[Coco] 6309 vs 6809

[Bill Pierce]

Mike, there would be very little if no change unless the code was written specifically for the 6309. The extra intructions are it's speed and if you run a program written for 6809, it runs like a 6809. The only difference would be to run it double speed, but then most games would run too fast. The Coco 3 will run in double speed with a 6809 as well.
Now given the same program modified to run with the 6309 instructions set, you'll see big differences. Nitros9 runs much faster in 6309 native, but it was written for it. 

Bill Pierce
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-----Original Message-----
From: mike delyea <mdelyea at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Fri, Dec 27, 2013 10:16 pm
Subject: [Coco] 6309 vs 6809


Does anyone know of a side by side comparison of the 6309 vs 6809?  I keep
hearing how much faster the 6309 is but I'd like to see a real-world
comparison.  I understand that most of the speed improvements come from
6309 native mode as opposed to 6809 compatible model, but isn't most coco
software unaware of the 6309?  Numbers and bar charts just don't cut it -
I'd like to see if there is any noticeable difference between the chips
doing normal activities.  Play a couple RSDOS games, boot NitrosO-9, run
some OS-9 programs etc.

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