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- Program Set_To_Box;
-
- Type
- BIOS_Call = Record
- AX, BX, CX, DX, BP, SI, DS, ES, Flags : Integer;
- End;
-
- XFer_Area = Record
- Case Boolean of
- True : (Lo, Hi : Byte);
- False : (I : Integer);
-
- End;
-
- Var BIOS_Rec : BIOS_Call;
- XFer_Rec : XFer_Area;
- Upper, Lower : Byte;
- Ch : Char;
- I : Integer;
- Done : Boolean;
-
- Procedure Doittoit;
- Begin
- Xfer_Rec.Lo := 0;
- XFer_Rec.Hi := 1;
- BIOS_Rec.AX := XFer_Rec.I;
- XFer_Rec.Lo := Upper;
- XFer_Rec.Hi := Lower;
- BIOS_Rec.CX := XFer_Rec.I;
- Intr(16,BIOS_Rec);
- End;
-
- Procedure Menu;
- Begin
- ClrSCR;
- Writeln('1 = Top half Box');
- Writeln(' ');
- Writeln('2 = Bottom half Box');
- Writeln(' ');
- Writeln('3 = Full Box');
- Writeln(' ');
- End;
-
- Begin
- Done := False;
- Repeat
- Menu;
- Read(Kbd,Ch);
- I := Ord(Ch) - 48;
-
-
- Case I of
- 1 : Begin
- Upper := 7;
- Lower := 0;
- Doittoit;
- Halt;
- End;
- 2 : Begin Upper := 13; Lower := 7; Doittoit; Halt; End;
- 3 : Begin Upper := 13; Lower := 0; Doittoit; Halt; End;
- End;
- Until Done;
- End.
-