2dbbec4ad7
This release focuses on heavy testing of the new variable-precision decimal stack. Adding tests also means finding bugs. Another significant change is support for fixed-precision hardware-accelerated floating point, using 32-bit and 64-bit IEEE754 binary floating-point representation. Since this uses a binary format, some decimal values do not map to decimal correctly. For example, displaying 1.2 with a large number of decimals will show residue, because 1.2 does not have an exact (zero-terminated) representation in binary. New features: * plotting: Make refresh rate configurable * menu: Add `/` key to `FractionsMenu` * hwfp: Add support for hardware-accelerated floating-point * menus: Add hardware floating-point flag to `MathModesMenu` * ui: Allow multiple uses of `.` to insert DMS separators * HMS: Editing of HMS values in HMS format Bug fixes: * stats: Fix crash on `variance` with single-column statistics * algebraic: Clear error before evaluating the function * functions: Correctly emit a type error for non-algebraics * ui: Make sure we save stack if closing the editor * logical: Fix mask for rotate left with 64-bit size * logical: Make sure we save args for single-argument logicals * flags: Update flags on `FlipFlag`, consume them from `BinaryToFlags` * stack: Show multi-line objects correctly * lists: Returns `Bad argument value` for index with bad arguments * lists: Return an empty list for tail of empty list * arithmetic: `→Frac` should not error on integers * power: Do not shut down during `WAIT` if on USB power Improvements: * menu: Shorten the labels `→QIter` and `→QPrec` to avoid scrolling * stack: Avoid running same code twice on simulator * ids: Add aliases for hardware floating point * functions: Optimize abs and neg * ui: Replace calls to `rt.insert` with calls to `insert` * menu: Reorganize fractions menu * dms: Do the DMS conversion using fractions * list: Adjust multi-line rendering * copyright: Update copyright to 2024 * text: Return null text when indexing past end of text Testing: * tests: Increase the delay for help to draw * tests: Add tests for hardware-accelerated floating-point * tests: Add shifts and rotate tests * tests: Check flag functions * tests: Test DMS and HMS operations * tests: Add test for `integrate` using decimal values * tests: Test multi-line stack display * tests: Add tests for `GETI` * tests: Min and max commands * tests: Repair last regression test * tests: Check behaviour of 0^0 * tests: Avoid string overflow in case of very long message Signed-off-by: Christophe de Dinechin <christophe@dinechin.org> |
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|---|---|---|
| config | ||
| DB48X-DB50X-Keys-Src | ||
| DB48X-Keys | ||
| dmcp@4befe9b376 | ||
| dmcp5@91cb47248c | ||
| doc | ||
| fonts | ||
| help | ||
| images | ||
| inc | ||
| lib | ||
| recorder@8b0b079b54 | ||
| sim | ||
| src | ||
| state | ||
| tools | ||
| .clang-format | ||
| .clangd | ||
| .gitignore | ||
| .gitmodules | ||
| AUTHORS | ||
| BUILD.md | ||
| FREEDOM_COVENANT.txt | ||
| Keyboard-Cutout.png | ||
| Keyboard-Layout.png | ||
| LICENSE.txt | ||
| Makefile | ||
| README.md | ||
| STATUS.md | ||
DB48X on DM42
The DB48X project intends to rebuild and improve the user experience of the HP48 family of calculators, notably their "Reverse Polish Lisp" (RPL) language with its rich set of data types and built-in functions, and Lisp-level programming power.
The project in this repository is presently targeting the SwissMicro DM42 and DM32 calculators. It leverages their built-in software platform, known as DMCP. There is also a simulator that is tested on macOS or Linux.
In the long-term, the vision is to be able to port DB48X on a number of different physical calculator platforms, like the ARM-based HP50 and related machines (HP49, HP48Gii, etc), and the HP Prime (at least the G1, since the G2 seems a bit more locked down), maybe others. The basis for that work can be found in the DB48X project.
This project was presented at FOSDEM 2023
Why name the project DB48X?
DB stands for "Dave and Bill", who are more commonly known as Hewlett and Packard. The order is reversed compared to HP, since they reportedly chose the order at random, and it's about time Dave Packard was given preeminence.
Part of Dave and Bill's great legacy (beyond giving birth to the Silicon Valley) is a legendary series of calculators. The HP48 remains one of my favorites, notably for its rich built-in programming language, known as Reverse Polish Lisp (RPL). This project aims at recreating a decent successor to the HP48, at least in spirit.
State of the project
This is currently UNSTABLE and INCOMPLETE software. Please only consider installing this if you are a developer and interested in contributing. Or else, have a paperclip at hand just in case you need to reset your calculator.
The detailed current status is described in the STATUS file.
How to build this project
There is a separate document explaining how to build this project.
The simulator includes a test suite, which you should run before submitting
patches. To run these tests, pass the -T option to the simulator, or hit the
F12 key in the simulator.
Built-in documentation
The calculator features an extensive built-in documentation
that uses a restricted version of Markdown.
You access that built-in help by holding a key down, or
using the Help command
Other documentation
There is DMCP interface doc in progress see DMCP IFC doc (or you can download html zip from doc directory).
The source code of the DM42PGM program
is also quite informative about the capabilities of the DMCP.