Texas Instruments 990 Operation Manual page 48

~-------
~
945255-9701
When one or more parameters are omitted, two or more field separators may occur in sequence.
The user must be sure that he includes the correct number of separators in a sequence; he should
be aware of how they are interpreted by the computer. Two strings of blanks run together will
be read as a single long string of blanks. A comma preceded or followed by a blank will be read
as two separators in sequence. It is suggested, therefore, that commas (without preceding or
following blanks) be used to set off omitted parameters.
In the examples of command statements, user-supplied data is underlined to distinguish it from
data printed by the monitor. The carriage returns that terminate command statements are not
shown in the examples.
3.4.2 ASSIGN LUNO (AL). The Assign LUNO command is used to establish the I/O devices
that will perform I/O under PX9MTP.
Syntax definition:
AL
{b . ..}
<luno>
{b . ..}
<device>
The command is terminated by a carriage return.
Parameters:
luno Logical unit number - number associated with the I/O device.
device Character string which is the name of a devIce.
The acceptable device names are as follows:
LOG 733 data terminal keyboard and printer.
DUM Dummy device. Input from 'DUM returns an end-of-file; output
to DUM is discarded.
CSI Left cassette drive on the 733 data terminal.
CS2 Right cassette drive on the 733 data terminal.
Default LUND assignments: If the AL command is not entered, a set of default values is used
for the PX9MTP LUNO assignments. These default LUNO assignments are:
LUNO
(Hexadecimal)
o
1-5
6
7
8
9-F
3-10
Device
LOG (cannot be changed)
DUM
LOG
CSI
CS2
DUM
Digital Systems Division