Digi Release Notes 93000154AE
				      for
			     Digi EPC/X, C/X, Xem,
			    Xr and Xe Async Drivers

			 SCO UnixWare 2.0x, 2.1x and 7
			Software Package P/N 75000154AK

		      AccelePort Async Device Driver 7.0.7
			      EPC/X  FEP/OS 2.4.3
				Xem FEP/OS 2.4.4
				Xr FEP/OS 2.4.4
				C/X FEP/OS 3.6.0

			  Digi Xe Device Driver	7.0.7
			      Digi Xe FEP/OS 7.09

				   MPI V4.2.2

		       Diskette	#1 P/N 40001157AA (3.5")
		       Diskette	#2 P/N 40001381AA (3.5")
			   Image File  P/N 40001802AA
			   Source File P/N 81000019AA

				October	15, 2001


	  1. Introduction

	     This Digi software	package	includes  device  drivers  for
	     Digi  Xe,	Xr, EPC/X, C/X and Xem product families.  This
	     package also contains Digi's  MenuPort  Interface	(MPI),
	     Port  Configuration Utility (PCU) and Digi	Port Authority
	     (DPA).

	  2. Supported Products

	     ISA Adapters

		- AccelePort C/X
		- AccelePort EPC/X
		- AccelePort Xem
		- AccelePort 4r
		- AccelePort 8r
		- AccelePort 4r	920
		- AccelePort 8r	920
		- AccelePort 2e
		- AccelePort 4e
		- AccelePort 8e
		- AccelePort 16e
		- AccelePort 4e	422
		- AccelePort 8e	422

	     PCI Adapters

		- AccelePort Xem
		- AccelePort EPC/X
		- AccelePort C/X



				     - 1 -






		- AccelePort 2r	920
		- AccelePort 4r	920
		- AccelePort 8r	920
		- AccelePort 4r
		- AccelePort 8r
		- AccelePort 4r	422
		- AccelePort 8r	422

	  3. Enhancements

	     None

	  4. Bug Fixes

	     The firmware for our Xr and Xem  product  families	 would
	     (under  very  specific  circumstances) sometimes crash if
	     placed under high	stress	for  extended  periods.	  This
	     failure has been addressed	with a firmware	upgrade.

	  5. Known Limitations

	     Under UnixWare 7, PCU is no longer	an option  for	confi-
	     guring Digi async ports.  You are now able	to use "scoad-
	     min serial" or "scoadmin printer" for port	configuration.
	     You  need	to  have  a  minimum  OS  level	 of 7.0.1 with
	     ptf7053b	 or    above	which	 is    available    at
	     ftp://ftp.sco.com/SLS/ptf7053b.   If you are at version 7
	     of	the operating system, you need to upgrade to 7.0.1  by
	     applying
	     ftp://ftp.sco.com/Supplements/unixware7/update701.	 As of
	     Unixware 7.1.0, there are no OS patch requirements.

	     If	you MUST use PCU, you can run it from the command line
	     using  the	 option	 -o.  If you use PCU, you MUST NOT use
	     the serial	manager	as system conflicts can	occur.

	     If	multiple Xr(PCI) cards are being configured,  and  the
	     cards  support  different numbers of ports, make sure the
	     card placement on the PCI bus match the  order  in	 which
	     they are configured in MPI.

	     UnixWare 2.x has a	bug (fixed by ptf 3181,	available  for
	     download	on   the  SCO  Web  site)  that	 prevents  the
	     download/DPA/PCU drivers (epc1 and	pcx1)  from  unloading
	     in	  certain  cases.   If	epc1  and/or  pcx1  cannot  be
	     unloaded, the user	must reboot to affect  driver  changes
	     made via MPI.

	     If	 Digi  loadable	 drivers  are  removed	but  not   re-
	     installed,	the user is advised to relink the kernel prior
	     to	rebooting the UNIX  system.   The  utilities  used  to
	     remove  a	driver	from  the  system do not remove	driver
	     references	 from	the   file   "/etc/conf/cf.d/sdevice".
	     Relinking the kernel causes this file to be rebuilt.

	     The time to perform various stages	in the MPI install and



				     - 2 -






	     change  process  can  vary	 widely	 depending on when the
	     idbuild for a driver is done.  Since the  idbuild	for  a
	     driver  cannot  be	 done  while the driver	is loaded, MPI
	     will do the build at one of three different times:

	     - Driver not loaded - build is done during	configuration

	     - Driver was changed while	it was loaded and is now being
	       reloaded	- build	is done	during load

	     - Driver was changed while	it was loaded and  the	system
	       is  now	being  rebooted	- the build is done during the
	       load that occurs	after the boot

	     MPI must be run after pkgadd to install new products.

	     Before the	MPI package can	be removed  from  the  system,
	     the  remove  installed  products  option  must be invoked
	     through MPI to remove all configured Digi drivers.

	     At	this point, the	 driver	 supports  PCI	initialization
	     using the built in	PCI BIOS routines.  If the hardware or
	     software does not allow use of the	PCI BIOS routines, the
	     board initialization will fail.

	     Executing pkginfo -l on the MPI package  will  display  a
	     message  of  partially installed pathnames.  This message
	     can be ignored.

	     The ditty printer	option	does  not  guarantee  complete
	     writes of data to slow printer devices unless the tcdrain
	     mechanism is used.

	     For maximum performance of	throughput, all	of the concen-
	     trators should be evenly divided between the 2 lines.

	  6. Manual Errata

	     Micro Channel and dscreen are  no	longer	part  of  this
	     release.	Also, EISA adapters, the Avanstar product fam-
	     ily and the  T1  Modem  Bank  are	no  longer  supported,
	     either.   Any  information	 in the	MPI manual that	refer-
	     ences these features should be ignored.  All other	infor-
	     mation applies to this release.

	  7. History

	     MPI V4.2.0:

		Corrected  a  problem  that  would  not	 let  adapters
		install	 on  any  operating  system version lower than
		UnixWare7 7.1.0.