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gw-basic-2026/docs/index.md
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Eremey Valetov 5105ecafd6 Allow RND without parentheses, update Sphinx docs to v0.8.0 
RND can now be called without parentheses (equivalent to RND(1)),
matching real GW-BASIC behavior for legacy code compatibility.

Update all Sphinx documentation pages to reflect features added in
v0.6.0-0.8.0: DATE$/TIME$/TIMER, FILES/SHELL/CHDIR/MKDIR/RMDIR,
AUTO/RENUM/DELETE, COMMON, LPRINT/LLIST with --lpt, --full TUI flag,
dynamic screen buffer, 54 tests.
2026-02-22 14:09:18 -05:00

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GW-BASIC 2026

A portable C reimplementation of Microsoft GW-BASIC, using the original 8088 assembly source (released by Microsoft in 2020) as the authoritative reference.

This is not a transpilation — it reimplements the algorithms in clean C11 with modern data structures while targeting bug-compatible behavior. Unlike the original assembly (43,771 lines across 43 .ASM files), this version is structured as modular C suitable for new feature development.

Highlights

  • Authentic full-screen editor — dynamically sized screen buffer (25×80 default, full terminal with --full), free cursor movement, Enter-on-any-line, F1-F10 function keys, Insert/Overwrite toggle
  • Sixel graphics — SCREEN 1/SCREEN 2 rendering in compatible terminals
  • Sound — SOUND, BEEP, PLAY (MML) via PulseAudio
  • Full file I/O — sequential, random-access, SAVE/LOAD/MERGE/CHAIN/COMMON
  • Printer output — LPRINT/LLIST to file or real hardware via --lpt
  • 54 test programs with DOSBox-X compatibility testing against real GWBASIC.EXE
  • MIT License
:maxdepth: 2

getting-started
language-reference
architecture
development
roadmap
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