diff --git a/extra/assembly/amd/README b/extra/assembly/amd/README
index d9cb00c8d4..198d4abb93 100644
--- a/extra/assembly/amd/README
+++ b/extra/assembly/amd/README
@@ -11,6 +11,8 @@ Test with `PYTHONPATH="." pytest -n12 extra/assembly/amd/`
 
 The code should be as readable and deduplicated as possible. asm and emu shouldn't be required for dsl.
 
+The autogen folder is autogenerated from the AMD PDFs with `python3 -m extra.assembly.amd.pdf --arch all`
+
 test_emu.py has a good set of instruction tests for the emulation, with USE_HW=1 it will compare to real hardware.
 Whenever an instruction is fixed, regression tests should be added here and confirmed with real hardware.