js84

An attempt to get a JavaScript engine onto the Texas Instruments 84 Plus Color Edition Calculator. Uses Elk as the engine. elk.c and elk.h have a seperate license.

Functions are mapped 1-to-1 from C to JavaScript as best as possible.

Things Needed

• node.js (if you wish to package files)
• the CE Toolchain
• sanity

How to package a file

1. Install the toolchain
2. Make a JavaScript file. See src/main.c for the currently defined functions.
3. node index.js /path/to/javascript/file.js (e.g. node index.js ./examples/dump.js)
4. make clean && make debug
5. Tada! Load JS84.8xp onto your calculator.

Supported functions

• dump();
• sys/basicusb.h
• From sys/power.h: boot_TurnOff, boot_TurnOn, boot_GetBatteryStatus
• From ti/screen.h: os_ClrHome

Known bugs

• Strings being passed to foreign functions don't seem to work. Printing a string causes it to become negative infinity or %.17g