MW - -
Check both of these sites ... and look for the schematics:
http://el.www.media.mit.edu/projects/handy-board/
http://www.hooked.net/~jfong/computers.html
I use both the HandyBoard and the FingerBoard ... and highly
recommend both units.
Enjoy,
 - - - Nick - - -

WF AUTOMACAO wrote:
<snip>
>         Does someone have a circuit that shows a 68hc11 working in
> "expanded mode", but using a 74138 for select the external memories and
> I/O?
>         Thanks!
>         MW.