                               CENTURION

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                            InfoMail/86 1.21

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            Differences between InfoMail/86 and InfoMail/386

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0.      Introduction

        As is mentioned in the file README.TXT, the manual included in
        this archive is the manual for InfoMail/386 1.20.  InfoMail/386
        1.21 is just a bug fix release, and InfoMail/86 1.21 is a port
        of InfoMail/386 for 8086 machines, and other machines which have
        trouble with DPMI programs.

        The manual will not be updated until the next major release of
        InfoMail (i.e. InfoMail 1.30 or greater).  Therefore this file
        is included to point out exactly what differs between
        InfoMail/386 1.20 and InfoMail/86 1.21.

1.      System Requirements

        Obviously, InfoMail/86 does not require a 386 processor.  It
        should run on an 8088 or better, RAM requirements unknown.
        Since the author's lowest spec machine is a 2MB 386sx16, exact
        requirements are not known.

2.      Maximum Document Size

        InfoMail/386 allows a maximum document size of 65535 bytes.  Due
        to the lack of a flat memory model on 8086 processors,
        InfoMail/86 can only manage 64000 bytes per document.

3.      DPMI Server

        No DPMI server is supplied with InfoMail/86, because none is
        needed.

4.      Speed

        For screen updates the 8086 version appears to be faster than
        the 386 version.  More general speed tests have not been
        performed.  The strange speed difference is probably due to the
        fact that the DPMI version needs to switch between real mode and
        protected mode every time it displays something.  This will also
        affect disk I/O to some (unknown) extent.

5.      Acknowledgements

        Thanks go to Rob Wilson at 2:2502/381 for his help in converting
        InfoMail for the 8086.
