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ASUS P2B-D2 User’s Manual 115
IBM OS/2
General Unit Parameters:
• /I -- Ignore the specified adapter. This allows another driver to share the adapters
that the ADD would normally use.
• /DM -- Enable DASD manager support (DEFAULT). This parameter allows
OS2DASD.DMD to control the specified target(s) if they are identified as DASD
(hard disk) devices.
• /!DM -- Disable DASD manager support. This parameter prevents
OS2DASD.DMD from controlling the specified target(s).
• /SM -- Enable SCSI manager support (DEFAULT). This parameter allows
OS2SCSI.DMD to control the specified target(s) if they are identified as NON-
DASD SCSI devices. All SCSI hard drives will be controlled by
OS2DASD.DMD.
• /!SM -- Disable SCSI manager support. This parameter prevents OS2SCSI.DMD
from controlling the specified target(s).
• /TAG -- Specifies the maximum number of tagged commands for all target de-
vices on the host adapter (1-16).A value of 1 disables tagged queuing.The maxi-
mum number allowed is 16.(The default is 8.)
• /UR -- Enables reporting of under runs (DEFAULT).
• /!UR -- Disables reporting of under runs.
Configuration Examples:
Example 1:
Suppose that you had a removable hard drive as target 3 and you wanted to control
the hard drive with an ASPI application and driver. Normally OS2DASD will allo-
cate this device, treat it as a large floppy and prevent you from sending any SCSI
commands via ASPI.
The following command line will prevent OS2DASD.DMD from accessing the tar-
get and still allow OS2SCSI.DMD and OS2ASPI.DMD to share access to it.
BASEDEV=AIC78U2.ADD /A:0 /!DM:3
Example 2:
Suppose that you had a multi-disk CD-ROM as target 4 on host adapter 0 and two
DASD devices as targets 1 and 5 on host adapter 1. The following command line
will prevent OS2SCSI.DMD from accessing the CD-ROM and prevent
OS2DASD.DMD from controlling the DASD devices. The driver will also search
for multiple LUNs on all host adapters.
BASEDEV=AIC7870.ADD /ET /A:0 /!SM:4 /A:1 /!DM:1,5
IBM OS/2
B. AIC-7890 Driver