diff --git a/INFO.md b/INFO.md
index 4bee4e5..9abbc17 100644
--- a/INFO.md
+++ b/INFO.md
@@ -76,6 +76,8 @@
 There are some testbenches that you can use to check the scan chain and controller is working.
 The default of 498 projects takes a very long time to simulate, so I advise overriding the configuration first:
 
+    # fetch the test projects
+    ./configure.py --test --update-projects
     # rebuild config with only 20 projects
     ./configure.py --test --update-caravel --limit 20
 
@@ -85,8 +87,17 @@
     # you will also need to set your PDK_ROOT environment variable
     make test_scan_controller
 
-The Gate Level version (requires scan_controller and user_project_wrapper to be re-hardened to get the correct gate level netlists. These files are avaialable in the gl_test branch).
+The Gate Level simulation requires scan_controller and user_project_wrapper to be re-hardened to get the correct gate level netlists: 
 
+* Edit openlane/scan_controller/config.tcl and change NUM_DESIGNS=498 to NUM_DESIGNS=20.
+* Then from the top level directory:
+
+    make scan_controller
+    make user_project_wrapper
+
+* Then run the GL test
+
+    cd verilog/dv/scan_controller
     make test_scan_controller_gl
 
 ### Top level test: internal control
diff --git a/verilog/dv/scan_controller/test_scan_controller.py b/verilog/dv/scan_controller/test_scan_controller.py
index b9d96e1..1a1be2f 100644
--- a/verilog/dv/scan_controller/test_scan_controller.py
+++ b/verilog/dv/scan_controller/test_scan_controller.py
@@ -56,7 +56,7 @@
     dut.inputs.value = 0
 
     # sync to display, GL and RTL have different times to start
-    print("sync to display")
+    print("sync to 7seg at pos 1")
     count = 10
     while count > 0:
         await FallingEdge(dut.slow_clk)
@@ -70,7 +70,7 @@
         assert decode_seg(dut.seven_seg.value) == i
         await FallingEdge(dut.slow_clk)
 
-    print("straight test")
+    print("straight test at pos 0")
     dut.set_clk_div.value = 0   # no clock div
     dut.active_select.value = 0 # straight
     await FallingEdge(dut.ready)
@@ -81,7 +81,7 @@
         if i > 0:
             assert i == int(dut.outputs) + 1
 
-    print("invert test")
+    print("invert test at pos 2")
     dut.active_select.value = 2 # invert
     dut.inputs.value = 0
     await FallingEdge(dut.ready)
@@ -93,9 +93,9 @@
         if i > 0:
             assert 256 - i == int(dut.outputs)
 
-    for design in range(10): # next 10 designs are all straight
+    for design in range(3,20): # next designs are all straight
         print("straight test at pos {}".format(design))
-        dut.active_select.value = 3 + design 
+        dut.active_select.value = design 
         await FallingEdge(dut.ready)
         for i in range(11):
             dut.inputs.value = i
diff --git a/verilog/dv/scan_controller_ext/scan_controller.c b/verilog/dv/scan_controller_ext/scan_controller.c
index 6edea7e..797bcfd 100644
--- a/verilog/dv/scan_controller_ext/scan_controller.c
+++ b/verilog/dv/scan_controller_ext/scan_controller.c
@@ -51,9 +51,12 @@
     outputs                (io_out[36:29]),
     ext_scan_clk       = inputs[0];
     ext_scan_data_in   = inputs[1];
-    ext_scan_data_out  = outputs[0]
+    ext_scan_clk_in    = outputs[0]
+    ext_scan_data_in   = outputs[1]
     ext_scan_select    = inputs[2];   
     ext_scan_latch_en  = inputs[3];
+
+    assign outputs = driver_sel[1] ? aio_output_reg : {6'b0, ext_scan_data_in, ext_scan_clk_in};
     */
 
     reg_mprj_io_21 = GPIO_MODE_USER_STD_INPUT_NOPULL; // clk
@@ -61,7 +64,8 @@
     reg_mprj_io_23 = GPIO_MODE_USER_STD_INPUT_NOPULL; // scan
     reg_mprj_io_24 = GPIO_MODE_USER_STD_INPUT_NOPULL; // latch
 
