add support for HAL Labs protection check [fixes Sheila, Super Taxman II]

src/passport.a

@@ -841,6 +841,7 @@ _applyToAll
          !source "patchers/ssi.a"               ; gIsRDOS13 only
          !source "patchers/rdosfmt.a"           ; gIsRDOS13 only
          !source "patchers/aacount.a"
+         !source "patchers/hallabs.a"           ; T01 only
 
          lda   gPatchCount
          beq   .nopatches

src/patchers/hallabs.a

@@ -0,0 +1,50 @@
+;-------------------------------
+; #HALLABS
+; checks nibbles on track $22
+;
+; tested on
+; Sheila (HAL Labs)
+; Super Taxman II (HAL Labs)
+;-------------------------------
+!zone {
+         bit   gMode      ; nothing to do here in verify-only mode
+         bpl   .exit
+         lda   gIsBoot0
+         bne   .exit
+         lda   gTrack
+         cmp   #$01
+         bne   .exit
+
+         ldy   #(@search1end-@search1start)
+         jsr   SearchTrack
+@search1start
+         LDX   $B7E9
+         LDA   $C089,X
+         LDA   $C08E,X
+         LDA   #$00
+@search1end
+         bcs   .exit
+
+         ldy   #(@search2end-@search2start)
+         jsr   SearchTrack
+@search2start
+         !byte $20,WILDCARD,WILDCARD
+         !byte $20,WILDCARD,WILDCARD
+         LDA   #$00
+         STA   $10
+         LDA   #$20
+         STA   $11
+         !byte $20
+@search2end
+         bcs   .exit
+
+         sta   gDisplayBytes
+         pha
+         lda   #s_hallabs
+         jsr   PrintByID
+         pla
+         ldy   #$01
+         jsr   modify
+         RTS
+.exit
+}

src/strings/en.a

@@ -128,6 +128,7 @@ StringTable
          !word .sector13
          !word .dakin5
          !word .springboard
+         !word .hallabs
 ;
 ; Text can contain substitution strings, which
 ; are replaced by current values at runtime. Each
@@ -472,4 +473,6 @@ StringTable
 .springboard
          !text "T%t,S%0 RWTS requires a timing bit after"
          !text "the address epilogue",$8D,$00
+.hallabs
+         !text "T%t,S%0 Found HAL Labs protection check",$8D,$00
 }

src/strings/enid.a

@@ -114,4 +114,5 @@ s_toverify =   $6C
 s_13sector =   $6D
 s_dakin5 =     $6E
 s_springboard =$6F
-STRINGCOUNT =  $70
+s_hallabs =    $70
+STRINGCOUNT =  $71