The Vector Program Control (see the figure below) is a high-speed Event Detection with Real-Time Response to those events unit controlling the program counter and the GX5280 state. The inputs to the Vector Program Control are:
● The 16-bit external events input lines or X register
● Trigger or Pause signals as processed by the Trigger/Pause logic.
● Software command control: Arm, Trigger, Pause, Halt, Step and Reset.
● External input lines: External Trigger, External Pause and External Jump.
● Predefined program commands to be processed in run time.

GX5280 Vector Program Control