[DUG] Controlling PC Hardware Ports

[Gary T. Benner]

[Reply]

Colin,

You can use a standard serial port component ( eg. Turbopower, free on Sourceforge ) and use that to toggle the serial port RTS/CTS line.

cheers

Gary

At 15:37 on 10/10/2008 you wrote 
>To  : delphi at delphi.org.nz
>CC  : >From: Colin/Mina, colmin at ihug.co.nz
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>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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