[DUG] Controlling PC Hardware Ports

[Colin/Mina]

SignatureThanks, but I forgot to mention that I need sub-millisecond accuracy hence wanting to use the 'scope.

Probably rules out using a standard Coms driver too.

Cheers

   Colin 
  ----- Original Message ----- 
  From: Rohit Gupta 
  To: NZ Borland Developers Group - Delphi List 
  Sent: Friday, October 10, 2008 3:53 PM
  Subject: Re: [DUG] Controlling PC Hardware Ports


  The other thing to do is to log the timing (current time) to a log file 

  Colin/Mina wrote: 
    Hi,

      I want to monitor some code to ensure that I have some timing correct. I was hoping to hook my oscilloscope to a readily available electrical signal (Such as Serial Port RTS) and to add instructions in my code to set and clear the appropriate modem port.

      Unfortunately the old Turbo Pascal instructions that allowed this, eg 
                    Port[$2FC] := 2)                // Set b2 of Modem Register and 
                    Port[$2FC] := NOT 2)        // Clear b2 of Modem Register 

         but these don't appear to be available in Delphi (not in D5 anyway).

      Any solutions please?

    Thanks

         Colin


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  Rohit Gupta
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  Technical Manager
  Computer Fanatics Limited

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