NEW: patch encrypted FBFF checks used by Polarware and others

src/passport.a

@@ -744,6 +744,8 @@ _applyToAll
          !source "patchers/rwtsswapmecc.a"      ; gIsMECCFastloader only
          !source "patchers/protecteddos.a"      ; gIsProtDOS only
          !source "patchers/fbff.a"
+         !source "patchers/fbffencrypted.a"     ; gIsProDOS only
+         !source "patchers/polarware.a"         ; gIsProDOS only
          !source "patchers/sierra.a"            ; gIsBoot0 only
          !source "patchers/corrupter.a"         ; T13 only
          !source "patchers/ea.a"                ; (gIsEA || gIsBoot0) only

src/patchers/fbffencrypted.a

@@ -0,0 +1,45 @@
+;-------------------------------
+; #FBFFENCRYPTED
+; an encrypted variant of Activision's Timing Bit Detection
+;
+; see 4am crack no. 622 The Electric Crayon: ABCs
+; for full explanation
+;
+; tested on many Polarware disks:
+; The Electric Crayon: ABCs (1986)
+; The Electric Crayon: Fun on the Farm (1986)
+; The Electric Crayon: This Land is Your Land (1986)
+; The Spy's Adventures in North America
+; The Spy's Adventures in Europe
+; The Crimson Crown
+; Oo-Topos
+;
+; and several non-Polarware disks:
+; Clue Master Detective
+; RISK (1988, Leisure Genius)
+; ESL Writer (1989, Scholastic)
+; Magic Spells v2.1 (1985, The Learning Company)
+;
+;-------------------------------
+!zone {
+         lda   gIsProDOS             ; only seen this protection on ProDOS disks
+         bne   .exit
+         ldy   #$06
+         jsr   SearchTrack
+         !byte $39,$FD
+         !byte $2F,$FB
+         !byte $39,$FC
+         bcs   .exit
+         inx
+         inx
+         inx
+         sta   gDisplayBytes
+         pha
+         lda   #s_fbff
+         jsr   PrintByID
+         pla
+         ldy   #$01
+         jsr   modify
+         !byte $A2
+.exit
+}

src/patchers/polarware.a

@@ -0,0 +1,38 @@
+;-------------------------------
+; #POLARWARE
+; a delayed secondary protection check
+; seen on Polarware games
+; similar to #FBFFENCRYPTED but the encryption key is different
+; and the routine ultimately returns regardless of success or failure
+; (but the value in the accumulator is different and is used later
+; to trigger hilarious in-game failure)
+;
+; tested on
+; The Spy's Adventures in North America
+; The Spy's Adventures in Europe
+; The Crimson Crown
+; Oo-Topos
+;
+;-------------------------------
+!zone {
+         lda   gIsProDOS             ; only seen this protection on ProDOS disks
+         bne   .exit
+         ldy   #$06
+         jsr   SearchTrack
+         !byte $29,$6D
+         !byte $3F,$EB
+         !byte $29,$60
+         bcs   .exit
+         inx
+         inx
+         inx
+         sta   gDisplayBytes
+         pha
+         lda   #s_fbff
+         jsr   PrintByID
+         pla
+         ldy   #$01
+         jsr   modify
+         !byte $B2
+.exit
+}

src/strings/en.a

@@ -138,7 +138,7 @@ StringTable
 ; can be set directly before calling PrintByID.
 ;
 .header
-         !text "Passport by 4am               2018-01-25",$00
+         !text "Passport by 4am               2018-01-26",$00
 .mainmenu
          !text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D
          !text "              "