On Fri, 24 Dec 2010, Jim Brain wrote:
  Is there a link handy to a minimal schematic.
Alexandre's question piqued my
 curiosity, so I went looking, thinking there would be a ez80 Acclaim + SRAM +
 SD, using the RS232 for a terminal.  I can't find anything that minimal. 
The ez80 project appears to have been "closed source".
  If true (I'm happy to be wrong), I agree a small
board with the minimal
 components might be useful to a wide range of people.  But, it would require
 someone who can write a BDOS for it. 
At the risk of appearing negative, I do not think the world needs another
single-board CP/M computer at this moment in time.
In any event, I think it's the BIOS that will be required.  There are
plenty of free options for CCP, BDOS and utility suites.
Steve
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