1 files changed, 30 insertions, 0 deletions
diff --git a/eater_cpu/cpp/disas.h b/eater_cpu/cpp/disas.h
new file mode 100644
index 0000000..9685e15
--- /dev/null
+++ b/eater_cpu/cpp/disas.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <cstdint>
+#include <format>
+#include <string>
+
+static std::string disas(uint8_t ins) {
+  switch (ins >> 4) {
+  case 0:
+    return "nop";
+  case 1:
+    return std::format("lda {}", ins & 0x0f);
+  case 2:
+    return std::format("add {}", ins & 0x0f);
+  case 3:
+    return std::format("sub {}", ins & 0x0f);
+  case 4:
+    return std::format("sta {}", ins & 0x0f);
+  case 5:
+    return std::format("ldi {}", ins & 0x0f);
+  case 6:
+    return std::format("jmp");
+  case 14:
+    return std::format("out");
+  case 15:
+    return std::format("halt");
+  default:
+    return "???";
+  }
+}