evv/gw-basic-2026

Files

T

Eremey Valetov c488cb526d Update Sphinx docs with v0.14.0 roadmap and fix stale references

Expand roadmap with detailed implementation plans for the next three
features: MBF binary file compatibility (token-stream conversion at
load/save boundary), hardware I/O simulator (portio.c with PIT/speaker/
CGA/joystick port emulation), and DRAW command fixes (M parsing bug,
scale semantics, A rotation, TA/variable substitution). Remove hardware
I/O from known limitations (moving to planned). Fix stale test counts
(64 -> 66) and version string (0.11.0 -> 0.13.0) across docs.

2026-03-11 08:11:13 -04:00

1.6 KiB

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Getting Started

Dependencies

C11 compiler (GCC or Clang)
CMake 3.10+
PulseAudio development library (libpulse-simple) — optional, for SOUND/BEEP/PLAY

On Debian/Ubuntu:

sudo apt-get install build-essential cmake libpulse-dev

On Fedora/RHEL:

sudo dnf install gcc cmake pulseaudio-libs-devel

Building

git clone https://github.com/evvaletov/gw-basic-2026.git
cd gw-basic-2026
mkdir -p build && cd build
cmake .. && make

The binary is build/gwbasic.

Usage

Interactive Mode

Running ./gwbasic with no arguments launches the full-screen editor:

$ ./gwbasic
GW-BASIC 2026 0.13.0
(C) Eremey Valetov 2026. MIT License.
Based on Microsoft GW-BASIC assembly source.
Ok
PRINT 2+2
 4
Ok
FOR I=1 TO 5:PRINT I;:NEXT
 1  2  3  4  5
Ok

Use arrow keys to move the cursor freely. Press Enter on any screen line to re-enter it. F1-F10 insert common commands (F2 runs the program).

Running a Program File

./gwbasic tests/programs/prime_sieve.bas

Piped Input

echo '10 FOR I=1 TO 10:PRINT I*I;:NEXT' | ./gwbasic

Direct Mode Expressions

Type expressions and statements at the Ok prompt:

PRINT SIN(3.14159/2)
 1
A$="HELLO WORLD":MID$(A$,7,5)="BASIC":PRINT A$
HELLO BASIC

Command-Line Options

Usage: gwbasic [options] [file.bas]
Options:
  -f, --full         Use full terminal size (default: 25x80)
  -h, --help         Show this help
  --lpt DEVICE|FILE  Printer output destination (default: LPT1.TXT)
                     Use LPT1 or /dev/lp0 for real hardware
  -v, --version      Show version

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