DB48X: HP48-like RPL implementation for DM42

[ormandj]

(08-19-2024 10:21 PM)c3d Wrote:  

(08-19-2024 07:11 PM)nickapos Wrote:  Hi guys, I got the iOS app today and noticed a couple of minor discrepancies. The EEX button mentioned in the manual does not exist in the app. We got 10x button instead.

Thanks, good catch. Feel free to open individual issues in the GitHub project.

Quote:Some menus in documentation are still in French even though the language I am using is English. I guess there are some untranslated strings.

To my knowledge, only "DEDICACE" (in the Library) is in French. Sorry, it's a hat tip to the Maubert Electronique Mafia. Is there any other?

Quote:In the computing units I see only the basic units bits bytes etc. how do we express the larger units like GBits, GBytes etc?

There are several ways.
- You can type it manually in Alpha mode.
- You can use the prefixes in the "Convert" menu (right-shift 5)

For example, in order to show 1024 bytes in kilobytes or kibibytes, you could use (where LS is left shift and RS is right shift, i.e. two presses on shift):

1024
LS-5 (UNIT)
RS-F5 (Computing)
F2 (byte)
RS-5 (CONV)
F6 (next menu page)
RS-F1 (Ki prefix)

At this point, the stack shows "1 Kibyte"

LS-F6 (previous menu page)
LS-F3 (kilo prefix)

At this point, the stack shows "1 3/125 kbyte"

I believe that your comment is that the Computing units menu should directly contain some of the common sizes, i.e. Kibyte should be there right away, like km for length? Or did I misunderstand you?

Quote:If we want to check previous calculations is there a way to do that? History will show us the stack but not the operations. In Plus42 I am using the virtual printer for this and in hp50g I have an option to turn trace on. Is there anything that will enable this in DB48X?

There is no trace feature yet, but there is a history feature for the command line, and last argument / last stack (undo) commands.

For the history, it's RS-Left (HIST). This automatically activates an editor menu, where RS-F2 and RS-F3 switch to previous/next history. Also note that if you hit the F2 key (Word left) while on the first character in the editor, or the F3 key (Word right) while on the last character in the editor, you will also jump back and forth in the history.

I do a lot of calculations in computing and am trying to figure out how to use this functionality efficiently. An example common computation would be computing how long it would take to transfer 600TB at 10gbit/s. I’m struggling to enter these units directly. The unit menu doesn’t directly support these as you mentioned, and attempting to use alpha mode isn’t working for me “600 TB” ends up showing up as 600 in stack position 2, and TB in position 1.

I definitely think having the common units or even just a menu option that cycles through them after selecting the base unit in the unit menu would be wonderful. So in this case it could be 600 - unit - byte <press toggle button to cycle to TB>. The complication would be the need to support both base2 and base10 forms, since both are used. Perhaps one cycle button for each form.

If there is a way to do this already I’m not understanding I’d love to know it! Thank you for all of your time and effort on this project!