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HP Forum Archive 09

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HP-41 Math Pac Part Numbers and such
Message #1 Posted by Chris Catotti (Florida) on 16 Sept 2002, 10:24 a.m.

A friend noticed my Math Pacs had different HP Part Numbers. I Have all four versions. I assume there are minor software differences, but I have not taken the time to verify. The first line is how they CATalog 2 on an HP-41. The second line is the white-ink HP Part Number on the module. The last line is the date code stamped into the module case.

MATH 1A
HP 00041-15003
Date Code 1953

MATH 1B
HP 00041-14023
Date Code 2134

MATH 1C
HP 5061-5261
Date Code 8535

-MATH 1D
HP 5061-7287
Date Code 8939

Interesting notes:

MATH 1B does not show up in a CAT 2 on a 41CX Machine, the other three do. Why?

-MATH 1D is part of the MATH/STAT Module and also has -STAT 1B included in the module.

The date code on the MATH 1A, 1953, would mean 1979 Week 53. Dec 31 1979 was a Monday. Was it made on that Monday only?

      
HP-41 Math Pac Part Numbers and such
Message #2 Posted by Emmanuel on 16 Sept 2002, 12:51 p.m.,
in response to message #1 by Chris Catotti (Florida)

My MATH modules:

MATH 1A HP 00041-14002 Date Code 2038

MATH 1B HP 00041-14023 Date Code 2202

MATH 1C HP 5061-5261 Date Code 8416

-MATH 1D HP 5061-7287 Date Code 8939

MCode listing of each ROM has different version and may be the function "Math 1B" isn't adressed in the FAT. Could be an explanation for the the fact that "Math 1b" doesn't show up on a 41CX. To be continued...

            
Re: HP-41 Math Pac Part Numbers and such
Message #3 Posted by Nabuchodonosor on 17 Sept 2002, 3:54 a.m.,
in response to message #2 by Emmanuel

I remember that my HP math module had a bug in the code and an addendum on a card said to copy the program in ram and to change a line of code .... I remember that it was a line with a flag test to change with the flag test and reset flag command ..... FC? with FC?C or FS? with FS?C

My math module is :

MATH 1A HP 00041-14002 Made in Singapore Date code 2057

New versions may have fixed this minor bug !!!!!

Nabuchodonosor, King of Babylone..... and HP user.

                  
Re: HP-41 Math Pac Part Numbers and such
Message #4 Posted by Nabuchodonosor on 18 Sept 2002, 10:44 a.m.,
in response to message #3 by Nabuchodonosor

Hello all,

Well, I found this famous addendum (I notice that nobody is interested by this .....).

This one explains that you have to change the line #160 of the FOUR program (program for the Fourrier's serials) from :

160 FS? 02

to :

160 FS?C 02

May it be possible for all people having such a module to verify the content of the 160th line of the FOUR program on their MATH module ?

Of course, if you have not something more important to do.

By the way, is this addendum a vintage for collectors ?

Nabuchodonosor, King of Babylone..... and proudly HP user.

                        
Re: HP-41 Math Pac Part Numbers and such
Message #5 Posted by Bruno Cavallini on 19 Sept 2002, 6:41 a.m.,
in response to message #4 by Nabuchodonosor

Hello,

I am not a user of the FOUR program, but ... I have a MATH/STAT (ref. 5061-7287, year 1985, date code 8728) for which the line 160 of the program FOUR reads RCL00 ! In fact the context is the following :

. . 157 * 158 PI 159 * 160 RCL 00 161 * 162 RCL 25 163 / 164 1 165 FS?C 02 (finally !??) 166 XEQ 08 167 P-R 168 RCL IND 21 . .

It seems the program has been altered more than once by HP people !

Bruno

                              
Re: HP-41 Math Pac Part Numbers and such
Message #6 Posted by Nabuchodonosor on 19 Sept 2002, 10:53 a.m.,
in response to message #5 by Bruno Cavallini

Next step is to dump all the programs of this @#$) module.

It's a good job for Nabuchon..... ..... ... .

Signed :

Nabuchodonosor, King of Babylone..... and proudly HP user.

      
Re: HP-41 Math Pac Part Numbers and such
Message #7 Posted by Johnny on 18 Sept 2002, 8:34 a.m.,
in response to message #1 by Chris Catotti (Florida)

Unless I remember wrong, the CX only shows entries that are 7 letters or more in CAT 2. The assumption is that these "functions" are the module name, since you cannot execute them.


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