# System Parameters

'WI'= | Windows Instruction Count

## Description

(Windows/WindX Only)

Sets the number of instructions to be executed before passing control to the operating system.

#### Note:
The overall number of instructions between priority level switching is based on an exponential formula using the values of the 'WI' and 'QF' parameters. See 'Q_', 'Q^' and 'QF' system parameters, which control task priority.

## Default

'WI'=1000

## See Also

TCB( ) Return Task Information; i.e. TCB(91)