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Shareware Supreme Volume 6 #1
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1624.ZIP
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1993-04-06
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FYI
(Note: The origin of this information may be internal or external
to Novell. Novell makes every effort within its means to verify
this information. However, the information provided in this
document is FOR YOUR INFORMATION only. Novell makes no explicit
or implied claims to the validity of this information.)
TITLE: F15 STRIKE EAGLE III & WIZARDRY #7
DOCUMENT ID#: FYI-M-1624
DATE: 06APR93
PRODUCT: DR DOS
PRODUCT VERSION: 6.0
SUPERSEDES:
SYMPTOM: INSUFFICIENT MEMORY ERRORS OR COMPUTER LOCKS.
ISSUE/PROBLEM: DR DOS "pads" out the first 64k of conventional
memory for EXEPAKed executables. EXEPAK is a utility used to
compress .EXE files.
The algorithm used by the EXEPAKing code to decompress the
executable image and then perform the .EXE fix-ups uses a concept
known as "segment wrap" to detect the end of decompression. When
you have more than 575K available conventional memory the EXEPAK
decompression code thinks that it is done decompressing before it
has even started. It then proceeds to invoke the "decompressed"
executable image. This results in the error message "Packed File
Corrupt".
The F15 STRIKE EAGLE III and Wizardry #7 executables are treated
as EXEPAKed files by DR DOS 6. However, these programs don't need
to be padded to run correctly.
SOLUTION: To run these programs install PATCH326.ZIP. This
is an optional patch which prevents DR DOS from padding EXEPAKed
utilities automatically. Included in the zip file is a README
file with complete installation instructions. Also included is a
patched version of the DR DOS system file IBMDOS.COM.
NOTE: After installing this patch other applications may display
"Packed file corrupt" errors. This is because DR DOS is no longer
automatically padding. MEMMAX -L prior to starting the
application will correct this message. The easiest way to do this
is to create a batch file that will turn off lower memory (MEMMAX
-L, start the application and then turn it back on (MEMMAX +L)
after exiting the application. Word Perfect, for example, may
need this adjustment if used with this patch. The solution would
be the following batch file:
MEMMAX -L
WP
MEMMAX +L
PATCH326.ZIP is on the Novell BBS(408-649-3443) or CompuServe.