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-rw-r--r--passes/memory/memory_bram.cc7
1 files changed, 5 insertions, 2 deletions
diff --git a/passes/memory/memory_bram.cc b/passes/memory/memory_bram.cc
index 3e83a6d9b..b371578d4 100644
--- a/passes/memory/memory_bram.cc
+++ b/passes/memory/memory_bram.cc
@@ -859,8 +859,11 @@ grow_read_ports:;
if (pi.enable)
{
SigSpec sig_en = pi.sig_en;
- sig_en.extend_u0((grid_d+1) * pi.enable);
- sig_en = sig_en.extract(grid_d * pi.enable, pi.enable);
+
+ if (pi.wrmode == 1) {
+ sig_en.extend_u0((grid_d+1) * pi.enable);
+ sig_en = sig_en.extract(grid_d * pi.enable, pi.enable);
+ }
if (!addr_ok.empty())
sig_en = module->Mux(NEW_ID, SigSpec(0, GetSize(sig_en)), sig_en, addr_ok);