-    reg_mprj_io_29 = GPIO_MODE_USER_STD_OUTPUT; // data out
+    reg_mprj_io_29 = GPIO_MODE_USER_STD_OUTPUT; // clk  out
+    reg_mprj_io_30 = GPIO_MODE_USER_STD_OUTPUT; // data out
 
     // outputs for testbench control
     reg_mprj_io_12 = GPIO_MODE_MGMT_STD_OUTPUT; // fw ready
diff --git a/verilog/dv/scan_controller_ext/scan_controller.hex b/verilog/dv/scan_controller_ext/scan_controller.hex
index 4dd92e8..d81258e 100755
--- a/verilog/dv/scan_controller_ext/scan_controller.hex
+++ b/verilog/dv/scan_controller_ext/scan_controller.hex
@@ -12,7 +12,7 @@
 03 2F 41 00 83 2F 01 00 13 01 01 04 73 00 20 30 
 17 01 00 F1 13 01 01 75 17 05 00 00 13 05 85 F6 
 73 10 55 30 13 05 00 00 93 05 00 00 17 06 00 00 
-13 06 46 2D 63 0C B5 00 83 26 06 00 23 20 D5 00 
+13 06 C6 2E 63 0C B5 00 83 26 06 00 23 20 D5 00 
 13 05 45 00 13 06 46 00 6F F0 DF FE 13 05 00 00 
 93 05 80 00 63 08 B5 00 23 20 05 00 13 05 45 00 
 6F F0 5F FF 37 15 00 00 13 05 05 88 73 10 45 30 
@@ -51,9 +51,11 @@
 13 07 20 40 23 A0 E7 00 B7 07 00 26 93 87 47 08 
 13 07 20 40 23 A0 E7 00 B7 07 00 26 93 87 87 09 
 37 27 00 00 13 07 87 80 23 A0 E7 00 B7 07 00 26 
-93 87 47 05 37 27 00 00 13 07 97 80 23 A0 E7 00 
-B7 07 00 26 13 07 10 00 23 A0 E7 00 13 00 00 00 
-B7 07 00 26 03 A7 07 00 93 07 10 00 E3 0A F7 FE 
-B7 07 00 26 93 87 C7 00 83 A6 07 00 B7 07 00 26 
-93 87 C7 00 37 17 00 00 33 E7 E6 00 23 A0 E7 00 
-13 00 00 00 03 24 C1 00 13 01 01 01 67 80 00 00 
+93 87 C7 09 37 27 00 00 13 07 87 80 23 A0 E7 00 
+B7 07 00 26 93 87 47 05 37 27 00 00 13 07 97 80 
+23 A0 E7 00 B7 07 00 26 13 07 10 00 23 A0 E7 00 
+13 00 00 00 B7 07 00 26 03 A7 07 00 93 07 10 00 
+E3 0A F7 FE B7 07 00 26 93 87 C7 00 83 A6 07 00 
+B7 07 00 26 93 87 C7 00 37 17 00 00 33 E7 E6 00 
+23 A0 E7 00 13 00 00 00 03 24 C1 00 13 01 01 01 
+67 80 00 00 
diff --git a/verilog/dv/scan_controller_ext/scan_controller_ext.gtkw b/verilog/dv/scan_controller_ext/scan_controller_ext.gtkw
index c4a3411..64a7b90 100644
--- a/verilog/dv/scan_controller_ext/scan_controller_ext.gtkw
+++ b/verilog/dv/scan_controller_ext/scan_controller_ext.gtkw
@@ -1,22 +1,22 @@
 [*]
-[*] GTKWave Analyzer v3.3.103 (w)1999-2019 BSI
-[*] Sun Aug 28 03:59:31 2022
+[*] GTKWave Analyzer v3.4.0 (w)1999-2022 BSI
+[*] Fri Sep  2 12:46:11 2022
 [*]
 [dumpfile] "/home/matt/work/asic-workshop/shuttle7/tinytapeout-mpw7/verilog/dv/scan_controller_ext/scan_controller_tb.vcd"
-[dumpfile_mtime] "Sun Aug 28 03:59:25 2022"
-[dumpfile_size] 357948
+[dumpfile_mtime] "Fri Sep  2 12:44:13 2022"
+[dumpfile_size] 381427
 [savefile] "/home/matt/work/asic-workshop/shuttle7/tinytapeout-mpw7/verilog/dv/scan_controller_ext/scan_controller_ext.gtkw"
-[timestart] 365159000
-[size] 1848 1016
+[timestart] 384490000
+[size] 2235 1105
 [pos] -1 -1
-*-18.000000 366175000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
+*-21.299999 396812500 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
 [treeopen] scan_controller_tb.
 [treeopen] scan_controller_tb.uut.
 [treeopen] scan_controller_tb.uut.mprj.
 [sst_width] 423
-[signals_width] 261
+[signals_width] 475
 [sst_expanded] 1
-[sst_vpaned_height] 254
+[sst_vpaned_height] 280
 @28
 scan_controller_tb.clk
 scan_controller_tb.driver_sel[1:0]
@@ -25,22 +25,23 @@
 @800200
 -scan chain
 @28
-scan_controller_tb.uut.mprj.scan_controller.scan_clk
+scan_controller_tb.uut.mprj.scan_controller.scan_clk_in
+scan_controller_tb.uut.mprj.scan_controller.scan_clk_out
 scan_controller_tb.uut.mprj.scan_controller.scan_data_in
 scan_controller_tb.uut.mprj.scan_controller.scan_data_out
 scan_controller_tb.uut.mprj.scan_controller.scan_latch_en
-scan_controller_tb.uut.mprj.scan_controller.scan_select
 @1000200
 -scan chain
 @800200
 -ext scan chain
-@29
+@1000200
+-ext scan chain
+@28
 scan_controller_tb.ext_clk
+scan_controller_tb.ext_clk_out
 scan_controller_tb.ext_data_in
 scan_controller_tb.ext_data_out
 scan_controller_tb.ext_latch
 scan_controller_tb.ext_scan
-@1000200
--ext scan chain
 [pattern_trace] 1
 [pattern_trace] 0
diff --git a/verilog/dv/scan_controller_ext/scan_controller_tb.v b/verilog/dv/scan_controller_ext/scan_controller_tb.v
index 9b02c87..13f5270 100644
--- a/verilog/dv/scan_controller_ext/scan_controller_tb.v
+++ b/verilog/dv/scan_controller_ext/scan_controller_tb.v
@@ -37,7 +37,8 @@
     ///// convenience signals that match what the cocotb test modules are looking for
     // change to suit your project. Here's how we can make some nicer named signals for inputs & outputs
     wire fw_ready = mprj_io[12];
-    wire ext_data_out = mprj_io[29];
+    wire ext_clk_out = mprj_io[29];
+    wire ext_data_out = mprj_io[30];
 
