Driver:	TWFUTCAM, Version 4.20.00 June 01, 1993
	Copyright (c) 1990-1994, Emeritus Technologies.
	All rights reserved.

      TapeWare Future CAM Device Driver Module

      Date            Mod     Description
      -----------     ---     -----------------------------------------------
      05-Aug-1992     RAC     Copied from TWASPI and started conversion to
                              Future Domains Future CAM specification

      06-Aug-1992     RAC     Due to the fact Future CAM does not support
                              I/O from above 1Mb like ASPI, changed all
                              physical pointer passing to virtual ptrs and
                              removed all *_AT flags from the CCB. Also, had
                              to add TapeWares Memory strategy handler to
                              inform the kernel not to use extended or XMS
                              memory, only standard.

      24-Aug-1992     RAC     Under DOS, Future/CAM is apparently not saving
                              the registers as indicated in the Future/CAM
                              documentation. The DS segment registers was
                              getting fouled up and pointing into the 
                              TapeWare data segment. Also, in the callback
                              function SignalCallback, added a CLD 
                              instruction to make sure the direction flag
                              on the CPU is cleared.

      03-Sep-1992     RAC     Corrected problem in GetControllerInformation
                              using sprintf to return the status info. This
                              is not legal under DOS.

      05-Sep-1992     RAC     Future/CAM for DOS is not allowing a
                              disconnect to occur without a Save Data Ptrs 
                              message. It gives a "Unexpected Reselect"
                              error. ANSI spec specifically states that it
                              is legal for a device to disconnect WITHOUT
                              sending a prior Save Data Ptrs message if
                              no data has been sent or received. 
                              Unfortunately, ADIC followed the ANSI spec
                              and does not work correctly with CAM since
                              it does not send a Save Data Ptrs message
                              prior to loading an element.

      06-Sep-1992     RAC     Removed DeviceTimeout feature. This was
                              causing serious problems with Wangtek QIC 
                              drives and the ADIC autoloader. It seems that
                              Future/CAM for DOS simply ignores the timeout
                              value that we send, so it has to be disabled..
                              Yet another problem to report to FutDom...

      06-Sep-1992     RAC     We have a problem here... We cannot enable
                              disconnects for the reason previously stated
                              on Sept 5. Apparently, if we do not allow
                              disconnects, Future/CAM for DOS will 
                              automatically timeout after 5 seconds 
                              regardless of what the sc_timeout field is
                              set to. In order to support the majority of
                              devices, doing normal things like reten or
                              format, which take longer than 5 seconds to
                              complete, we must re-enable disconnect.
                              This will not work with some devices, but
                              unfortunately, theres not a thing we can
                              do about it except yell very loudly at
                              Future Domain... The good news is that 
                              Future/CAM for NetWare/386 seems to be working
                              just fine without any of the messing around
                              required for DOS.

      30-Jan-1993     RAC     Removed processing of DEVLOAD.

      01-Jun-1993     GMM     Update to revision to 4.20.00

