[Coco] Mission Accomplished!

Boisy G. Pitre boisy at tee-boy.com
Thu Mar 1 16:08:03 EST 2012

On Mar 1, 2012, at 2:48 PM, Steve Bjork wrote:

> As someone that programed "a few games" on both CPUs, the main advantage of the 6809 over the 6502 is handling large data-types.  The other problem with 6502 is the limited support for Object-oriented programming.  6809 and 68000 series CPUs are geared for Object-oriented code, even in Assembly.
> The 6502 does lend itself to very tight and fast code.  (Important to fast games.) So, most (re-coded) games will not see much (if any) improvement because the CPU was changed to a 6809.

Steve, I would think that there would exist inherent advantages in having a processor with more registers and a richer instruction set.  Granted, the Atari graphics and sound hardware make for the CPU having to do very little, but with fewer responsibilities, I would imagine that the 6809 could edge out the 6502.  As I stated in the other post, having a 6309 would definitely be an advantage over the 6809, as it is in the CoCo itself.

Anyway, it's now possible to find out.

> Steve
> On 3/1/2012 11:52 AM, Mike Pepe wrote:
>> That's awesome Boisy. I wonder what kind of awesome games you could make with that Atari video and audio hardware combined with the power of the 6809... hmm....
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