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Merge pull request #50 from peterferrie/master
support Interplay Advent games
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71
src/id/advent.a
Normal file
71
src/id/advent.a
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@ -0,0 +1,71 @@
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;-------------------------------
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; IDAdvent
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; identify Interplay custom bootloader
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;
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; in: track buffer contains T00,S00
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; out: C clear if Interplay bootloader was found
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; C set if not found
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; all other flags clobbered
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; all registers clobbered
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;
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; module by qkumba
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;-------------------------------
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IDAdvent
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lda #BASEPAGE
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ldy #33
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jsr SearchSector
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!byte $2C,$83,$C0 ;BIT $C083
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!byte $2C,$83,$C0 ;BIT $C083
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!byte $A9,$FF ;LDA #$FF
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!byte $8D,$00,$E0 ;STA $E000
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!byte $EE,$00,$E0 ;INC $E000
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!byte $D0,WILDCARD ;BNE $+xx
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!byte $A2,$00 ;LDX #$00
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!byte $BD,WILDCARD,$08 ;LDA $08xx,X
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!byte $F0,$06 ;BEQ $+8
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!byte $9D,$D8,$07 ;STA $07D8,X
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!byte $E8 ;INX
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!byte $D0,$F5 ;BNE $-8
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!byte $A6,$2B ;LDX $2B
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!byte $4C,$00 ;JMP $xx00
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rts
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foundadvent
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;
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; We found an Interplay bootloader. Now we create
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; an RWTS that can read the rest of the disk.
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; Starting with our built-in RWTS, we modify address
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; and data prologues based on the parameters of the
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; original disk.
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;
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!zone {
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lda #s_advent
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jsr PrintByID
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jsr CopyUniversal
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;hook read address prologue
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lda #<.checktrk
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sta $BDC5
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lda #>.checktrk
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sta $BDC6
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jmp ADStyle
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.prologtbl1
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!byte $96, $97, $9A, $9B, $9D, $9E, $9F, $A6
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!byte $ED, $EE, $EF, $F2, $F3, $F4, $F5, $F6
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.prologtbl2
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!byte $ED, $EE, $EF, $F2, $F3, $F4, $FF, $F7
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!byte $96, $A6, $AA, $D5, $DF, $EA, $AE, $FE
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.checktrk
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lda gTrack
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beq +
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and #$0f
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tay
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lda .prologtbl1, y
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sta UNIV_A2
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lda .prologtbl2, y
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sta UNIV_A3
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+ jmp $B944
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}
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@ -140,6 +140,13 @@ IDBootloader
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bcs +
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jmp foundea
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;
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; Try to identify Interplay bootloader.
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; Exit via custom trace function if found.
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;
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+ jsr IDAdvent
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bcs +
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jmp foundadvent
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;
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; Try to identify hybrid 16-/13-sector bootloader on
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; DOS 3.2 disks.
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; Exit via custom trace function if found.
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@ -108,6 +108,7 @@ AnalyzeT00
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!source "../patchers/dos32.a"
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!source "../patchers/dos32dlm.a"
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!source "../patchers/microfun.a"
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!source "../patchers/advent.a"
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;add only above this line
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rts
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@ -147,6 +147,7 @@ FirstMover
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!source "id/micrograms.a"
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!source "id/volumename.a"
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!source "id/dinkeydos.a"
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!source "id/advent.a"
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!source "print.a"
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!source "compare.a"
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!source "modify.a"
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80
src/patchers/advent.a
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80
src/patchers/advent.a
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@ -0,0 +1,80 @@
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;-------------------------------
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; #Advent
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; patched RWTS
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;
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; Borrowed Time
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; Mindshadow
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; Tracer Sanction
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;
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; module by qkumba
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;-------------------------------
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!zone {
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clc
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.again php
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ldy #29
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jsr SearchTrack
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!byte $F0,$10 ;BEQ $+12
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!byte $29,$0F ;AND #$0F
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!byte $A8 ;TAY
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!byte $B9,WILDCARD,WILDCARD ;LDA $xxxx,Y
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!byte $8D,WILDCARD,WILDCARD ;STA $xxxx
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!byte $B9,WILDCARD,WILDCARD ;LDA $xxxx,Y
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!byte $8D,WILDCARD,WILDCARD ;STA $xxxx
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!byte $60 ;RTS
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!byte $A9,$AA ;LDA #$AA
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!byte $8D,WILDCARD,WILDCARD ;STA $xxxx
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!byte $A9,$96 ;LDA #$96
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!byte $8D,WILDCARD,WILDCARD ;STA $xxxx
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!byte $60 ;RTS
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bcs .pop
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ldy #1
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jsr modify
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!byte $10 ;BEQ -> BPL
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ldy #23
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jsr SearchTrack
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!byte $A4,WILDCARD ;LDY $xx
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!byte $BD,$8C,$C0 ;LDA $C08C,X
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!byte $10,$FB ;BPL $-3
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!byte $D9,WILDCARD,WILDCARD ;CMP $xxxx,Y
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!byte $D0,$AB ;BNE $-53
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!byte $EA ;NOP
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!byte $BD,$8C,$C0 ;LDA $C08C,X
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!byte $10,$FB ;BPL $-3
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!byte $D9,WILDCARD,WILDCARD ;CMP $xxxx,Y
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!byte $D0,$A0 ;BNE $-5E
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bcs .pop
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pha
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txa
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adc #7
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tax
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pla
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adc #0
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pha
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txa
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adc #11
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sta .patch+1
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pla
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tay
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adc #0
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pha
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tya
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ldy #3
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jsr modify
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!byte $C9,$DE ;CMP #$DE
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!byte $EA ;NOP
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pla
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.patch
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ldx #0
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ldy #3
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jsr modify
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!byte $C9,$AA ;CMP #$AA
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!byte $EA ;NOP
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plp
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bcs .exit
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sec
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jmp .again
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.pop
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plp
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.exit
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}
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@ -115,6 +115,7 @@ StringTable
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!word .trillium
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!word .tamper
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!word .microfun
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!word .advent
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;
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; Text can contain substitution strings, which
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; are replaced by current values at runtime. Each
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@ -140,7 +141,7 @@ StringTable
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; can be set directly before calling PrintByID.
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;
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.header
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!text "Passport by 4am 2018-05-08",$00
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!text "Passport by 4am 2018-05-25",$00
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.mainmenu
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!text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D
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!text " "
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@ -436,4 +437,6 @@ StringTable
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!text "T%t,S%0 Found anti-tamper check",$8D,$00
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.microfun
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!text "T%t,S%0 Found Micro Fun protection check",$00
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.advent
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!text "T%t,S%0 Found Interplay protection check",$00
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}
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@ -103,4 +103,5 @@ s_dinkeydos = $61
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s_trillium = $62
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s_tamper = $63
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s_microfun = $64
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STRINGCOUNT = $65
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s_advent = $65
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STRINGCOUNT = $66
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