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-rw-r--r--techlibs/common/simlib.v2
1 files changed, 1 insertions, 1 deletions
diff --git a/techlibs/common/simlib.v b/techlibs/common/simlib.v
index 0ad8d14b..2d8088ad 100644
--- a/techlibs/common/simlib.v
+++ b/techlibs/common/simlib.v
@@ -820,7 +820,7 @@ function integer my_clog2;
end
endfunction
-localparam integer num_bits = CONFIG[3:0];
+localparam integer num_bits = CONFIG[3:0] > 0 ? CONFIG[3:0] : 1;
localparam integer num_ports = (CONFIG_WIDTH-4) / (2 + 2*num_bits);
localparam integer num_abits = my_clog2(A_WIDTH) > 0 ? my_clog2(A_WIDTH) : 1;