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Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue

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"Hans-Peter Diettrich"  wrote in message 
news:e1qqjiF6cpqU3@mid.individual.net...

> P E Schoen schrieb:

>> You may have already "left the building" at this point, unless you find 
>> this sort of discussion interesting. I have been involved in the 
>> measurement of power line frequency current and voltage signals for a 
>> LONG time, close to 40 years. Technology has changed since then, from 
>> mostly analog methods, then ADCs with early microprocessors like the 
>> 8085 and Z80, then signal processing boards with MSDOS, and now PICs and 
>> DSPs with Windows 10 or other OS.

> Currently I see similar (but hobbyist) projects in the Arduino forum. I 
> never tried real time programming on Win32/64, nor did I use COM port 
> components with Delphi. In the early PC days I did some data acquisition 
> using GW-Basic, later with BCB on Win3. I'd no more try to make my hands 
> dirty with real time programs for Windows, and in detail not with Delphi, 
> be some old reliable (up to D7) or uncomfortable and bloated new (RAD 
> Studio) versions. It's interesting to hear that you still are in business 
> :-)

Yes, I'm still in business, although at age 67 I've been semi-retired for 
about 2 years. I still support my Ortmaster products, including the original 
ORTM-1 and ORTM-2 that use MSDOS and the LPT parallel port to interface to 
the data acquisition device I designed around 1994 and produced until about 
2004 when I designed the first ORTM-3 (serial interface) and later the 
ORTM-4 (USB interface). Some customers still have and use the ORTM-2 but it 
is becoming more difficult for them to find working computers with MSDOS (or 
Win95) and native parallel ports. That's good for me, because I offer the 
only viable upgrade option for modern Windows machines.

I have considered upgrading to a newer version of Delphi. I have heard that 
the even numbered releases (D4 and D6) were buggy and their odd-numbered 
successors (D5 and D7) were much better. I found some Delphi Enterprise 8 
products on eBay for under $200 and CodeGear Delphi 2007 Enterprise for 
$430. Embarcadero does not offer an upgrade deal from D4, and their lowest 
level (Pro) version that offers database support is $1405.
https://www.embarcadero.com/app-development-tools-store/delphi

Perhaps even better is the open source Free Pascal and the Lazarus IDE that 
has a look and feel very similar to the Borland Delphi IDE that I am used to 
with D4-Pro.
http://wiki.freepascal.org/Lazarus_Documentation
https://www.youtube.com/playlist?list=PLB24C56953A79987A

Thanks for the information and discussion.

Paul 

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Delphi D4: using pointers to transfer data from COMM queue to circular queue "P E Schoen" <paul@pstech-inc.com> - 2016-08-19 02:19 -0400
  Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue "P E Schoen" <paul@pstech-inc.com> - 2016-08-19 03:58 -0400
    Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue "P E Schoen" <paul@pstech-inc.com> - 2016-08-19 04:42 -0400
      Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2016-08-19 12:34 +0200
    Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2016-08-19 12:30 +0200
      Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue "P E Schoen" <paul@pstech-inc.com> - 2016-08-19 20:54 -0400
        Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2016-08-20 12:43 +0200
          Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue "P E Schoen" <paul@pstech-inc.com> - 2016-08-20 19:15 -0400
            Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2016-08-21 12:50 +0200
              Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue "P E Schoen" <paul@pstech-inc.com> - 2016-08-22 07:12 -0400
  Re: Delphi D4: using pointers to transfer data from COMM queue to circular queue Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2016-08-19 12:27 +0200

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