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Build Status Issue Stats

Swapforth is a cross-platform 16- and 32-bit ANS Forth.

Currently supported hosts are:

  • J1a - minimal 16-bit FPGA CPU with 8K of memory Demo
  • J1b - 32-bit FPGA CPU with 32K of memory
  • FT900 - 32-bit 100 MHz CPU with 256K flash, 64K RAM

Simulated hosts include:

  • Python in 16-, 32- and 64-bit big- and little-endian
  • J1a and J1b under Verilator

Recent changes:


  • Both Python 2.x and 3.x are supported
  • The shell now runs on Windows, with and without pyreadline
  • The iCEstick port is now running at 48 MHz