add support for identifying Diversi-DOS bootloader

src/id/daviddos.a

@@ -23,9 +23,9 @@ IDDavid
          ldx   #$4A
          ldy   #$0B
          jsr   compare    ; and T00,S00,$4A ==
-         !byte $A2,$0D    ; LDX #$0D
+         !byte $A2,WILDCARD    ; LDX #$**
-         !byte $BD,$B9,$08; LDA $08B9,X
+         !byte $BD,WILDCARD,$08; LDA $08**,X
-         !byte $9D,$0D,$04; STA $040D,X
+         !byte $9D,WILDCARD,$04; STA $04**,X
          !byte $CA        ; DEX
          !byte $10,$F7    ; BPL -
 .exit    rts

src/id/diversidos.a

@@ -0,0 +1,20 @@
+;-------------------------------
+; IDDiversiDOS
+; identify Diversi-DOS bootloader
+;
+; in:  $0800..$08FF contains T00,S00
+;      first page of track buffer also contains T00,S00
+; out: C clear if Diversi-DOS bootloader found
+;      C set otherwise
+;      all registers clobbered
+;      all other flags clobbered
+;-------------------------------
+!zone {
+IDDiversiDOS
+         lda   #$00
+         ldx   #$F1
+         ldy   #$0B
+         jsr   compare    ; if T00,S00,$F1 ==
+         !byte $B3,$A3,$A0,$D2,$CF,$D2,$D2,$C5,$8D,$87,$8D
+         rts
+}

src/id/inspect0.a

@@ -51,7 +51,12 @@ IDBootloader
          bcs   +
          lda   #TRUE
          sta   gIsBoot0
+         jsr   IDDiversiDOS
+         bcc   .diversi
          lda   #s_dosb0
+         !byte $2c
+.diversi
+         lda   #s_diversidos
          jsr   PrintByID
          jmp   TraceDOS33
 ;

src/passport.a

@@ -94,7 +94,7 @@ flag     =     $FF        ; byte
 }
 
 ; Application constants (not zero addresses)
-RELBASE  =     $6400      ; address to move Passport code
+RELBASE  =     $6300      ; address to move Passport code
                           ; so that it's out of the way
 LOWPOINT =     $4300      ; lowest available address for code
 BASEPAGE =     $10        ; Special Delivery tracer assumes
@@ -155,6 +155,7 @@ FirstMover
          !source "id/milliken.a"
          !source "id/daviddos.a"
          !source "id/quickdos.a"
+         !source "id/diversidos.a"
          !source "print.a"
          !source "compare.a"
          !source "modify.a"

src/strings/en.a

@@ -94,7 +94,8 @@ s_milliken =   $4B
 s_jsr8b3 =     $4C
 s_daviddos =   $4D
 s_quickdos =   $4E
-STRINGCOUNT =  $4F
+s_diversidos = $4F
+STRINGCOUNT =  $50
 
 !zone {
 StringTable
@@ -177,6 +178,7 @@ StringTable
          !word .jsr8b3
          !word .daviddos
          !word .quickdos
+         !word .diversidos
 ;
 ; Text can contain substitution strings, which
 ; are replaced by current values at runtime. Each
@@ -449,4 +451,6 @@ StringTable
          !text "T00,S00 Found David-DOS bootloader",$8D,00
 .quickdos
          !text "T00,S00 Found Quick-DOS bootloader",$8D,00
+.diversidos
+         !text "T00,S00 Found Diversi-DOS bootloader",$8D,00
 }