[comp.sys.ibm.pc] Zenith VDISK ram disks

aland@infmx.UUCP (Dr. Scump) (06/15/88)

Has anybody experienced problems with extended memory RAM disks
using Zenith's VDISK (DOS 3.1 and 3.2, at least) ?

Apparently, There is a "standard" way (as established by IBM/MS DOS VDISK)
that DOS denotes how much extended memory is available; this "field" is
updated by VDISK to reflect extended memory consumed/remaining if
an extended memory RAM disk is built.  (Purists, please forgive
the *technically* misworded problem statement).  Apparently, Zenith's
VDISK does not "mark" its extended memory consumption in the same
manner.  As a result, two packages that I have which use extended
memory trash any extended memory VDISK RAM disks (because they thought
those RAM addresses were "available").  If I have expanded memory RAM 
disks (using Intel's driver), everything is OK.

Has anybody run into this before?  Does it happen in DOS 3.3?

Please email, and I will summarize.  Thanks in advance.

-- 
 Alan S. Denney  |  Informix Software, Inc.  |  {pyramid|uunet}!infmx!aland
 Disclaimer: These opinions are mine alone.  If I am caught or killed,
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