From cab2f8fa41a13d73ed001be31e9ef17187b43a01 Mon Sep 17 00:00:00 2001
From: uvok
Date: Wed, 7 Jan 2026 18:18:34 +0100
Subject: py: Add single-instruction disas

---
 nandgame/assembler/disas_ins.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 nandgame/assembler/disas_ins.py

(limited to 'nandgame/assembler')

diff --git a/nandgame/assembler/disas_ins.py b/nandgame/assembler/disas_ins.py
new file mode 100644
index 0000000..55d6177
--- /dev/null
+++ b/nandgame/assembler/disas_ins.py
@@ -0,0 +1,23 @@
+import sys
+
+from disas import print_decoded
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} [ins]")
+        sys.exit(1)
+
+    ins_hex = sys.argv[1]
+    insb = bytes.fromhex(ins_hex)
+    if (len(insb) != 2):
+        print("Invalid instruction")
+        sys.exit(1)
+    ins = int.from_bytes(insb)
+    raw_ins = f"{insb[0]:02x} {insb[1]:02x}"
+    decoded_ins = print_decoded(ins, False)
+    decoded_ins2 = print_decoded(ins, True)
+    if decoded_ins == decoded_ins2:
+        line = f"\t{raw_ins}\t{decoded_ins}"
+    else:
+        line = f"\t{raw_ins}\t{decoded_ins2:<25}; {decoded_ins}"
+    print(line)
\ No newline at end of file
-- 
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