2 files changed, 50 insertions, 0 deletions
diff --git a/test/e2e/sum/sum.atk16 b/test/e2e/sum/sum.atk16
new file mode 100644
index 0000000..8399767
--- /dev/null
+++ b/test/e2e/sum/sum.atk16
@@ -0,0 +1,31 @@
+; Program: sum two values and store the result in RAM
+
+; ROM (and program execution) starts at offset 0x0
+@address 0x0
+  jpi program
+
+@label ram_offset
+  0x8000                  ; store ram offset for later memory access
+
+@label program
+  ldi 10 RA               ; RA := 10
+  ldi 20 RB               ; RB := 20
+  alr al_plus RA RB RC    ; RC := RA + RB
+  ldi ram_offset RD       ; store address of ram_offset in RD
+  ldr RD RD               ; dereference ram_offset address
+@label debug
+  str RC RD               ; store RC in RAM
+
+                          ; Check that 10 + 20 = 30
+  ali al_plus RC 0 RA     ; RA := result of sum
+  ldi 30 RB               ; RB := 30
+  alr al_minus RA RB RC   ; RC := RA - RB
+  bri zero success        ; if result is zero, jump to success
+
+  ldi 2 RA                ; RA := 2 to signal failure
+  hlt
+
+                          ; Else
+@label success
+  ldi 1 RA                ; RA := 1 to signal success
+  hlt
diff --git a/test/e2e/sum/test_sum.py b/test/e2e/sum/test_sum.py
new file mode 100644
index 0000000..3484af5
--- /dev/null
+++ b/test/e2e/sum/test_sum.py
@@ -0,0 +1,19 @@
+from atk16_asm import assemble
+from atk16_emu import Machine
+from test.utils import pad_bytearray
+
+def test_sum():
+  filename = "test/e2e/sum/sum.atk16"
+  with open(filename, "r") as f:
+    source = f.read()
+
+  obj = assemble(source, filename)
+  rom_image = pad_bytearray(obj)
+
+  machine = Machine()
+  machine.load_rom_image(rom_image)
+  machine.reset()
+  machine.run_until_halted()
+  machine.print_state_summary()
+
+  assert machine.rb.value == 30