AUTO UNSCRATCH

FILE INFORMATION

FILENAME(S): AUTO UNSCRATCH

FILE TYPE(S): PRG

FILE SIZE: 2K

FIRST SEEN: 2025-11-30 21:25:25

APPEARS ON: 1 disk(s)

FILE HASH

81d7df2f180c13f269a9ce15a30e1ff0557daface36599467fa8229e668cdf3c

FOUND ON DISKS (1 DISKS)

DISK TITLE	FILENAME	FILE TYPE	COLLECTION	TRACK	SECTOR	ACTIONS
C64UTIL	AUTO UNSCRATCH	PRG	DuncanTwain	13	7	DOWNLOAD FILE

FILE CONTENT & ANALYSIS

> DETECTED: COMMODORE BASIC PROGRAM (LOAD ADDRESS $0801)

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000000F0: 20 4A 55 53 54 20 50 52  4F 47 52 41 4D 53 20 4F  | JUST PROGRAMS O|
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000003E0: 30 00 2F 0C D0 07 8F 20  52 45 41 44 20 42 4C 4F  |0./.... READ BLO|
000003F0: 43 4B 20 54 31 2C 53 31  20 54 4F 20 42 55 46 46  |CK T1,S1 TO BUFF|
00000400: 45 52 20 23 20 4E 55 32  37 34 46 CF 52 3D 30 54  |ER # NU274F.R=0T|
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00000450: EE 07 8D 33 30 30 30 3A  8B A8 45 52 A7 32 30 36  |...3000:..ER.206|
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00000470: 89 32 30 32 30 00 AB 0C  02 08 99 45 52 24 3A 81  |.2020......ER$:.|
00000480: 4A B2 28 42 42 AA 4E 55  29 AC 32 35 36 A4 28 42  |J.(BB.NU).256.(B|
00000490: 42 AA 4E 55 29 AC 32 35  36 AA 32 35 35 3A 97 4A  |B.NU).256.255:.J|
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000004B0: 98 31 2C 22 42 2D 50 22  3B 33 3B 30 00 E1 0C 20  |.1,"B-P";3;0... |
000004C0: 08 97 39 39 36 2C C2 28  33 29 3A 97 39 39 37 2C  |..996,.(3):.997,|
000004D0: C2 28 34 29 3A 97 34 2C  42 42 AA 4E 55 3A 9E 4D  |.(4):.4,BB.NU:.M|
000004E0: 41 00 F9 0C 25 08 97 33  2C C2 28 39 39 36 29 3A  |A...%..3,.(996):|
000004F0: 97 34 2C C2 28 39 39 37  29 00 17 0D 2A 08 8B 53  |.4,.(997)...*..S|
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00000510: 30 3A 89 32 30 35 30 00  1D 0D 34 08 8E 00 46 0D  |0:.2050...4...F.|
00000520: 98 08 8F 20 57 52 49 54  45 20 42 4C 4F 43 4B 20  |... WRITE BLOCK |
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00000540: 52 20 23 20 4E 55 00 4E  0D A2 08 43 B2 2E 00 70  |R # NU.N...C...p|
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00000560: 3B 53 31 3A 98 31 2C 22  42 2D 50 22 3B 33 3B 30  |;S1:.1,"B-P";3;0|
00000570: 00 97 0D C0 08 97 39 39  36 2C C2 28 33 29 3A 97  |......996,.(3):.|
00000580: 39 39 37 2C C2 28 34 29  3A 97 34 2C 42 42 AA 4E  |997,.(4):.4,BB.N|
00000590: 55 3A 9E 4D 41 AA 33 00  AF 0D C5 08 97 33 2C C2  |U:.MA.3......3,.|
000005A0: 28 39 39 36 29 3A 97 34  2C C2 28 39 39 37 29 00  |(996):.4,.(997).|
000005B0: E2 0D CA 08 8B 53 54 B3  B1 2E AF 53 54 B3 B1 36  |.....ST....ST..6|
000005C0: 34 A7 99 22 12 49 45 45  45 20 57 52 49 54 45 20  |4..".IEEE WRITE |
000005D0: 45 52 52 4F 52 22 53 54  22 92 22 3A 89 31 30 30  |ERROR"ST".":.100|
000005E0: 30 30 00 F8 0D D4 08 98  31 2C 22 55 32 22 3B 33  |00......1,"U2";3|
000005F0: 3B 30 3B 54 31 3B 53 31  00 0C 0E DE 08 8D 33 30  |;0;T1;S1......30|
00000600: 30 30 3A 8B A8 45 52 A7  32 33 30 30 00 20 0E E8  |00:..ER.2300. ..|
00000610: 08 43 B2 43 AA 31 3A 8B  43 B3 33 A7 32 32 36 30  |.C.C.1:.C.3.2260|
00000620: 00 4C 0E F2 08 99 22 12  55 4E 52 45 43 4F 56 45  |.L....".UNRECOVE|
00000630: 52 41 42 4C 45 20 57 52  49 54 45 20 45 52 52 4F  |RABLE WRITE ERRO|
00000640: 52 22 45 52 24 3A 89 31  30 30 30 30 00 52 0E FC  |R"ER$:.10000.R..|
00000650: 08 8E 00 6E 0E B8 0B 8F  20 52 45 41 44 20 45 52  |...n.... READ ER|
00000660: 52 20 43 48 20 54 4F 20  45 52 2C 45 52 24 00 A5  |R CH TO ER,ER$..|
00000670: 0E C2 0B 84 31 2C 45 30  24 2C 45 31 24 2C 45 32  |....1,E0$,E1$,E2|
00000680: 24 2C 45 33 24 3A 45 52  24 B2 45 30 24 AA 22 2C  |$,E3$:ER$.E0$.",|
00000690: 22 AA 45 31 24 AA 22 2C  22 AA 45 32 24 AA 22 2C  |".E1$.",".E2$.",|
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000006B0: 30 24 29 3A 8B 45 52 A7  45 52 B2 C5 28 45 30 24  |0$):.ER.ER..(E0$|
000006C0: 29 00 C7 0E D6 0B 8E 00  D6 0E 10 27 8F 20 44 52  |)..........'. DR|
000006D0: 4F 50 20 4F 55 54 00 F4  0E 1A 27 97 35 35 2C C2  |OP OUT....'.55,.|
000006E0: 28 39 39 38 29 3A 97 35  36 2C C2 28 39 39 39 29  |(998):.56,.(999)|
000006F0: 3A 9C 3A 90 00 35 0F 98  3A 83 37 36 2C 36 36 2C  |:.:..5..:.76,66,|
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00000720: 2C 31 33 32 2C 33 2C 33  32 2C 32 30 37 2C 32 35  |,132,3,32,207,25|
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00000740: 2C 31 34 34 2C 32 30 38  2C 33 2C 32 30 30 2C 32  |,144,208,3,200,2|
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000007B0: 34 2C 33 32 2C 32 30 34  2C 32 35 35 2C 39 36 00  |4,32,204,255,96.|
000007C0: 00 00 45 45 45 20 57 52  49 54 45 20 45 52 52 4F  |..EEE WRITE ERRO|
000007D0: 52 22 53 54 22 92 22 3A  89 31 30 30 30 30 00 F8  |R"ST".":.10000..|
000007E0: 0D D4 08 98 31 2C 22 55  32 22 3B 33 3B 30 3B 54  |....1,"U2";3;0;T|

