SwissMicros Calculator Forum

Hi Dear All

Can anyone help me understand the mcode div110(18A5) div120(18AF) div15(18A9). What is this used for?

also what the difference between listing div2-10 vs divide(106F). Understand the div2-10 is for A and C register calculation. So how about the Divide

Thank you!

Regards
Daniel

rprosperi wrote: ↑

Sat Nov 25, 2023 2:23 pm

Sorry, no, the DM41/DM41L cannot have any modules installed, this is only possible on the 41X.

Oh, that's sad. Thank you

I own a dm41x it's a great calculator. I am looking at dm41 (landscape) now. I am wondering if this model capable of "plug" module to it? for instance, plug a Hepax module.

danielCL wrote: ↑

Thu Nov 23, 2023 9:11 am

hth313 wrote: ↑

Wed Nov 22, 2023 7:24 pm

The best documentation for the math routines is a document Angel wrote, it is on the hp41.org web site and their DVD, Internal Documentation, 13-digit OS routines (a pdf).

May I know which document you are referring to

Oh, I find it. thank you !

You will have to become familiar with the 10-digit and 13-digit forms. If not yet, the book referenced by Bob may be a good start (I didn't check). Unfortunately, I don't find article explain the 10 digit and 13 digit forms. Unless, you are referring to Mantissa , X&S. Thanks for your advice an...

The main problem here is that the HP41 VASM listing are quite well commented, except for the math routines, which have practically no comments at all. So it is quite difficult to understand the operation and entry and exit conditions for these routines, and which CPU registers are used along the wa...

hth313 wrote: ↑

Wed Nov 22, 2023 7:24 pm

The best documentation for the math routines is a document Angel wrote, it is on the hp41.org web site and their DVD, Internal Documentation, 13-digit OS routines (a pdf).

May I know which document you are referring to

Hi

When I do A and C multiplication (MP2-10), it return the multiplication to Register C. However I notice it the value in A also some how changed. By right it should remain undisturbed. Why is it like that.

Also, what is the difference between MP2-10 MP1-10 and MP1-13

Regards
Daniel

MeinKuipers wrote: ↑

Mon Oct 30, 2023 11:25 am

To load a RAM page, you have to take a .MOD file configured as a RAM page.

I already find the mod file you mentioned. However, just curious, how do I make my own MOD file which configure as RAM page? What tool do I use ?

To load a RAM page, you have to take a .MOD file configured as a RAM page. These are readily available in the .MOD repository in V41 (a great emulator for your PC (if you are using Windows), for example RAM4k.MOD. After loading and activating verify which page it is loaded in and you are ready to r...