Date   : Fri, 23 Nov 2012 22:55:43 +0000
From   : jgh@... (J.G.Harston)
Subject: Upgrading a 32016 co-processor to 10MHz

Rob Coleman wrote:
> I?ve got hold of a 10MHz chipset for my 32016 second-processor. Does
> anyone know if it is safe to run it at 10MHz without replacing the 
> ram
> with a faster variety?

The New Advanced User Guide says that the 32016 was originally designed 
to use 8MHz chips with a 16MHz crystal, but shortages lead to them using 
6MHz chips and a 12MHz crystal - which created the problem that the 
32016 couldn't run fast enough to keep up with the ADFS low level disk 
transfers, and a special version of ADFS had to be written!

But anyway, the final paragraph says that you can "replace the 6MHz 
chipset with 8MHz or 10MHz chips and replce the 12MHz crystal witha 
16MHz or 20MHz one", so that to me is saying a 10MHz chipset and 20MHz 
crystal can jusy be dropped in - with the additional advantage that 
standard ADFS will work with it, and probably also IDE ADFS.

JGH