2.3.4.10 Display Last Response Time ($R)

The Display Last Response Time writes the value of the last response to the screen. It works in any video mode, and writes the value at the current cursor position (and, in the case of the graphics modes, with the current attributes).

Name:

Display Last Response Time

Class:

Display Text

Code:

$R

Syntax:

$R

System:

Displays the last response time on the screen.

Requires:

This command will work in any video mode.

History:

Before Cogsys 3, $R did not work in graphics modes.

Test Files:

`DRSP_T01.IN'

tests basic operation

Examples:

input

Press the spacebar.#R You took $R milliseconds.

cogsys

Writes `Press the spacebar.'

subject

Press the spacebar after 100 ms.

output

` 100' written to output.

cogsys

`You took 100 milliseconds' displayed.