Did the HP65 record data?

03232017, 01:58 PM
(This post was last modified: 03232017 02:05 PM by Dieter.)
Post: #14




RE: Did the HP65 record data?
(03222017 04:34 PM)Willy R. Kunz Wrote: BTW, the "67/97 program with a more accurate approximation where the constants are intended to be stored on a data card" Dieter mentioned above may now be downloaded for RPN67/97 here. (Scroll down to the Math section.) As already mentioned in the thread with that program: the RPN67 version contains two data sets for two slightly different rational approximations. However, the provided program version will work correctly only with the first, original data set that is stored in the primary registers! Do not use the alternate set with that program! Willy, please update your RPN67 program and data cards. There are two options: (1) Leave the program as it is and remove the second coefficient set from the data card. (2) Preferred method: Only use the second, slightly improved coefficient set and (!) apply two changes to the program: (2a) Change the constant 1,38 in line 033 ff to 1,42 (2b) Change the constant 5 in line 027 to 4,68. Users that already have downloaded the RPN67 version simply should not use the coefficient set in the secondary registers. If you want to use the optimized approximation, read the data card, do a CLREG and P<>S to delete the first and activate the second coefficient set, and finally write a new data card. Then apply the mentioned changes to the program and save the corrected result to a new program card. At least unless Willy provides a corrected version. Dieter 

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