Date   : Fri, 27 Mar 1992 21:41:49 GMT
From   : mtxinu!sybase!gaia!gng@ucbvax.Berkeley.EDU (George George)
Subject: Re: Z80 chrystal upgrade ???

Indeed it is :-)

Your most important considerations are memory access times and D-RAM
RAS/CAS timing. If your RAM board uses a delay line, you will have to
replace it. I upped my KAYPRO II to 4 MHZ this way. I didn't even have
to upgrade the CPU to a Z-80A!

...gng