diff --git a/lab1.1/main.asm b/lab1.1/opd1.2.asm
similarity index 100%
rename from lab1.1/main.asm
rename to lab1.1/opd1.2.asm
diff --git a/lab1.1/opd1.3.asm b/lab1.1/opd1.3.asm
new file mode 100644
index 0000000..000e02e
--- /dev/null
+++ b/lab1.1/opd1.3.asm
@@ -0,0 +1,37 @@
+@ this code produces the same binary as listing 1
+
+  .syntax unified
+  .cpu cortex-m4
+  .thumb
+  .text
+  .global main
+main:
+   MOVS.N  R0, #8
+   LDR.N   R1, =0X40023830
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R0, #0X55
+   LSLS.N  R0, R0, #24
+   LDR.N   R1, =0X40020C00
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R0, #0
+   LDR.N   R1, =0X40020C14
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R3, #15
+   LSLS.N  R3, R3, #12
+
+   MOVS.N  R4, #7
+   LSLS.N  R4, R4, #12
+
+loop:
+   LDR.N   R2, =0X00145854
+delay:
+   SUBS.N  R2, #1
+   BNE.N   delay
+updateLed:
+   EORS.N  R3, R4
+   EORS.N  R0, R3
+   STR.N   R0, [R1, #0]
+   B.N     loop
diff --git a/lab1.1/sideQuest_circleBlicky.asm b/lab1.1/sideQuest_circleBlicky.asm
new file mode 100644
index 0000000..1b8626b
--- /dev/null
+++ b/lab1.1/sideQuest_circleBlicky.asm
@@ -0,0 +1,42 @@
+@ this code produces the same binary as listing 1
+
+  .syntax unified
+  .cpu cortex-m4
+  .thumb
+  .text
+  .global main
+main:
+   MOVS.N  R0, #8
+   LDR.N   R1, =0X40023830
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R0, #0X55
+   LSLS.N  R0, R0, #24
+   LDR.N   R1, =0X40020C00
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R0, #0
+   LDR.N   R1, =0X40020C14
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R4, #0xf
+   LSLS.N  R4, R4, #12
+
+circle:
+   MOVS.N  R3, #1
+   LSLS.N  R3, R3, #12
+
+loop:
+   LDR.N   R2, =0X00145854
+delay:
+   SUBS.N  R2, #1
+   BNE.N   delay
+updateLed:
+   EORS.N  R0, R3
+   STR.N   R0, [R1, #0]
+   BNE.N loop
+
+   LSLS.N  R3, R3, #1
+   ANDS.N  R3, R4
+   BNE.N   loop
+   B.N     circle