Re: 80 column card in IIe HELP

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

In article <317766F3.69A5@shu.ac.uk>,
Julian Beech  <J.C.Beech@shu.ac.uk> wrote:
> I have just got an Apple 80 column card in my IIe with 64k ram, no
> rom on it, how does it work ?

I assume this is the card which plugs into the auxiliary slot,
sometimes known as the "extended 80-column card".  It doesn't need a
ROM on the card, because the firmware support is built into the IIe -
all that is needed is the extra RAM to provide the screen memory.

There are actually two versions of the card: one has 1K of RAM, which
is just enough to provide 80-column text.  The other one provides 64K
of RAM, which allows the use of double hi-res graphics, and general
use of the additional RAM by programs which support it.

The 80-column firmware is in slot 3, so you use PR#3 to turn on
80-column mode.  To turn it off again, press ESC then Control-Q.

If you are using ProDOS, then the additional memory is automatically
set up as a 60K RAM disk called /RAM, which appears in S3,D2.  Many
programs disable the RAM disk so they can use the extra memory directly.
-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand