PSI BOX PLUS+ Reference
Control Functions
EOS=.
Set End Of Sequence Character For Inputs.
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Purpose.
Sets or changes the End Of Sequence terminator for
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INPUTS from the IEEE bus.
This command is used to inform the PSI BOX of how the
IEEE device signals that it has sent all its data to the PSI BOX.
The EOS terminator can be just the EOI signal set true by
the IEEE device.
Or it can be any character in the range 00-255. The EOS byte
can be set to compare all 8 bits of the character read or just the
7 least significant bits.
Of course, regardless of the value of the EOS terminator
byte if a talker sets EOI true with a byte sent to the PSI BOX
then the PSI BOX knows that the sequence has ended.
Format.
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a) EOS=
;Bus inputs terminate only when EOI is
set true by the IEEE device.
This is the default setting.
b) EOS= character
;Bus inputs terminate only when the IEEE
device sends the character specified.
An 8 bit comparison is made.
c) EOS= character,8
;Bus inputs terminate only when the IEEE
device sends the character specified.
An 8 bit comparison is made.
d) EOS= character,7
;Bus inputs terminate only when the IEEE
device sends the character specified.
Only the bottom 7 bits of the data read
from the IEEE bus is compared to the
EOS character.
Params.
None, One or Two.
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Returns.
None.
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Chapter 8
