Forth Development Itsy (by John Metcalf) Itsy Forth: The Compiler Itsy Forth: Implementing the Primitives Itsy-Forth: the Dictionary and Inner Interpreter Itsy-Forth: the Outer Interpreter of a 1K Tiny Compiler Itsy-OS Kernel: Preemptive Switcher & Memory Manager HDL VHDL clone of J1 forth CPU Articles Catch and Throw [local mirror 20200229] Standards Forth-79 Forth-83 Forth83 html Forth83 PRN ANSI dpans94