HP Forum Archive 17

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Conquer the World with HP-IL/71B/41CX Message #1 Posted by Egan Ford on 8 Sept 2007, 4:11 p.m. Inspired by the book Control the World with HP-IL I though I'd try something other than PC to calculator communications. I posted the following articles this afternoon. I hope you find them mildly entertaining. Explore the World with HP-IL/RS-232/71B + GPS Control the World with HP-IL/RS-232/41CX + X10 Edited: 8 Sept 2007, 8:09 p.m. after one or more responses were posted

Re: Conquer the World with HP-IL/71B/41CX Message #2 Posted by Raymond Del Tondo on 8 Sept 2007, 6:51 p.m., in response to message #1 by Egan Ford Very nice applications - My congratulations! BTW: The 2nd link is (somewhat) broken, there's a 'http//' too much. OT, but just came into my mind: On the Allschwil2006 meeting, I demonstrated a setup of an HP-41, an HP-71B, and an HP-48 connected together at the same time. The connection was made with a CMT Multicase, which includes an HP-IL RAM disc, an HP-IL LC display, and a battery-powered version of a 82164A compatible serial interface. Actually the essential part was the 82164A interface, the display was nice for the visual feedback, and the RAM disc allowed for tempaorary data storage. With the HP-71 in HP-IL device mode ('CONTROL OFF'), one could control the HP-IL side with the HP-41, and send and receive data from and to the HP-48, which was connected to the serial port. On the Allschwil meeting before, I also showed a special HP-IL interface made especially for the HP-48. With this interface and the associated control library on the HP-48, it is possible to access HP-IL mass storage devices, and, amongst other things, print to an HP-IL printer. The interface, made by W&W, is different from the HP made HP-IL-to-somewhere interfaces in the respect that the W&W interface is configured as the loop controller. This way the HP-48, with this interface, can be seen as an HP-IL controller. Unfortunately I haven't found a way to turn off control on the interface so far, and in consequence you can't connect an HP-41 on the IL side, except if you set the HP-41 into MONITOR mode... Raymond

Re: Conquer the World with HP-IL/71B/41CX Message #3 Posted by Egan Ford on 8 Sept 2007, 8:17 p.m., in response to message #2 by Raymond Del Tondo Quote: Very nice applications - My congratulations! Thanks. Glad you liked them. Quote: BTW: The 2nd link is (somewhat) broken, there's a 'http//' too much. Link fixed. CMT Multicase. Very interesting. Google only produced one picture, do you know of any others? Thanks again.

Re: Conquer the World with HP-IL/71B/41CX Message #4 Posted by Raymond Del Tondo on 8 Sept 2007, 9:18 p.m., in response to message #3 by Egan Ford You have mail, at least if you still have your mail address from 2006;-)

Re: Conquer the World with HP-IL/71B/41CX Message #5 Posted by Howard Owen on 8 Sept 2007, 10:39 p.m., in response to message #1 by Egan Ford Those are two great articles, Egan! Back in the day, GPS was very expensive and rare, not to mention inaccurate. So a similar program using LORAN might have been the killer app for the HP71B, and history would followed a different (LORAN plotted) course. Have you tried doing the inner loop in Forth? You might get a little more time to do useful work that way. Thanks for the interesting and entertaining reading! Regards, Howard

Re: Conquer the World with HP-IL/71B/41CX Message #6 Posted by Egan Ford on 9 Sept 2007, 12:18 p.m., in response to message #5 by Howard Owen Quote: Have you tried doing the inner loop in Forth? You might get a little more time to do useful work that way. I considered it. Given than it is not very portable, application is limited. I guess I could track position jitter, or satellite position. Quote: Thanks for the interesting and entertaining reading! You are welcome.

Re: Conquer the World with HP-IL/71B/41CX Message #7 Posted by Geir Isene on 9 Sept 2007, 1:39 p.m., in response to message #1 by Egan Ford Now this is impressive. Both in content and form (you write very well). Thanks. I will copy this - my house was built by an electro-engineer, it has all sorts of possibilities :)

Re: Conquer the World with HP-IL/71B/41CX Message #8 Posted by Egan Ford on 10 Sept 2007, 1:32 a.m., in response to message #7 by Geir Isene Glad you found it of interest. Thanks for the feedback.

HP41 interfacing Message #9 Posted by Christoph Klug on 11 Sept 2007, 10:28 a.m., in response to message #1 by Egan Ford Dear Egan Ford Big congratulation for your HP41 interface application to real world by using RS232 and the X10 fire cracker. Nice to see that other HP41 enthusiasts create interface applications. Actual I am working on the new issue of the I/O-Board manual and the IL2000 system manual. This would be the first time I combine this two manuals inside one heavy book with over 600 pages about HP41 interfacing, data logger and measurement applications and so on… Furthermore HP41 / PC interfacing is included, handling ROM image pages and last not least some completely new published chapters. Hope the new print is available until autumn 2007. Best regards from Germany – Christoph Klug

Re: HP41 interfacing Message #10 Posted by Egan Ford on 11 Sept 2007, 8:16 p.m., in response to message #9 by Christoph Klug Quote: Big congratulation for your HP41 interface application to real world by using RS232 and the X10 fire cracker. Nice to see that other HP41 enthusiasts create interface applications. Thanks. I must emphasize that I without EMU41/HP-IL it would have never happened. The effort to develop directly on the 41CX is too great. Thanks, JF Garnier. Quote: Actual I am working on the new issue of the I/O-Board manual and the IL2000 system manual. This would be the first time I combine this two manuals inside one heavy book with over 600 pages about HP41 interfacing, data logger and measurement applications and so on… Furthermore HP41 / PC interfacing is included, handling ROM image pages and last not least some completely new published chapters. Hope the new print is available until autumn 2007. I look forward to reading it.

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