back.verilog: pass -norom to -proc if available.

Fixes #746.
2023-02-28 13:34:14 +00:00 · 2023-02-28 13:34:14 +00:00 · 0b7adcbd10
parent 7ea2e175e4
commit 0b7adcbd10
1 changed files with 4 additions and 1 deletions
--- a/amaranth/back/verilog.py
+++ b/amaranth/back/verilog.py
@ -15,7 +15,10 @@ def _convert_rtlil_text(rtlil_text, *, strip_internal_attrs=False, write_verilog

    script = []
    script.append("read_ilang <<rtlil\n{}\nrtlil".format(rtlil_text))
-    script.append("proc -nomux")
+    if yosys_version >= (0, 17):
+        script.append("proc -nomux -norom")
+    else:
+        script.append("proc -nomux")
    script.append("memory_collect")

    if strip_internal_attrs: