What is f4?

f4 is an indirect-threaded Forth for Windows and/or Linux written in assembly language for FASM.

f4 is based loosely on Richard Jones' famous JonesForth.

f4 uses "FASM" for the assembler. It is available for both Windows and Linux. See this page for more info: https://flatassembler.net/

Building f4

• On Windows, use ./makew.bat
• On Linux, use ./makel