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toinet Site Admin
Inscrit le: 15 Juin 2007 Messages: 3020 Localisation: Le Chesnay, France
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Posté le: Jeu 14 Sep 2017, 14:29 Sujet du message: Stickybear Typing 3.5" (Optimum Resource, 1985) |
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#955 - Another eduware to learn typing on a keyboard. Thanks Alex for the disk image.
Disk structure
A non-OS 800k 3.5" disk. Bad blocks $56 to $5F
Protection type
A check of the bad blocks, here $56. If it generates an I/O error then we have an original disk, otherwise we have a copy.
How to copy
Boot my copy disk and launch ZZCopy or Photonix II to copy your original disk. Then, store it in a dry and safe place.
How to normalize
Launch Block Warden and
Code: |
Prefix /SB.TYPING
Follow file LOADER.SYSTEM
At offset $5C: B0 -> 90 or
At offset $5E: 4C -> 2C
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The disk image is available at http://www.brutaldeluxe.fr/crack/
Reboot and... enjoy,
LoGo
9/2017 |
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toinet Site Admin
Inscrit le: 15 Juin 2007 Messages: 3020 Localisation: Le Chesnay, France
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Posté le: Jeu 14 Sep 2017, 14:31 Sujet du message: |
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And the code
Code: |
Block: $0027 (39) Volume name: SB.TYPING Wednesday 14-Sep-17 3:14
Prefix: /SB.TYPING/
Following: LOADER.SYSTEM, Type SYS, Rel block 1, Byte $000000
1000: A9 02 LDA #$02 ). 1031: BD 00 40 LDA $4000,X =.@
1002: 20 75 20 JSR $2075 u 1034: 9D 00 B7 STA $B700,X ..7
1005: AD 36 C0 LDA $C036 -6@ 1037: CA DEX J
1008: 29 7F AND #$7F ) 1038: D0 F7 BNE $1031 Pw
100A: 8D 36 C0 STA $C036 .6@ 103A: A9 6A LDA #$6A )j
100D: AD 34 C0 LDA $C034 -4@ 103C: 8D 68 20 STA $2068 .h
1010: 29 F0 AND #$F0 )p 103F: 20 00 BF JSR $BF00 .?
1012: 8D 34 C0 STA $C034 .4@ 1042: 80 (read block) .
1015: AD 30 BF LDA $BF30 -0? 1043: 64 20 d
1018: 8D 65 20 STA $2065 .e 1045: A2 00 LDX #$00 ".
101B: 8D 6B 20 STA $206B .k 1047: BD 00 41 LDA $4100,X =.A
101E: 20 00 BF JSR $BF00 .? 104A: 9D B5 B7 STA $B7B5,X .57
1021: 80 (read block) . 104D: CA DEX J
1022: 64 20 d 104E: D0 F7 BNE $1047 Pw
1024: A2 00 LDX #$00 ". 1050: AD 30 BF LDA $BF30 -0?
1026: BD 00 41 LDA $4100,X =.A 1053: 8D 9B B8 STA $B89B ..8
1029: 9D 00 B6 STA $B600,X ..6 1056: 20 00 BF JSR $BF00 .? ; read block
102C: CA DEX J 1059: 80 (read block) .
102D: D0 F7 BNE $1026 Pw 105A: 6A 20 j
102F: A2 00 LDX #$00 ". 105C: B0 03 BCS $1061 0. ; error = original
105E: 4C 00 00 JMP $0000 L.. ; or a copy, crash!
1061: 4C 00 B7 JMP $B700 L.7
1064: 03 50 ORA $50,S .P
1066: 00 BRK .
1067: 40 RTI @
1068: 6B RTL k
1069: 00 BRK .
106A: 03 50 ORA $50,S .P ; S5,D1
106C: 00 BRK . ; buffer $4000
106D: 40 RTI @
106E: 56 00 LSR $00,X V. ; block $56
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