Holon Tools

 Holon11
 Holon86
 HolonJ
 HolonX

 Features
 Appl. Notes

 NewHolon
 HolonT

Features of Holon

Browser

• Clear presentation of the source text as a structure of modules, groups and words.
• Direct access to every word in the program.
• The macro view shows the program structure (no text). The (standard) micro view shows the current part of the structure and the text of the current word.
• History list for fast access to words that have been recently edited.
• Permanent display of the source text.
• All steps in the development cycle are performed in the browser.
• Mode-dependent function key menus.

Structure

• Easily move and reorder the elements in the structure.
• Modules and groups move with the included elements.
• Export and import of modules in a custom Holon format for reuse in new projects.
• Optionally, export and import of modules as ASCII test files.
• Import of existing Forth programs as ASCII text files.
• Each module and group carries a text description for documentation.

Editor

• Usual set of functions, cut&paste, word wrap, find&replace, etc.
• Hypertext lookup of words in a definition.
• Auto indenting of flow control structures.
• Separate text panes for definition and comment.

Assembler

• Standard assembler notation.High level flow control structures for goto-less programming in assembler.Code definitions can span several words in the browser.
• Macros.
• No "End-Code" needed.

Compiler

• Direct conversion of source code into executable code for every word.
• Immediate transfer of the executable code to the target memory.
• When a word is reloaded, the new code replaces the old code in the target.
• Several compilation (=loading) options.
• Plain text error messages.
• The cursor is positioned at the problem spot in the word definition. Compilation continues from the current word.
• Automatic code stripping: selectively loading only the words that are actually used in the program.
• No Forth word headers (symbol table) in the target code.

Interpreter

• Every word can be executed interactively with a browser command.
• The words are executed in the target via the remote monitor. Parameters are provided in the stack window, which also shows the results.
• The stack window displays numbers in hex or decimal, signed or unsigned.
• The classic Forth command line interpreter is also available.
• The command line interpreter accepts flow control structures.

Debugger

• Single step execution of both high-level Forth and assembler code.
• The steps are displayed in the original source code in the browser.
• Display of data and return stack for Forth (colon) words.
• Display of data stack and CPU registers for assembler code.A breakpoint can be set in the current word.A code window displays the memory contents.
• Display of data memory in a running program.

Other features

• Object mechanism optimized for embedded systems.
• The state of development is saved at the end of a session.The system restarts in the same state, ready for the continuation of the work.
• A project is maintained in only two files. Easy backup and handling.