     wire [1:0] driver_sel;
     wire ext_clk, ext_latch, ext_scan, ext_data_in;
diff --git a/verilog/dv/scan_controller_ext/test_scan_controller.py b/verilog/dv/scan_controller_ext/test_scan_controller.py
index 40af416..ef469be 100644
--- a/verilog/dv/scan_controller_ext/test_scan_controller.py
+++ b/verilog/dv/scan_controller_ext/test_scan_controller.py
@@ -58,14 +58,13 @@
     dut.ext_scan.value = 0
 
     # drive the data out
-    for i in range(8):
+    for i in range(8*20):
         dut.ext_clk.value = 1
         await ClockCycles(dut.clk, 1)
         dut.ext_clk.value = 0
         await ClockCycles(dut.clk, 1)
-        print(dut.ext_data_out.value)
-        if i < 4:
+        if i in [152, 153, 154, 155]:
             assert(dut.ext_data_out.value == 1)
-        else:
+        elif i in [156, 157, 158, 159]:
             assert(dut.ext_data_out.value == 0)
 
diff --git a/verilog/dv/scan_controller_la/scan_controller.c b/verilog/dv/scan_controller_la/scan_controller.c
index 1547b92..633db68 100644
--- a/verilog/dv/scan_controller_la/scan_controller.c
+++ b/verilog/dv/scan_controller_la/scan_controller.c
@@ -32,6 +32,7 @@
 #define FW_READY    12
 #define FW_DONE     13
 #define DATA_RX     14
+#define TB_CLK      15
 
 void main()
 {
@@ -59,11 +60,14 @@
     reg_mprj_io_12 = GPIO_MODE_MGMT_STD_OUTPUT; // fw ready
     reg_mprj_io_13 = GPIO_MODE_MGMT_STD_OUTPUT; // fw done
     reg_mprj_io_14 = GPIO_MODE_MGMT_STD_OUTPUT; // data rx
+    reg_mprj_io_15 = GPIO_MODE_MGMT_STD_OUTPUT; // tb clk
 
