diff --git a/ivtest/ivltests/br_gh1099.v b/ivtest/ivltests/br_gh1099a.v
similarity index 100%
rename from ivtest/ivltests/br_gh1099.v
rename to ivtest/ivltests/br_gh1099a.v
diff --git a/ivtest/ivltests/br_gh1099b.v b/ivtest/ivltests/br_gh1099b.v
new file mode 100644
index 000000000..e67d89a68
--- /dev/null
+++ b/ivtest/ivltests/br_gh1099b.v
@@ -0,0 +1,24 @@
+module top;
+    reg [3:0] inp1;
+    reg signed [3:0] inp2;
+    wire [4:0] out1, out2;
+    initial begin
+        $monitor("%b %b %b %b", inp1, inp2, out1, out2);
+        #1 inp1 = 4'b1111;
+        #1 inp2 = 4'b1111;
+        #1;
+        if ((out1 === 5'b01111) && (out2 === 5'b01111))
+            $display("PASSED");
+        else
+            $display("FAILED");
+    end
+    mod m1(inp1[3:0], out1);
+    mod m2(inp2[3:0], out2);
+endmodule
+
+module mod(
+    input [4:0] inp,
+    output [4:0] out
+);
+    assign out = inp;
+endmodule
diff --git a/ivtest/ivltests/br_gh1099c.v b/ivtest/ivltests/br_gh1099c.v
new file mode 100644
index 000000000..12c77bf4f
--- /dev/null
+++ b/ivtest/ivltests/br_gh1099c.v
@@ -0,0 +1,24 @@
+module top;
+    reg [3:0] inp1;
+    reg signed [3:0] inp2;
+    wire [4:0] out1, out2;
+    initial begin
+        $monitor("%b %b %b %b", inp1, inp2, out1, out2);
+        #1 inp1 = 4'b1111;
+        #1 inp2 = 4'b1111;
+        #1;
+        if ((out1 === 5'b01111) && (out2 === 5'b01111))
+            $display("PASSED");
+        else
+            $display("FAILED");
+    end
+    mod m1($unsigned(inp1), out1);
+    mod m2($unsigned(inp2), out2);
+endmodule
+
+module mod(
+    input [4:0] inp,
+    output [4:0] out
+);
+    assign out = inp;
+endmodule
diff --git a/ivtest/regress-vvp.list b/ivtest/regress-vvp.list
index 1d8a066cc..79662c919 100644
--- a/ivtest/regress-vvp.list
+++ b/ivtest/regress-vvp.list
@@ -42,7 +42,9 @@ br_gh1087a2			vvp_tests/br_gh1087a2.json
 br_gh1087a3			vvp_tests/br_gh1087a3.json
 br_gh1087b			vvp_tests/br_gh1087b.json
 br_gh1087c			vvp_tests/br_gh1087c.json
-br_gh1099			vvp_tests/br_gh1099.json
+br_gh1099a			vvp_tests/br_gh1099a.json
+br_gh1099b			vvp_tests/br_gh1099b.json
+br_gh1099c			vvp_tests/br_gh1099c.json
 br_gh1104			vvp_tests/br_gh1104.json
 ca_time_real`			vvp_tests/ca_time_real.json
 case1				vvp_tests/case1.json
diff --git a/ivtest/vvp_tests/br_gh1099.json b/ivtest/vvp_tests/br_gh1099.json
deleted file mode 100644
index 5f4d411e8..000000000
--- a/ivtest/vvp_tests/br_gh1099.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-    "type"   : "normal",
-    "source" : "br_gh1099.v"
-}
diff --git a/ivtest/vvp_tests/br_gh1099a.json b/ivtest/vvp_tests/br_gh1099a.json
new file mode 100644
index 000000000..7a01ac8ba
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1099a.json
@@ -0,0 +1,4 @@
+{
+    "type"   : "normal",
+    "source" : "br_gh1099a.v"
+}
diff --git a/ivtest/vvp_tests/br_gh1099b.json b/ivtest/vvp_tests/br_gh1099b.json
new file mode 100644
index 000000000..045eda3a7
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1099b.json
@@ -0,0 +1,4 @@
+{
+    "type"   : "normal",
+    "source" : "br_gh1099b.v"
+}
diff --git a/ivtest/vvp_tests/br_gh1099c.json b/ivtest/vvp_tests/br_gh1099c.json
new file mode 100644
index 000000000..945344a0e
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1099c.json
@@ -0,0 +1,4 @@
+{
+    "type"   : "normal",
+    "source" : "br_gh1099c.v"
+}