[Coco] ceramics ...

[Kevin Diggs]

Hi,

	Now I'm confused. Can you clarify this 12 MHz 3 MHz buss thing?

	I thought that square on my PIII was the die! Amazing it can take the 
pressure that the heat sink puts on it! I have this Thermaltake orb heat 
sink. Under Linux I can build Mozilla with the fan unplugged and it does 
not burn up the chip. The heat sink does get hot though.
It is not to hot to touch. It is uncomfortable though.

					kevin

jdaggett at gate.net wrote:
> Mark
> 
> Heat, Heat, Heat
> 
> Also Mark the design that we used the 6809 in was to transmit digital data stream. 
> We needed to boost the transmit speed and found that raiseing the clock speed on 
> a 68B09 to 12 MHz (3 MHZ buss) from 8MHz (2 MHZ buss) allowed us to do that. 
> Otherwise we needed to redesign the whole test equiptment. We used about 1000 
> of them worldwide. The cycle time and cost to redesign them with a new processor 
> versus taking the risk of increase buss speed was a calcualted risk but a reasonable 
> risk. A few phone calls to the right people and the right questions were answered 
> and we undertook the course of action that we did. It worked. Will it work on 
> everything? No. But we did not just go out and drop in a new crystal and prayed.   
> 
> Now the heat sink litterally sits on the backside of the die. 
>