HP-29C: 98 Program Steps, So, why not an even 100?

[rprosperi]

(08-28-2019 07:27 PM)bshoring Wrote:  Bob in “N0-N20” are you referring to the 2 digit registers used for storing the number of cash flows?
HP-38 E/C & HP-12C have those.

Yes, exactly. In the 38C manual there are diagrams illustrating the various storage areas, and under "Financial Registers" it shows N, I , PV, PMT, FV and N0 - N20 (with the zero thru 20 shown as subscripts). But the text on p. 49 explains the CFj key stores the various entered cash flows into the normal R1-R9 and R.1-R.9 registers, so there really aren't dedicated CF registers as the diagrams imply.