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Did the HP-65 record data?
03-23-2017, 02:22 PM (This post was last modified: 03-23-2017 04:10 PM by SlideRule.)
Post: #15
RE: Did the HP-65 record data?
(03-22-2017 10:45 PM)teenix Wrote:  ... HP-65 is that R9 does not have a merged code, and this register is also used for various trig and comparison tests...

From the 65 Manual;

pg 59) Also notice the STO 9 and RCL 9 are not mergd. This serves as a helpful reminder that the HP-65 uses R9 to store intermediate results when using trigonometric functions, rectangular/polar conversions, or numerical comparison tests."
&
pg 84) The DSZ (decrement and skip on zero) key subtracts 1 from the contents of R8 and then tests for a non-zero value.

Although it is included in the merged key codes, R8 is also semi-reserved or serves a dual-role.

BEST!
SlideRule

edit: R8 vs R1 - thanks Don, one of those all to often senior moments.
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Messages In This Thread
RE: Did the HP-65 record data? - Dieter - 03-22-2017, 01:36 PM
RE: Did the HP-65 record data? - teenix - 03-22-2017, 10:45 PM
RE: Did the HP-65 record data? - SlideRule - 03-23-2017 02:22 PM
RE: Did the HP-65 record data? - SlideRule - 03-23-2017, 04:12 PM
RE: Did the HP-65 record data? - SlideRule - 03-22-2017, 02:00 PM
RE: Did the HP-65 record data? - Dieter - 03-23-2017, 01:58 PM
RE: Did the HP-65 record data? - Dieter - 03-23-2017, 07:35 PM
RE: Did the HP-65 record data? - Dieter - 03-22-2017, 08:13 PM
RE: Did the HP-65 record data? - Dieter - 03-22-2017, 08:16 PM
RE: Did the HP-65 record data? - Gene - 03-22-2017, 09:58 PM



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