打印机检测程序

重庆 莫负民
1992-09-18

        Program Chykprint;
        Function PR:Boolean;
        Type RS=Record
        AX,BX,CD,DX,BP,DI,DS,ES,FIAGS:Integer;
        End;
        Var Regs:RS;
        Begin
        PR:=False;FillChar (Regs,SizeOF (Regs),00);
        With Regs Do begin AX:=$0200;DX:=0;end;
        Intr ($17,Regs);
        if (Regs.AX and $4000)=0 then begin
        if (Regs.AX and $4000)<>0 then PR:=True;
        if (Regs.AX and $4000)=0 then PR:=False;
        end End;{of Function PR}
        Begin
        Hires;HiresCoilor(3);
        If (Not PR) Then begin
        Write(^G^G,^M^J，`请开打印机!');
        Repeat Until PR
        end
        End
 
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