diff --git a/constants/dss_equ.inc b/constants/dss_equ.inc
index 1a2ba9b..3545fe1 100644
--- a/constants/dss_equ.inc
+++ b/constants/dss_equ.inc
@@ -16,6 +16,16 @@ CLP_Parameters  EQU     1       ; 
 ; (CLP_CLLength) + 3            ; начало полного пути до запускаемого приложения (вместе с именем EXE)
 ;---------------------------------------
 
+FAT_ATTR:
+.ARCHIVE	EQU #20
+.DIRECTORY	EQU #10
+.VOLUME_ID	EQU #08
+.SYSTEM		EQU #04
+.HIDDEN		EQU #02
+.READ_ONLY	EQU #01
+.NoDIRnoVolID	EQU .READ_ONLY + .HIDDEN + .SYSTEM + .ARCHIVE
+.NoVolID	EQU .READ_ONLY + .HIDDEN + .SYSTEM + .DIRECTORY + .ARCHIVE
+.NoSYSnoVolID	EQU .READ_ONLY + .HIDDEN + .DIRECTORY + .ARCHIVE
 ;------------[DSS Functions]------------
 Dss:
 .Version        EQU     #00