BACK2@

FILE INFORMATION

FILENAME(S): BACK2@

FILE TYPE(S): PRG

FILE SIZE: 1.1K

FIRST SEEN: 2025-12-02 00:16:15

APPEARS ON: 1 disk(s)

FILE HASH

208dedaf8ffee6593511cac6507dd75ce1275628c3a00324849fcb265e88e4f7

FOUND ON DISKS (1 DISKS)

DISK TITLE	FILENAME	FILE TYPE	COLLECTION	TRACK	SECTOR	ACTIONS
!	BACK2@	PRG	Maestro	19	0	DOWNLOAD FILE

FILE CONTENT & ANALYSIS

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

00000000: 01 08 0D 08 E8 03 56 B2  35 33 32 34 38 00 19 08  |......V.53248...|
00000010: F2 03 AC B2 34 39 31 35  32 00 24 08 FC 03 4C 44  |....49152.$...LD|
00000020: 41 20 23 30 00 32 08 06  04 53 54 41 20 24 44 30  |A #0.2...STA $D0|
00000030: 32 30 00 40 08 10 04 53  54 41 20 24 44 30 32 31  |20.@...STA $D021|
00000040: 00 4C 08 11 04 53 54 41  20 36 34 36 00 5A 08 1A  |.L...STA 646.Z..|
00000050: 04 4A 53 52 20 24 45 35  34 34 00 67 08 24 04 4C  |.JSR $E544.g.$.L|
00000060: 44 41 20 23 32 35 35 00  74 08 2E 04 53 54 41 20  |DA #255.t...STA |
00000070: 56 AA 32 31 00 81 08 38  04 53 54 41 20 56 AA 32  |V.21...8.STA V.2|
00000080: 39 00 8E 08 42 04 53 54  41 20 56 AA 32 38 00 9C  |9...B.STA V.28..|
00000090: 08 4C 04 53 54 41 20 24  44 30 31 42 00 A8 08 56  |.L.STA $D01B...V|
000000A0: 04 4C 44 41 20 23 31 33  00 B3 08 60 04 4C 44 58  |.LDA #13...`.LDX|
000000B0: 20 23 30 00 C5 08 6A 04  50 31 20 53 54 41 20 32  | #0...j.P1 STA 2|
000000C0: 30 34 30 2C 58 00 CD 08  74 04 49 4E 58 00 D8 08  |040,X...t.INX...|
000000D0: 7E 04 43 50 58 20 23 38  00 E3 08 88 04 42 4E 45  |~.CPX #8.....BNE|
000000E0: 20 50 31 00 EE 08 92 04  4C 44 41 20 23 31 00 FC  | P1.....LDA #1..|
000000F0: 08 9C 04 53 54 41 20 24  44 30 32 35 00 07 09 A6  |...STA $D025....|
00000100: 04 4C 44 41 20 23 36 00  15 09 B0 04 53 54 41 20  |.LDA #6.....STA |
00000110: 24 44 30 32 36 00 20 09  BA 04 4C 44 58 20 23 30  |$D026. ...LDX #0|
00000120: 00 2C 09 C4 04 4C 44 41  20 23 31 34 00 3F 09 CE  |.,...LDA #14.?..|
00000130: 04 50 32 20 53 54 41 20  24 44 30 32 37 2C 58 00  |.P2 STA $D027,X.|
00000140: 47 09 D8 04 49 4E 58 00  52 09 E2 04 43 50 58 20  |G...INX.R...CPX |
00000150: 23 38 00 5D 09 EC 04 42  4E 45 20 50 32 00 63 09  |#8.]...BNE P2.c.|
00000160: F6 04 21 00 6F 09 00 05  4A 53 52 20 53 45 54 00  |..!.o...JSR SET.|
00000170: 7C 09 0A 05 53 45 54 49  52 51 20 21 00 84 09 14  ||...SETIRQ !....|
00000180: 05 53 45 49 00 91 09 1E  05 4C 44 41 20 23 24 37  |.SEI.....LDA #$7|
00000190: 46 00 9F 09 28 05 53 54  41 20 24 44 43 30 44 00  |F...(.STA $DC0D.|
000001A0: AD 09 32 05 4C 44 41 20  24 44 43 30 44 00 BA 09  |..2.LDA $DC0D...|
000001B0: 3C 05 4C 44 41 20 23 24  31 42 00 C8 09 46 05 53  |<.LDA #$1B...F.S|
000001C0: 54 41 20 24 44 30 31 31  00 D5 09 50 05 4C 44 41  |TA $D011...P.LDA|
000001D0: 20 23 24 33 32 00 E3 09  5A 05 53 54 41 20 24 44  | #$32...Z.STA $D|
000001E0: 30 31 32 00 F1 09 64 05  4C 44 41 20 23 B3 49 52  |012...d.LDA #.IR|
000001F0: 51 00 FE 09 6E 05 53 54  41 20 24 33 31 34 00 0C  |Q...n.STA $314..|
00000200: 0A 78 05 4C 44 41 20 23  B1 49 52 51 00 19 0A 82  |.x.LDA #.IRQ....|
