TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

MTIND. [MTAPE 101]
22.99 MTIND. [MTAPE 101]
FUNCTION
Initializes a channel for industry-compatible mode tape handling.
FILOP. to perform an MTIND. on an extended I/O channel.
Use
In industry-compatible mode, the monitor writes or reads 32 bits in 4
frames of a 9-track magnetic tape, ignoring the low-order 4 bits of
each PDP-10 word. MTIND. will set a default density to 1600 BPI, or
the highest density allowed on the drive.
The industry-compatible mode remains in effect until the channel is
released, or until you issue the MTDEC. monitor call for the channel.
CALLING SEQUENCE
MTIND.
return
channo,
In the calling sequence, the program supplies the channo, which is the
number of a channel initialized for a magtape device.
RETURN
The device associated with the given channel is initialized for
industry-compatible mode handling.
EXAMPLES
RELATED CALLS
MTIND. 10,
o
o
FILOP.
TAPOP.
COMMON PROGRAMMING ERRORS
Including an error return when none exists.
Forgetting to include a comma after the channel number.
22-250