PSI BOX PLUS+ Reference
Control Functions
MLA.
Sends My Listen Address.
______
_______________________
Purpose.
The Listen Address of the PSI BOX device is sent to
__________
the bus.
The MLA command is used to tell all the bus devices that
the PSI BOX controller is a listener in the next data transfer
sequence.
Any data sent by the talker will be received by the PSI
BOX. Any number of listeners can be listening simultaneously to
one talker.
The PSI BOX asserts ATN and becomes the active
controller, then the listen address of the PSI BOX is sent over
the IEEE bus. After the command has been sent the ATN
remains true, PSI BOX is the active controller.
The MLA command is usually used when to initiate your own
data exchange routines.
Format.
MLA
_________
Params.
None.
_________
Returns.
None.
__________
Example.
________
_
BUS MLA
Bus Activity.
___________
_
assert ATN if not already so
LAG 0 the default listen address of the PSI BOX
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Chapter 8
