work towards directory reading in CBDOS

src/dos_m65/assets/dos_error_strings.s

@@ -9,7 +9,7 @@
 
 dos_err_init_sdcard:
 
-	!pet "73,m65 dos sdcard,00,00", 0
+	!pet "73,m65 dos sd card,00,00", 0
 
 dos_err_init_floppy:
 
@@ -25,7 +25,7 @@ dos_err_init_ramdisk:
 
 dos_err_00: ; not an error
 
-	!pet "ok", 0
+	!pet " ok", 0
 
 dos_err_01: ; not an error
 

src/dos_m65/assets/dos_parts_dir.s

@@ -0,0 +1,33 @@
+
+;
+; Data used to generate directory in CBM BASIC format
+;
+
+dir_hdr:                     ; 32 bytes - header
+
+	!byte $01, $08           ; program location
+	!byte $01, $01           ; link to the next line - dummy, will be regenerated by BASIC
+	!byte $00, $00           ; line number 0
+	!byte $12, $22           ; reverse mode, quote
+	!pet "                "  ; space for disk/directory name
+    !byte $22, $20           ; quote, space
+	!pet "00 2a"             ; default ID, disk format
+	!byte $00                ; end of the line
+
+dir_hdr_sd:                  ; 32 bytes - header
+
+	!byte $01, $08           ; program location
+	!byte $01, $01           ; link to the next line - dummy, will be regenerated by BASIC
+	!byte $00, $00           ; line number 0
+	!byte $12, $22           ; reverse mode, quote
+	!pet "SD CARD         "  ; space for disk/directory name
+    !byte $22, $20           ; quote, space
+	!pet "fat32"             ; filesystem
+	!byte $00                ; end of the line
+
+dir_end:                     ; 19 bytes
+
+	!byte $01, $01           ; link to the next line - dummy, will be regenerated by BASIC
+	!byte $00, $00           ; line number 0
+	!pet "blocks free."
+	!byte $00, $00, $00      ; end of the line, end of program marker