X"B0" function 4

Syntax:

call X"B0" using function-code
                 parameter

Parameters:

  Using call prototype (see Key) Picture
function-code cblt-x1-compx pic x comp-x.
parameter cblt-x1-compx pic x comp-x.

On Entry:

function-code Value 4.
parameter Value 1.

On Exit:

None

Comments:

This routine disables keyboard interrupts for the rest of the application. It should be called before any subprograms are called.