DM41X

[RMollov]

I don’t need one. But I ordered it just to see if that’s true.
Any way of knowing how many betas are ordered?
Cheers

[Ángel Martin]

(01-23-2020 08:17 AM)hth Wrote:  When someone gets their hand on this DM41X, can you try the Ladybug module on it? I am curious what happens with the multi-stack and multi-program line displays.

The reason is that Ladybug replaces the standard stack display and also fiddles with program lines (semi-merged steps). I doubt it will work, I am mostly curious how bad it becomes.

I loaded the LadyBug "0A" with just a little tweaking to the MOD file settings. It seems to work just fine in manual more but in program mode the semi-merged lines show as starburst, not quite as expected... or maybe is it?

For example, RRC 03 shows as a single line, but it's followed by another program line with just the starburst.

Another issue is that *somehow* the function MASKL is mapped to the "SETUP" function (SHIFT-USER), which creates an interesting situation: once the LadyBug is installed it CANNOT be removed via firmware, and one must use the hardware reset (the "paperclip" of death...)

I suspect this is a consequence of the keyboard layout differences with the original 41C... a very touchy subject...

I may be missing something though, as you know I'm not very familiar with the module since my setups always use the Library#4 - which is fully supported on the DM-41X, as well as all my other modules (SandMath, 16C Emulator, etc...)

[hth]

(01-27-2020 02:15 PM)Ángel Martin Wrote:  I loaded the LadyBug "0A" with just a little tweaking to the MOD file settings. It seems to work just fine in manual more but in program mode the semi-merged lines show as starburst, not quite as expected... or maybe is it?

For example, RRC 03 shows as a single line, but it's followed by another program line with just the starburst.

The two lines are expected, it is the "semi" part. The first instruction should show the merged step, but then it is followed by a Text line (starburst, or something else) that is the actual postfix. This is because trying to hide the text-postfix instruction would mess up line numbers and be inefficient (step/backstep to figure out when to potentially hide it). I opted for making it somewhat more explicit to the user what is actually happening (displaying both steps), while displaying the first step decorated to make it easier to read.

What happens in a multiline program display, does the RRC display like that (only RRC) or does it have the postfix operand, i.e. RRC IND Z?

Quote:Another issue is that *somehow* the function MASKL is mapped to the "SETUP" function (SHIFT-USER), which creates an interesting situation: once the LadyBug is installed it CANNOT be removed via firmware, and one must use the hardware reset (the "paperclip" of death...)

I suspect this is a consequence of the keyboard layout differences with the original 41C... a very touchy subject...

I may be missing something though, as you know I'm not very familiar with the module since my setups always use the Library#4 - which is fully supported on the DM-41X, as well as all my other modules (SandMath, 16C Emulator, etc...)

You can probably press SHIFT-0 (or XEQ "FLOAT", same thing) to leave integer mode and then SHIFT-USER will probably work as SETUP.

Given the way I am doing now with custom keyboard, things such as SHIFT-USER and SHIFT-ALPHA are possible to use from MCODE keyboard layouts.

With my coming OS4 module these features are going to be a lot easier to use, which probably will result in more of this. Keys are going to be better utilized, semi-merging (extra decoration followed by a string literal) is going to be more common, at least in my small MCODE universe.

[TomC]

Received DM41X today - in Michigan, USA - one week shipping time.

TomC
DM41X SN0051

[toml_12953]

I got mine in Malone, NY today. The only complaint I have is the color of the "yellow" key. Mine is a color described by my friends as "puke green". It's sort of a greenish khaki.

[KF6GPE]

Mine came today too! S/N 25. Keys have a slightly better feel than on my beta DM42. I need to dig out some ROM images and get it configured tomorrow.

Love the font, and I love DSP mode.

I can see this replacing Dad's HP-42S at on my desk at work pretty quickly.

[anetzer]

DM41X SN0043 arrived yesterday.

In comparison to the DM42 the speed of the calculator is really quite slow. I wonder whether that might change eventually....

While I appreciate the recreation of the original screen font, I would very much welcome a possibility to switch to the font used for the DM42.

The simulation of the multi segment LCD display really gobbles the screen away and I have not yet seen a possibility to use the lines that are dedicated to the permanent display of Y, Z and T registers for other, more elaborate purposes.

More lines and more characters per line would surely be great in a number of novel applications of the HP-41.

Clearly a CAS mode would also be welcome.

Might this be possible by some implementation of the HP 82163B Video Interface architecture to the calculator display?

Just asking...


