Re: [hatari-devel] Hatari FPU emulation.

[Douglas Little <doug694@xxxxxxxxxxxxxx>]

Hi Miro,

That's a good point - I didn't even think to check the Hatari config dialog for speed/accuracy flags :) However having done that, I find it is configured for slow/accurate mode already.

Ok I'll brew up a simple test then. I suppose that I should also run the test on a real F30 before doing anything else, in case it saves some valuable time. ;-P

D

 

On 28 July 2014 16:57, Miro Kropáček <miro.kropacek@xxxxxxxxx> wrote:

On Mon, Jul 28, 2014 at 5:52 PM, Douglas Little <doug694@xxxxxxxxxxxxxx> wrote:

now wondering if Hatari emulates 68881/2 rounding control for FPU operations

This used to be a problem with Aranym as well (which has/had one of the FPU emu options coming from UAE). Then they replaced it with a super slow but accurate IEEE emulation core and it's fine. But the faster / less accurate modes are still present, though. If you give me an atari executable to demonstrate the problem, I can make some tests on all FPU Aranym cores, if you like.

--
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http://mikro.atari.org