APS-7000 Programming Manual
140
MAV (Message Available) This is
set when there is data in the
Output Queue waiting to be read.
(ESB) Event Summary Bit. The
ESB is the summary bit for the
Standard Event Status Register
group.
MSS Bit
The MSS Bit is the summary of
the Status Byte Register and
Service Request register (bits 1-5,
7). This will be set to 1.
OPER (Operation Status Register)
OPER bit is the summary bit for
the Operation Status Register
Group.
Any bits set in the Status byte register acts as a
summary register for all the three other status
registers and indicates if there is a service request,
an error in the Error Queue or data in the Output
Queue. Reading the Status Byte register will reset
the register to 0.
Service Request
Enable Register
The Service Request Enable Register controls
which bits in the Status Byte Register are able to
generate service requests.
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