[Coco] Optimizing 6809 Assembly Code: Part 2 – Speedup Storing Data – Unrolling Loops

Glen Hewlett glen.hewlett at sympatico.ca
Sun Sep 17 11:03:07 EDT 2017


Hi Mark,

I love to hear stuff like this!  That’s the main reason I posted the blog.  Of course it’s also a great reference for me to also refer to… :)

Yeah, I hear you about keeping things the same at first, then optimized later.  Very important.

Cheers,
Glen

> On Sep 17, 2017, at 8:15 AM, Mark McDougall <msmcdoug at iinet.net.au> wrote:
> 
> Hi Glen,
> 
> Great series of articles!
> 
> Wasn't aware of the tfr/leau optimsiation - although I did note that tfr was _slow_! Just went through Knight Lore (some news on that subject very soon) and replaced 14 occurrences - thanks!
> 
> It also reminded me to look for bsr,rts and I found a few of those as well but in my defence, I was focused at the time on keeping the code "the same" as the original! ;)
> 
> Regards,
> 
> -- 
> Mark McDougall
> <http://retroports.blogspot.com.au>
> 
> -- 
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