JV>As I have recalled earlier, my system (486DX2 66) is much
JV>faster with FP40 installed. This has to do with the faster
JV>handling of the harddisk.

JV>However during the regular status checks the COM1 port is
JV>not serviced in time causing overruns. Does somebody know
JV>how I can avoid overrun of COM1.

Most likely, if you add /A:0 /U:0 /!BM to your IBM1S506 line your
problem (and the added speed) will go away.  This disables
busmastering which is on by default in the newer HD drivers and which
can cause serial problems. You might also try adding /!SMS to the end of
the line as well to make things even slower.  You can use the /V switch
to see what the driver is seeing for your HD's and how they are being
set up.  Note that there is at least one version of IBM1S506 that
ignores the !BM switch, if you try the DANIS IDE driver, this problem is
rectified.

Rob.
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 X SLMR 2.1a X OS/2: Windows with bullet proof glass.

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