diff --git a/homework4/.eide/eide.json b/homework4/.eide/eide.json
index 8c6e288..27a88af 100644
--- a/homework4/.eide/eide.json
+++ b/homework4/.eide/eide.json
@@ -18,7 +18,9 @@
   },
   "targets": {
     "Debug": {
-      "excludeList": [],
+      "excludeList": [
+        "src/test2.c"
+      ],
       "toolchain": "Keil_C51",
       "compileConfig": {
         "options": "null"
diff --git a/homework4/homework4.pdsprj b/homework4/homework4.pdsprj
index 1c94be2..ca058b3 100644
Binary files a/homework4/homework4.pdsprj and b/homework4/homework4.pdsprj differ
diff --git a/homework4/src/homework4.h b/homework4/src/homework4.h
index 8e701c5..caa7d2b 100644
--- a/homework4/src/homework4.h
+++ b/homework4/src/homework4.h
@@ -6,17 +6,17 @@
 
 #include <REG52.H>
 
-sbit ADDR0 = P1 ^ 0;
-sbit ADDR1 = P1 ^ 1;
-sbit ADDR2 = P1 ^ 2;
-sbit ADDR3 = P1 ^ 3;
-sbit ENLED = P1 ^ 4;
+sbit D_ADDR0 = P1 ^ 0;
+sbit D_ADDR1 = P1 ^ 1;
+sbit D_ADDR2 = P1 ^ 2;
+sbit D_ADDR3 = P1 ^ 3;
+sbit ENLED   = P1 ^ 4;
 
-sbit D1 = P2 ^ 7;
-sbit D2 = P2 ^ 6;
-sbit D3 = P2 ^ 5;
-sbit D4 = P2 ^ 4;
-sbit D5 = P2 ^ 3;
-sbit D6 = P2 ^ 2;
-sbit D7 = P2 ^ 1;
-sbit D8 = P2 ^ 0;
\ No newline at end of file
+sbit D1 = P2 ^ 0;
+sbit D2 = P2 ^ 1;
+sbit D3 = P2 ^ 2;
+sbit D4 = P2 ^ 3;
+sbit D5 = P2 ^ 4;
+sbit D6 = P2 ^ 5;
+sbit D7 = P2 ^ 6;
+sbit D8 = P2 ^ 7;
\ No newline at end of file
diff --git a/homework4/src/test1.c b/homework4/src/test1.c
index 8eb9065..8e67f71 100644
--- a/homework4/src/test1.c
+++ b/homework4/src/test1.c
@@ -8,10 +8,10 @@ unsigned char cnt = 0; // log timer T0 overflow counts
 void main()
 {
     ENLED = 0;
-    ADDR3 = 1;
-    ADDR2 = 1;
-    ADDR1 = 1;
-    ADDR0 = 0;
+    D_ADDR3 = 1;
+    D_ADDR2 = 1;
+    D_ADDR1 = 1;
+    D_ADDR0 = 0;
 
     TMOD = 0x01; // timer T0 mode 1, 16-bit timer
     TH0  = 0XB8;