Cheers,

Andreas

[grsbanks]

(01-29-2020 02:51 PM)anetzer Wrote:  In comparison to the DM42 the speed of the calculator is really quite slow. I wonder whether that might change eventually....

No comparison is possible. The DM42 runs native code (remember, Free42 is a simulation of the HP-42S) while the DM41X is a Nut emulator running a patched version of the HP-41CX's ROM.

(01-29-2020 02:51 PM)anetzer Wrote:  The simulation of the multi segment LCD display really gobbles the screen away and I have not yet seen a possibility to use the lines that are dedicated to the permanent display of Y, Z and T registers for other, more elaborate purposes.

Try the DSP key...

(01-29-2020 02:51 PM)anetzer Wrote:  More lines and more characters per line would surely be great in a number of novel applications of the HP-41.

Again, try the DSP key when you're in PRGM mode...

The manual will soon be released for this.

(01-29-2020 02:51 PM)anetzer Wrote:  Clearly a CAS mode would also be welcome.

In an HP-41 clone!?!?

[Sylvain Cote]

(01-29-2020 03:11 PM)grsbanks Wrote:  

(01-29-2020 02:51 PM)anetzer Wrote:  Clearly a CAS mode would also be welcome.

In an HP-41 clone!?!?

Has already been done by Antonio Lagana's i41CX+ NUT emulator for iOS.

[Massimo Gnerucci]

Features creeping, here we go!

[Dave Britten]

Has anybody run the n-queens benchmark on it yet to gauge the speed of the current firmware version?

For comparison, the 41CX takes 00:17:56, the DM41L takes 00:14:36 (I'm assuming that's 48 MHz mode), and the DM-42 takes 00:00:04.18 on battery power, or 00:00:01.57 with USB power.

[charger73]

NQUEENS:
DM41X FAST Mode: 00:01:54
DM41X FAST Mode with USB Power: 00:00:35
DM41X SLOW Mode : 00:24:28

[Dave Britten]

(01-29-2020 06:37 PM)charger73 Wrote:  NQUEENS:
DM41X FAST Mode: 00:01:54
DM41X FAST Mode with USB Power: 00:00:35

Nice! Clearly slower than the DM42, which is to be expected, but still very respectable times.

[rprosperi]

(01-29-2020 03:39 PM)Massimo Gnerucci Wrote:  Features creeping, here we go!

Don't fret... if it aint 41CX, it aint going in...

[Massimo Gnerucci]

(01-29-2020 07:34 PM)rprosperi Wrote:  

(01-29-2020 03:39 PM)Massimo Gnerucci Wrote:  Features creeping, here we go!

Don't fret... if it aint 41CX, it aint going in...

Eheheh, I stand reassured. :D

[smp]

Just received my DM41X Beta this afternoon! SN 00027
Whoo Hooo !!!
I am delighted!

smp

[anetzer]

(01-29-2020 03:33 PM)Sylvain Cote Wrote:  

(01-29-2020 03:11 PM)grsbanks Wrote:  In an HP-41 clone!?!?

Has already been done by Antonio Lagana's i41CX+ NUT emulator for iOS.

No one wants to play pinball, I guess, but even on the HP42S a quick graph could be plotted for an equation.

I guess someone will eventually start to play around with that big screen...

[burkhard]

(01-29-2020 02:51 PM)anetzer Wrote:  While I appreciate the recreation of the original screen font, I would very much welcome a possibility to switch to the font used for the DM42.

The simulation of the multi segment LCD display really gobbles the screen away and I have not yet seen a possibility to use the lines that are dedicated to the permanent display of Y, Z and T registers for other, more elaborate purposes.

More lines and more characters per line would surely be great in a number of novel applications of the HP-41.

Clearly a CAS mode would also be welcome.

I think you missed the aim of the machine!

[toml_12953]

OK folks! Here's a question for all you old* 41 owners: How many ROMS are there anyway? I see reference to many on here but is there a comprehensive list of the ROMs that were/are available? I suspect they number in the hundreds but it would be nice to see a list in one place so I could decide which ones to download to fit my usage of the 41X.

* I'm referring to the calculator being old, not YOU!

[anetzer]

(01-30-2020 01:52 PM)burkhard Wrote:  I think you missed the aim of the machine!

I am aware that the first goal is a stable HP-41 emulation on the DM4x hardware.

I do however wonder whether we might see novel applications of that huge screen area some time in the future. Even the original HP-41 eventually supported output to a CRT...

I tried the DSP button and it clearly helps in program mode at least.

This is not even the release version, it's just a beta. I just thought that a base plotting functionality would be nice somewhere down the road...