/z
This option sets all Group 1 options, plus the
/qx
Group 2 option, to their
default values. This convenient shortcut is much faster than changing
each Group 1 option individually. Entering
/z
on the command line is
equivalent to entering these default settings:
Default
Value
/c-
Allow SCSI target devices to disconnect
/y-
Enable SCSI parity checking
/u
Enable synchronous negotiation
/h7
Set 486MIS SCSI port ID to 7
/q11
Set interrupt request channel to 11
After restoring the default values with
/z
, you can add customized Group
1 options on the same command line. For example,
/z /u-
sets the
defaults and then disables synchronous negotiation.
Group 2 Command Line Options
The meaning of each Group 2 option is as follows:
/b and /b-
The
/b
option tells
aspi2dos
to wait 250 milliseconds when it receives a
busy status from a SCSI target device and then try to access the device
again. It keeps trying until the SCSI device becomes available. The
/b-
option tells
aspi2dos
to notify the program that called it that it received a
busy status from the target device.
aspi2dos does not
try
to access the
device again unless told to do so by the calling program. If neither option
is specified, the default setting is
/b-
(notify the calling program and do
not try to access the device again).
For example, a tape backup program may stop working or hang because
aspi2dos
tried to access the device while it was rewinding, received no
response, and did not try again. To solve the problem, add
/b
to the
config.sys
, aspi2dos
will then keep trying to access the device until it
succeeds. If you enter the
/b
option,
do not
also enter the
/b-
option, and
vice-versa.
486MIS System Board User's Manual Page 39
