Re: What are the chances of a Replica II project?

[Mark McDougall <markm@vl.com.au>]

Paul Schlyter wrote:

> Michael J. Mahon <mjmahon@aol.com> wrote:
> > The Apple II peripheral bus was designed as a leap in expandability
> > and ease of use.  Truly the first real example of "plug and play".
>  
> Not quite .... you could not plug in or unplug the cards while the
> Apple II was powered-up - as you can do with PCMCIA or USB.

"Plug and Play" refers to the ability for a bus driver to 
'auto-discover' and configure (or at least prompt for configuration) new 
devices on the bus. Thus the user does not need to manually 
specify/configure devices on the bus before they can be used.

What you refer to Paul is "hot plugging" - the ability to add or remove 
devices from the bus whilst the system is powered.

Two different things, although the latter (generally) necessitates the 
former.

FWIW, USB technically isn't a "bus" either.

Regards,

--
Mark McDougall, Engineer
Virtual Logic Pty Ltd, <http://www.vl.com.au>
21-25 King St, Rockdale, 2216
Ph: +612-9599-3255 Fax: +612-9599-3266