[Coco] [COCO] Stacking the 6309?

[Salvador Garcia]

There is software that takes advantage of the 6309's enhanced features that are not available in the 6809. Additionally, some (all?) of the 6309's instructions are optimized, so they run a tad bit faster than in the 6809. If for no other reason, the 6309 can provide a slight speed boost. I've read here that a 10% increase in speed is realistic. Salvador


      From: Bruce W. Calkins <brucewcalkins at charter.net>
 To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
 Sent: Thursday, March 30, 2017 8:52 PM
 Subject: Re: [Coco] [COCO] Stacking the 6309?
   
Since the 6309 normally works like a 6809, why bother?

Bruce W.



On 03/30/2017 05:59 PM, S Klammer wrote:
> A while back, we had some discussion about using a ZIF type socket to allow
> swapping back to a straight 6809.
>
> Seems Chris Burke (of Burke & Burke) provided some instruction on just
> stacking the 6309 on top of the existing 6809, along with a switch...
>
> http://www.6809.org.uk/dragon/6309fit.shtml
>
> Shain
>


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