Re: Slot#0 on ][+

[dempson@actrix.gen.nz (David Empson)]

John L <jlogo@zipworld.com.au> wrote:

> On Wed, 4 Apr 2001 01:50:40 +1200, dempson@actrix.gen.nz (David
> Empson) wrote:
> 
> >You won't be able to use a card like the Apple II Memory Expansion card,
> >or an equivalent like the RamFactor, because they don't work in slot 0,
> >and they don't emulate a language card.
> 
> I have an AST Sprintdisk 1MB RAM card and an Apple 1MB Memory
> Expansion Card.  I tried both of them in Slot#0 and they appear to
> work but don't provide me with the necessary 16K I need for a base 64K
> RAM.  As you stated above, these cards probably don't "emulate" a
> language card.  A pity.

In what way do they appear to work?  Slot 0 doesn't have any firmware
address space (and also won't support the $C800-$CFFF IOSEL area).
Since cards like the Apple II Memory Expansion card require their
firmware to do anything useful, I wouldn't expect anything to be able to
use the card if it is in slot 0.

There might be some programs which break the rules and access the
hardware directly for these cards, but they wouldn't be able to find the
card in the first place, because its firmware is required to identify
the card (unless the program in question has an option for hard coding
the slot).