boxdemo.zip|SEC-PC, GWBasic Demo Program.
secpcdll.zip|SEC-PC DLL  for Windows 3.1x
fcssecnt.zip|SEC-PC Driver for WinNT 3.5x
secint.zip|SEC-PC Interrupt Tests 
edll321b.zip|SEC DLL Series, binaries
edll321s.zip|SEC DLL Series, sources