Did the HP-65 record data?
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03-23-2017, 02:22 PM
(This post was last modified: 03-23-2017 04:10 PM by SlideRule.)
Post: #15
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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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