use ReadSector for track 0 pre-read on DOS 3.3 disks

src/id/trace33.a

@@ -15,12 +15,8 @@ TraceDOS33
          sta   gTrack
          lda   #$09
          sta   gSector
-         lda   #$00
-         sta   $b991
 precheck
-         ldy   #<gRWTSParams
+         jsr   ReadSector
-         lda   #>gRWTSParams
-         jsr   $BD00
          bcc   +
          jmp   FatalError
 +

src/passport.a

@@ -289,8 +289,6 @@ Action
          sta   TEXTTOP
          lda   #s_reading
          jsr   PrintByID
-         lda   #$00
-         sta   $b991
          ldy   #<gRWTSParams ; call universal RWTS to see
          lda   #>gRWTSParams ; if T00,S00 is readable
          jsr   $BD00         ; (only care about the return code)
@@ -301,8 +299,6 @@ Action
          jsr   PrintByID
          jmp   TheEnd
 .checkt00s00
-         lda   #$02
-         sta   $b991
          jmp   IDBootloader ; /src/id/inspect0
 
 

src/strings/en.a

@@ -234,7 +234,7 @@ StringTable
 ; can be set directly before calling PrintByID.
 ;
 .header
-         !text "Passport by 4am               2017-10-21",$00
+         !text "Passport by 4am               2017-10-25",$00
 .mainmenu
          !text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D
          !text "              "