From: "Jeff Davis" <jdavis at soupwizard.com>
  On Thu, February 28, 2008 10:17 am, Josef Chessor
wrote:
  I'd dreamed of having a "Generic Front
Panel", 16-bit address/8-bit
 data, hooked up via RS-232 for simulator uses.  I admit that your idea
 controlling a PC in this way would be really, really cool.  Of limited
 utility outside of learning, though. 
 /me too!  I was talking a few days ago about how I couldn't afford an
 Altair
 or IMSAI, so I'd like to make a box with a pc inside running an emulator,
 and a front panel with altair-like switches connected to serial or
 parallel
 port via an atmel avr microcontroller, which a cp/m emulator reads as the
 front
 panel. 
OK, not to toot my own horn or anything, but Henk and I already did one of
these. (The only thing we haven't done is to physically put the front panel
and the PC in the same box.)
You can go to 
http://www.pdp-11.nl/ and click "my projects" in the left
panel to get an overview of some of the uses of the thing.  (You have
to click the little yellow folder to be allowed to drill down into the
individual projects.)
Henk, is there a better URL that specifically describes the Blinkenlight
project?
(I did some grunt work, but the idea was his.)
    Vince