Pascal III: Changing text modes

• Last Modified: November 30, 1984
• Article: TA44846
• Old Article: 628

The Write and Writeln procedures are unable to send the necessary control
sequences to change the text mode to 40 columns black and white; use the
Unitwrite procedure instead.  The correct syntax is:
 
        Program Demo;
        Var ans :String;
 
        Procedure Control (number:integer);
        Var tryit :CHAR;
        Begin
           tryit := CHR (number);
           Unitwrite (1, tryit, 1, , 12);
        End;
 
        Begin
           Control (16);
           Control (0);
           Readln (ANS);
        End.