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function string ReadComPort (
integer port,integer amount)
Description:
reads specified amount of characters from com port
Parameters:
port internal number of port
amount amount of bytes 
global
function Integer  ReplyInPOSNETBuffer(var string replystr)
begin
  Integer noErr;
  
  replystr = replystr & ReadComPort(0,255-len(replystr));
  ReplyInPOSNETBuffer = noErr;
  return;
end;
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