Re: Announcing: Apple II Plus ROM Board

["William Garber" <willy46pa@garberstreet.com>]

<bieling@terra.es> wrote in message 1169398140.795160.147350@38g2000cwa.googlegroups.com">news:1169398140.795160.147350@38g2000cwa.googlegroups.com...
:
: History Student ha escrito:
:
: > Just as an FYI, the Apple II+ in those photographs belongs to me. The
: > computer was an old test box that was used by the Call APPLE co-op, and it
: > was given to me by a former CA employee. I can't remember what was on the
: > alternate ROM, but I believe that it was something unusual. I have the
: > documentation for it around here somewhere. The little device next to the
: > keyboard was for switching between different keyboard mappings.
:
: I like this ROM-switcher thing.

I like this one too for swapping between
2 F800 ROMs. I assume one Monitor ROM and
a modified ROM.

: But Bill's swaps the whole ROM address
: map at once, I believe.

This is correct. It allows two completely
different ROM mappings. You could even put
Auto-start Monitor ROM in both.

: What for would you need to have different
: keyboard mappings ?

The keyboard of the II+ is mapped in the encoder
on the keyboard itself, and the character map is
defined in the CharGen ROM to the left of the
keyboard connector on the motherboard. To change
the character map you need to convert that socket
to 2716 and have a dual adapter with a 2732 or
two 2716's onboard.

: Did this guy ask you for the photos then ?

I assume you mean did I ask him, and the answer
is no. My dual ROM board design is completely
original.

William Garber
Email Address - willy46pa@garberstreet.com
Alt. Email - willy46pa@comcast.net
Web address - http://www.garberstreet.com