Avago Technologies LSI20160 - Manual (Page 174)

7-14 OS/2 Device Driver Installation
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/SYNCH_OFFSET
or
/SO Sets the maximum synchronous offset to negotiate with a particular device. The
allowable values for this setting are 0 to the maximum synchronous offset
supported by the specified adapter. The LSI Logic controller chips support
offsets up to 62. Refer to your host adapter user’s guide for information on the
maximum offset supported by your host adapter. If 0 (zero) is specified for the
synchronous offset value, then synchronous transfers are turned off for any
specified device.
The value set by this option only defines the maximum offset that is negotiated.
The resulting rate also depends on the device capability. The default value is the
maximum offset that is supported by a particular host adapter.
Syntax: /SYNCH_OFFSET = n<hba[:id]>[,n<hba[:id]>]*
where: n = 0 is the maximum synchronous offset for the adapter.
To change the synchronous offset to 6 for ID 3 on host adapter 0, the line in the
CONFIG.SYS file that loads SYM8XX.ADD should look like this:
BASEDEV=SYM8XX.ADD /SYNCH_OFFSET=6<0:3>
or
BASEDEV=SYM8XX.ADD /SO=6<0:3>
/TIMEOUT
or
/T Sets a timeout value to detect certain errors. When the driver issues a command
to a SCSI device, a timer is started. If the timer expires before the command
completes, the driver assumes that something has gone wrong with the device,
and takes steps to recover. The default value for this is 10 seconds. If you set
the value to be less than the system has allocated for a particular device, your
value is ignored. To turn off the timeout mechanism for a particular device, set
the value to 0 (zero).
Syntax: /TIMEOUT = n<hba[:id]>[,n<hba[:id]>]*
where: n = timeout value in seconds for device, n = (0..65535), 0 = infinite.
To extend the timeout to 60 seconds on a particularly slow device at ID 3 on host
adapter 0, the line in the
CONFIG.SYS file that loads SYM8XX.ADD should look like
this:
BASEDEV=SYM8XX.ADD /TIMEOUT=60<0:3>
or
BASEDEV=SYM8XX.ADD /T=60<0:3>
Table 7.1 OS/2 Command Line Options (Cont.)
Option Name Description