Date   : Fri, 23 Nov 2012 18:43:33 -0600
From   : jules.richardson99@... (Jules Richardson)
Subject: Upgrading a 32016 co-processor to 10MHz

On 11/23/2012 03:56 PM, 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?

I don't have my notes handy, but I think there's a jumper you'll need to 
fit in order to insert a wait state when doing RAM access; a 150ns cycle 
time equates to 6.67MHz, so is fast enough to do one access per clock cycle 
at 6MHz, but not at 8 or 10.

At least one of my 4MB boards uses 150ns DRAM with a 10MHz CPU, and I 
*think* the 1MB 'small' boards had all the same jumpers.

cheers

Jules