     /* Apply configuration */
     reg_mprj_xfer = 1;
     while (reg_mprj_xfer == 1);
 
+    CLR(reg_mprj_datal, DATA_RX);
+
     reg_la0_iena = 0x0; // input enable on
     reg_la0_oenb = 0xFFFFFFFF; // enable all of bank0 logic analyser outputs (ignore the name, 1 is on, 0 off)
 
@@ -87,15 +91,22 @@
     // clock the data out of the modules into the chain
     SET(reg_la0_data, SCAN);
     SET(reg_la0_data, CLK);
-    CLR(reg_la0_data, CLK);
     CLR(reg_la0_data, SCAN);
+
     // wait for some data to arrive
-    for(i = 0; i < 8; i ++)
+    for(i = 0; i < 8*20; i ++)
     {
         SET(reg_la0_data, CLK);
         CLR(reg_la0_data, CLK);
-        if(GET(reg_la0_data_in, DATA_IN))
-            reg_mprj_datal |= 1 << DATA_RX;
+
+        if(GET(reg_la0_data_in, DATA_IN)) // returns 1 even if we see x in the trace
+            SET(reg_mprj_datal, DATA_RX);
+        else
+            CLR(reg_mprj_datal, DATA_RX);
+
+        // sync to tb
+        SET(reg_mprj_datal, TB_CLK);
+        CLR(reg_mprj_datal, TB_CLK);
     }
 
