Beta BASIC
Spectrum BASIC enhanced
Andy Wright's comprehensive BASIC extension for the ZX Spectrum that added procedures, toolkit features, and graphics commands missing from Sinclair BASIC.
Overview
Beta BASIC was a comprehensive BASIC extension for the ZX Spectrum created by Andy Wright and published by Betasoft. It added features sorely missing from Sinclair BASIC—procedures, local variables, toolkit commands, and enhanced graphics—making serious programming more practical on the Spectrum.
Fast Facts
- Creator: Andy Wright
- Publisher: Betasoft
- Released: 1983 (updated through 1980s)
- Platform: ZX Spectrum
- Type: BASIC extension
- Versions: Multiple updates
Key Features
| Feature | Description |
|---|---|
| Procedures | Named subroutines with parameters |
| Local variables | Proper scoping |
| ELSE | Missing from Sinclair BASIC |
| LOOP/WHILE | Structured loops |
| Graphics | Enhanced drawing |
| Toolkit | AUTO, RENUMBER, FIND |
What Sinclair BASIC Lacked
Beta BASIC filled significant gaps:
| Sinclair BASIC | Beta BASIC |
|---|---|
| GOSUB only | Named PROC |
| All globals | LOCAL variables |
| No ELSE | Full IF/ELSE |
| Limited loops | REPEAT/UNTIL, WHILE |
Programming Improvements
Beta BASIC enabled:
- Structured programming
- Readable code
- Maintainable programs
- Larger projects
- Professional practices
Toolkit Features
Development aids:
| Command | Function |
|---|---|
| AUTO | Automatic line numbers |
| RENUM | Renumber lines |
| DELETE | Remove line ranges |
| FIND | Search code |
| TRACE | Debug execution |
Compatibility
Beta BASIC was designed to:
- Co-exist with existing programs
- Not break Sinclair BASIC
- Add rather than replace
- Work on all Spectrum models
Legacy
Beta BASIC represented what Sinclair BASIC should have been—a complete programming environment rather than a bare-bones interpreter. It enabled programmers to write larger, more maintainable programs and demonstrated the power of thoughtful language extension.