The translated HP-67 program you're trying to load and

run is far from optimal, or even efficient. Your best best

would be to get one from the former "HP-41C User's Library",

or even better, to look for one in the old issues of the

PPC Journal, available in CD-ROM.

If you do have or can get an HP-71B with a Math ROM,

this is the "program" that will do what you want,

particularized for a 100th-degree polynomial:

10 DIM P(101) @ COMPLEX R(100) @ MAT INPUT P @ MAT R=PROOT(P) @ MAT DISP R

I quoted "program" because you could easily execute that

from the command line, no need to enter a program. As

written, it does the following:

DIM P(101) dimensions a 101-element vector to hold

the 101 coefficients

COMPLEX R(100) dimensions a 100-element complex vector

to hold the 100 complex roots

MAT INPUT P prompts the user for each element. The

user can enter elements one by one or

several at a time, and can enter numbers

or expressions, even using variables

and functions

MAT R=PROOT(P) computes all 100 complex roots

MAT DISP R displays all roots

To make it general, just ask for the degree N, and then

use DIM P(N+1) and COMPLEX R(N) instead.

That's it. Amazingly simple and powerful !