Re: Prodos driver for > 2 partition on Apple 2e

["mdj" <mdj.mdj@gmail.com>]

On Apr 6, 11:35 am, demp...@actrix.gen.nz (David Empson) wrote:

> Yet another technique is to install a RAM-based block driver in main
> memory, but this is seriously limited because there is no area of memory
> which is reserved for this purpose in general use with ProDOS
> applications. It may be possible in seriously limited circumstances,
> such as if you only use it with BASIC.SYSTEM.

Well, officially speaking, you can disconnect /RAM, which not only
reclaims that space used by the /RAM driver, but also declares the
Auxiliary Language card as reserved by the system. $D100-$DFFF in
Auxiliary Language Card Bank 2 is supposedly reserved for just such a
driver - probably the RAMDisk drivers for RAMWorks style cards used
this space.

In theory, after /RAM is disconnected you can use Aux Language card
space. Applications that require that space to operate *should* refuse
to start, or operate in reduced memory mode.

Of course, the difference between theory and practice is greater in
practice than in theory, and a list of (at least popular) 128k
applications that either disrespect the boundary and/or refuse to
operate has never been prepared.

Anyone out there want to help create such a list?

Matt