Re: Integer Basic

[Alan Cruikshank <cshank@freenet.edmonton.ab.ca>]

On Tue, 22 Jan 2002, David Empson wrote:

> Paul Schlyter <pausch@saaf.se> wrote:
> 
> Let's be precise here: it is BASIC.SYSTEM which is getting unhooked, not
> ProDOS itsef.  The ProDOS kernel and device drivers use several zero
> page locations, but they are mostly preserved over a call to the kernel.
> 
> In order to be able to use Integer BASIC easily under ProDOS, someone
> would have to write an INTBASIC.SYSTEM which included the functionality
> of BASIC.SYSTEM and Integer BASIC itself.  It should be possible to
> arrange this to behave like DOS 3.3, i.e. you could use FP and INT
> commands to switch languages.  The additional overhead would be about 5
> KB for Integer BASIC, plus some additional code to interface with the
> interpreter.
> 
> ProDOS does have an Integer BASIC file type, and it is used when you
> convert an Integer BASIC program from DOS 3.3 to ProDOS using CONVERT
> (and presumably Apple II Utilities).
> 
> From Apple's file type notes (FTN.About):
> 
> $FA       INT  Integer BASIC program
> $FB       IVR  Integer BASIC variables
> 
> (The next two file types are BAS and VAR, the Applesoft equivalents.)
> 
> -- 
> David Empson
> dempson@actrix.gen.nz

I am intrigued by this. Does anyone have documented sourcecode for Integer
Basic?

--------------------------------------
Alan Cruikshank