Use synthesis translate_off/on to avoid synthesis errors for REAL signals.

libraries/dsp/st/src/vhdl/st_sst.vhd

@@ -21,7 +21,7 @@
 
 LIBRARY IEEE, common_lib, mm_lib, technology_lib, dp_lib;
 USE IEEE.std_logic_1164.ALL;
-USE IEEE.math_real.ALL;
+USE IEEE.math_real.ALL;  -- for sim only
 USE common_lib.common_pkg.ALL;
 USE common_lib.common_mem_pkg.ALL;
 USE common_lib.common_field_pkg.ALL;
@@ -125,8 +125,9 @@ ARCHITECTURE str OF st_sst IS
   
   SIGNAL wrdata_re    : STD_LOGIC_VECTOR(c_mem_data_w-1 DOWNTO 0);
   SIGNAL wrdata_im    : STD_LOGIC_VECTOR(c_mem_data_w-1 DOWNTO 0);
-  SIGNAL wrdata_power : REAL;
 
+  -- Sim only signals for observing wrdata_power with indices in Wave window
+  SIGNAL wrdata_power : REAL;
   SIGNAL stat_bin     : NATURAL;
 
   SIGNAL stat_mosi    : t_mem_mosi := c_mem_mosi_rst;
@@ -243,10 +244,12 @@ BEGIN
   wrdata_re <= RESIZE_MEM_UDATA(stat_data_re) WHEN g_xst_enable=FALSE ELSE RESIZE_MEM_SDATA(stat_data_re);
   wrdata_im <= RESIZE_MEM_UDATA(stat_data_im) WHEN g_xst_enable=FALSE ELSE RESIZE_MEM_SDATA(stat_data_im);
 
+  -- synthesis translate_off
   -- View SST or XST power values in wave window (stat_data_im = 0 for SST)
   wrdata_power <= COMPLEX_RADIUS(TO_SREAL(stat_data_re), TO_SREAL(stat_data_im)) ** 2.0;
 
   stat_bin <= TO_UINT(stat_mosi.address(c_stat_ram.adr_w-1 DOWNTO 0)) / g_stat_multiplex;
+  -- synthesis translate_on
 
   -- For SST or for real part of XST
   stat_reg_re : ENTITY common_lib.common_ram_crw_crw_ratio

libraries/dsp/st/src/vhdl/st_xsq.vhd

@@ -46,7 +46,7 @@
 
 LIBRARY IEEE, common_lib, mm_lib, technology_lib, dp_lib;
 USE IEEE.std_logic_1164.ALL;
-USE IEEE.math_real.ALL;
+USE IEEE.math_real.ALL;  -- for sim only
 USE common_lib.common_pkg.ALL;
 USE common_lib.common_mem_pkg.ALL;
 USE common_lib.common_field_pkg.ALL;
@@ -106,8 +106,9 @@ ARCHITECTURE str OF st_xsq IS
   
   SIGNAL wrdata_re    : STD_LOGIC_VECTOR(c_mem_data_w-1 DOWNTO 0);
   SIGNAL wrdata_im    : STD_LOGIC_VECTOR(c_mem_data_w-1 DOWNTO 0);
-  SIGNAL wrdata_power : REAL;
 
+  -- Sim only signals for observing wrdata_power with indices in Wave window
+  SIGNAL wrdata_power   : REAL;
   SIGNAL stat_index     : NATURAL;
   SIGNAL a_sp           : NATURAL;
   SIGNAL b_sp           : NATURAL;
@@ -181,14 +182,15 @@ BEGIN
   wrdata_re <= RESIZE_MEM_SDATA(stat_data_re);
   wrdata_im <= RESIZE_MEM_SDATA(stat_data_im);
   
-  -- View XST power values in wave window
+  -- synthesis translate_off
   wrdata_power <= COMPLEX_RADIUS(TO_SREAL(stat_data_re), TO_SREAL(stat_data_im)) ** 2.0;
 
-  -- Translate statistcs [crosslets][in A][in B] order into indices
+  -- Indices for statistics [crosslets][in A][in B]
   stat_index <= TO_UINT(stat_mosi.address(c_stat_ram.adr_w-1 DOWNTO 0));
   a_sp <= (stat_index / g_nof_signal_inputs) MOD g_nof_signal_inputs;
   b_sp <= stat_index MOD g_nof_signal_inputs;
   crosslet_index <= stat_index / c_xsq;
+  -- synthesis translate_on
 
   ---------------------------------------------------------------
   -- COMBINE MEMORY MAPPED INTERFACES