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cd770310.txt
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1997-10-05
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This README describes CD-ROM device driver and software parameters for
DOS and OS/2.
------------
| For DOS |
------------
When the CD-ROM device driver is installed in your computer, the
installation program (UINSTALL.EXE) automatically modifies the
CONFIG.SYS file and AUTOEXEC.BAT file so that your computer can
access the CD-ROM drive.
1) Device Driver IBMTPCD.SYS Parameters
For the IBMTPCD.SYS device driver, the line in CONFIG.SYS is in the
following format.
DEVICE=[drive:][path]IBMTPCD.SYS /R [/C] [/S]
This is the CD-ROM device driver (IBMTPCD.SYS) statement. Make sure
this line is inserted after the EMM386 statement.
[drive:][path]IBMTPCD.SYS
Specifies the location (drive and directory) and name of the
device driver file.
/R
Enables the resident type device driver. Even when the CD-ROM
drive is not installed at power-on, the device driver can be
loaded in the memory. To disable this option, remove the syntax.
[/C]
Sets the cache size in the XMS memory. When this parameter
is set, the cache size in the XMS memory is 512 sectors.
When it is not set, the default value is 0.
[/S]
Sets the power-saving mode to OFF. When using DOS with another
operating system (for example, when using it with OS/2 in dual
boot), set the power-saving mode to OFF using this parameter.
2) MSCDEX (Microsoft CD-ROM Extensions) Parameters
Microsoft CD-ROM Extensions (MSCDEX.EXE) is an executable program
for MS-DOS (Version 3.1 or higher) that works in conjunction with
the device driver (IBMTPCD.SYS) to allow your computer to access
CD-ROM discs.
The syntax of the MSCDEX.EXE entry in AUTOEXEC.BAT is:
[drive:][path]MSCDEX.EXE /D:TPCD001 [/M:n][/E][/V][/L:x]
[drive:][path]MSCDEX.EXE
Specifies the location (drive and directory) of the MSCDEX.EXE
file.
/D
Specifies the name of the CD-ROM drive, TPCD001.
[/M:n]
Specifies the number of sector buffers for temporary storage
of the most recent disc data. For example to specify four
sector buffers you would use:
C:\MSCDEX.EXE /D:TPCD001 /M:15
UINSTALL will set this value to 15. The default value is 4.
[/E]
Specifies that the computer will use expanded memory,
if available.
[/V]
Displays on the LCD a summary of RAM allocation and
expanded memory usage at power-on.
[/L:drive letter]
Specifies the drive letter to be assigned to the CD-ROM drive.
Do not assign a letter already used by an existing drive or the
computer will be unable to access the CD-ROM drive.
3) SMARTDRV cache for PhotoCD and CD-i movies
If you are using DOS SMARTDRV caches and planning to use a Photo CD
or multiple session discs, you have to add /U parameter to the SMARTDRV
line in the AUTOEXEC.BAT file. This is because Photo CDs or multi-session
discs are not compatible with the SMARTDRV caches.
To be able to play CD-i movies in Windows 3.11, do not cache the
CD-ROM drive by the SMARTDRV Version 5.0 or 5.1, which is supplied
with PC DOS Version 7.0.
------------
| For OS/2 |
------------
This section explains the parameters in the CONFIG.SYS file for
the OS/2 CD-ROM device drivers.
1) Device Driver OS2CDROM.DMD (Device)
DEVICE=OS2CDROM.DMD [Options]
This is the CD-ROM device class driver.
The following options apply:
[/V]
Displays messages on the LCD during the installation.
[/Q]
Does not display messages on the LCD during the installation.
2) Device Driver IBMIDECD.FLT
BASEDEV=IBMIDECD.FLT [Options]
This is the IDE adapter device driver for ATAPI devices.
The following options apply:
[/V]
Displays messages on the LCD during the installation.
3) CDFS (IFS)
IFS=[drive:][path]CDFS.IFS [Options]
This is the ISO9660/HSG file system for OS/2. All CD data
discs are recorded with this file format.
The following options apply:
[/C:n]
Indicates how many 64K segments to use for the sector cache.
Default is n=2, two 64K segments.
[/M:n]
Indicates the maximum number of file sectors to be read at a
time. Default is n=8, 8 sectors.
[/V]
Displays messages on the LCD during the installation.
[/Q]
Does not display messages on the LCD during the installation.