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support new King's Quest protection (#97)

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This commit is contained in:
Peter Ferrie 2020-01-04 08:55:43 -08:00 committed by 4am
parent 2ec1105c5f
commit 3a2a4c0c4f
2 changed files with 60 additions and 51 deletions
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109
src/patchers/sierra.a
View File

@ -314,76 +314,85 @@
;two of these are on the same track
++ ldy #17
++ ldy #10
jsr SearchTrack
!byte $A5,$12 ;LDA $12
!byte $C9,$FC ;CMP #$FC
!byte $D0,$06 ;BNE *+8
!byte $A5,$13 ;LDA $13
!byte $C9,$D5 ;CMP #$D5
!byte $F0,$08 ;BEQ *+10
!byte $A9,$00 ;LDA #$00
!byte $AA ;TAX
!byte $95,$00 ;STA $00,X
!byte $F0,$08 ;BEQ *+10
!byte $A9,$00 ;LDA #$00
!byte $AA ;TAX
!byte $95,$00 ;STA $00,X
!byte WILDCARD ;INX or DEX
!byte $D0,$FB ;BNE *-5
bcs +
sta gDisplayBytes
pha
lda #s_tamper
jsr PrintByID
txa
adc #9
adc #5
tax
pla
ldy #$01
jsr modify
!byte $DD ;checksum
sta .patchstyle
ldy #11
jsr SearchTrack
!byte $A5,$12 ;LDA $12
!byte $C9,$F9 ;CMP #$F9
!byte $F0,$08 ;BEQ *+10
!byte $A9,$00 ;LDA #$00
!byte $AA ;TAX
!byte $95,$00 ;STA $00,X
+ bcs +
sta gDisplayBytes
pha
lda #s_tamper
jsr PrintByID
pla
inx
inx
inx
ldy #$01
jsr modify
!byte $F8 ;checksum
bvc .jmpexit
!byte $B5 ;load instead of store
+ ldy #19
ldy #24
jsr SearchTrack
!byte $A5,$12 ;LDA $12
!byte $C9,$1B ;CMP #$1B
!byte $D0,$07 ;BNE *+9
!byte $A5,$13 ;LDA $13
!byte $C9,$37 ;CMP #$37
!byte $D0,$01 ;BNE *+3
!byte $60 ;RTS
!byte $A9,$00 ;LDA #$00
!byte $AA ;TAX
!byte $9D,$00,$01 ;STA $0100,X
bcs .jmpexit
!byte $AD,WILDCARD,WILDCARD ;LDA $xxxx
!byte $CD,WILDCARD,WILDCARD ;CMP $xxxx
!byte $D0,$40 ;BNE *+$42
!byte $AD,WILDCARD,WILDCARD ;LDA $xxxx
!byte $CD,WILDCARD,WILDCARD ;CMP $xxxx
!byte $D0,$38 ;BNE *+$3A
!byte $AD,WILDCARD,WILDCARD ;LDA $xxxx
!byte $CD,WILDCARD,WILDCARD ;CMP $xxxx
!byte $D0,$30 ;BNE *+$32
bcs +
sta gDisplayBytes
pha
lda #s_tamper
jsr PrintByID
pla
inx
inx
inx
ldy #$01
jsr modify
!byte $19 ;checksum
!byte $60 ;just return
+ ldy #15
jsr SearchTrack
!byte $A9,$00 ;LDA #$00
!byte $85,$57 ;STA $57
!byte $A9,$FF ;LDA #$FF
!byte $85,$58 ;STA $58
!byte $A9,$02 ;LDA #$02
!byte $85,$59 ;STA $59
!byte $20,$99,$4C ;JSR $4C99
bcs +
pha
txa
adc #12
tax
pla
ldy #$01
jsr modify
!byte $2C ;don't load sector #$10
+ ldy #13
jsr SearchTrack
!byte $A9,$00 ;LDA #$00
!byte $85,$59 ;STA $59
!byte $20,WILDCARD,WILDCARD ;JSR $xxxx
!byte $68 ;PLA
!byte $D0,$20 ;BNE *+$22
!byte $20,$00,$FF ;JSR $FF00
bcs +
pha
txa
adc #10
tax
pla
ldy #$01
jsr modify
!byte $2C ;don't call protection check
.jmpexit
jmp .exit

2
src/strings/en.a
View File

@ -282,7 +282,7 @@ StringTableHigh
; can be set directly before calling PrintByID.
;
.header
!text "Passport by 4am 2019-12-06",$00
!text "Passport by 4am 2020-01-03",$00
.mainmenu
!text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D,$8D
!text " "