User`s guide

SET MT
(MT)
Sets the MT magtape handler (TM11/TMA11/TS03/TE16 magtapes).
Format
SET MT condition
Condition
CSR=n
Uses n as the CSR address for the MT handler. The valid range for n is 160000
to 177570
8
. This option enables you to set a special CSR value in the device
handler without having to modify and reassemble the handler source code.
DEFALT=n
Sets defaults for 7- or 9-track magtape; n can be 7 or 9.
DENSE=n
Sets density for 7- or 9-track magtape; n can be 200, 556, 800, 807, or 809. The
default is 800 bpi (bits per inch).
NOTE
These SET command options apply to all units of
the magtape controller. Six-bit mode and core dump
mode are described in the RT–11 Device Handlers
Manual.
DUMP
Writes bytes to 7-track magtape at 800 bpi (bits per inch).
[NO]ODDPAR
ODDPAR, the default, sets parity to odd for 7- or 9-track magtape. Digital
recommends this setting.
NOODDPAR sets parity to even for 7- or 9-track magtape. Digital does
not recommend this setting for normal operation and provides it only for
compatibility with other systems.
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.
RT–11 Command Descriptions 253