diff --git a/20.dev b/20.dev
index 176134c..023d6e4 100644
Binary files a/20.dev and b/20.dev differ
diff --git a/ass1/echo.asm b/ass1/echo.asm
index ca52c25..44897bf 100644
--- a/ass1/echo.asm
+++ b/ass1/echo.asm
@@ -1,41 +1,40 @@
 echo START 0
-start 	LDA txt
-	JSUB char
-	JSUB nl
-
+start 	.LDCH txt
+	.JSUB char
+	.JSUB nl
+	LDA #txt
 	JSUB string
-
+	JSUB nl
 
 halt  J halt
 
 .char
-char	STA regA  
-        STB regB
+char	STB regB
 	STT regT
+	.STL regL
         STS regS .shranimo registre
 
-	WD 0x1
-
-        LDA regA  .obnovimo registre
+	WD #1
+  .obnovimo registre
 	LDB regB
-        LDT regT 
+        LDT regT
+	.LDL regL 
         LDS regS
 
 	RSUB
 
 .nl
-nl	STA regA  
-        STB regB
+nl      STB regB
 	STT regT
         STS regS .shranimo registre
 
-	LDCH nl
-	WD 0x1
-	LDX 1
+	LDCH newline
+	WD #1
+	LDX #1
 	LDCH newline, X
-	WD 0x1
+	WD #1
 
-        LDA regA  .obnovimo registre
+	 .obnovimo registre
 	LDB regB
         LDT regT 
         LDS regS
@@ -43,22 +42,26 @@ nl	STA regA
 	RSUB
 
 .string
-string	STA regA  
-        STB regB
+string  STA regA
+	STB regB
 	STT regT
+	STL regL
         STS regS .shranimo registre
 
-loop	CLEAR	X
-	LDB #1
-	LDCH regA, X
-	JSUB char
-	ADDR X, B
+loop	LDB #1
+	LDCH @regA
 	COMP #0
+	JSUB char
+	.add +1 to regA
+	LDA regA
+	ADD #1
+	STA regA
 	JGT loop	
 
         LDA regA  .obnovimo registre
 	LDB regB
         LDT regT 
+	LDL regL
         LDS regS
 
 	RSUB
@@ -79,5 +82,7 @@ regA     RESW  1
 regB     RESW  1
 regT     RESW  1
 regS     RESW  1
+regL     RESW  1
+
 
  END start
\ No newline at end of file