yes,
  The replica, is as close as I could come to duplicating an original
Rev 0 Apple II motherboard.  Electrically, it is identical.  In fact
all the components I use, are interchangeable with an original Apple
built system.

Regards,
Mike Willegal

On Mar 1, 10:28=A0pm, apple2fr...{at}gmail.com wrote:
> On Mar 2, 9:26=A0am, mwillegal  wrote:
>
>
>
> > On Mar 1, 8:57=A0pm, adric22  wrote:
>
> > > I wouldn't bother to update the design much, if any. =A0The only good
> > > reason I can think of for building such a thing would either be for
> > > nostalgia or for classroom education. =A0When I say education, I mean
> > > for teaching the basics of how the internals of a computer work to
> > > engineering students since the 8-bit systems like the C64 or Apple II
> > > are so much easier to understand than a modern PC. =A0Now, the Apple =
II
> > > was never my area of expertise (I'm a Commodore fanboy) but if I'm no=
t
> > > mistaken the Apple II was designed from all off-the-shelf parts,
> > > right? =A0 So it should be possible to still build one today with off
> > > the shelf parts. =A0I'm surprised nobody has come up with a new board
> > > design.
>
> > The Apple II reproduction has been done, though some obsolete parts
> > are hard to come by. =A0You can buy a kit from me.
>
> >http://www.willegal.net/appleii/appleii-recreation.htm
>
> > Regards,
> > Mike Willegal
>
> Mike -- very cool. =A0I take it your intent was to create an exact
> replicate of the Apple II and not enhance it in any way?
>
> Regarding an enhanced IIGS -- let's call it a IIEGS to save typing --
> I have no illusions that such a thing would have any appeal except
> perhaps to a few dozen hardcore Apple enthusiasts and hardware
> experimenters. =A0I know there are a few people like this out there as I
> have visited their web sites and seen their postings here.
>
> I suspect that if any significant enhancements were made (which I
> would like to do), that the software effort would be at least as great
> as the hardware effort as well. =A0The GS rom code and GS/OS would need
> to be reverse engineered (thankfully modern reverse engineering tools
> like IDA Pro have reduced the effort required here significantly) and
> then updated to support new display modes and whatever other
> enhancements were added to the system. =A0I happen to have a copy of the
> source code for System 7.1 which may help a bit in this effort as
> well. =A0In fact, maybe System 7.1 could be backported to the IIEGS --
> and this project could be started on existing IIGS systems and/or
> emulators.
>
> Regarding adric22's comments about there not being much point to such
> a project other than for nostalgia and/or education -- perhaps you are
> right, especially if no effort was made to update the design.
> However, there would be no educational point to re-implementing the
> design with discrete logic since for all practical purposes, they are
> no longer used in modern designs. =A0Someone else has already
> implemented the entire Apple II on an FPGA (see link above) as well --
> in an educational context. =A0I think most of the point of a IIEGS
> project would be in the pleasure that came from creating it more-or-
> less from scratch and then using it as a platform on which one could
> run old software titles along with more modern software such as mpeg
> audio players, older graphical web browsers, etc.
>
> --
> Apple2Freak
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