Adjusted constructors.

The constructors are _NOT_ allowed anymore to access the BSS. Rather they must use the DATA segment or the INIT segment. The latter isn't cleared at any point so the constructors may use it to expose values to the main program. However they must make sure to always write the values as they are not pre-initialized.

libsrc/atari/dosdetect.s

@@ -48,6 +48,6 @@ done:   rts
 ; ------------------------------------------------------------------------
 ; Data
 
-        .bss
+        .data
 
-__dos_type:     .res    1       ; default to ATARIDOS
+__dos_type:     .byte   0       ; default to ATARIDOS

libsrc/atari/getargs.s

@@ -23,12 +23,6 @@ SPACE   = 32            ; SPACE char.
 .segment        "ONCE"
 
 initmainargs:
-        lda     #0
-        sta     __argc
-        sta     __argc+1
-        sta     __argv
-        sta     __argv+1
-
         lda     __dos_type      ; which DOS?
         cmp     #ATARIDOS
         beq     nargdos         ; DOS does not support arguments
@@ -120,7 +114,7 @@ eopar:
 
 finargs:
         lda     __argc
-        asl           
+        asl
         tax
         lda     #0
         sta     argv,x
@@ -134,7 +128,7 @@ finargs:
 ; --------------------------------------------------------------------------
 ; Data
 
-.bss
+.segment        "INIT"
 
 argv:   .res    (1 + MAXARGS) * 2