GoKawiilBorland's Turbo Basic history traced from BASIC/Z to PowerBASIC
Turbo Basic began as Bob Zale's BASIC/Z, the first interactive compiler for CP/M, before Borland International acquired it and released it for MS-DOS in 1987. Borland sold it for only a couple of years before discontinuing it, after which Zale bought back the rights and continued development under the name PowerBASIC. Unlike interpreters such as GWBASIC, Turbo Basic compiled code, removed the 64KB file-size limit, and offered an integrated edit-compile-run development environment.
GoKawiil's interpretation of the reporting above, not reported fact.
The account illustrates how early PC-era BASIC tools evolved from interpreters into professional compiler environments with IDEs, a shift that made BASIC more viable for larger, more serious software projects. Borland's brief ownership and quick discontinuation, followed by the original author reclaiming the product, shows how software rights and lineage could pass between companies and individuals in that era. This history also underpins the later PowerBASIC product line that some retro-computing enthusiasts still reference today.
- Turbo Basic originated as BASIC/Z, created by Bob Zale for CP/M systems.
- Borland published it for MS-DOS in 1987 but discontinued it within a couple of years.
- Zale reacquired the rights and relaunched the compiler as PowerBASIC.
Source: dosdays.co.uk, 2026-10-05
Published there as: “Borland Turbo Basic”
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