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pltbutils required_updates.txt

While pltbutils is still in alpha- and beta state, backwards compatibility in

new versions of pltbutils is not prioritized, because the code is still under

development.

If you have made testbenches which use pltbutils, you may need to make

modifications if you update to a newer version of pltbutils.

This document lists required modifications to your testbenches.

alpha0005 -> alpha0006

For more information and examples, see specification_pltbutils.pdf .

1. One less file to be compiled:

   src/vhdl/pltbutils_type_pkg.vhd has been removed.

2. testname() has been removed. Call starttest() and endtest() instead.

3. In the testbech top, replace

      -- Simulation status- and control signals

      signal test_num       : integer;

      -- VHDL-1993:

      --signal test_name      : string(pltbutils_test_name'range);

      --signal info           : string(pltbutils_info'range);

      -- VHDL-2002:

      signal test_name      : string(pltbutils_sc.test_name'range);

      signal info           : string(pltbutils_sc.info'range);

      signal checks         : integer;

      signal errors         : integer;

      signal stop_sim       : std_logic;

   with

     -- Simulation status- and control signals

     -- for accessing .stop_sim and for viewing in waveform window

     signal pltbs          : pltbs_t := C_PLTBS_INIT;

4. In the testbench top, under begin, remove

      -- Simulation status and control for viewing in waveform window

      -- VHDL-1993:

      --test_num  <= pltbutils_test_num;

      --test_name <= pltbutils_test_name;

      --checks    <= pltbutils_chk_cnt;

      --errors    <= pltbutils_err_cnt;

      -- VHDL-2002:

      test_num  <= pltbutils_sc.test_num;

      test_name <= pltbutils_sc.test_name;

      info      <= pltbutils_sc.info;

      checks    <= pltbutils_sc.chk_cnt;

      errors    <= pltbutils_sc.err_cnt;

      stop_sim  <= pltbutils_sc.stop_sim;

5. Feed stop_sim input of testbench component with pltbs.stop_sim instead

   of just stop_sim.

6. If the testcase procudure resides in a separate VHDL component,

   that component should output pltbs of type pltbs_t.

7. The testcase process should instansiate the following variable:

     variable pltbv  : pltbv_t := C_PLTBV_INIT;

8. In calls to pltbutils procedures, replace the argument

     pltbutils_sc

   with

     pltbv, pltbs

9. In the waveform window, replace the old simulation status signals

   with pltbs, and expand it to view the member elements.

alpha0004 -> alpha0005

1. One more file needs to be compiled: src/vhdl/pltbutils_user_cfg_pkg.vhd .

2. Call starttest() before a test, and endtest() after.

   Previously, testname() should be called before a test, but testname() is

   now depricated and will be removed in a later version.