Re: Language Card + Apple IIe

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

On Nov 9, 12:18 am, "Marc S. Ressl" <mre...@gmail.com> wrote:

> Hi Matt,
>
> thanks for the response. My question is actually as follows: If I,
> say, put the language card in slot 1 of an Apple IIe, and enable it by
> accessing $C09x (x being that magic number I can't remember right
> now), does the /INH go immediately high and thus make the computer
> stop working (as not only $D000-$FFFF is disabled, but also $0000-
> $BFFF)?, or does the language card do the $D000-$FFFF decoding, and
> assert /INH only when that range is accessed?

Only during an access to that range. As a previous poster mentioned,
the Apple language card also replaces the autostart ROM, using
precisely this technique to only inhibit part of the ROM. This would
be a 'bad thing' on a IIe, so if you were actually going to try this
you'd want to use a clone language card that lacks this feature.

> I know this is a completely useless detail that most of us don't care,
> but it became my hobbie some hours ago :-). I also have a reason for
> making that question.

Care to share what the reason is ? :-)