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- Screen Saver
- PROGRAM VERSION HISTORY
- ========================================================================
-
-
- Changes in 5.1
- * Corrected problem where, after reloading options with SCSAVINS,
- enhanced-kbd calls were used on non-enhanced-kbd systems, causing
- hot-keys and passwords to be passed through to applications.
-
- * Added support for Hercules monochrome-graphics cards.
-
- * Added new program, SCSLOG.COM, to log events (lock, unlock, invalid
- password, etc).
-
- * Added /F option to SCSAVER.COM to allow specification of option
- file. Also, once SCSAVER is resident, the default option file
- won't be read unless the /F option is specified.
-
- * Added /T+,/T- to SCSAVER.COM to provide the same functionality as
- the /VTRAP option of SCSLOAD.
-
- * Added /A:nn option in SCSAVER.COM to limit the number of incorrect
- password attempts after the lock has engaged. Specifying zero will
- allow unlimited unlock attempts.
-
- * Added code to "aggresively" take over the keyboard interrupt when
- the security lock engages, to insure that its possible to enter
- the unlock password.
-
- * Added support for event logger to all programs.
-
- * Added support for 3-button mice, if they use an Microsoft
- compatible driver (problem SCS05001).
-
- * Corrected reported compatibility problem with Borland's Turbo
- Debugger (problem SCS05002).
-
- * Included Int54 system adapter (I54ADAPT.SYS) to correct potential
- problems with some BIOSs.
-
- * Added new program, SCSCGA.EXE, to modify CGA screen-restore
- parameters (problem SCS05003).
-
- * Changed SCSLOAD.EXE to detect when it has loaded a program that
- goes TSR (this is a no-no). Changed /VTRAP option to /T+, /T-.
-
- Changes in 5.0
- * Added support for the DOS 5.0 Task Switcher API. This corrects
- a problem that caused the mouse to get lost when switching tasks.
-
- * Close STDIN/STDOUT handles before going TSR. This allows all
- screen output to be redirected during initial loading.
-
- * Added /BIOS option to force the use of BIOS output instead of DOS
- Standard output.
-
- * Added optional "Master Lock Hot Key" to invoke lock regardless of
- mode (customer request).
-
- * Added confirmation tone when valid password is accepted (customer
- request).
-
- * Require carraige-return before validating password (customer
- request).
-
- * Added LOCKNOW option to invoke keyboard lock from command line
- (customer request).
-
- * Added /C+ and /C- options to respect or ignore case of password
- (customer request).
-
- * Security lock will now prevent Desqview menu or DOS 5.0 Task
- Switcher menu from being popped up and will prevent switching
- windows or tasks.
-
- * Release Environment block when loading high, to conserve memory.
-
- * Current resident parameters will be displayed when using the "/?"
- (help) option.
-
- * Improved mouse locking by locking interrupt driven routines.
-
- * Omit mouse support code when loading without mouse driver or with
- /M- switch.
-
- * Added new program, SCSREMOV, to remove Screen Saver from memory.
-
- * Added documentation for application programming interface that
- allows user applications to communicate with Screen Saver (See file
- SCSAVER.API for details).
-
- * The program SCSAVINS is now referred to as the "setup program" in
- the documentation.
-
- * Add /ON, /OFF, /LOCK, /LOCKONLY and /VTRAP options to SCSLOAD.
-
- * Reduced memory requirements for SCSLOAD to under 2K.
-
- * Corrected the following reported problems:
- SC04901: F1-F12 won't work as hot-keys.
- SC04902: Misleading message "No Mouse Driver"
- SC04903: Screen won't restore when some games are run.
- SC04904: /R- doesn't work on non-enhanced keyboards.
- SC04905: No mouse monitoring until first mouse app run.
-
- Changes in 4.9
- * New option file setting to allow /Q to be the default.
-
- * Password Change program now supplied.
-
- * Added "default mouse handler" to allow Screen Saver to detect mouse
- movement, even when no mouse program is running.
-
- * Prevent mouse activity while security lock is engaged.
-
- * Added code to detect when Windows has been started and ended.
- Screen Saver will suspend itself if run under Windows.
