diff --git a/17/input3.txt b/17/input3.txt
new file mode 100644
index 0000000..cbd9ed7
--- /dev/null
+++ b/17/input3.txt
@@ -0,0 +1,5 @@
+Register A: 59397658
+Register B: 0
+Register C: 0
+
+Program: 2,4,1,1,7,5,4,6,1,4,0,3,5,5,3,0
diff --git a/17/input3_assembly.txt b/17/input3_assembly.txt
new file mode 100644
index 0000000..9ed019b
--- /dev/null
+++ b/17/input3_assembly.txt
@@ -0,0 +1,10 @@
+2,4,1,1,7,5,4,6,1,4,0,3,5,5,3,0
+
+2,4 bst A  B = A & 7
+1,1 bxl 1  B = B ^ 1 = A&7^1
+7,5 cdv B  C = A >> B = A>>(A&7^1)
+4,6 bxc -  B = B ^ C = A&7^1 ^ (A>>(A&7^1))
+1,4 bxl 4  B = B ^ 4 = A&7^1 ^ (A>>(A&7^1)) ^ 4 = A&7^5 ^ (A>>(A&7^1))
+0,3 adv 3  A = A >> 3
+5,5 out B  output A&7^5 ^ (A>>(A&7^2)) & 7
+3,0 jnz 0  if A != 0 goto 0
diff --git a/17/main_test.go b/17/main_test.go
index 3657c31..444e165 100644
--- a/17/main_test.go
+++ b/17/main_test.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"math"
 	"testing"
 
 	// "github.com/zeebo/assert"
@@ -31,3 +32,14 @@ func TestCPU(t *testing.T) {
 	reg, _ = run([]int{4, 0}, [3]int{0, 2024, 43690})
 	assert.Equal(t, 44354, reg[1])
 }
+
+var testProgram = []int{2, 4, 1, 1, 7, 5, 0, 3, 1, 4, 4, 5, 5, 5, 3, 0}
+
+func TestOutput(t *testing.T) {
+	for i := 1; i < math.MaxInt64; i = i<<1 + 1 {
+		_, output := run(testProgram, [3]int{i, 0, 0})
+		t.Logf("%d: %v\n", i, output)
+		_, output = run(testProgram, [3]int{i + 1, 0, 0})
+		t.Logf("%d: %v\n", i+1, output)
+	}
+}
diff --git a/17/task.txt b/17/task.txt
index c99e2f3..3ad4f93 100644
--- a/17/task.txt
+++ b/17/task.txt
@@ -1,3 +1,5 @@
+https://adventofcode.com/2024/day/17
+
 --- Day 17: Chronospatial Computer ---
 The Historians push the button on their strange device, but this time, you all just feel like you're falling.