This is a reasonably mature version of the Windows FHDL Simulator.

WinFHDL provides significant advances over the student FHDL simulator.  WinFHDL enhancements include the following.

- Multiple Edit windows.
- Full Text editing features, including search, replace and undo.
- PLA Language preprocessor.
- ROM Language preprocessor.
- Macro Preprocessor.
- Wizards to assist in constructing complex statements.

Development Version A:
Included missing file MHRUN400.DLL
Fixed problems with Help menu.
Fixed problems with wizard Help buttons.

Development Version B:
Included CTL3DV2.DLL and CTL3D.DLL in the distribution.
Fixed FHDLPARS.DLL 0001:0286 GPF
Fixed MYMEMMGR.DLL 0002:02EF GPF
Added Warning message for missing sub circuits.
Fixed problem with "Clear Trace"

Development Version C:
Added an "Options" menu item to display intermediate vectors.
Added the ability to enter multiple input vectors at once.
Fixed compiler ignoring "position" parameter on collect & distribute
Fixed collect simulation bug.
Fixed ALU status signal problems.
Fixed ALU Carry Out problem
Made ROM, PLA, and MACRO buttons persistent over multiple program runs
Forced recompilation after a change in ROM, PLA, or MACRO buttons.

Release Version 2.0:
Large number of bug fixes, including:
  Line number problems
  Use of Messages window for messages
  GPFs in the Macro Preprocessor
  Several other bug fixes
Ability to open files from command line
Ability to double-click on ckt files
Ability to add ckt files to Program Manager
Macro Test button
Message Window Clear button
Ability to edit and use Input Vector Files

Release Version 2.1:
Bug Fixes
Menu Shortcuts
Addition of a standard macro library
   maclib subdirectory of install directory
   several standard macros
Addition of windows driver language and associated screen
Addition of Schematic Capture
New program: Cell Editor

Release Version 2.1a:
Bug Fixes
Standard Circuit Library
   cktlib subdirectory of install directory
   several sample circuits
ASMs are FINALLY functional!
The ability to specify lists of libraries instead of just one
Demo of VHDL Export command

Release Version 2.1b
Bug Fixes Only