Jeff has made his VHDL sources available. With those sources, as well as the schematics and the Windows software also available on his site, you have now all the necessary stuff to build your own HxC Floppy Drive Emulator :)
Check his site here for more information.

For the impatient :

• VHDL sources and schematics
• Software (Windows 2k/XP)
• FTDI drivers
• For those who want to use .IPF/Caps file format, get CAPSimg.dll too, and place it in the same directory as the HxC Floppy Drive Emulator software.
  
  

Have fun :)