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Microsoft KB Archive/35439

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QuickBasic Incompatible with Radius, Prodigy Accelerator Board

Article ID: 35439

Article Last Modified on 1/8/2003


  • Microsoft QuickBasic Compiler for Macintosh 1.0

This article was previously published under Q35439


Microsoft has not tested QuickBasic version 1.0 with any of the Macintosh accelerator boards on the market. Several customers have reported incompatibility problems associated with the Radius, Prodigy, and Dove (such the Dove Marathon model) accelerator cards for the Apple Macintosh. Microsoft has not tested the reported problems and does not guarantee or support compatibility with Macintosh accelerator boards.


According to unconfirmed customer reports, the Radius accelerator board reportedly does not allow QuickBasic to operate normally, and varied results may occur if a floating-point chip is present. If you have a floating-point chip (for example, a Motorola 68881) on your accelerator board and do not use the Generate 68020 Code option in the QuickBasic compiler, a compiled QuickBasic program reportedly runs correctly.

However, if you do not have a floating-point chip on the accelerator, or if you use the Generate 68020 Code option and run on an accelerator that has a floating-point chip, the compiled QuickBasic program may return a hardware interrupt, "System Error 11."

The Radius and Prodigy accelerator cards also reportedly do not work when using the SOUND statement in single-voice mode. A system hang may result.

One customer with a Radius accelerator board reported "Out of memory" errors when loading a program into the QuickBasic editor. He also reported "Subscript out of range" errors for correctly dimensioned arrays. He reported fewer problems occurred using System version 6.0.2. This information may not be accurate, and Microsoft has not confirmed this information.

Additional query words: MQuickB 1.00

Keywords: KB35439