Re: [cc65] Apple2 Libraries - Current status of file io ?

From: Oliver Schmidt <ol.sc1web.de>
Date: 2004-07-28 16:04:32
Hi,

> > I am looking for a status of what's been done and if we're even
> > compatible.  Oliver might be working on ProDOS 16 implementation where
> > I'm working in ProDOS 8.
>
> Does this mean there are several different file I/O libraries needed for
the
> Apple? If so, would it be possible to find a common denominator for all of
> them?

As far as I know there are three different environments for disc access:

- Apple DOS 3.3 has an originally internal - afterwards weakly documented by
a third party - interface usable by 6502 assembler programs. Anyway looking
back from 2004 this interface can be considered stable ;-)

- ProDOS 8 has an official 6502/65C02 assembler program interface which is
totaly different from from DOS 3.3 in all aspects. From a certain version on
ProDOS 8 uses 65C02 statements internally.

- I don't know details about ProDOS 16, but I'd assume that it has a 65816
assembler interface at least to some degree logically compatible with the
one of ProDOS 8.

Oliver

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Received on Wed Jul 28 16:55:41 2004

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