DigiWARE Release Notes   PN 93000241D
                                  for
                     XALL.SYS OS/2 ISA bus Device Driver
                             Version 1.5.6

                        IBM OS/2 2.11, Warp3, Warp4


                    Software               PN 40001479E
                    Software Manual        PN 92000244B

                           10 Jan 2000

INTRODUCTION
    XALL.SYS OS/2 device driver for ISA bus intelligent adapters

SUPPORTED PRODUCTS
    DigiCHANNEL PC/X*, COM/Xi, MC/Xi, Xem, C/X, EPC/X and PC/Xr

ENHANCEMENTS

BUG FIXES
    Corrected a race condition that existed in registering timer handlers
    for multiple cards which used to result in only the first card working.

KNOWN LIMITATIONS
    If there are multiple cards in the system and one has an 
    initialization problem, none of the cards will work.  
    The driver de-installs.

HISTORY

    9 August 1998
    Version 1.5.4

          1. A new config.sys switch exists enabling the user to modify the
             default parity error detection scheme used by the Digi board.
             The switch is /E: . Valid parameters are:

               C - Check parity errors
               D - 16450 mode parity error marking (DOSMODE)
               I - Ignore parity errors (i.e. error characters discarded.)
               M - Mark parity errors

             A switch with no parameters turns off all parity error detection.
             The default setting of 16450 parity error marking is used if
             no switch is used.

             Examples:

             /E:MCD - Mark parity errors using 16450 method (DOSMODE).
                      This is the default and is the same as no switch used.

             /E:I   - Ignore parity errors.  Error characters are discarded.

             /E:    - Turns off all parity error checking. This is the most
                      efficient mode.