690 .OK...THE DEAL THIS:..99.9999999% OF ALL THE MAJOR SOFTWARE MANUFACTURERS HAVE T HEIR DISKS SENT TO COPY HOUSES TO BE PRO DUCED. THESE HOUSES USE MACHINES (FOREM ASTER) TO THAT LINE UP THE TRACKS USING THE INDEX HOLE SENSOR. THIS MEANS THAT THE START OF EACH AND EVERY TRACK WILL B E AT THE INDEX HOLE...WITH THIS KNOWLEDG E, HERE IS HOW THE IHS NIBBLER WORKS:..R EAD PASS:.---------.1) WAIT FOR INDEX HO LE TO APPEAR. .2) START READING DATA UN TIL RAM IS FULL..3) WAIT FOR IND EX HOLE TO APPEAR..4) COUNT THE # OF BYT ES THAT GO BY. UNTIL THE INDEX HOLE AP PEARS . AGAIN..5) STORE THIS VALUE -$1 0 AS THE END. OF TRACK MARKER...WRITE PASS:.----------.1) WRITE 55'S TO ENTIRE TRACK..2) WRITE 10 SYNC MARKS (FF'S)..3 ) WAIT FOR SYNC MARKS TO APPEAR..4) COUN T # OF BYTES GO BY UNTIL SYNC. MARKS A PPEAR AGAIN..5) STORE THIS VALUE AS THE END OF TRACK. MARKER..6) WAIT FOR INDE X HOLE TO APPEAR..7) WRITE OUT DATA UNTI L END OF TRACK. MARKER APPEARS...YOU S EE, THE PROBLEM IS WITH THE DRIVE SPEED VARYING. IF YOU WRITE TOO MUCH DATA TO THE DISK, YOU WILL OVER WRITE THE TRACK. TOO LITTLE WILL CUT IT SHORT. SO, THE SOFTWARE FIGURES OUT IF THE # OF BYTES READ IS GREATER THAN # OF BYTES THAT ARE ABLE TO BE WRITTEN. IF THIS IS THE CAS E, THE SOFTWARE ATTEMPTS TO REDUCE THE T RACK...LOSING SOME DATA AND CAUSING THE COPY TO FAIL...IF THE # OF BYTES READ AR E FEWER THAN WHAT CAN BE STORED ON THE W RITE MODE, THEN EVERYTHING IS FINE...I A M WORKING ON THIS PROBLEM NOW WITH GREAT SUCCESS!..JIM..P.S. (THIS HAS TO BE THE LONGEST MESSAGE I HAVE EVER TYPED!) ;) . ..
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