User`s guide

SET MU
(MU)
Sets the MU magtape handler (TMSCP magtape devices).
Format
SET MU condition
Condition
CSR=n
Modifies the MU device handler to use n as the CSR address for the first
controller. The valid range for n is 160000 to 177570
8
. This option enables
you to set a special CSR value in the device handler itself without having to
modify and reassemble the handler source code.
RETRY=n
Specifies n as the number of times MU attempts to recover from an error. The
value n must be an integer in the range 1–127. The default value for n is 8.
[NO]SUCCES
(Valid only with error-logging support) SUCCES, the default, modifies the MU
handler to log successful I/O transfers as well as errors when the Error Logger
is running.
NOSUCCES, the default, modifies the MU handler to not log successful I/O
transfers as well as errors when the Error Logger is running.
VECTOR=n
Modifies the MU device handler to use n as the vector for the first controller.
The valid range for n is 100 to 474
8
. This option enables you to set a special
vector value in the device handler without having to modify and reassemble the
handler source code.
RT–11 Command Descriptions 255