HP Forum Archive 17

[ Return to Index | Top of Index ]

35s -- Indirect Branching or Manual Mistake? Message #1 Posted by Katie Wasserman on 29 July 2007, 5:48 p.m. There's a section in chapter 14 of the manual called "Indirectly Addressing Variables and Labels" that implies in several places that you can address program labels indirectly. For example: Quote: The function (I) or (J) uses the value in the variable I to [sic] J to determine which variable, label, or register to address. Aside from the typo, this reads to me like it is possible to address program labels indirectly, but I don't see how to do that. Am I missing something here? -Katie

Re: 35s -- Indirect Branching or Manual Mistake? Message #2 Posted by Valentin Albillo on 29 July 2007, 6:33 p.m., in response to message #1 by Katie Wasserman Hi, Katie: Katie posted: "Aside from the typo, this reads to me like it is possible to address program labels indirectly, but I don't see how to do that. Am I missing something here?" The term "label" in that sentence refers to the label used in SOLVE and INTEGRATE, which can be specified indirectly. But as for indirect GTO's or XEQ's , that's regrettably a big no-no, though something like 2.007 or -2.007 could have been used to indirectly specify GTO B007 or XEQ B007. This shortcoming, along with the lack of functions to extract the real/imaginary parts of complex numbers (REPT and IMPT in the HP-71B) or the components of a vector, is among the worst omissions in the HP35s instruction set. Further, there seems to be no function to obtain the conjugate of a complex value either (CONJ in the HP-71B). Best regards from V.

Re: 35s -- Indirect Branching or Manual Mistake? Message #3 Posted by Antonio Maschio (Italy) on 30 July 2007, 4:45 a.m., in response to message #2 by Valentin Albillo On the HP-32SII, if you have a program labelled "A", and you put 1 in the variable i, pressing XEQ (i) executes the "A" program. Wasn't this preserved on the newer 35s? (Actually I have no 35s yet to try, so I ask to those who have one.) -- Antonio

Re: 35s -- Indirect Branching or Manual Mistake? Message #4 Posted by Don Shepherd on 30 July 2007, 7:47 a.m., in response to message #3 by Antonio Maschio (Italy) No. XEQ wants a label and line number.

Re: 35s -- Indirect Branching or Manual Mistake? Message #5 Posted by Gene Wright on 30 July 2007, 8:54 a.m., in response to message #4 by Don Shepherd Manual mistake. In my 35s review, I note that the XEQ and GTO indirect instructions are not present.

Re: 35s -- Indirect Branching or Manual Mistake? Message #6 Posted by Antonio Maschio (Italy) on 30 July 2007, 9:00 a.m., in response to message #5 by Gene Wright So update the essay and tell us where and when! ;-) -- Antonio

[ Return to Index | Top of Index ]

Go back to the main exhibit hall