Figure 8: Status and Event Handling Process
When an event occurs, a signal is sent to the DESER (1). If that type of event is
enabled in the DESER (that is, if the bit for that event type is set to 1), the
appropriate bit in the SESR is set to one, and the event is recorded in the Event
Queue (2). If the corresponding bit in the ESER is also enabled (3), then the ESB
bit in the SBR is set to one (4).
When output is sent to the Output Queue, the MAV bit in the SBR is set to one
(5).
When a bit in the SBR is set to one and the corresponding bit in the SRER is
enabled (6), the MSS bit in the SBR is set to one and a service request is
generated (7).
Status and Events
TBS2000 Series Programmer 281
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