MEGA65 banner now displays internal device numbers

src/dos_m65/,aliases_dos.s

@@ -3,7 +3,6 @@
 ;
 
 ; NOTES:
-; - DOS zeropage is mirrored at $8000
 ; - starting from $8000, 16KB RAM is available (starting from $10000 in C65 address space)
 ; - additional 16KB RAM is reserved for DOS too ($14000-$17FFF), and can be banked-in if needed
 
@@ -13,14 +12,14 @@
 	; Page 0
 	;
 
-	!addr MAGICSTR         = $00 ; magic string; if not matching, DOS considered non-functional
+	!addr MAGICSTR         = $8000 ; magic string; if not matching, DOS considered non-functional
 
 	; General DOS configuration
 
-	!addr UNIT_SDCARD      = $05
-	!addr UNIT_FLOPPY      = $06
-	!addr UNIT_RAMDISK     = $07
+	!addr UNIT_SDCARD      = $8005
+	!addr UNIT_FLOPPY      = $8006
+	!addr UNIT_RAMDISK     = $8007
 
 	; General DOS status
 
-	!addr UNIT_HANDLER     = $08
+	!addr UNIT_HANDLER     = $8008

src/dos_m65/dos_unitnum.s

@@ -20,30 +20,31 @@ dos_UNITNUM:
 	cmp #$02
 	beq dos_UNITNUM_ramdisk
 
-	lda #$00
-
 	; FALLTROUGH
 
 dos_UNITNUM_none:
 
+	lda #$00
+
 	sec
 	rts
 
 dos_UNITNUM_sdcard:
 
 	lda UNIT_SDCARD
-
-	+skip_2_bytes_trash_nvz
+	bra dos_UNITNUM_common
 
 dos_UNITNUM_floppy:
 
 	lda UNIT_FLOPPY
-
-	+skip_2_bytes_trash_nvz
+	bra dos_UNITNUM_common
 
 dos_UNITNUM_ramdisk:
 
 	lda UNIT_RAMDISK
+	bra dos_UNITNUM_common
+
+dos_UNITNUM_common:
 
 	cmp #$00
 	beq dos_UNITNUM_none