On Sun, Dec 21, 2008 at 1:42 AM, dwight elvey <dkelvey at hotmail.com> wrote:
Hi
Looks like RS422 interface.
> From: ray at
arachelian.com
>
>
http://flickr.com/photos/spaceageboy/3117272956/sizes/o/
>
> Would this be the interface between the Lisa and the Mac as related here:
>
>
<http://folklore.org/StoryView.py?project=Macintosh&story=Shut_Up.txt&sortOrder=Sort%20by%20Date&detail=medium&search=shut%20up>
I don't know what the bus in the Lisa looks like, but the interface
end, the bit that Dwight identifies as an "RS422 interface" will hook
right up to a Mac (but I'd have to check to see if their DE-9 pinout
matches the DE-9 serial pinout of the 128K/512K Mac board). The
"Lisa-Mac Interface Card" legend at the top certainly suggests that
it's a schematic for the card from the story. The circuit appears to
be what one would need to add a Mac-compatible serial port to _some_
machine.
-ethan