X"A7" function 18

Makes console I/O redirectable.

Syntax:
call X"A7" using function-code
                 parameter
Parameters:
Using call prototype (see Library Routines - Key) Picture (32-bit systems)
function-code cblt-x1-compx pic x comp-x.
parameter cblt-x1-compx pic x comp-x.
On Entry:
function-code Value 18.
parameter Action to perform:
0 Disable DOS-style console I/O
1 Enable DOS-style console I/O
On Exit:

None

Comments:

Normally the run-time system uses the BIOS to read the keyboard, and writes direct to the video map for all displays. This routine makes the run-time system use operating system functions instead. This means the operator can use the operating system facilities for re-directing keyboard input and screen output.

See Also: