Versions:
6.1
  Added mixture of tasker pause and loop cycles in Ripdetect and read char
  to give a smoother response.

6.2
  Missed Done Routine in 6.1  - now doesn't close if local or X00extOK
  but buffered flag is set to true.
  There was a file being written to when door timed out.  Some OS2 systems
  complained of endless pages being written to their disk.  I'm taking this
  out this version.  So if you have a use for it save it and put it back in.

6.3
  Wrong-O I guess a lot of you are using this file so I'm putting it back in.
  Added /C to specify comport on command line.  Dropfile comport number will
  override this option.

6.4
 Cleaned up the multi-tasker routines to allow easier flag passage to other
 units. Added SpeedRead which can be used in other units for a timed input
 response loop or propeller.

6.5
 Added /V command line parm that to turn local video off (actually to statback
 color).  Purge fossil buffer added to XFossil initialization.
 Added /W flag.  This just differentiates between straight dos systems and
 those without multitaskers running on novell or other network. This is so
 our tasker checker can give up time slices or just delay. Which is important
 only when using the delay in waiting for file locks to unlock.

6.6
 Added /M command for multi ctl file handling. This will be released around
 the time of the DDSetup Universal door setup program.
 (Remember for this to function make your control/config file name less than
  7 characters in length). Lasted less then a week. Fixes and new things
  in this version:

 New Things and Fixes by Steven R. Lorenz    11.18.94

1. IRQs 0-15 now supported.  Comports 1-4 supported.  Required change in
   ASYNC.asm (called SLASYNC here).
   Selectable Port Addresses added to .CTL file so sysop doesn't have to
   have a bunch of if 'nodex == 1 goto xxx' in his doorx.bat.
2. DV aware routines. Use examples as guide to installation.
   a. DV_Pause added to sreadch to make DV work more smoothly.
3. High speed BBS modem vs lowspeed user modem problem of lost characters -
   (basically RTS/CTS checking) -  Fixed
4. Carrierdetect during sendchar. Fixed
5. Rip detect.  Or WC3.9 or PCBoard15.0 dropfile driven.
6. Fast and correct ansi color routines.
7. PCBoard 15 support
8. Rip Detect or found on WC3.9+ or PCB15 dropfiles
9. TriBBS dropfile support  (untested)
10.RBBS vs Super BBS Dorinfo types supported
11.Lock baud and comm baud rates to 115,200
12.Windows,WindowsNT,OS/2,DOS 5.0+ time slice releasing.
   A Dos,Win, DV pause is taken after so many read cycles in read loop
13.fossil support to 38,400 using normal fossil calls.
   fossil support to 115,200 using X00 extended fossil calls.
   Use XFossil for any fossils (X00 or BNU) over 38,400.  This option does
   not open or close the fossil but meerly writes to it the way it is.
14.No-local video mode can save processing in multitasking windows or to
   give some user privacy when competing in game against the sysop.
15.Multiple control files can now be accessed by a command line parm.

6.7
 The current package with greatly expanded documentation and many additional
 items to include the new DDPlus setup program.