DM-42 and WP-43S

[Paul Dale]

Marcus set up the firmware build system -- I believe this was built on top of HP's example code but I'm not certain. We never figured out why the Yagarto 4.6.0 compiler worked and others didn't. The image was produced looked fine but it never quite worked. We would have preferred a firmware build under Linux using free/open tools.

The console version of the 34S was designed for Unix like systems using the curses library -- I used it under Linux or MacOS X, I don't know if it even builds under Windows. I doubt many other people other than myself ever bothered with it -- it is arcane and difficult to use. Still it served its purpose well enough.

The reason to replace Perl with C is so that the assembler can be hosted on the device. I think this is a reasonable suggestion, it does make keystroke programming easier but would require some text edit capabilities.

I can't locate the precise processor being used in the DM-42 at the moment It is a decently resourced ARM core.

Rather than rebuilding from the source code to make modifications, perhaps an embedded scripting language (Lua or Python?) could be included. These are much safer & easier to write programs for but are a major step away from the keystroke programming of traditional calculators.


Pauli