Trapezoidal Rule for HP-67

[Dieter]

(09-03-2017 05:44 PM)Matt Agajanian Wrote:  My goof. After I posted this, I realised that it's the Romberg Integration program from 41's Advantage module I was referring to.

Now I'm even more confused. What exactly do you mean here?
Are we talking about the Trapezoidal method for discrete data points in the HP67 program mentioned in your first post?
Or is it the integration routine in the HP41 Advantage Pac? Or the Romberg program in the PPC-ROM?
What kind of program are you looking for, and for which calculator?

(09-03-2017 05:44 PM)Matt Agajanian Wrote:  But, I seem to recall that the Romberg application requires a certain other module to be in the 41 to function properly. Or did I misread something?

I think you did. The much more sophisticated integration program in the Advantage ROM does not need any special add-on (BTW, this is not a plain-vanilla Romberg algorithm). A classic Romberg program is part of the PPC-ROM ("IG"). Nothing special required here either. It just requires a certain number of data registers.

BTW, I originally confused the last two programs. Of course you cannot review the Advantage ROM since this is machine code. But you can do so with the PPC-ROM as the source is printed in the ROM's manual.

Dieter