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1994-01-27
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FixVDK Ver 1.0 -- 03/12/88 -- Djj
FixVDK will apply a set of patches to THE SURVIVOR recoverable
ram disk distributed by Expansion Technologies. It requires that
the file VDK-handler be located in the L: directory (its usual
home).
It fixes 3 bugs and adds 1 nice feature. It should work with
the beta versions that were floating around, although one REALLY
should get the released version since most beta copies are ILLEGAL
copies and the released version is much more robust and doesn't
use memory that the DOS trashes on bootup.
FixVDK will run from the WorkBench or from the CLI. From the
WB, just click on its icon and wait until the `done' requester
pops up. Click OK. That's it.
From the CLI, simply type: FixVDK
----------------
Ver 1.0
----------------
Things fixed:
1) Seek() function call was broken. This caused problems with
NewZap. NewZap couldn't zap a file if it was in VDK. Also,
WordPerfect wouldn't load a file from VDK. It will now.
2) VDK: didn't set a file date properly. The DOS LIST command
will complain about the invalid dates. The ARP LIST command will
miss most of the files in VDK because of the dates being negative.
PLINK's KEN S. fixed the ARP LIST command. I fixed the VDK:
problem.
3) VDK: reported that it used 536 bytes per sector. This
caused some confusion as to how much memory it was using. It now
reports a block size of 512 bytes.
Thing added.
VDK used to return ZERO when asked how much room it had
left. This made CliMate mad because it wouldn't write into a
`disk' that was full. There must be other programs out there that
behave this way, so I made VDK return the amount of available
memory (almost) instead.
BUGS: The released version of VDK doesn't use memory at C00000
nor does it use the AllocMem() function when it needs a block of
memory. Instead, it scans the system memory lists looking for the
right size and type of memory to suit its needs. VDK: Beta
versions use C00000 memory and get trashed on reboot.
When computing the memory available, I duplicate the scan
looking for blocks that are bigger than VDK's `typical' memory
request and tally these blocks. This leads to an approximation of
memory available for use by VDK, but depending on the amount of
memory fragmentation, it can be off by as much as 50K (or more).
Usually, VDK will run out of room even while claiming some small
amount of memory is available.
------------
FixVDK is placed in the public domain by D.J.James
VDK aka THE SURVIVOR is Copyrighted by Neil Katin and is
distributed by Expansion Technologies, 40127 Landing Parkway,
Fremont, CA 94538, or call 415-656-2890.
------------
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