2 files changed, 72 insertions, 0 deletions
diff --git a/testsuite/synth/bug04/io_pin.vhdl b/testsuite/synth/bug04/io_pin.vhdl
new file mode 100644
index 000000000..00185d21f
--- /dev/null
+++ b/testsuite/synth/bug04/io_pin.vhdl
@@ -0,0 +1,65 @@
+
+library ieee ;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity bidir_io is
+    generic (
+    EN_PULLDN   : boolean := false; 
+    EN_PULLUP   : boolean := false);    
+    port (
+    io_pin    : inout std_logic; 
+    d_in      : out   std_logic;
+    d_out     : in    std_logic;
+    out_en    : in    std_logic);
+end bidir_io;
+
+architecture ice40 of bidir_io is
+
+    signal use_pullup : std_logic;
+
+    component SB_IO
+    generic(
+        PIN_TYPE    : std_logic_vector;
+        PULLUP      : std_logic;
+        NEG_TRIGGER : std_logic);
+    port(
+        PACKAGE_PIN       : inout std_logic;
+        LATCH_INPUT_VALUE : in  std_logic;
+        CLOCK_ENABLE      : in  std_logic;
+        INPUT_CLK         : in  std_logic;
+        OUTPUT_CLK        : in  std_logic;
+        OUTPUT_ENABLE     : in  std_logic;
+        D_OUT_0           : in std_logic;
+        D_OUT_1           : in std_logic;
+        D_IN_0            : out std_logic;
+        D_IN_1            : out std_logic);
+end component;
+
+begin
+
+
+gen_pd : if EN_PULLDN generate
+    assert false report "not implemented" severity error;
+end generate;
+
+use_pullup <= '1' when EN_PULLUP else '0';
+
+u_iobuf : SB_IO
+    generic map(
+        PIN_TYPE => b"101001",
+        PULLUP => use_pullup,
+        NEG_TRIGGER => '0')
+    port map(
+        PACKAGE_PIN => io_pin,
+        LATCH_INPUT_VALUE => '0',
+        CLOCK_ENABLE => '0',
+        INPUT_CLK => '0',
+        OUTPUT_CLK => '0',
+        OUTPUT_ENABLE => out_en,
+        D_OUT_0 => d_out,
+        D_OUT_1 => '0',
+        D_IN_0 => d_in,
+        D_IN_1 => open);
+
+end ice40;
diff --git a/testsuite/synth/bug04/testsuite.sh b/testsuite/synth/bug04/testsuite.sh
new file mode 100755
index 000000000..9f2426deb
--- /dev/null
+++ b/testsuite/synth/bug04/testsuite.sh
@@ -0,0 +1,7 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+synth_failure io_pin.vhdl -e
+
+echo "Test successful"