 	reg_mprj_datal |= 1 << FW_DONE;
diff --git a/verilog/dv/scan_controller_la/scan_controller.hex b/verilog/dv/scan_controller_la/scan_controller.hex
index eada8bf..050e302 100755
--- a/verilog/dv/scan_controller_la/scan_controller.hex
+++ b/verilog/dv/scan_controller_la/scan_controller.hex
@@ -12,7 +12,7 @@
 03 2F 41 00 83 2F 01 00 13 01 01 04 73 00 20 30 
 17 01 00 F1 13 01 01 75 17 05 00 00 13 05 85 F6 
 73 10 55 30 13 05 00 00 93 05 00 00 17 06 00 00 
-13 06 46 4D 63 0C B5 00 83 26 06 00 23 20 D5 00 
+13 06 C6 55 63 0C B5 00 83 26 06 00 23 20 D5 00 
 13 05 45 00 13 06 46 00 6F F0 DF FE 13 05 00 00 
 93 05 80 00 63 08 B5 00 23 20 05 00 13 05 45 00 
 6F F0 5F FF 37 15 00 00 13 05 05 88 73 10 45 30 
@@ -49,43 +49,52 @@
 37 27 00 00 13 07 97 80 23 A0 E7 00 B7 07 00 26 
 93 87 87 05 37 27 00 00 13 07 97 80 23 A0 E7 00 
 B7 07 00 26 93 87 C7 05 37 27 00 00 13 07 97 80 
-23 A0 E7 00 B7 07 00 26 13 07 10 00 23 A0 E7 00 
-13 00 00 00 B7 07 00 26 03 A7 07 00 93 07 10 00 
-E3 0A F7 FE B7 37 00 F0 93 87 C7 00 23 A0 07 00 
-B7 37 00 F0 93 87 C7 01 13 07 F0 FF 23 A0 E7 00 
-B7 07 00 26 93 87 C7 00 83 A6 07 00 B7 07 00 26 
-93 87 C7 00 37 17 00 00 33 E7 E6 00 23 A0 E7 00 
-B7 37 00 F0 93 87 C7 03 03 A7 07 00 B7 37 00 F0 
-93 87 C7 03 13 67 27 00 23 A0 E7 00 B7 37 00 F0 
-93 87 C7 03 03 A7 07 00 B7 37 00 F0 93 87 C7 03 
-13 77 B7 FF 23 A0 E7 00 23 26 04 FE 6F 00 00 07 
-B7 37 00 F0 93 87 C7 03 03 A7 07 00 B7 37 00 F0 
-93 87 C7 03 13 67 17 00 23 A0 E7 00 B7 37 00 F0 
-93 87 C7 03 03 A7 07 00 B7 37 00 F0 93 87 C7 03 
-13 77 E7 FF 23 A0 E7 00 03 27 C4 FE 93 07 30 00 
-63 10 F7 02 B7 37 00 F0 93 87 C7 03 03 A7 07 00 
-B7 37 00 F0 93 87 C7 03 13 77 D7 FF 23 A0 E7 00 
-83 27 C4 FE 93 87 17 00 23 26 F4 FE 03 27 C4 FE 
-93 07 70 00 E3 D6 E7 F8 B7 37 00 F0 93 87 C7 03 
-03 A7 07 00 B7 37 00 F0 93 87 C7 03 13 67 87 00 
-23 A0 E7 00 B7 37 00 F0 93 87 C7 03 03 A7 07 00 
-B7 37 00 F0 93 87 C7 03 13 77 77 FF 23 A0 E7 00 
-B7 37 00 F0 93 87 C7 03 03 A7 07 00 B7 37 00 F0 
-93 87 C7 03 13 67 47 00 23 A0 E7 00 B7 37 00 F0 
-93 87 C7 03 03 A7 07 00 B7 37 00 F0 93 87 C7 03 
-13 67 17 00 23 A0 E7 00 B7 37 00 F0 93 87 C7 03 
-03 A7 07 00 B7 37 00 F0 93 87 C7 03 13 77 E7 FF 
+23 A0 E7 00 B7 07 00 26 93 87 07 06 37 27 00 00 
+13 07 97 80 23 A0 E7 00 B7 07 00 26 13 07 10 00 
+23 A0 E7 00 13 00 00 00 B7 07 00 26 03 A7 07 00 
+93 07 10 00 E3 0A F7 FE B7 07 00 26 93 87 C7 00 
+83 A6 07 00 B7 07 00 26 93 87 C7 00 37 C7 FF FF 
+13 07 F7 FF 33 F7 E6 00 23 A0 E7 00 B7 37 00 F0 
+93 87 C7 00 23 A0 07 00 B7 37 00 F0 93 87 C7 01 
+13 07 F0 FF 23 A0 E7 00 B7 07 00 26 93 87 C7 00 
+83 A6 07 00 B7 07 00 26 93 87 C7 00 37 17 00 00 
+33 E7 E6 00 23 A0 E7 00 B7 37 00 F0 93 87 C7 03 
+03 A7 07 00 B7 37 00 F0 93 87 C7 03 13 67 27 00 
 23 A0 E7 00 B7 37 00 F0 93 87 C7 03 03 A7 07 00 
 B7 37 00 F0 93 87 C7 03 13 77 B7 FF 23 A0 E7 00 
-23 26 04 FE 6F 00 C0 07 B7 37 00 F0 93 87 C7 03 
+23 26 04 FE 6F 00 00 07 B7 37 00 F0 93 87 C7 03 
 03 A7 07 00 B7 37 00 F0 93 87 C7 03 13 67 17 00 
 23 A0 E7 00 B7 37 00 F0 93 87 C7 03 03 A7 07 00 
 B7 37 00 F0 93 87 C7 03 13 77 E7 FF 23 A0 E7 00 
-B7 37 00 F0 93 87 C7 02 83 A7 07 00 93 F7 17 00 
-63 82 07 02 B7 07 00 26 93 87 C7 00 83 A6 07 00 
-B7 07 00 26 93 87 C7 00 37 47 00 00 33 E7 E6 00 
-23 A0 E7 00 83 27 C4 FE 93 87 17 00 23 26 F4 FE 
-03 27 C4 FE 93 07 70 00 E3 D0 E7 F8 B7 07 00 26 
-93 87 C7 00 83 A6 07 00 B7 07 00 26 93 87 C7 00 
-37 27 00 00 33 E7 E6 00 23 A0 E7 00 13 00 00 00 
-03 24 C1 01 13 01 01 02 67 80 00 00 
+03 27 C4 FE 93 07 30 00 63 10 F7 02 B7 37 00 F0 
+93 87 C7 03 03 A7 07 00 B7 37 00 F0 93 87 C7 03 
+13 77 D7 FF 23 A0 E7 00 83 27 C4 FE 93 87 17 00 
+23 26 F4 FE 03 27 C4 FE 93 07 70 00 E3 D6 E7 F8 
+B7 37 00 F0 93 87 C7 03 03 A7 07 00 B7 37 00 F0 
+93 87 C7 03 13 67 87 00 23 A0 E7 00 B7 37 00 F0 
+93 87 C7 03 03 A7 07 00 B7 37 00 F0 93 87 C7 03 
