Py - 41

Free HP41 CX emulator for HP PRIME in python.

• • 320 memory registers.

  • full XMEM (but do not use the integrated CX editor 'ED')

  • full Helios printer support

  • partial timer support (do not use interactive stopwatch)

A big thanks to the Prime developpers to give us such an awsome micro-python integrated so deeply in the Prime firmware, cudos to Cyrille, Tim and all others involved.

To conclude, python is 10 times faster than HPPL for casual programs ....

• • put Py41b.hpappdir in calc

  • select Py41b apps

  • select 'clear'

  • to leave use 'Home', ram is then saved

  • 'ON' break the python app, avoid to use it except to kill app (no ram saved)

  • 'Apps' is fast/normal speed toggle

  • 'Symb' is on/off toggle of printer

  • 'Plot' is Manual/Trace/Normal selector of printer

  • 'Num' is PRT key of printer

  • 'arrow up' is 'ADV' printer key

  • 'View' is User key

  • 'Menu' is Prgm key

• Vars : Sigma+

• Toolbox : XEQ

• Math expr : STO

• x t \theta n : RCL

• a b/c : SST

• x^y : 1/x

• x^2 : sqrt x

• () : x<>y

• , : RDN

• ' ' : is R/S (it's the SPACE key)

• shift : shift

• alpha : alpha

V.0: app name is py41b

• speed on a G2 is 4.5 times FASTER than a real 41. And there no throttle in the speed in python vs HPPL

• some bugs in python:

  • event for mouse send back unsigned int64 coordinates, ie with hpprime.eval('WAIT(-1)') But when swiping the screen, coordinates can become negative, so it should be (SIGNED) int64 ... see code in helios.py to detect that.

• • • missing second color for background color for text writing for hpprime.textout

    • how to select text size for hpprime.textout

  • key press and printer scrolling (swipe the screen) are only seen when Nut cpu is in sleep mode.

    • bonus : avoid using too much battery waiting in an iddle loop (it wait in WAIT(-1))

    • problem :

      • interval timer not working (so CLOCK is not ok, use TIME to see the clock)

      • ED editor do not work (it pools on the keyboard in asm, it do not use nut cpu state)

      • same for interactive StopWatch

      • use 'ON' to leave if you got locked in such a state (but last changes in ram won't be saved)

    • next major release will correct that

V.1: app name is py41c

• .MOD support, even for system ... hepax support added

• some .MODs integrated in app, see list with 'shift' Help

• Now configuration is done with config.py file (see it, some examples included)

  • mod.loadOs(cpu, name) for the system

  • mod.loadPort(cpu, port, name) load module in a port (1..4 so pages 8 .. 15)

  • mod.loadPage(cpu,page,name) try to load a module in a specific page

  • mod.loadPortHRam(cpu,port,name) load double hepax ram (8K words) in port

  • cpu.loadRam(name) load the standard & extended ram (should be the last)

• Display page map with 'Help' key, useable MOD with 'shift' Help

• For fun the initial config is rather full (all pages used)

• Timer module support now interval timer to stopwatch and 'CLOCK' should be ok

  • 'shift' ON still not supported ... could be done but not usefull

• For HEPAX only ONE 8K word module is allowed

  • the rom should be loaded in an ODD page (not auto relocate)

  • the 8Kw ram is relocated when loaded (you can change the port)

  • the 8Kw ram is initialized at creation

• Lib #4 addded

• 'ED' should work but the keyboard mapping is still a problem (next major upgrade)

• Auto time out added (5 minutes, can be changed, see source)

• Some changes on the key mapping:

  • in USER the key map is mainly ALPHA organized from A to P keys then numeric for the rest of the keyboard

  • so make your ASN in USER mode to have the right key assigned ... (use CAT 6 to see that)

  • doing so will ensure that even local alpha labels will works

  • the code is now more readable (see key.py)

V.2: app name is py41d

• better keyboard mapping see picture at the end of page : SST and BST are direct keys !

• now assigns are done with the USER keyboard mapping (even for amc/OsX), local label are ok too.

• save cpu state when leaving (should avoid some race conditions)

• starting some Focal functions see focal.py (and 'CAS' key : list of program in memory)

• key.py rewrote to allow better keymap handling see by yourself

• patched ED for lower case for CX rom (see Total Rekall 2021 - Warp Core++ K6 from Ángel Martin)

• ...

V.3: app name is py41e

• automatic setting with respect to dark/light theme (only for default color, otherwise, correct it yourself in the code)

• import/export of raw program supported

• get a list of prgm in HP41 ram with Help

• get a list of .MOD and .raw files in App with shift Help

• see example in config.py python module, all is done at start of emulator, if you leave with 'Home' HP41 ram will be saved

See the config.py extract below :