Driver:	TWMNT, Version 4.20.00 August 19, 1993
	Copyright (c) 1990-1993, Emeritus Technologies.
	All rights reserved.

	TapeWare Mountain NCR-5394 Controller Driver

	This is the implementation of the NCR-5394 series of controllers. 

	Date		Mod	Description
	-------------	---	-----------------------------------------------
	04-Jan-1993	RAC	Started conversion from TW5380.C for the
				Mountain controller.

	07-Jan-1993	RAC	Fixed problem with reading FIFO count register
				after the read of the interrupt mask register.
				When a device wants to disconnect in the
				middle of a data transfer, the FIFO flags
				register must be read prior to the the int
				mask register in order to determine the
				actual number of bytes that have been 
				transferred.

				Released to Mountain Network Technologies for
				their initial testing and certification.

	12-Jan-1993	RAC	Correct problem with not enabling DMA on
				PS/2 systems and shifting the address&count
				if the channel was >= 4 and PS/2 flag was set.

	30-Jan-1993	RAC	Removed DEVLOAD processing.

	03-Mar-1993	GMM	Correct problem with command being loaded into
				the SBIC while it was in the wrong state when
				doing simultaneous operation on mult. devices.

	09-Mar-1993	GMM	Eliminate command acceptance poll wait.  Set
				up commands to be processed on a first come,
				first served basis with automatic reload of
				rejected commands.  Eliminate need to reserve
				local process buffer for exclusive use of 
				certain commands.  Add IOPB state updates.

	16-Mar-1993	GMM	Eliminate possiblity of split pointer update
				causing unpredictable errors.

	18-Mar-1993	GMM	Change programming of NCR CLOCK register so
				SCSI bus timing is not violated. This was
				causing an anomolous condition on SCSI bus.

	22-Mar-1993	GMM	Modifications in error handling to reduce
 				possibility of undeclared errors and in-
				explicable hangups.

	01-Jun-1993	GMM	Update to revision to 4.20.00

	19-Aug-1993	GMM	Fix so spurious interrupts handled with
				more aplomb.
