program LoadNetPrinter;

type
    pString80 = ^String80;
    String80  = string[80];

    pString20 = ^String20;
    String20  = string[20];

    stringtable = array[1..3] of pString20;

var i: integer;

function pOSdevNam(u: integer): pString80; external;

function LoadDriver(drvr: integer): integer;
    var p: pString80;  pm: ^boolean;
        s1,s2,s3: string20; st: stringtable;
    begin
    st[1] := @s1; st[2] := @s2; st[3] := @s3;
    case drvr of
       0: begin
          p := pOSdevNam (6);
          pm := pointer(ord4(p)-1); {point at mount flag}
          if pm^ then begin  {don't load if mounted}
             LoadDriver := 0;
             exit(LoadDriver);
             end;
          p^ := ''; s1 := '!DRV.EPRNT';
          s2 := 'PRINTER'; s3 := '6';
          end;
       1: begin
          p := pOSdevNam (3); p^ := '';
          s1 := '!DRV.SPOOL'; s2 := 'SPOOLER';
          s3 := '3';
          end;
       end;
    LoadDriver := call ('!ASSIGN',input,output,st,3);
    end;

begin
if LoadDriver(0) <> 0 then begin
   writeln('Cannot load printer driver.');
   exit(LoadNetPrinter);
   end
else if LoadDriver(1) <> 0 then begin
        writeln('Cannot load spooler driver.');
        exit(LoadNetPrinter);
        end;
i := 3;
unitstatus(6,i,$82); i := ioresult; {attach eprnt to unit 3}
if i <> 0 then writeln('Failed to attach printer driver to spooler driver.');
end.