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The PC simulator is available for download directly from Sourceforge:
Download latest files from Sourceforge.net
An early alpha version of the firmware for the 50g hardware can be downloaded from here:
To install this firmware, simply use the standard tools for a firmware update via USB, or use an SD card. The procedure using an SD card is as follows:
- Copy the downloaded firmware (newrplfw.bin) to the root directory of your FAT16 formatted SD card.
- Create a text file with a plain text editor containing a single line of text with the name of the firmware file: newrplfw.bin
- Save that text file also to the root directory of the SD card. The file must be named update.scp
- Reset your calculator while at the same time pressing the + and - keys to access the boot loader
- Select option 1 (Update), then option 2 (SD card), and the process will begin. Do not interrupt the process until complete.
To revert to the original firmware follow the same procedure, replacing the name of the firmware file for your favorite ROM version.
- Details
newRPL is under heavy development. This page reflects the status of the project, but since it is manually updated it may not reflect the latest changes to the source repository.
This list reflect the global components and features, not all commands related to each feature may be have been implemented, for example when we say that "Integers" is complete means that the object is implemented, not that every single operation with integers is finished. For a detailed list of RPL commands that are implemented, their status and compatibility notes, see the Detailed status page.
| RPL CORE | ||
| COMPONENT / TASK | STATUS | REMARKS |
| Execution loop | Complete | |
| Memory manager | Complete | |
| Garbage collector | Complete | Naive mark and sweep |
| Compiler | Complete | |
| Decompiler | Complete | |
| SIMULATOR / TARGET - USER INTERFACE | ||
| COMPONENT / TASK | STATUS | REMARKS |
| Display | Complete | |
| Keyboard | Complete | |
| Text Editor | Complete | |
| Stack environment | Partial | Needs pretty print support |
| Soft menus | Complete | |
| RPL LANGUAGE FEATURES | ||
| FEATURE / OBJECT | STATUS | REMARKS |
| Secondary object | Complete | |
| Local variables | Complete | |
| Global variables | Complete | |
| Directories | Complete | |
| IF / ELSE / END | Complete | |
| CASE / THEN / END | Complete | |
| IFERR / THEN / END | Complete | |
| FOR / START loops | Complete | |
| WHILE / REPEAT loops | Complete | |
| DO / UNTIL loops | Complete | |
| Overloadable operators | Complete | |
| Integers | Complete | |
| Infinite precision integers | Will not implement | Replace with real numbers |
| Reals | Complete | |
| Complex | Complete | |
| Strings | Complete | |
| Char | Will not implement | Use strings instead |
| Hex Strings | Will not implement | Use new BINDATA objects |
| Arrays | Complete | |
| Complex arrays | Will not implement | Included in regular arrays |
| Lists | Complete | |
| Symbolic | Complete | Basic CAS rules engine. Needs more work. |
| Symbolic arrays | Will not implement | Included in regular arrays |
| Units | Complete | |
| Tags | Complete | |
| Grobs | ||
- Details
Introduction
What exactly is newRPL?
newRPL is a re-implementation of the HP48/49/50 series calculators programming environment. The RPL scripting language is being redesigned and recreated with even more powerful features.
While this new implementation is written in portable C, initially, the target will be the HP50g hardware, consisting on the following:
- ARM 920T processor running at up to 200 MHz
- 512 KBytes of RAM
- 2 MBytes of NOR flash memory.
- 16-grays screen, 131x80 pixels
Simultaneously, a simulator for the PC environment is being used for development and also offered to the users for testing.
Being a complete firmware replacement, installing newRPL on a HP 50g calculator completely removes the old Operating System and transforms the calculator into a newRPL device. The installation process is no different from installing any other ROM updates, and is completely reversible: simply flash the original "stock" firmware from HP and the calculator will be back to normal.
The newRPL firmware provides a few advantages over the standard OS:
- An order of magnitude faster
- More RAM available to the user
- Arbitrary numeric system precision up to 2000 digits
- Dual soft-menu interface
- Many keyboard shortcuts to work more efficiently
- More powerful units
- Faster support for SD cards, including SDHC cards
- 8-level stack undo/redo
- Unicode text support throughout for better exchange of information with other devices
Status
The firmware is usable as a programmable scientific calculator. For more details refer to the Project Status page.
The firmware image can be downloaded from the Downloads page.
