HP-92 Simulation Attempt

[teenix]

Slow proceedings, but more progress :-)

After research and some frustration, I'm pretty sure I've worked out the 2 formulas for the [PRICE] button. The solution is as printed in the manual but is dependant on how the input data is represented and it produces the same answers for the examples shown in both HP92 finance manuals.

The [YIELD] calculations are more complicated so still a way to go

cheers

Tony