-
- * Added /K option to force use of older keyboard BIOS calls.
-
- * Corrected the following reported problems:
- SC04801: Password does not unlock system under PcTools DeskTop.
- SC04802: Mouse activity not detected under Flowcharting program.
- SC04803: Password not accepted under PcTools DeskTop.
-
-
- Changes in 4.8
- * Calculation of resident size now more accurate.
-
- * Application Load program now provided to temporarily set options.
-
- * Added support for extended keyboard BIOS (and more hot keys).
-
- * Added /U (unusual VGA) option to handle VGAs that are not
- 100% compatible and /Q (quiet mode) to suppress messages.
-
- * Added context-sensitive help and /SAVEONLY option to setup
- program.
-
- * Corrected the following reported problems:
- SC04506: VGA blanking incompatible with some VGA systems.
-
- Changes in 4.7
- * Correct problem that caused lock timer to be reset by video
- interrupts (even if /V- in effect).
-
- * Correct problem that prevented lock from engaging if a video
- interrupt occurred after hot-key.
-
- * Added message advising when no password is installed.
-
- * Corrected the following reported problems:
- SC04403: Screen won't blank under DesqView unless WTDS=Y/VTG=N.
- SC04502: Screen won't blank under DesqView unless WTDS=Y/VTG=N.
- SC04507: Screen won't blank under DesqView unless WTDS=Y/VTG=N.
-
- Changes in 4.6 (internal release only)
- * Correct error that could cause problems on CGA and MDA displays
- (AX register not preserved).
-
- * Added support for MCGA display adapters, present on some PS/2 model
- 25s and model 30s.
-
- * In response to user requests, added LOCKONLY option to invoke
- security timer without screen blanker.
-
-
- Changes in 4.5
- * Reworded certain setup program options to prevent confusing
- double-negatives (such as Ignore Mouse = NO).
-
- * Changed blanking algorithm to use VGA registers, when VGA present.
-
- * Added command-line option selection.
-
- * Allowed default option file (SCSAVER.DAT) to be optional.
-
- * Corrected the following reported problems:
- SC04404: Some mouse programs cause unpredictable results.
- SC04405: Mouse activity doesn't restore screen after BLANK n cmd.
-
- Changes in 4.4
- * Fixed some documentation errors.
-
- * Corrected the following reported problems:
- SC04301: SCSAVER sometimes doesn't detect mouse movement.
- SC04302: SCSAVINS won't change hot-key to NONE.
- SC04401: Some programs complain "No Mouse Driver Loaded".
- SC04402: SCSAVINS locks up system when no CPCA handler present.
-
- * Improved setup program.
-
- Changes in 4.3
- * Reworked documentation.
-
- * Added mouse support to setup program and resident program.
-
- * Added setup option to prevent mouse interrupts from resetting
- blanking timer.
-
- * Stored permanent default options in a separate file, instead of
- modifying the .COM file.
-
- Changes in 4.2
- * Added setup option to allow the key that restores the screen to
- be ignored (ie, not passed to application) or honored (passed to
- application).
-
- * Made ON the default if no command-line arguments specified.
- * Corrected bug where "security lock active" message was not
- displayed if LOCK was specified during initial load (even though it
- functioned correctly).
-
- * Corrected bug that allowed LOCK to engage, even though no password
- was defined.
-
-
- Changes in 4.1
- * Changed hot-key blanking logic so that lock will engage when screen
- is blanked via hot-key (if LOCK option is on).
-
- * Added option so that blanked screen will not be restored if lock
- has engaged until after password has been entered.
-
- * Reduced resident size by a few bytes.
-
- Changes in 4.0
- * Added setup option to prevent video interrupts from resetting
- blanking timer.
-
- * Allow additional hot-keys for screen blanking.
-
- * Change EGA/VGA detection logic to make detection of monitor type
- more reliable.
-
- * Incorporated CPCA logic.
-
- * Minor bug fixes.
-
- Changes in 3.0
- * EGA screen blanking now supported.
-
- * New command-line option that will allow the screen to be blanked
- on-demand from a batch file.
-
- * Begin documenting program history.
-
-