diff --git a/lab2/prog2.asm b/lab2/prog2.asm
index 6a5afa7..78c3137 100644
--- a/lab2/prog2.asm
+++ b/lab2/prog2.asm
@@ -5,16 +5,16 @@ RESET:
     mov.w   #0x400,         SP
     mov.w   #WDTPW|WDTHOLD, &WDTCTL
     mov.b   #11110111b,     &P1DIR      ; all pins outputs except P1.3
-    mov.b   #00001000b,     &P1REN      ; enable resistor for P1.3
+    mov.b   #00001000b,     &P1REN      ; enable resistor pull for P1.3
     mov.b   #00001000b,     &P1IE       ; P1.3 set as an interrupt
-    mov.w   #0x0049,        R7          ; R7 = 0000 0000 0100 1001
+    mov.b   #00001000b,     R7          ; set LEDs off and P1.3 pullup
     mov.b   R7,             &P1OUT      ; LED1, LED2 on
-    mov.b    #0x0041,       R8          ; value to xor with R7
+    mov.b   #00000001b,     R8          ; initial value to xor with R7
     EINT                                ; enable interrupts
     bis.w   #CPUOFF,        SR
 PUSH:
-    xor.w   R8,             R7          ; next LED state
-    xor.w   #0x0040,        R8          ; 0x0041 -> 0x0001 -> 0x0041
+    xor.b   R8,             R7          ; next LED state
+    xor.b   #01000000b,     R8          ; 0x0041 -> 0x0001 -> 0x0041
     mov.b   R7,             &P1OUT      ; set LEDs to new state
     bic.b   #00001000b,     &P1IFG      ; interrupt flag P1.3 set to 0
     reti                                ; return from interrupt
@@ -23,4 +23,4 @@ PUSH:
     dw PUSH                             ; interrupt from button goes here
 
     org 0xfffe
-    dw RESET                            ; interrupt from reset button goes here
+    dw RESET                            ; interrupt from reset button goes here
\ No newline at end of file
diff --git a/lab2/prog2.hex b/lab2/prog2.hex
index c7a94c0..c852fd0 100644
--- a/lab2/prog2.hex
+++ b/lab2/prog2.hex
@@ -1,7 +1,7 @@
 :10C0000031400004B240805A2001F240F700220083
-:10C01000F2422700F242250037404900C247210082
-:10C020007840410032D232D0100007E838E04000BA
-:0AC03000C2472100F2C223000013F2
-:02FFE4002AC031
+:10C01000F2422700F24225007742C24721005843EE
+:10C0200032D232D0100047E878E04000C247210009
+:06C03000F2C22300001320
+:02FFE40026C035
 :02FFFE0000C041
 :00000001FF
diff --git a/lab2/prog2_loop.asm b/lab2/prog2_loop.asm
new file mode 100644
index 0000000..3682b37
--- /dev/null
+++ b/lab2/prog2_loop.asm
@@ -0,0 +1,33 @@
+.include "msp430g2553.inc"
+
+    org 0x0C000
+RESET:
+    mov.w   #0x400,         SP
+    mov.w   #WDTPW|WDTHOLD, &WDTCTL
+    mov.b   #11110111b,     &P1DIR      ; all pins outputs except P1.3
+    mov.b   #00001000b,     &P1REN      ; enable resistor pull for P1.3
+    mov.b   #00001000b,     &P1IE       ; P1.3 set as an interrupt
+    mov.b   #00001000b,     R7          ; set LEDs off and P1.3 pullup
+    mov.b   R7,             &P1OUT      ; LED1, LED2 on
+    mov.b   #00000001b,     R8          ; initial value to xor with R7
+    EINT                                ; enable interrupts
+    bis.w   #CPUOFF,        SR
+PUSH:
+    xor.b   R8,             R7          ; next LED state
+    xor.b   #01000000b,     R8          ; 0x0041 -> 0x0001 -> 0x0041
+    mov.b   R7,             &P1OUT      ; set LEDs to new state
+    mov.w   #0xFFFF,        R9          ; decrementing delay in R9
+LOOP:
+    dec     R9
+    nop                                 ; the more nops, the longer the delay
+    nop
+    nop
+    nop
+    jnz     LOOP
+    jmp     PUSH
+
+    org 0xffe4
+    dw PUSH                             ; interrupt from button goes here
+
+    org 0xfffe
+    dw RESET                            ; interrupt from reset button goes here
\ No newline at end of file
diff --git a/lab2/prog2_loop.hex b/lab2/prog2_loop.hex
new file mode 100644
index 0000000..4cdddc5
--- /dev/null
+++ b/lab2/prog2_loop.hex
@@ -0,0 +1,7 @@
+:10C0000031400004B240805A2001F240F700220083
+:10C01000F2422700F24225007742C24721005843EE
+:10C0200032D232D0100047E878E04000C247210009
+:10C03000394319830343034303430343FA23F33F81
+:02FFE40026C035
+:02FFFE0000C041
+:00000001FF