Advantech PCA-6157, Руководство пользователя

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Chapter 5 SCSI Drive Installation 53
Using the /T=n Option
DOSCAM.SYS uses a time out mechanism to detect certain errors.
When DOSCAM SYS issues a command to a SCSI device, a timer
is started. If the timer expires before the command completes,
DOSCAM.SYS assumes that something has gone wrong with the
device, and takes steps to recover. The default value for this tune-
out is no time out (to accommodate slow devices such as scan-
ners). If this option is desired, the time out value must be specified
as an argument to DOSCAM.SYS in the CONFIG.SYS file. This
argument consists of a /T=n parameter, where n is the number of
seconds you want it to wait before timing out. For example, the
line in CONFIG.SYS that loads DOSCAM.SYS would look like
this:
DEVICE=C:<PATH>DOSCAM.SYS /T=4
/T is the time out option and 4 is the number of seconds you want
it to wait before timing out.
Using the /ASK Option
This option prompts the use at system boot-up whether to load
DOSCAM.SYS or not. For example, the line in CONFIG.SYS that
loads DOSCAM.SYS would look like this:
DEVICE=C:<PATH>DOSCAM.SYS /ASK
Troubleshooting
• THE COMPUTER LOCKS UP AND WILL NOT COMPLETE
BOOTING FROM A NON-SCSI HARD DISK DRIVE.
a. Refer to the drive manufacturer’s user manual.
• THE COMPUTER LOCKS UP AND WILL NOT COMPLETE
BOOTING FROM A SCSI HARD DISK DRIVE.
a. Is the SCSI BIOS seen during boot?
Note: If the SCSI BIOS is seen during boot, a banner similar
to the following will appear:
NCR SDMS (TM) v3.0 PCI BIOS, PCI Rev. 2.0
Copyright 1993 NCR Corporation
NCRPCI-3.04.00