diff --git a/projects/mips_sys/ghdl/tb_mips_sys.gtkw b/projects/mips_sys/ghdl/tb_mips_sys.gtkw
index e69de29..51b0dd1 100644
--- a/projects/mips_sys/ghdl/tb_mips_sys.gtkw
+++ b/projects/mips_sys/ghdl/tb_mips_sys.gtkw
@@ -0,0 +1,35 @@
+[*]
+[*] GTKWave Analyzer v3.3.104 (w)1999-2020 BSI
+[*] Sun Mar 28 11:45:54 2021
+[*]
+[dumpfile] "/home/jens/work/vhdl/trunk/projects/mips_sys/ghdl/build/tb_mips_sys/tb_mips_sys.vcd"
+[dumpfile_mtime] "Sun Mar 28 11:42:43 2021"
+[dumpfile_size] 735059968
+[savefile] "/home/jens/work/vhdl/trunk/projects/mips_sys/ghdl/build/tb_mips_sys/tb_mips_sys.gtkw"
+[timestart] 0
+[size] 1856 1136
+[pos] -1 -1
+*-36.688969 147300000000 -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] tb_mips_sys.
+[sst_width] 233
+[signals_width] 242
+[sst_expanded] 1
+[sst_vpaned_height] 331
+@22
+tb_mips_sys.sys_lcd_d[3:0]
+@28
+tb_mips_sys.sys_phy_gtx_clk
+@22
+tb_mips_sys.sys_sdr_a_q[12:0]
+tb_mips_sys.sys_usb_d[15:0]
+tb_mips_sys.sys_flash_ssram_d[31:0]
+tb_mips_sys.btn[4:0]
+tb_mips_sys.dip[7:0]
+tb_mips_sys.sys_phy_rx[7:0]
+tb_mips_sys.sys_phy_tx[7:0]
+@28
+tb_mips_sys.sys_ac97_sdata_in
+@29
+tb_mips_sys.sys_ac97_sdata_out
+[pattern_trace] 1
+[pattern_trace] 0
diff --git a/projects/mips_sys/ghdl/tb_mips_sys.make b/projects/mips_sys/ghdl/tb_mips_sys.make
index b56653c..0005dc5 100644
--- a/projects/mips_sys/ghdl/tb_mips_sys.make
+++ b/projects/mips_sys/ghdl/tb_mips_sys.make
@@ -98,7 +98,7 @@ SRCS += ../src/tb_mips_sys.vhd
 TARGET := tb_mips_sys
 ENTITY = tb_mips_sys
 RUN_TIME := 10ms
-WITH_VCD := y
+WITH_FST := y
 
 GHDL_OPTS := -P$(ROOT_PATH)/Common/sim/build/unisim/unisim -fsynopsys -fexplicit