+13 77 77 FF 23 A0 E7 00 B7 37 00 F0 93 87 C7 03 
+03 A7 07 00 B7 37 00 F0 93 87 C7 03 13 67 47 00 
+23 A0 E7 00 B7 37 00 F0 93 87 C7 03 03 A7 07 00 
+B7 37 00 F0 93 87 C7 03 13 67 17 00 23 A0 E7 00 
+B7 37 00 F0 93 87 C7 03 03 A7 07 00 B7 37 00 F0 
+93 87 C7 03 13 77 B7 FF 23 A0 E7 00 23 26 04 FE 
+6F 00 80 0E B7 37 00 F0 93 87 C7 03 03 A7 07 00 
+B7 37 00 F0 93 87 C7 03 13 67 17 00 23 A0 E7 00 
+B7 37 00 F0 93 87 C7 03 03 A7 07 00 B7 37 00 F0 
+93 87 C7 03 13 77 E7 FF 23 A0 E7 00 B7 37 00 F0 
+93 87 C7 02 83 A7 07 00 93 F7 17 00 63 84 07 02 
+B7 07 00 26 93 87 C7 00 83 A6 07 00 B7 07 00 26 
+93 87 C7 00 37 47 00 00 33 E7 E6 00 23 A0 E7 00 
+6F 00 80 02 B7 07 00 26 93 87 C7 00 83 A6 07 00 
+B7 07 00 26 93 87 C7 00 37 C7 FF FF 13 07 F7 FF 
+33 F7 E6 00 23 A0 E7 00 B7 07 00 26 93 87 C7 00 
+83 A6 07 00 B7 07 00 26 93 87 C7 00 37 87 00 00 
+33 E7 E6 00 23 A0 E7 00 B7 07 00 26 93 87 C7 00 
+83 A6 07 00 B7 07 00 26 93 87 C7 00 37 87 FF FF 
+13 07 F7 FF 33 F7 E6 00 23 A0 E7 00 83 27 C4 FE 
+93 87 17 00 23 26 F4 FE 03 27 C4 FE 93 07 F0 09 
+E3 DA E7 F0 B7 07 00 26 93 87 C7 00 83 A6 07 00 
+B7 07 00 26 93 87 C7 00 37 27 00 00 33 E7 E6 00 
+23 A0 E7 00 13 00 00 00 03 24 C1 01 13 01 01 02 
+67 80 00 00 
diff --git a/verilog/dv/scan_controller_la/scan_controller_la.gtkw b/verilog/dv/scan_controller_la/scan_controller_la.gtkw
index cf6ba1a..f22c0bc 100644
--- a/verilog/dv/scan_controller_la/scan_controller_la.gtkw
+++ b/verilog/dv/scan_controller_la/scan_controller_la.gtkw
@@ -1,22 +1,22 @@
 [*]
-[*] GTKWave Analyzer v3.3.103 (w)1999-2019 BSI
-[*] Sun Aug 28 03:36:21 2022
+[*] GTKWave Analyzer v3.4.0 (w)1999-2022 BSI
+[*] Fri Sep  2 13:07:34 2022
 [*]
 [dumpfile] "/home/matt/work/asic-workshop/shuttle7/tinytapeout-mpw7/verilog/dv/scan_controller_la/scan_controller_tb.vcd"
-[dumpfile_mtime] "Sun Aug 28 03:33:58 2022"
-[dumpfile_size] 1544765
+[dumpfile_mtime] "Fri Sep  2 13:04:53 2022"
+[dumpfile_size] 5702199
 [savefile] "/home/matt/work/asic-workshop/shuttle7/tinytapeout-mpw7/verilog/dv/scan_controller_la/scan_controller_la.gtkw"
 [timestart] 0
-[size] 1795 917
+[size] 2149 1120
 [pos] -1 -1
-*-29.000000 1829000000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
+*-32.000000 3039550000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
 [treeopen] scan_controller_tb.
 [treeopen] scan_controller_tb.uut.
 [treeopen] scan_controller_tb.uut.mprj.
 [sst_width] 423
-[signals_width] 261
+[signals_width] 463
 [sst_expanded] 1
-[sst_vpaned_height] 254
+[sst_vpaned_height] 323
 @28
 scan_controller_tb.clk
 scan_controller_tb.driver_sel[1:0]
@@ -27,8 +27,8 @@
 @800200
 -la scan chain
 @28
-scan_controller_tb.uut.mprj.scan_controller.la_scan_clk
 scan_controller_tb.uut.mprj.scan_controller.la_scan_data_in
+scan_controller_tb.uut.mprj.scan_controller.la_scan_clk_in
 scan_controller_tb.uut.mprj.scan_controller.la_scan_data_out
 scan_controller_tb.uut.mprj.scan_controller.la_scan_latch_en
 scan_controller_tb.uut.mprj.scan_controller.la_scan_select
@@ -36,8 +36,9 @@
 -la scan chain
 @800200
 -scan chain
-@28
-scan_controller_tb.uut.mprj.scan_controller.scan_clk
+@29
+scan_controller_tb.uut.mprj.scan_controller.scan_clk_in
+scan_controller_tb.uut.mprj.scan_controller.scan_clk_out
 scan_controller_tb.uut.mprj.scan_controller.scan_data_in
 scan_controller_tb.uut.mprj.scan_controller.scan_data_out
 scan_controller_tb.uut.mprj.scan_controller.scan_latch_en
diff --git a/verilog/dv/scan_controller_la/scan_controller_tb.v b/verilog/dv/scan_controller_la/scan_controller_tb.v
index 72b5efa..4e9c4f5 100644
--- a/verilog/dv/scan_controller_la/scan_controller_tb.v
+++ b/verilog/dv/scan_controller_la/scan_controller_tb.v
@@ -39,6 +39,7 @@
     wire fw_ready = mprj_io[12];
     wire fw_done = mprj_io[13];
     wire data_rx = mprj_io[14];
+    wire tb_clk = mprj_io[15];
 
