Measurement-computing Personal488 rev.3.0 For DOS & Windows 3.Xi Bedienungsanleitung Seite 368

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III. COMMAND REFERENCES - 15. Command References 15B. Driver488/SUB, W31, W95, & WNT
Personal488 Users Manual, Rev. 3.0 III-353
The
UnTalk
command unaddresses an external device that was addressed to Talk.
Wait
SYNTAX
int pascal Wait(DevHandleT devHandle);
devHandle
refers to either an interface or an external device. If
devHandle
is an
external device, the
Wait
command acts on the hardware interface to which
the external device is attached.
RETURNS
-1 if error
MODE
Any
BUS STATES
Determined by previous Enter or Output command.
SEE ALSO
Enter, Output, Buffered, Status
EXAMPLE
errorcode = Wait(ieee);
The
Wait
command causes Driver488 to wait until any asynchronous transfer has completed before
returning to the users program. It can be used to guarantee that the data has actually been received
before beginning to process it, or that it has been sent before overwriting the buffer. It is especially
useful with the
Enter
command, when a terminator has been specified. In that case, the amount that is
actually received is unknown, and so the users program must check with Driver488 to determine when
the transfer is done. Time out checking, if enabled, is performed while
Wait
ing.
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