Date   : Sat, 24 Nov 2012 09:40:06 -0000
From   : rgcolem.myorg@... (Rob Coleman)
Subject: Upgrading a 32016 co-processor to 10MHz

On 24/11/2012 12:43 AM, Jules Richardson wrote:
> 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.

Could this be the LK7? Looking at the schematic from John K.'s site, it 
chooses which output of a LS393 binary counter to use for ram refresh.

However, pictures and schematics for the ACW show this in the 'B' position 
which is the same as in my 6MHz 32016. I may just try it as is to see how 
stable it is at 10MHz - I've found a cheap supplier of suitable 100ns ram 
but don't fancy the idea of removing 32 ram chips!

Thanks to everyone for all the helpful suggestions.

Rob