     wire [1:0] driver_sel;
     assign mprj_io[9:8] = driver_sel;
diff --git a/verilog/dv/scan_controller_la/test_scan_controller.py b/verilog/dv/scan_controller_la/test_scan_controller.py
index 6eadd7e..261b53a 100644
--- a/verilog/dv/scan_controller_la/test_scan_controller.py
+++ b/verilog/dv/scan_controller_la/test_scan_controller.py
@@ -27,14 +27,27 @@
     dut.RSTB.value = 1
 
     # wait with a timeout for the project to become active
-    await with_timeout(RisingEdge(dut.fw_ready), 350, 'us')
+    await with_timeout(RisingEdge(dut.fw_ready), 550, 'us')
     print("firmware ready")
 
-    # wait
-    await with_timeout(RisingEdge(dut.fw_done), 2800, 'us')
+    print("waiting for LA to clock the scan chain - warning this will take about 15 minutes")
+    # wait a long time
+    step = 0
+    NUM_IOS=8
+    NUM_DESIGNS=20
+    START_TEST=(NUM_DESIGNS-1)*NUM_IOS
 
-    assert(dut.fw_done == 1)
-    assert(dut.data_rx == 1)
+    for i in range(NUM_IOS*NUM_DESIGNS):
+        await with_timeout(FallingEdge(dut.tb_clk), 2, 'ms')
+        print("step {} of {} received data {}".format(step, NUM_IOS*NUM_DESIGNS, dut.data_rx.value))
+        step += 1
+        if i in [START_TEST, START_TEST+1, START_TEST+2, START_TEST+3]:
+            assert dut.data_rx.value == 1
+        elif i in [START_TEST+4, START_TEST+5, START_TEST+6, START_TEST+7]:
+            assert dut.data_rx.value == 0
+            
+    await with_timeout(RisingEdge(dut.fw_done), 500, 'us')
+    assert(dut.fw_done.value == 1)
 
     await ClockCycles(dut.clk, 100)