00000210: 05 53 54 41 20 24 33 31  35 00 24 0A 8C 05 4C 44  |.STA $315.$...LD|
00000220: 41 20 23 31 00 32 0A 96  05 53 54 41 20 24 44 30  |A #1.2...STA $D0|
00000230: 31 39 00 40 0A A0 05 53  54 41 20 24 44 30 31 41  |19.@...STA $D01A|
00000240: 00 48 0A AA 05 43 4C 49  00 50 0A B4 05 52 54 53  |.H...CLI.P...RTS|
00000250: 00 56 0A BE 05 21 00 5C  0A C8 05 21 00 66 0A D2  |.V...!.\...!.f..|
00000260: 05 49 52 51 20 21 00 74  0A DC 05 4A 53 52 20 24  |.IRQ !.t...JSR $|
00000270: 32 30 30 30 00 82 0A E6  05 49 4E 43 20 24 44 30  |2000.....INC $D0|
00000280: 31 39 00 90 0A F0 05 4A  4D 50 20 24 45 41 33 31  |19.....JMP $EA31|
00000290: 00 96 0A FA 05 21 00 A0  0A 04 06 53 45 54 20 21  |.....!.....SET !|
000002A0: 00 AB 0A 0E 06 4C 44 58  20 23 30 00 B6 0A 18 06  |.....LDX #0.....|
000002B0: 4C 44 41 20 23 30 00 C7  0A 22 06 4C 4C 20 53 54  |LDA #0...".LL ST|
000002C0: 41 20 38 33 32 2C 58 00  CF 0A 2C 06 49 4E 58 00  |A 832,X...,.INX.|
000002D0: DB 0A 36 06 43 50 58 20  23 36 34 00 E6 0A 40 06  |..6.CPX #64...@.|
000002E0: 42 4E 45 20 4C 4C 00 F1  0A 4A 06 4C 44 58 20 23  |BNE LL...J.LDX #|
000002F0: 30 00 02 0B 54 06 50 33  20 4C 44 41 20 54 41 42  |0...T.P3 LDA TAB|
00000300: 2C 58 00 10 0B 5E 06 53  54 41 20 38 33 32 2C 58  |,X...^.STA 832,X|
00000310: 00 18 0B 68 06 49 4E 58  00 24 0B 72 06 43 50 58  |...h.INX.$.r.CPX|
00000320: 20 23 31 35 00 2F 0B 7C  06 42 4E 45 20 50 33 00  | #15./.|.BNE P3.|
00000330: 3A 0B 86 06 4A 4D 50 20  53 32 00 40 0B 90 06 21  |:...JMP S2.@...!|
00000340: 00 8B 0B 9A 06 54 41 42  20 42 59 54 20 32 35 35  |.....TAB BYT 255|
00000350: 2C 32 35 35 2C 32 35 35  2C 31 37 30 2C 31 37 30  |,255,255,170,170|
00000360: 2C 31 37 30 2C 38 35 2C  38 35 2C 38 35 2C 31 37  |,170,85,85,85,17|
00000370: 30 2C 31 37 30 2C 31 37  30 2C 32 35 35 2C 32 35  |0,170,170,255,25|
00000380: 35 2C 32 35 35 2C 30 2C  30 2C 30 00 91 0B A4 06  |5,255,0,0,0.....|
00000390: 21 00 9A 0B AE 06 53 32  20 21 00 A6 0B B8 06 4C  |!.....S2 !.....L|
000003A0: 44 41 20 23 32 39 00 B4  0B C2 06 53 54 41 20 35  |DA #29.....STA 5|
000003B0: 33 32 37 32 00 BF 0B CC  06 4C 44 58 20 23 30 00  |3272.....LDX #0.|
000003C0: C8 0B D6 06 4C 32 20 21  00 D8 0B E0 06 4C 44 41  |....L2 !.....LDA|
000003D0: 20 24 34 30 30 41 2C 58  00 E8 0B EA 06 53 54 41  | $400A,X.....STA|
000003E0: 20 24 30 34 30 41 2C 58  00 F8 0B F4 06 4C 44 41  | $040A,X.....LDA|
000003F0: 20 24 34 31 30 41 2C 58  00 08 0C FE 06 53 54 41  | $410A,X.....STA|
00000400: 20 24 30 35 30 41 2C 58  00 18 0C 08 07 4C 44 41  | $050A,X.....LDA|
00000410: 20 24 34 32 30 41 2C 58  00 28 0C 12 07 53 54 41  | $420A,X.(...STA|
00000420: 20 24 30 36 30 41 2C 58  00 3B 0C 1C 07 4C 44 41  | $060A,X.;...LDA|
00000430: 20 24 34 33 30 41 AB 34  30 2C 58 00 4E 0C 26 07  | $430A.40,X.N.&.|
00000440: 53 54 41 20 24 30 37 30  41 AB 34 30 2C 58 00 56  |STA $070A.40,X.V|
00000450: 0C 30 07 49 4E 58 00 61  0C 3A 07 42 4E 45 20 4C  |.0.INX.a.:.BNE L|
00000460: 32 00 69 0C 44 07 52 54  53 00 00 00              |2.i.D.RTS...    |

