Parts Of The Cpu Sweep; Figure 40: Major Phases Of A Typical Cpu Sweep - GE PACSystems RX7i Reference Manual

4.1.1 Parts of the CPU Sweep

There are seven major phases in a typical CPU sweep as shown in the following figure.
GFK-2222AD
Housekeeping
Start-of-Sweep
input scan
Application Program
Task Execution
(Logicwindow)
WINDOW)
Output Scan
window
scheduled
Controller
Communications
Window
Comm
window
scheduled
Backplane
Communications
Window
Background
scheduled
Background task
Window
Start next sweep
SWEEP

Figure 40: Major Phases of a Typical CPU Sweep

April 2018
Prog
no
?
yes
no
?
yes
no
task
?
yes
Chapter 4. CPU Operation
141