Buggy behavior with HP-80 y^x?

[AndiGer]

Tried on my HP-80 .... display flickers during calculations.

I think this is due to complex financial calculations. Especially if you resolve to i(nterest) as this is calculated as iteration and can last several seconds - the more digits you set in the display the more iterations. This way you see the calculator is still busy ... (Same on HP-81 - the desktop equivalent.)

Remember (I read somewhere) when you do financial calculations on the HP-80/HP-81 you must enter the values from left to right.
E.g. 5 n, 500 PMT, 3000 FV. Then resolve to i what will give 9.13 to 2 decimals.

Andi