1492Re: [SpectrumLabUsers] Re: SL on Raspberry Pi?
- Apr 30, 2013Am 30.04.2013 23:38, schrieb vbifyz:
--- In SpectrumLabUsers@yahoogroups.com, wolf_dl4yhf <dl4yhf@...> wrote:
> Utterly impossible, because SL is written in Borland C++ Builder (using
> Borlands VCL) - no chance to produce ARM code with it.
> The ARM target would have to emulate x86 instructions.
This is why I mentioned DosBox. It would serve as the x86 emulation layer. Another x86 emulation alternative I know about is QEMU.
I realize the performance will be poor, but it may be ok for some applications.
Ok yes, a CPU emulator would be ok for less CPU-intense applications, but not for mainly number-crunching software like SL.
Also the target CPU definitely needs a floating point unit (in hardware, not emulated) which adds to the complexity.
Re-writing the DSP stuff from floating point to integer just to run it on a small ARM would be overkill. There are some nice optimized fixed-point (integer) FFT algorithms which look pretty neat, but all the rest (GPS-timestamp-based processing, filters implemented in the time domain, etc) calls for a CPU with a bit more 'kick'. For my applications, the BeagleBone would be the first choice for an embedded system running some of the DSP functions, for example as a 'remote frontend'. But I wouldn't even call that a 'future plan' right now, due to the ever present lack of time.
All the best,
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