don't crash on SVE DOS (#99)

* simplify build

* don't crash on SVE DOS

src/analyze.a

@@ -476,3 +476,23 @@ IsEATrack6
          sbc   #5
          cmp   #1
 +        rts
+
+;-------------------------------
+; xSVE
+; check if disk has SVE bootloader
+; which has a hook in the RWTS
+;
+; in:  $0800..$08FF contains boot0
+;      $B600..$BFFF contains boot1
+; out: C clear if SVE bootloader was found
+;      C set otherwise
+;-------------------------------
+!zone {
+xSVE
+         lda   #$BE
+         ldx   #$5A
+         ldy   #$03
+         jsr   CompareMemory
+         !byte $4C,$71,$A9
+         rts
+}

src/passport.a

@@ -294,6 +294,15 @@ ADStyle
          lda   #s_optimum
          jsr   PrintByID
 .noOptimum
+         jsr   xSVE
+         bcs   .noSVE
+         lda   #s_sve
+         jsr   PrintByID
+         lda   #$CA
+         sta   $BE5B
+         lda   #$B6
+         sta   $BE5C
+.noSVE
          jsr   xB660
          jsr   xB4BB
          jmp   ReadWithRWTS

src/strings/en.a

@@ -135,6 +135,7 @@ StringTableLow
          !byte <.e7everywhere
          !byte <.choplifter
          !byte <.pdi
+         !byte <.sve
 
 StringTableHigh
          !byte >.header
@@ -256,6 +257,7 @@ StringTableHigh
          !byte >.e7everywhere
          !byte >.choplifter
          !byte >.pdi
+         !byte >.sve
 
 ;
 ; Text can contain substitution strings, which
@@ -282,7 +284,7 @@ StringTableHigh
 ; can be set directly before calling PrintByID.
 ;
 .header
-         !text "Passport by 4am               2020-07-02",$00
+         !text "Passport by 4am               2020-07-12",$00
 .mainmenu
          !text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D,$8D
          !text "               "
@@ -611,4 +613,6 @@ StringTableHigh
          !text "Roland was here, but he left...",$8D,$00
 .pdi
          !text "T%t,S%0 Found PDI protection check",$8D,$00
+.sve
+         !text "T%t,S%0 Found SVE protection check",$8D,$00
 }

src/strings/enid.a

@@ -121,4 +121,5 @@ s_diskvol0 =   $73
 s_e7everywhere=$74
 s_choplifter = $75
 s_pdi        = $76
-STRINGCOUNT =  $77
+s_sve        = $77
+STRINGCOUNT =  $78