Roman Zippel wrote: > Hi, > > On Tuesday 4. March 2008, Wouter Verhelst wrote: > >> A hybrid port would just emit two opcodes in such a case, of course. >> This will indeed degrade performance slightly. >> > > The incompabilities are all over the place, we would be basically restricted > to a very basic instruction set and due to the floating point differences it > wouldn't even be compatible with the current ABI. I'm not overly optimistic > that a few optimized libraries would save us, e.g. scripting languages are > already slow enough right now. > With respect to Floating Point there are differences within the Coldfire V4 family. The M547x/M548x have the FPU you have been discussing. The M5445x doesn't have any FPU hardware and requires everything to be compiled with softfloat.
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