Release Notes PN 93000626_D

                          Digi Acceleport Xp

                              80006858_D

                          December 19, 2005


INTRODUCTION

    This is a production firmware release for the Digi Acceleport Xp.

    The Acceleport Xp is a high speed intelligent PCI serial adapter
    designed to offload the processing requirements of handling RS232
    serial data from a host operating system.  It provides many
    desirable characteristics such as low latency and interrupt
    overhead.

KNOWN ISSUES:

    There are no known issues with the firmware at this time.

CHANGE LOG:

80006858_D:
    - Fix OPOST stair-stepping failure introduced in 80006858_C

80006858_C:
    - Add RTS toggle feature
    - Add support for synchronous serial communication. 
    - Add support for potential 32-port product
    - Optimize receive interrupt to improve overhead

80006858_B:
    - Fix failure where configuration requests to the board could get
    lost
    - Fix failure where OPOST flag would sometimes cause system crash.
    - Fix failure where board could hang indefinitely in transmit
    interrupt.
    - Fix failure where transparent print could hang the board.
    - Significantly improve latency of system
    - Flow control now allowed on all signals
    - Add support for potential multi-electrical product

80006858_A:
    - Initial release