0bacfcef6c
Graphics viewport and coordinate mapping: - VIEW [[SCREEN] (x1,y1)-(x2,y2) [,[fill][,border]]] with clipping - WINDOW [[SCREEN] (x1,y1)-(x2,y2)] with Cartesian/screen modes - PALETTE [attribute, color] with CGA 16-color remapping - PMAP(coord, func) for logical/physical coordinate conversion - All graphics statements (PSET, LINE, CIRCLE, PAINT, GET/PUT) respect viewport clipping and WINDOW coordinate mapping MBF (Microsoft Binary Format) float support: - CVS/CVD now interpret bytes as MBF format (compatible with real GW-BASIC) - MKS$/MKD$ now produce MBF-encoded bytes - Fixed shift errors in MBF↔IEEE conversion routines (single: 1→0, double: 4→3) - Random-access file I/O now byte-compatible with original GWBASIC.EXE 66 tests (2 new), 61 compat matches (up from 58).
2.4 KiB
2.4 KiB
Development
Development History
| Version | Commit | Description |
|---|---|---|
| 0.1.0 | d8e8375 |
Expression calculator with direct mode |
| 0.2.0 | 6162595 |
Variables, arrays, program storage, control flow |
| 0.3.0 | c2d73e9 |
File I/O, PRINT USING, SAVE/LOAD, MID$ assignment, graphics stubs |
| 0.4.0 | df5c308 |
CHAIN, RUN "file", random-access I/O (FIELD/PUT/GET), CVI/CVS/CVD/MKI$/MKS$/MKD$ |
| 0.5.0 | ad21350 |
Full-screen TUI editor, KEY statement, Ctrl+Break, Sixel graphics, SOUND/BEEP/PLAY, DOSBox-X compat testing, project rename |
| 0.6.0 | ece018d |
DATE$/TIME$/TIMER, FILES, SHELL, CHDIR, MKDIR, RMDIR |
| 0.7.0 | da6b513 |
AUTO, RENUM (with GOTO/GOSUB patching), DELETE, COMMON, LIST range fix |
| 0.8.0 | c68167c |
Dynamic TUI screen buffer, --full flag, LPRINT/LLIST with --lpt |
| 0.9.0 | 2a8f98b |
EDIT statement, ON TIMER/ON KEY event trapping, F-key escape parser fixes |
| 0.10.0 | Binary tokenized SAVE/LOAD, INKEY$ extended key sequences, golden-file regression tests, classic BASIC programs | |
| 0.11.0 | DEF SEG / PEEK / POKE virtual memory, GET/PUT graphics sprites, PRINT USING fixes | |
| 0.12.0 | BSAVE/BLOAD, TUI ANSI 16-color rendering, CGA graphics framebuffer PEEK/POKE, keyboard shift flags | |
| 0.13.0 | VIEW/WINDOW/PALETTE graphics, PMAP function, MBF float format for CVS/CVD/MKS$/MKD$ |
Tests
66 test programs in tests/programs/, plus 4 classic interactive programs in
tests/classic/ (Hamurabi, Lunar Lander, Gunner, Diamond from David Ahl's
BASIC Computer Games).
Run the full automated suite:
bash tests/run_tests.sh
Each test has a 5-second timeout. 62 tests have .expected golden files
for output regression detection. Three timing-dependent tests (datetime,
on_timer, timer_stop) and one visual test (color_test) run without golden
comparison.
Compatibility Testing
Compare output against real GWBASIC.EXE running under DOSBox-X:
# Generate .expected files from GWBASIC.EXE (requires DOSBox-X Flatpak)
bash tests/run_compat.sh --generate
# Compare gwbasic output against .expected
bash tests/run_compat.sh
CI
GitHub Actions runs on every push to main and on pull requests. The workflow
builds the project with PulseAudio support and runs all 64 test programs.