HP 8920B Programmer's Manual page 282

Chapter 5, Advanced Operations
Status Reporting
Output Queue Group
Figure 10 Output Queue Group
282
The Output Queue Group is a specific implementation of the status queue model
described in
"Status Queue Model" on page 270
defined by the IEEE 488.2-1987 Standard to be a first in, first out (FIFO) queue.
The Output Queue Group includes a FIFO queue and a Message Available
(MAV) Summary Message. Refer to the
for an overview of status queue operation.
on page 260
structure of the Output Queue Group.
Message Available ( MAV )
(to bit 4 of Status Byte Register)
Queue Empty = "0"
Queue Not - Empty = "1"
. The Output Queue queue type is
"Status Reporting Structure Overview"
Last Data Byte Entered
Next Data Byte Entered
First Data Byte Entered
Output Queue
shows the
Figure 10
Last Data Byte
to be Read
First Data Byte
to be Read