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Re: split a basic program into two different areas of RAM?
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Michael J. Mahon
May 6, 2012, 7:35:07 PM5/6/12
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asdf <craigs...@gmail.com> wrote:
> I assume you could poke 103, 104 with new values, and jmp back to the
> basic
> interpreter to split a basic program?
>
> IE, program first half at $800 to $1FFF. second half at $4000 to
> $6000.
>
> any time you need to get to the second half of the program, call a ML
> program that modifies 103 and 104, then call the interpreter. you
> would
> need to restore them when program flows back to the first half.
>
> Are there instructions on how to do this anywhere?
>
> Rich
This was a very common utility in the day.
Check Nibble indexes or Call A.P.P.L.E. You'll find several
articles/utilities to split Applesoft programs.
-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon
> I assume you could poke 103, 104 with new values, and jmp back to the
> basic
> interpreter to split a basic program?
>
> IE, program first half at $800 to $1FFF. second half at $4000 to
> $6000.
>
> any time you need to get to the second half of the program, call a ML
> program that modifies 103 and 104, then call the interpreter. you
> would
> need to restore them when program flows back to the first half.
>
> Are there instructions on how to do this anywhere?
>
> Rich
This was a very common utility in the day.
Check Nibble indexes or Call A.P.P.L.E. You'll find several
articles/utilities to split Applesoft programs.
-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon
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