National Instruments AutoCode NI MATRIX Reference page 216

Chapter 8 AutoCode Sim Cdelay Scheduler
1
Notice that in the standard template, certain loops internal to a stage have been lifted to include two or three stages—for
example, stages D, E, and F.
2
Any DataStores driven by task outputs are written to during this cycle.
AutoCode Reference
triggers/enables have gone high are queued for execution. Then, in stage D,
ATR tasks whose output posting times have arrived and ANC tasks that
have just been queued for execution in stage C are marked for output
posting, which is stage E.
stage F (overwriting any previous values for that cycle). Finally, in stage G,
queued tasks are dispatched for execution.
Figure 8-3. Scheduler Pipeline Stages in the Standard AutoCode Scheduler
Given this flow, you now can explain why the delays are present for the
triggered and enabled subsystems. Take the case of the triggered subsystem
first. When the triggered task's trigger input is posted high at 0.6 sec, the
1, 2
Datastores are written from external inputs in
Reset DataStore
A
Writers to Low
Priority
Read External
B
Inputs
C Queue Tasks
Identify Outputs
D
to Post
Post Outputs
E
Write DataStores
F
from External
Inputs
G
Dispatch Tasks
8-6 ni.com