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/I:n
Enables interrupt sharing. If n=1, interrupt sharing is enabled. If n=0, interrupt
sharing is disabled. The default value is 0. Enable this parameter when the
IDE interrupt must be shared with another device. For example, a PS/2 9577
computer with IDE could share interrupt 14 with the IBM SCSI Adapter /A.
Using Microsoft CD-ROM Extensions
Microsoft CD-ROM Extensions (MSCDEX.EXE) is an executable program that works
in conjunction with the device driver (IBMIDECD.SYS) to allow your computer to
access CDs as if they were DOS-formatted disks. MSCDEX is specifically designed
to work with DOS and Windows.
CDSETUP automatically adds an MSCDEX statement to your AUTOEXEC.BAT file.
You can modify the default MSCDEX parameters to customize your installation. This
section explains the function of each parameter. A text editor can be used to modify
the MSCDEX statement in your AUTOEXEC.BAT file.
The following is the syntax of the MSCDEX.EXE entry in AUTOEXEC.BAT where
[drive:][path]MSCDEX.EXE specifies the location (drive and directory) of the
MSCDEX.EXE file.
[drive:][path]MSCDEX.EXE
/D:devicename [/M:n] [/E]
[/V] [/L:driveletter] [/K][/S]
(Do not truncate the actual device driver entry. Place the complete entry on one line
in the AUTOEXEC.BAT file.)
Use the following options to configure the device driver.
/D:devicename
Specifies the name of the CD-ROM drive (eight characters maximum). This
must be identical to the device name specified in the device driver in the
CONFIG.SYS file. For example:
C:\MSCDEX.EXE /D:IBMCD1
You might support multiple CD-ROM drives (of different types) by installing
each of their device drivers (naming them different names) and placing a
/D:devicename in the MSCDEX line for each drive. For example, if you
wanted to support an IBM IDE CD-ROM drive and an IBM SCSI CD-ROM
drive, your CONFIG.SYS file could have these statements:
DEVICE=C:\IBMIDECD.SYS /D:IDE_CD
DEVICE=C:\IBMCDROM.SYS /D:SCSI_CD
and your AUTOEXEC.BAT file would have this statement:
C:\MSCDEX /D:IDE_CD /D:SCSI_CD
/M:nn
Specifies the number of sector buffers for temporary storage of the most recent
CD data. For example, to specify 12 sector buffers, you would use:
C:\MSCDEX.EXE /D:IBMCD1 /M:12
Part 3: Appendixes 3-3