User`s guide

SET DU
(DU)
Sets the DU device handler (MSCP disks and diskettes).
Format
SET DU condition
Condition
CSR=n
Modifies the DU 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 the number of times the device handler attempts to recover from an I/O
error. The value n must be an integer in the range 1 through 127. The default
value for n is 8.
[NO]SUCCES
(Valid only with error-logging support) SUCCES, the default, logs successful I/O
transfers as well as errors when running the Error Logger. NOSUCCES logs
only I/O errors.
VECTOR=n
Uses n as the vector address for the first port of the DU MSCP controller. The
valid range for n is 100
8
to 474
8
.
226 RT–11 Command Descriptions