Re: looking for QuickBASIC decompiler

Scott Nicol <>
19 Dec 1995 14:17:40 -0500

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From: Scott Nicol <>
Newsgroups: comp.compilers
Date: 19 Dec 1995 14:17:40 -0500
Organization: Compilers Central
References: 95-12-096
Keywords: Basic

>[Despite many requests, I've never seen any reports of an x86
> decompiler that did anything useful. -John]

You might not need an x86 decompiler to decompile QuickBASIC. A "trick"
often used to compile "interpreted" languages is to create an executable
that consists of:

- the runtime portion of the interpreter
- an internal representation of the source code
- a loader that reads in the internal represenation and
fires up the runtime

My memory is a bit foggy here, but I believe that the original MS Basic
compiler did this, so there is a decent chance that QuickBASIC does this,

The internal representation may be less difficult to decompile, since
the representation could be more specific to the source language. Of
course, if you can't find documentation on the internal representation,
that will add to the difficulty.

Scott Nicol email:
Information Advantage, Inc. work: (612) 820-3846
Edina, MN home: (612) 488-5406

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