Makes console I/O redirectable.
call X"A7" using function-code parameter
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. |
function-code | Value 18. | ||||
parameter | Action to perform:
|
None
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.