2021.1

RetroForth 2021.1 Release Notes

Core Language

• choose (and other conditionals) now treat non-zero as TRUE and
  zero as FALSE instead of requiring a flag of -1 for TRUE
• add ^ (ASCII ESC) to escape sequences in s:format

I/O

• improvements to some of the pipe related words in the unix:
  namespace
• reduced code size for each device handler slightly
• added abort to Retro on Unix

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Toolchain

Makefile

• Small adjustments to reduce build time

C

• retro-unu

  • now supports user defined code and test block delimiters (C)

• retro-muri

  • supports changes from retro-unu
  • now has separate passes for each step of the assembly process
  • removed some unused variables

Python

• retro-amalgamate.py added to generate a single file Python source
• faster retro-extend.py
• added retro-embedimage.py

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VM

nga-c

• reduced redundancy across the various implementations in C
• removed an unused function
• fixed several bugs in address stack handling in execute() that
  were causing issues when including files in some circumstances

nga-python

• now written using classes
• no longer limited to 32 or 64 bit cells
• uses Python functions to shadow some Retro words for better
  performance
• caches the Retro dictionary to improve lookup performance
• embeds image as a Python source
• now supports -f, -i, and -u command line parameters
• improved error handling for invalid addresses
• fixed a bugs in address stack handling in execute() that was
  causing issues when including files in some circumstances

nga-nim

• added initial Nim implementation by Jorge Acereda

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Examples

• added "2020 Advent of Code", days 1-5
• added palindromic numbers detection (SVFIG challenge)
• added bindings over curl
• added muri with direct use of hex values
• refactoring & general cleanups in Atua-WWW
• Atua-WWW now ignores ?... appended to URLs