Omega OMB-PER-488/W95, User Manual

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Personal488 User's Manual For Windows 95 and Windows NT API Command Reference 107
•
The
ByteIn
(
.byteIn
) indicator is set when the I/O adapter has received a byte that can be read by
an
Enter
command. The
ByteOut
(
.byteOut
) indicator is set when the I/O adapter is ready to
output data. The
Service Request
field (
.SRQ
), as an active controller, reflects the IEEE 488 bus
SRQ
line signal. As a peripheral, this status reflects the
rsv
bit that can be set by the
Request
command and is cleared when the Driver488 is Serial Polled. For more details, refer to the
SPoll
command in this chapter.
•
The
Triggered
(
.triggered
) and
Cleared
(
.cleared
) indicators are set when, as a Peripheral,
Driver488 is triggered or cleared. These two indicators are cleared when
Status
is read. The
Triggered and Cleared indicators are not updated while asynchronous transfers are in progress.
The
Transfer in Progress
(
.transfer
) indicator signifies an asynchronous transfer in progress.