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1.1 KiB
1.1 KiB
foci
foci is a small Forth implementation that prioritizes performance and portability. This threaded Forth implementation uses CPU registers and native execution to maximize efficiency.
Register usage is the only platform-specific requirement; otherwise, foci is written in 100% portable C. There is active support for x86_64, ARM Cortex-M, and MSP430 architectures.
foci compiles to a binary object that can easily be linked into another application. Code size is generally a few kilobytes, while RAM usage is primarily set by the size of foci's two stacks and dictionary.
Available words
dup drop swap rot -rot over tuck @ ! c@ c! + +! - * / mod and or xor = < [ ] ,
cell cell+ cells base here allot latest negate invert 1- 1+ aligned align : ;
literal if then else ' ['] execute decimal hex . emit begin until again while
repeat >r r> 2>r 2r>
Build instructions
Run make with a supported architecture target:
make x86-64: x86_64 processors (i386 is not supported)make arm-cm4: ARM Cortex-M4 microcontrollersmake msp430: TI MSP430 microcontrollers