......V.53248.......49152.$...LDA #0.2..
.STA $D020.@...STA $D021.L...STA 646.Z..
.JSR $E544.G.$.LDA #255.T...STA V.21...8
.STA V.29...B.STA V.28...L.STA $D01B...V
.LDA #13...`.LDX #0.E.J.P1 STA 2040,X.M.
T.INX.X.~.CPX #8.....BNE P1.....LDA #1..
...STA $D025.....LDA #6.....STA $D026. .
..LDX #0.,.D.LDA #14.?.N.P2 STA $D027,X.
G.X.INX.R...CPX #8.]...BNE P2.C...!.O...
JSR SET.|...SETIRQ !.....SEI.....LDA #$7
F...(.STA $DC0D...2.LDA $DC0D...<.LDA #$
1B.H.F.STA $D011.U.P.LDA #$32...Z.STA $D
012...D.LDA #.IRQ...N.STA $314...X.LDA #
.IRQ.....STA $315.$...LDA #1.2...STA $D0
19.@. .STA $D01A.H...CLI.P...RTS.V...!.\
.H.!.F.R.IRQ !.T...JSR $2000.....INC $D0
19.....JMP $EA31.....!. ...SET !.....LDX
 #0.....LDA #0.G.".LL STA 832,X.O.,.INX.
..6.CPX #64...@.BNE LL...J.LDX #0...T.P3
 LDA TAB,X...^.STA 832,X...H.INX.$.R.CPX
 #15./.|.BNE P3.:...JMP S2.@...!.....TAB
 BYT 255,255,255,170,170,170,85,85,85,17
0,170,170,255,255,255,0,0,0.....!.....S2
 !.....LDA #29...B.STA 53272...L.LDX #0.
H.V.L2 !.X...LDA $400A,X.....STA $040A,X
.....LDA $410A,X.....STA $050A,X.....LDA
 $420A,X.(...STA $060A,X.;...LDA $430A.4
0,X.N.&.STA $070A.40,X.V.0.INX.A.:.BNE L
2.I.D.RTS...

Visualization:

Width: Skip load address (+2) Invert

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