Re: [hatari-devel] ImPerfect Falcon 512b demo?

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 7/14/19 3:32 PM, Miro Kropáček wrote:
> On Sun, 14 Jul 2019 at 12:40, Eero Tamminen <oak@xxxxxxxxxxxxxx> wrote:
> > (Which doesn't make much sense to me, why one would slow down his
> > demo by relying on instruction emulation, instead of building
> > the demo with real 060 support?)
> How would you build e.g. a sinus table without it? To me it seems much
> crazier to use fixed point math than relying on (precisely) emulated FPU
> instructions.

For 512b demo startup, that indeed does sound better alternative,
although it limits its run-time environment quite a bit, if it
runs only with CT TOS.

In larger demo one might include a pre-calculated lookup table to
make it more compatible.  Or if that lookup is too large, use a
smaller pre-calculated one and calculated larger one at run-time
e.g. with linear interpolation?


	- Eero