Re: A92: Floating-point Support
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Re: A92: Floating-point Support
On Sun, 8 Feb 1998, Aaron A. Hill wrote:
>
> Hello All,
>
> I have looked over the different implimentations of floating-point in
> hardware. I don't see why we can't emulate floating-point numbers using a
> word, a long, or even two longs (for best accuracy).
>
> If anyone would like to help me create the support, please let me know. I
> intend to support addition, subtraction, (all floating-point is technically
> signed) multiplication, division, modulus, and power. Trig may be a
> possibility. If things go okay, perhaps the entire M68K-series
> floating-point instruction set could be implimented.
>
> Please let me know of any interest...
>
I suggest you let David find these functions in ROM since they should
be there somewhere...
There is a cool thing you could do - emulate the 68881 Math
Coprocessor. All opcodes can be implemented through the LineF & LineA
exceptions.
//Jonas Minnberg
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