.......55,0:.56,160.-....I.828.883:.A:.I
,A:.I.E...BB.B(44).27:.995,BB.N....998,B
(55):.999,B(56):.55,0:.56,BB:..|.(.BB.B(
995)...2.N.B(999).BB.1:BA.BB.256:MA.828.
..N..1,8,15.A.A..".UNSCRATCH4+......B.."
THIS PROGRAM CAN 'UNSCRATCH' A DISK WITH
 JUST PROGRAMS ON IT (IT COULD.6.C.."MOD
IFIED FOR OTHER FILE TYPES)":....D.."IT 
READS EACH SECTOR OF THE DIRECTORY   (IT
 STARTS WITH TRACK-18 SECTOR-1)...E.."IT
 THEN CORRECTS THE CHANGES MADE.S.F.."WH
EN THE DISK WAS 'SCRATCHED'...G.T1.18:S1
.1...J..270.!.M. 1: 3:.15,8,15:.15,"V": 
15:."IGNORE THE ILLEGAL";.D.N.."TRACK ER
ROR MSG FROM DISK":..I... 1: 3:.1,8,15:.
1,"I0":.3,8,3,"#".S....2000......:."TRAC
K";T1;"  SECTOR";S1:.:PG.0......R.0.7:.R
1.0.16:C1.BB.256.3.R1.R.32:C.B(C1):.R1.0
.C..0.PG.PG.1......C.31.C.128.C.160.C.19
2..G(C);......R1:.......R:..W...."# OF P
RG'S IN BLOCK:";PG:.:.".................
.............."......X.0.PG.1:.(BB.256.2
.X.32),130:.X: 3:.350...J. 3...^..1,"I0"
:.3,8,3,"#".X._..2200: 1:T1.B(BB.256):S1
.B(BB.256.1):.S1.255.205...`..270./.P.. 
READ BLOCK T1,S1 TO BUFFER # NU274FOR=0T
O7:FOR1=0TO15:?CHR$(BB*256+3+R1.7.Z.C...
M....1,"U1";3;0;T1;S1.A....3000:..ER.206
0.U...C.C.1:.C.3.2020......ER$:.J.(BB.NU
).256.(BB.NU).256.255:.J,.:.J:.2100.....
.1,"B-P";3;0... ..996,B(3):.997,B(4):.4,
BB.NU:.MA...%..3,B(996):.4,B(997)...*..S
T....ST..64..3000:.2050...4...F.... WRIT
E BLOCK T1,S1 FROM BUFFER # NU.N...C...P
....1,"B-A";0;T1;S1:.1,"B-P";3;0......99
6,B(3):.997,B(4):.4,BB.NU:.MA.3...E..3,B
(996):.4,B(997)...J..ST....ST..64..".IEE
E WRITE ERROR"ST".":.10000...T..1,"U2";3
;0;T1;S1......3000:..ER.2300. ...C.C.1:.
C.3.2260.L....".UNRECOVERABLE WRITE ERRO
R"ER$:.10000.R.....N.... READ ERR CH TO 
ER,ER$...B..1,E0$,E1$,E2$,E3$:ER$.E0$.",
".E1$.",".E2$.",".E3$.A.L.ER.C(E0$):.ER.
ER.E(E0$).G.V...V..'. DROP OUT....'.55,B
(998):.56,B(999):.:..5..:.76,66,3,76,91,
3,162,3,32,198,255,160,0,132,3,32,207,25
5,145.Y..:.3,165,144,208,3,200,208,244,3
2,204,255,96,162,3,32,201,255,160....:.0
,132,3,177,3,32,210,255,165,144,208,3,20
0,208,244,32,204,255,96...EEE WRITE ERRO
R"ST".":.10000...T..1,"U2";3;0;T

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