Mailinglist Archive: opensuse-programming (27 mails)

[Dave Plater <dplater@xxxxxxxxxxxxxxxx>]

On 01/12/2010 09:05 PM, Per Jessen wrote:
> Just a follow-up on my earlier question about which assembler to choose.
> I've opted for nasm.  I still don't quite like the simplicity-idea, but
> I think I can work around the most annoying "features" with a set of my
> own macros.  
>
> However, I've just completed some initial testing, and here is why you
> need assembler:
>
> I'm processing a dataset of 262176 bytes.  Not a lot, but still about
> 2million bits.  The computation is 99.9% CPU-bound.
>
> In my first version, I used a div instruction in the code, and the
> computation took 151minutes (wall-time).
> In the second, I removed the div, and probably removed one or two other
> instructions.  New computation took 62minutes. 
>
>
>
> /Per Jessen, Zürich
>
>   
I used to use masm 32 under windows 98, it had a series of macros for
conditional loops and one called invoke which used a c like prototype
for calling api functions and prevented you from having to pop and push
values continually and also had a gui generator. I used it to make
programs to interface with hardware I designed and built, it's the only
thing I realy missed when changing to linux.
It still exists to this day.
Regards
Dave P
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