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Frostbyte's 1980s DOS Shareware Collection
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floppyshareware.zip
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XDISK330.ZIP
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XDISK.NEW
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1992-01-01
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xDISK
Copyright (c) 1989-1992, FM de Monasterio
Licensed Material - All rights reserved
Version 3.30: *Feedback/Directory Listing*
Visual and audio feedback during password-access checking are not the default
condition any longer. They must now be selected by the switches /FV and /FA,
respectively, and can be disabled via switch /F-. Added automatic encryption
of the password. Due to the requests of a number of users, added audio feed-
back during DOS access to the RAM-disk via switch /A± (the old gate switch /A
is now switch /G±). Added directory listing service to the Status/Usage panel
via key <F3>. Modified the Status/Usage/Help panels for better legibility and
faster Mouse support.
Version 3.20: *MS-DOS 5.0*
Due to changes in undocumented data structures in MS-DOS 5.0, the command-line
loading of xDISK is temporarily restricted to DOS versions 2.x through 4.x, as
its process of character-device loading can produce memory allocation problems
in DOS 5.0. The loading of the driver via the CONFIG.SYS file is not affected.
The self-installation of XDISK.SYS in the upper memory area is now implemented
through either a DOS-based memory allocation (switch /H[n]!), if MS-DOS 5.0 is
configured to control UMB allocation (e.g. command 'DOS=UMB' in the CONFIG.SYS
file, and the drivers HIMEM.SYS and 386EMM.EXE installed), or an XMS-based UMB
allocation (switch /H[n]), as in the case of versions 3.00 and 3.10. Note the
addition of '!' to switch /H[n] in the former case. A problem during command-
line loading of xDISK under buggy versions of IBM-PC DOS 4.00 has been solved.
An error in the memory address of the resident driver shown in the Help/Status
panel has been corrected.
Version 3.10: *DOS Command-line Loading*
It is now possible to load XDISK.SYS from the DOS command line (as opposed to
during booting via CONFIG.SYS) via XDISK.EXE; this allows the installation of
xDISK drives without having to edit CONFIG.SYS and to reboot the CPU. Switch
/L is now used in XDISK.EXE to denote command-line loading of the driver; the
high-memory loading of the driver (which was mediated by switch /L in version
3.00) is now mediated by switch /H. A command-line loaded xDISK drive can be
uninstalled with switch /U. Introduced the 486 release of xDISK. Added switch
/K to avoid display of installation banner.
Version 3.00: *386 Release/UMB selfloading*
Increased performance by improving the optimization of mathematical routines.
Introduced the 386 release of xDISK, developed through versions 2.60 to 2.97.
(The 386 release operates faster than the 286 one by a factor of about 1.5 or
so; however, note that xDISK input/output times remain primarily dependent on
the performance of the expanded memory system.)
Also introduced the option of self-installation in upper conventional memory,
i.e., above the 640-kb limit of DOS, but below the 1-Mb limit of conventional
memory, if an extended-memory manager compatible with XMS 2.0 is also present
and a free upper-memory block of 2 kb is available; this preserves the amount
of conventional memory available for DOS use. Unlike the high-memory loading
provided by some (386) memory managers, XDISK.SYS self-loading in high memory
only requires a free block of the size of the resident, and not of the entire
driver. See XDISK.DOC for details on high-memory loading.
The user can specify a lower high-memory limit above which the driver should
try load itself (if a block is available above such a limit), to avoid upper-
memory areas having slow access times. (The utility TIMEM.EXE can be used to
measure conventional memory access times.)
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┌─────────────────────────────────────────────────────────────┐
│ Trademarked names are the property of the respective owners │
└─────────────────────────────────────────────────────────────┘
Earlier version news removed
[END]