[Coco] 6809 vs 6309 question

[Bill Pierce]

Thanks William, That's exactl what I neededtoknow :-)

Bill Pierce
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-----Original Message-----
From: William Astle <lost at l-w.ca>
To: coco <coco at maltedmedia.com>
Sent: Thu, Aug 22, 2013 5:42 pm
Subject: Re: [Coco] 6809 vs 6309 question


On 2013-08-22 15:19, Bill Pierce wrote:
>
> I know this has been discussed many times in the past but I needed to know 
this kind of quick and didn't feel like searching the specs for the info (read 
lazy, rainy day :-)P
> Is there any advatage of using the 6309 in "emulated" mode vs the 6809?
> I know it's much faster than the 6809 and has added instructions in "native" 
mode. That I'm familiar with. I have written asm programs for the 6309 in native 
mode.
> Also, can the extended instructions be used in emulated mode?

Yes, the extended instructions are available in emulated mode.

As far as advantages for emulated mode, I can't think of any in 
particular if you are writing code specifically for the 6309. The 
primary advantage of emulated mode is cycle compatibility for 6809 
instructions.


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