The Museum of HP Calculators

HP Forum Archive 14

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HP41 editor
Message #1 Posted by Fulcrum on 7 Apr 2004, 5:05 p.m.

Hello, ca nanyone tell me whats the actual utility ( i mean in the daily use or programming) of the text editor in the hp41cx, and how can one edit similarly in a hp41cv that lacks of it? Thank you

Re: HP41 editor
Message #2 Posted by Jim Creybohm on 7 Apr 2004, 7:00 p.m.,
in response to message #1 by Fulcrum

I'm not sure if I understand this correctly, however...

For programming, the editor is the keyboard. You use the functions of the keys to insert steps into a program. The Clx key works to delete, and this is the same in the C, CV, and the CX. There is no specific editor per se.

For text editting, on the CX only I believe (C/CV w/ extended functions/memory? not sure) enter the name of the text file into the Alpha register and then XEQ [Alpha] ED [Alpha]. If you don't have a file in the extended memory, you will need to first create one using CRFLAS. (Name of file in Alpha reg, size in X reg, and then XEQ [alpha] CRFLAS [alpha].

there is a lot of excellent information on the museum's CD's and if you are looking for manuals, that would be an excellent place to start. You can also check over on another website (that I can't name here, honestly) for additional information. In addition, there are a LOT of knowledgeable individuals here who can fill in the rather large gaps I probably have left.


Re: HP41 editor
Message #3 Posted by Garth Wilson on 7 Apr 2004, 7:07 p.m.,
in response to message #1 by Fulcrum

I've used it for several things. Long text strings for applications that use a printer are quite impractical without the text files and editor. I also have a "daytimer" program in the 41cx. When I turn the calculator on for any reason, the program auto-executes and checks the DAYTMR text file to see if there's anything coming up that I need to be reminded about. If there is, it gives two very short beeps (with synthetic programming) and shows me what's on the schedule. Another use is the phone directory, with a program that does the search. The slow speed makes it impractical to have really long lists, but it _is_ useful. I use a NOTES text file to jot very short notes if I don't have note paper with me, or if I want to keep it there for longer than I can keep track of a little paper. I have the ZENROM but I haven't done any assembly-language programming. I expect the source code for it would need to be in a text file. There are probably a thousand other uses for the text editor too. When I first started getting into machine-language programming for another processor and bought an RS-232 EPROM programmer in the mid-80's, I did the assembly by hand (as many beginners start), and entered the machine-language code into the 41cx, and used it to control the EPROM programmer. I don't think there's any way to do all this on a cv.

Re: HP41 editor
Message #4 Posted by Miki Mihajlovic on 7 Apr 2004, 9:43 p.m.,
in response to message #3 by Garth Wilson

There is a program called "TE" that emulates ED on 41C/CV. Its listing can be found in the book: HP-41 Extended Functions Made Easy by Keith Jarett. The program was written by Erik Christensen.


Edited: 8 Apr 2004, 12:03 a.m.

Re: HP41 editor
Message #5 Posted by Fulcrum on 8 Apr 2004, 3:35 a.m.,
in response to message #4 by Miki Mihajlovic

Hello can you send me the code of that program to Thank you

"Extended Functions Made Easy" Book
Message #6 Posted by Karl Schneider on 9 Apr 2004, 4:20 a.m.,
in response to message #5 by Fulcrum

"Fulcrum" --

An optical scan of the entire book in Adobe Acrobat format(PDF) is contained on Volume 3 of the CD-ROM set, or the DVD-ROM, available for purchase at a nominal price from this MoHPC web site.

-- Karl S.

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