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- THD ProScan version 7
- ---------------------
-
- Uses Less Memory...
- -------------------
- THD ProScan Version 7 represents some major code changes from version
- 6. The most noted of them being reduced memory usage. During shells to the
- various utilities, it will release all but about 5k of it's memory to the
- other processes.
-
- Runs Faster...
- --------------
- It also runs slightly faster on complex directory structures. (In the
- case of my two "serious test files", it did in fact run in 75% of the time
- used by version 6). It is unlikely the average user will ever notice this
- improvement as they would be unlikely to ever encounter a file so complex as
- the test files. But will run noticeably faster on archives which contain
- many files due to a better archive identification screening process.
-
- Tests Further...
- ----------------
- The next improvement has been the increased ability to test imbedded
- archives. Test files which were previously designed to exceed the limits of
- tester as a means of seeing how far the tester would go, now pass testing by
- version 7 without incident. In fact, one file which made it through about
- 30% of it's imbedded files with version 6 now can be tested 100% with
- version 7. It was also apparent in this test that it could have continued
- imbedded testing far beyond the limits of that file.
-
- Saves The Original Archive's Date and Time...
- ---------------------------------------------
- Previous versions would allow the archivers and various test processes
- to change the time stamp of the test archive. In this version the date/time
- will be saved and restored at the end of testing, thus compensating for any
- uncontrollable changes.
-
- PKZIP's AV Protection is No Longer Optional...
- ----------------------------------------------
- Previously the option to not change PkZip's "AV" protected files has
- been optional. Because of the tendency of adding or removing files from this
- type of archive to corrupt results of the CRC test, files will no longer be
- added to or removed from "AV" protected "ZIP" files. (File comments will
- still be stripped and/or changed.)
- Also a problem in the "AV" identification process for PkZip's 204
- series has been repaired in version 7 of THD ProScan.
-
- File Removal from a List of Files...
- ------------------------------------
- THD ProScan Version 7 now supports the use of a "list" for removing
- files from archives. Comments from a number of sysops have said that they
- routinely encounter many more files that they would like to have removed
- than could be removed by the previous process.
- The install will ask if you prefer the old method or if you would like
- to use a list.
- Note that if using a previous configuration, you will not be prompted
- unless you choose to change the "K" option from the first finishing screen.
-
- Improved Interaction with TBSCAN...
- ----------------------------------
- The command line passsed to TBSCAN is now 100% compatible with
- TBSCAN 6+. The "fix" (THD61PCH) did allow version 6 to work with THD Proscan
- however it only worked in a limited capacity. This version fixes those
- limitations. TBSCAN versions prior to 6 are no longer supported.
-
- Incomplete Log Entries Accounted For...
- ---------------------------------------
- In version 6, the introduction of temporary logs also introduced
- "orphaned log entries". These entries would be temp logs created which were
- never appended to the final log file due to a runtime or other unexplainable
- error. Version 6 simply created a new temporary log and the old one was
- lost. Version 7 now searches for orphaned temp logs and appends them on the
- next run with a notice to the sysop that the entry is incomplete and the
- sysop should attempt to ascertain what happened.
-
- Ability To Change The Order Of Chosen Drives...
- -----------------------------------------------
- One sysop asked if THD ProScan could use a "Ramdisk" to further
- increase the speed. While it has always been able to do this, it would
- almost never happen, since the ramdrive would almost always be the last of
- the drives to be detected. THD ProScan attempts to use the drives in the
- order that they appear in the installation.
- So in this release a minor change will allow the order of found drives
- to be reversed, and another option to "rotate" the sequence of the drives.
- But keep in mind that the ramdisk must be initialized during the
- installation in order to be detected.
-
- Imbedded "GIF" and "TD0" problem fixed...
- -----------------------------------------
- In version 6, GIF and TD0 files which were found internally to
- valid archives were not removed immediately after testing. This caused
- version 6 to find them again and retest them eternally. Thus effectively
- locked up the system. (The test would eventually end with a runtime error
- but it could take an extremely long time.) GIF and TD0 files are now deleted
- immediately after passing the CRC check. (Thanks to Don Johnson for
- reporting this.)
-
-