Date   : Sun, 19 Aug 2007 22:55:09 +0100
From   : julesrichardsonuk@... (Jules Richardson)
Subject: 32016 copro speeds

David Hunt wrote:
>> Someone was asking about 32016 speeds ages ago on here - 
>> afraid I can't remember who, when, or the context now :-)
>>
>> Anyway, in case it's of use, so far I'm getting the 
>> impression that all of the cheese wedge ones were 6MHz, ACWs 
>> with the 1MB boards were 8MHz, and ACWs with the 4MB boards 
>> ran at 10MHz.
>>
>> (it's be interesting to hear from any others with 32016 parts 
>> to either back that up or contradict it!)
>>
>> cheers
>>
>> Jules
>>
> 
> I do remember something about that too. 

I'll check my other 4MB board tomorrow and see what that has...

> 10MHz parts need heatsinks, otherwise they'll die. I don't think it's
> possible to "overclock" the 6MHz variety to 10MHz though.

I don't think so either - and I believe the support chips were released in 
various speed versions too, so they'd have to be swapped out along with the 
CPU to bump the speed up.

> I recently had a
> clearout and gave away a 32016, as I realized it was identical (except the
> name) to the Cambridge Co-Processor which I've already got.

Indeed. I've got some boards that were "revision 2" and some that were 
"revision H" - the only difference seems to be in the type of IC decoupling 
caps used. There are both types of case label, but there doesn't seem to be 
any correlation between board and case type - I'm not sure if they were like 
that within Acorn though, or whether it's just that case lids and boards have 
been mixed up over the years. (There doesn't seem to be any pattern to the 
type of PSU used, either)

> Did anyone get any other processor emulated on Sprow's ARM7TDMI board ? I
> would like to thin down my Beeb 2nd Processor collection and that looks like
> a good bet.

Hmm, a 32016 for one of the emulators would be nice.

cheers

Jules